diff --git a/.github/workflows/frontend_tests.yml b/.github/workflows/frontend_tests.yml
index c9e89b30..d2cd4f58 100644
--- a/.github/workflows/frontend_tests.yml
+++ b/.github/workflows/frontend_tests.yml
@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v3
         with:
-          node-version: '14'
+          node-version: '16'
       - name: Install dependencies
         run: npm install
       - name: Run frontend tests
diff --git a/constants.js b/constants.js
index f8060ef5..1ef2907a 100644
--- a/constants.js
+++ b/constants.js
@@ -52,7 +52,6 @@ const issuesLabelCheck = 'issues-labeled-check';
 const issuesAssignedCheck = 'issues-assigned-check';
 const forcePushCheck = 'force-push-check';
 const pullRequestReviewCheck = 'pr-review-check';
-const codeOwnerCheck = 'code-owner-check';
 const ciFailureCheck = 'ci-failure-check';
 const updateWithDevelopCheck = 'update-with-develop-check';
 const respondToReviewCheck = 'respond-to-review-check';
@@ -79,7 +78,6 @@ const checksWhitelist = {
     [openEvent]: [
       assigneeCheck,
       claCheck,
-      codeOwnerCheck,
       branchCheck,
       jobCheck,
       cronJobCheck,
@@ -102,7 +100,6 @@ const checksWhitelist = {
       jobCheck,
       cronJobCheck,
       modelCheck,
-      codeOwnerCheck,
     ],
     [closeEvent]: [allMergeConflictCheck, updateWithDevelopCheck],
     [editEvent]: [wipCheck],
@@ -169,7 +166,6 @@ module.exports.hotfixLabelCheck = hotfixLabelCheck;
 module.exports.prTemplateCheck = prTemplateCheck;
 module.exports.forcePushCheck = forcePushCheck;
 module.exports.pullRequestReviewCheck = pullRequestReviewCheck;
-module.exports.codeOwnerCheck = codeOwnerCheck;
 module.exports.ciFailureCheck = ciFailureCheck;
 module.exports.updateWithDevelopCheck = updateWithDevelopCheck;
 module.exports.respondToReviewCheck = respondToReviewCheck;
diff --git a/index.js b/index.js
index c4eeddb4..cc83d7c5 100644
--- a/index.js
+++ b/index.js
@@ -32,7 +32,6 @@ const checkCriticalPullRequestModule = require(
 );
 const checkBranchPushModule = require('./lib/checkBranchPush');
 const checkPullRequestReviewModule = require('./lib/checkPullRequestReview');
-const newCodeOwnerModule = require('./lib/checkForNewCodeowner');
 const ciCheckModule = require('./lib/ciChecks');
 const periodicCheckModule = require('./lib/periodicChecks');
 
@@ -84,7 +83,8 @@ const runChecks = async (context, checkEvent) => {
             );
             break;
           case constants.jobCheck:
-            callable.push(checkPullRequestJobModule.checkForNewJob(context));
+            callable.push(
+              checkPullRequestJobModule.checkForModificationsToFiles(context));
             break;
           case constants.cronJobCheck:
             callable.push(checkCronJobModule.checkForNewCronJob(context));
@@ -132,9 +132,6 @@ const runChecks = async (context, checkEvent) => {
               checkPullRequestReviewModule.handlePullRequestReview(context)
             );
             break;
-          case constants.codeOwnerCheck:
-            callable.push(newCodeOwnerModule.checkForNewCodeowner(context));
-            break;
           case constants.ciFailureCheck:
             callable.push(ciCheckModule.handleFailure(context));
             break;
diff --git a/lib/checkForNewCodeowner.js b/lib/checkForNewCodeowner.js
deleted file mode 100644
index 02995af0..00000000
--- a/lib/checkForNewCodeowner.js
+++ /dev/null
@@ -1,163 +0,0 @@
-// Copyright 2020 The Oppia Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview File to handle checks when a new code owner gets added.
- */
-
-const utilsModule = require('./utils');
-const userWhitelist = require('../userWhitelist.json');
-const CODE_OWNER_FILE_NAME = '.github/CODEOWNERS';
-const newAddition = '+';
-const newCommentAddition = '+#';
-const newLine = '\n';
-const usernameDefiner = '@';
-
-/**
- * This function returns true if new added line starts with '+'
- * and not as '+#' which is comment line and false if otherwise.
- *
- * @param {string} change
- */
-const checkNewLineAddition = (change) => {
-  return (
-    change.startsWith(newAddition) && !change.startsWith(newCommentAddition)
-  );
-};
-
-/**
- * This function returns all the new codeowners added to the codeowners file.
- * @param {import('probot').Octokit.PullsListFilesResponseItem} file
- * @returns {string[]}
- */
-const getNewCodeOwners = (file) => {
-  const changesArray = file.patch.split(newLine);
-  const newAdditions = changesArray.filter((change) => {
-    return checkNewLineAddition(change);
-  });
-
-  /**
-   * @type {string[]} addedCodeOwners
-   */
-  let addedCodeOwners = [];
-  newAdditions.forEach((addition) => {
-    const usernames = addition.split(usernameDefiner);
-    // The first item of the array will be the path to the file, and should
-    // be removed to get only the usernames.
-    usernames.shift();
-    addedCodeOwners.push(...usernames);
-  });
-  // Trim and add @ to the front of the username.
-  addedCodeOwners = addedCodeOwners.map(
-    (username) => usernameDefiner + username.trim()
-  );
-
-  // Remove all duplicates and return the array.
-  return Array.from(new Set(addedCodeOwners));
-};
-
-/**
- * This function returns all the files added/modified to the codeowner file.
- * @param {import('probot').Octokit.PullsListFilesResponseItem} file
- * @returns {string[]}
- */
-const getNewCodeOwnerFiles = (file) => {
-  const changesArray = file.patch.split(newLine);
-  const newAdditions = changesArray.filter((change) => {
-    return checkNewLineAddition(change);
-  });
-
-  const addedFiles = newAdditions.map((addition) => {
-    const additionArray = addition.split(usernameDefiner);
-    // The first item of the array will be the path to the file, and should
-    // be returned.
-    const filePath = additionArray.shift().trim();
-    // Remove '+' from the file path.
-    return filePath.substring(1);
-  });
-
-  return addedFiles;
-};
-
-/**
- * This function checks if a new codeowner has been added to the codeowner
- * file and responds as required.
- *
- * @param {import('probot').Context} context
- */
-const checkForNewCodeowner = async (context) => {
-  /**
-   * @type {import('probot').Octokit.PullsGetResponse} pullRequest
-   */
-  const pullRequest = context.payload.pull_request;
-
-  const changedFiles = await utilsModule.getAllChangedFiles(context);
-
-  const changedCodeOwnerFile = changedFiles.find(
-    (file) => file.filename === CODE_OWNER_FILE_NAME
-  );
-
-  if (changedCodeOwnerFile) {
-    const mainCodeOwnerFile = await utilsModule.getMainCodeOwnerfile();
-
-    const newlyAddedCodeOwners = getNewCodeOwners(changedCodeOwnerFile);
-
-    // Remove all exisiting codeowners.
-    const newCodeOwners = newlyAddedCodeOwners.filter(
-      (user) => !mainCodeOwnerFile.includes(user)
-    );
-
-    if (newCodeOwners.length > 0) {
-      let codeOwnerString = '';
-      if (newCodeOwners.length > 1) {
-        codeOwnerString =
-          'the following new code owners ' + newCodeOwners.join(', ');
-      } else {
-        codeOwnerString = 'a new code owner, ' + newCodeOwners[0];
-      }
-
-      const filePaths = getNewCodeOwnerFiles(changedCodeOwnerFile);
-      let codeOwnerFileString = '';
-      if (filePaths.length > 1) {
-        codeOwnerFileString = ' to the following files ' + filePaths.join(', ');
-      } else {
-        codeOwnerFileString = ' to ' + filePaths[0];
-      }
-
-      let commentBody = '';
-      // Ping the code owner of CODEOWNERS file since we just want to flag
-      // that a new code-owner is added and bring it to his attention.
-      commentBody =
-          'Hi @' +
-          userWhitelist.codeOwnerFileReviewer +
-          ', this PR adds ' +
-          codeOwnerString +
-          codeOwnerFileString +
-          '. Please make sure the changes are ' +
-          'verified by the previous codeowner(s) of the file. Thanks!';
-
-      context.github.issues.createComment(
-        context.repo({
-          issue_number: pullRequest.number,
-          body: commentBody,
-        })
-      );
-    }
-  }
-};
-
-module.exports = {
-  checkForNewCodeowner,
-  getNewCodeOwners
-};
diff --git a/lib/checkNewCronJobs.js b/lib/checkNewCronJobs.js
index 3cdfc20d..303719bb 100644
--- a/lib/checkNewCronJobs.js
+++ b/lib/checkNewCronJobs.js
@@ -17,7 +17,7 @@ const {
 } = require('../userWhitelist.json');
 const {
   DATASTORE_LABEL,
-  JOBS_AND_FETURES_TESTING_WIKI_LINK,
+  JOBS_AND_FEATURES_TESTING_WIKI_LINK,
   getAllChangedFiles,
   hasDatastoreLabel,
   pingAndAssignUsers
@@ -79,7 +79,7 @@ const getCommentBody = (changedFiles, prAuthor) => {
   const serverJobsForm = 'server jobs form'.link(
     'https://goo.gl/forms/XIj00RJ2h5L55XzU2');
   const wikiLinkText = 'this guide'.link(
-    JOBS_AND_FETURES_TESTING_WIKI_LINK);
+    JOBS_AND_FEATURES_TESTING_WIKI_LINK);
 
   const serverAdminPing = (
     'Hi @' + serverJobAdmins.join(', @') +
diff --git a/lib/checkPullRequestJob.js b/lib/checkPullRequestJob.js
index 2bf0999d..02aa1fc6 100644
--- a/lib/checkPullRequestJob.js
+++ b/lib/checkPullRequestJob.js
@@ -16,113 +16,59 @@ const {
   serverJobAdmins
 } = require('../userWhitelist.json');
 const {
-  JOBS_AND_FETURES_TESTING_WIKI_LINK,
+  JOBS_AND_FEATURES_TESTING_WIKI_LINK,
   DATASTORE_LABEL,
   getAllChangedFiles,
-  getNameString,
-  getNewItemsFromFileByRegex,
   hasDatastoreLabel,
   pingAndAssignUsers
 } = require('./utils');
-const REGISTRY_FILENAME = 'jobs_registry.py';
 const JOBS_DIR_PREFIX = 'core/jobs/';
-const JOB_REGEX = new RegExp(
-  [
-    '(?<addition>\\+)(?<classDefinition>class\\s)',
-    '(?<name>[a-zA-Z]{2,80})(?<suffix>Job)(?<funDef>\\()'
-  ].join('')
-);
+const PLATFORM_DIR_PREFIX = 'core/platform/';
 
 /**
  * @param {string} filename
  */
-const isInJobsDir = (filename) => {
-  return filename.startsWith(JOBS_DIR_PREFIX);
-};
-
-/**
- * @param {import('probot').Octokit.PullsListFilesResponseItem} file
- */
-const getNewJobsFromFile = (file) => {
-  return getNewItemsFromFileByRegex(JOB_REGEX, file);
-};
-
-/**
- * @param {import('probot').Octokit.PullsListFilesResponseItem} file
- */
-const addsNewJob = (file) => {
-  const newJobs = getNewJobsFromFile(file);
-  return newJobs.length > 0;
-};
-
-/**
- * @param {import('probot').Octokit.PullsListFilesResponseItem[]} newJobFiles
- */
-const getJobNameString = (newJobFiles) => {
-  return getNameString(
-    newJobFiles,
-    {
-      singular: 'job',
-      plural: 'jobs'
-    },
-    JOB_REGEX
+const shouldFileChangesBeVerified = (filename) => {
+  return (
+    (
+      filename.startsWith(JOBS_DIR_PREFIX) || 
+      filename.startsWith(PLATFORM_DIR_PREFIX)
+    ) &&
+    !filename.endsWith('test.py')
   );
 };
 
 /**
- * @param {import('probot').Octokit.PullsListFilesResponseItem[]} newJobFiles
- * @param {import('probot').Octokit.PullsListFilesResponseItem[]} changedFiles
  * @param {string} prAuthor - Author of the Pull Request
  */
-const getCommentBody = (newJobFiles, changedFiles, prAuthor) => {
-  const jobNameString = getJobNameString(newJobFiles);
+const getCommentBody = (prAuthor) => {
   const newLineFeed = '<br>';
   const serverJobsForm = 'server jobs form'.link(
     'https://goo.gl/forms/XIj00RJ2h5L55XzU2');
   const wikiLinkText = 'this guide'.link(
-    JOBS_AND_FETURES_TESTING_WIKI_LINK);
-
-  // This function will never be called when there are no job files.
-  if (newJobFiles.length === 1) {
-    const serverAdminPing = (
-      'Hi @' + serverJobAdmins.join(', @') +
-      ', PTAL at this PR, ' + 'it adds a new job.' + jobNameString
-    );
+    JOBS_AND_FEATURES_TESTING_WIKI_LINK);
 
-    const prAuthorPing = (
-      'Also @' + prAuthor + ', ' +
-      'please make sure to fill in the ' + serverJobsForm + ' ' +
-      'for the new job to be tested on the backup server. ' +
-      'This PR can be merged only after the test run is successful. ' +
-      'Please refer to ' + wikiLinkText + ' for details.'
-    );
-    return (
-      serverAdminPing + newLineFeed + prAuthorPing + newLineFeed + 'Thanks!'
-    );
-  } else {
-    const serverAdminPing = (
-      'Hi @' + serverJobAdmins.join(', @') + ', PTAL at this PR, ' +
-      'it adds new jobs.' + jobNameString
-    );
-
-    const prAuthorPing = (
-      'Also @' + prAuthor + ', ' +
-      'please make sure to fill in the ' + serverJobsForm + ' ' +
-      'for the new jobs to be tested on the backup server. ' +
-      'This PR can be merged only after the test run is successful. ' +
-      'Please refer to ' + wikiLinkText + ' for details.'
-    );
-    return (
-      serverAdminPing + newLineFeed + prAuthorPing + newLineFeed + 'Thanks!'
-    );
-  }
+  const serverAdminPing = (
+    'Hi @' + serverJobAdmins.join(', @') +
+    ', PTAL at this PR, it modifies files in jobs or platform folders.'
+  );
+  const prAuthorPing = (
+    'Also @' + prAuthor + ', ' +
+    'please make sure to fill in the ' + serverJobsForm + ' ' +
+    'for the new job or feature to be tested on the backup server. ' +
+    'This PR can be merged only after the test run is successful. ' +
+    'Please refer to ' + wikiLinkText + ' for details.'
+  );
+  return (
+    serverAdminPing + newLineFeed + prAuthorPing + newLineFeed + 'Thanks!'
+  );
 };
 
 
 /**
  * @param {import('probot').Context} context
  */
-const checkForNewJob = async (context) => {
+const checkForModificationsToFiles = async (context) => {
   /**
    * @type {import('probot').Octokit.PullsGetResponse} pullRequest
    */
@@ -131,16 +77,12 @@ const checkForNewJob = async (context) => {
     const changedFiles = await getAllChangedFiles(context);
 
     // Get new jobs that were created in the PR.
-    const newJobFiles = changedFiles.filter((file) => {
-      return isInJobsDir(file.filename) && addsNewJob(file);
+    const modifiedFilesToBeTested = changedFiles.filter((file) => {
+      return shouldFileChangesBeVerified(file.filename);
     });
 
-    if (newJobFiles.length > 0) {
-      const commentBody = getCommentBody(
-        newJobFiles,
-        changedFiles,
-        pullRequest.user.login
-      );
+    if (modifiedFilesToBeTested.length > 0) {
+      const commentBody = getCommentBody(pullRequest.user.login);
 
       await pingAndAssignUsers(
         context,
@@ -159,8 +101,7 @@ const checkForNewJob = async (context) => {
 };
 
 module.exports = {
-  checkForNewJob,
-  getNewJobsFromFile,
+  checkForModificationsToFiles,
   hasDatastoreLabel,
   DATASTORE_LABEL
 };
diff --git a/lib/utils.js b/lib/utils.js
index 302dfa32..501da296 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -22,7 +22,7 @@ const DATASTORE_LABEL = 'PR: Affects datastore layer';
 const HOTFIX_LABEL = 'PR: Needs to be hotfixed';
 const CODE_OWNERS_FILE_URL =
   'https://raw.githubusercontent.com/oppia/oppia/develop/.github/CODEOWNERS';
-const JOBS_AND_FETURES_TESTING_WIKI_LINK = (
+const JOBS_AND_FEATURES_TESTING_WIKI_LINK = (
   'https://github.com/oppia/oppia/wiki/' +
   'Testing-jobs-and-other-features-on-production'
 );
@@ -448,7 +448,7 @@ module.exports = {
   DATASTORE_LABEL,
   HOTFIX_LABEL,
   OLD_BUILD_LABEL,
-  JOBS_AND_FETURES_TESTING_WIKI_LINK,
+  JOBS_AND_FEATURES_TESTING_WIKI_LINK,
   getAllChangedFiles,
   getNameString,
   getNewItemsFromFileByRegex,
diff --git a/spec/apiForSheetsSpec.js b/spec/apiForSheetsSpec.js
index 649bdb8b..4d25fe71 100644
--- a/spec/apiForSheetsSpec.js
+++ b/spec/apiForSheetsSpec.js
@@ -30,7 +30,6 @@ const checkCriticalPullRequestModule =
   require('../lib/checkCriticalPullRequest');
 const checkPullRequestTemplateModule =
   require('../lib/checkPullRequestTemplate');
-const newCodeOwnerModule = require('../lib/checkForNewCodeowner');
 const { google } = require('googleapis');
 const { OAuth2Client } = require('google-auth-library');
 
@@ -52,13 +51,14 @@ describe('Api For Sheets Module', () => {
 
   beforeEach(function (done) {
     spyOn(scheduler, 'createScheduler').and.callFake(() => { });
-    spyOn(checkPullRequestJobModule, 'checkForNewJob').and.callFake(() => { });
+    spyOn(
+      checkPullRequestJobModule, 'checkForModificationsToFiles'
+    ).and.callFake(() => { });
     spyOn(checkPullRequestBranchModule, 'checkBranch').and.callFake(() => { });
     spyOn(checkCriticalPullRequestModule, 'checkIfPRAffectsDatastoreLayer')
       .and.callFake(() => { });
     spyOn(checkPullRequestTemplateModule, 'checkTemplate')
       .and.callFake(() => { });
-    spyOn(newCodeOwnerModule, 'checkForNewCodeowner').and.callFake(() => { });
 
     github = {
       issues: {
@@ -124,7 +124,9 @@ describe('Api For Sheets Module', () => {
 
     it('should call other checks', () => {
       expect(checkPullRequestBranchModule.checkBranch).toHaveBeenCalled();
-      expect(checkPullRequestJobModule.checkForNewJob).toHaveBeenCalled();
+      expect(
+        checkPullRequestJobModule.checkForModificationsToFiles
+      ).toHaveBeenCalled();
     });
 
     it('should be called for the given payload', () => {
@@ -432,7 +434,9 @@ describe('Api For Sheets Module', () => {
     it('should not call any checks', () => {
       expect(checkPullRequestBranchModule.checkBranch).not.toHaveBeenCalled();
       expect(apiForSheetsModule.checkClaStatus).not.toHaveBeenCalled();
-      expect(checkPullRequestJobModule.checkForNewJob).not.toHaveBeenCalled();
+      expect(
+        checkPullRequestJobModule.checkForModificationsToFiles
+      ).not.toHaveBeenCalled();
     });
   });
 
@@ -450,7 +454,9 @@ describe('Api For Sheets Module', () => {
     it('should not call any checks', () => {
       expect(checkPullRequestBranchModule.checkBranch).not.toHaveBeenCalled();
       expect(apiForSheetsModule.checkClaStatus).not.toHaveBeenCalled();
-      expect(checkPullRequestJobModule.checkForNewJob).not.toHaveBeenCalled();
+      expect(
+        checkPullRequestJobModule.checkForModificationsToFiles
+      ).not.toHaveBeenCalled();
     });
   });
 });
diff --git a/spec/checkCriticalPullRequestSpec.js b/spec/checkCriticalPullRequestSpec.js
index 110864ba..ee6182f7 100644
--- a/spec/checkCriticalPullRequestSpec.js
+++ b/spec/checkCriticalPullRequestSpec.js
@@ -29,7 +29,6 @@ const checkCriticalPullRequestModule =
   require('../lib/checkCriticalPullRequest');
 const checkPullRequestTemplateModule =
   require('../lib/checkPullRequestTemplate');
-const newCodeOwnerModule = require('../lib/checkForNewCodeowner');
 const scheduler = require('../lib/scheduler');
 
 let payloadData = JSON.parse(
@@ -191,14 +190,15 @@ describe('Critical Pull Request Spec', () => {
 
     app = robot.load(oppiaBot);
     spyOn(app, 'auth').and.resolveTo(github);
-    spyOn(checkPullRequestJobModule, 'checkForNewJob').and.callFake(() => { });
+    spyOn(
+      checkPullRequestJobModule, 'checkForModificationsToFiles'
+    ).and.callFake(() => { });
     spyOn(checkCronJobModule, 'checkForNewCronJob').and.callFake(() => { });
     spyOn(apiForSheetsModule, 'checkClaStatus').and.callFake(() => { });
     spyOn(checkPullRequestBranchModule, 'checkBranch').and.callFake(() => { });
     spyOn(
       checkPullRequestTemplateModule, 'checkTemplate'
     ).and.callFake(() => { });
-    spyOn(newCodeOwnerModule, 'checkForNewCodeowner').and.callFake(() => { });
 
     spyOn(
       checkCriticalPullRequestModule, 'checkIfPRAffectsDatastoreLayer'
diff --git a/spec/checkForNewCodeownerSpec.js b/spec/checkForNewCodeownerSpec.js
deleted file mode 100644
index 1afedab8..00000000
--- a/spec/checkForNewCodeownerSpec.js
+++ /dev/null
@@ -1,420 +0,0 @@
-// Copyright 2020 The Oppia Authors. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS-IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-/**
- * @fileoverview Spec for new code owner checks.
- */
-
-require('dotenv').config();
-const { createProbot } = require('probot');
-// The plugin refers to the actual app in index.js.
-const oppiaBot = require('../index');
-const checkPullRequestJobModule = require('../lib/checkPullRequestJob');
-const checkCronJobModule = require('../lib/checkNewCronJobs');
-const checkCriticalPullRequestModule =
-  require('../lib/checkCriticalPullRequest');
-const newCodeOwnerModule = require('../lib/checkForNewCodeowner');
-const mergeConflictModule = require('../lib/checkMergeConflicts');
-const utils = require('../lib/utils');
-const scheduler = require('../lib/scheduler');
-let payloadData = JSON.parse(
-  JSON.stringify(require('../fixtures/pullRequestPayload.json'))
-);
-
-describe('Check for new code owner', () => {
-  /**
-   * @type {import('probot').Probot} robot
-   */
-  let robot;
-
-  /**
-   * @type {import('probot').Octokit} github
-   */
-  let github;
-
-  /**
-   * @type {import('probot').Application} app
-   */
-  let app;
-
-  const mainCodeOwnerFile = `# Speed Improvement team.
-    /app_dev.yaml @vojtechjelinek
-    /core/templates/google-analytics.initializer.ts @jameesjohn @vojtechjelinek
-    /core/templates/base-components/ @jameesjohn @vojtechjelinek
-    /core/templates/pages/Base.ts @jameesjohn @vojtechjelinek
-    /core/templates/pages/oppia_footer_directive.html
-    @jameesjohn @vojtechjelinek
-    /core/templates/pages/OppiaFooterDirective.ts @jameesjohn @vojtechjelinek
-    /core/templates/pages/footer_js_libs.html @jameesjohn @vojtechjelinek
-    /core/templates/pages/header_css_libs.html @jameesjohn @vojtechjelinek
-    /core/templates/services/csrf-token.service*.ts @jameesjohn @vojtechjelinek
-    /core/templates/third-party-imports/ @nishantwrp @vojtechjelinek
-    /jinja_utils*.py @jameesjohn @vojtechjelinek
-    /.lighthouserc.json @jimbyo @jameesjohn @vojtechjelinek
-    /puppeteer-login-script.js @jimbyo
-    /scripts/run_lighthouse_tests.py @jameesjohn @vojtechjelinek
-    /webpack.common.config.ts @jameesjohn @vojtechjelinek
-    /webpack.common.macros.ts @jameesjohn @vojtechjelinek
-    /webpack.dev.config.ts @jameesjohn @vojtechjelinek
-    /webpack.prod.config.ts @jameesjohn @vojtechjelinek
-    /webpack.terser.config.ts @nishantwrp @vojtechjelinek`;
-
-  const nonCodeOwnerFile = {
-    sha: 'd144f32b9812373d5f1bc9f94d9af795f09023ff',
-    filename: 'core/domain/exp_fetchers.py',
-    status: 'added',
-    additions: 1,
-    deletions: 0,
-    changes: 1,
-    blob_url:
-      'https://github.com/oppia/oppia/blob/67fb4a973b318882af3b5a894130' +
-      'e110d7e9833c/core/domain/exp_fetchers.py',
-    raw_url:
-      'https://github.com/oppia/oppia/raw/67fb4a973b318882af3b5a894130e' +
-      '110d7e9833c/core/domain/exp_fetchers.py',
-    contents_url:
-      'https://api.github.com/repos/oppia/oppia/contents/core/domain/exp' +
-      '_fetchers.py?ref=67fb4a973b318882af3b5a894130e110d7e9833c',
-    patch:
-      '@@ -0,0 +1 @@\n+# def _migrate_states_schema(versioned_exploration' +
-      '_states, exploration_id):',
-  };
-
-  const codeOwnerFileWithNewUser = {
-    sha: '6911619e95dfcb11eb2204fba88987e5abf02352',
-    filename: '.github/CODEOWNERS',
-    status: 'modified',
-    additions: 2,
-    deletions: 0,
-    changes: 2,
-    blob_url:
-      'https://github.com/oppia/oppia/blob/c876111ec9c743179483d7ca75e348' +
-      'b8680b13ec/.github/CODEOWNERS',
-    raw_url:
-      'https://github.com/oppia/oppia/raw/c876111ec9c743179483d7ca75e348b8' +
-      '680b13ec/.github/CODEOWNERS',
-    contents_url:
-      'https://api.github.com/repos/oppia/oppia/contents/.github/CODEOWNERS' +
-      '?ref=c876111ec9c743179483d7ca75e348b8680b13ec',
-    patch:
-      '@@ -523,7 +523,9 @@\n' +
-      ' /core/templates/pages/pending-account-deletion-page/ ' +
-      '@jameesjohn @vojtechjelinek\n' +
-      ' /core/templates/pages/preferences-page/ @jameesjohn @vojtechjelinek\n' +
-      '+/core/templates/pages/signup-page/ @testuser @vojtechjelinek\n' +
-      ' /core/templates/pages/splash-page/ @jameesjohn @vojtechjelinek\n' +
-      ' /core/templates/pages/teach-page/ @jameesjohn @vojtechjelinek\n' +
-      ' /core/templates/pages/thanks-page/ @jameesjohn @vojtechjelinek\n' +
-      ' ',
-  };
-
-  const codeOwnerFileWithMultipleNewUsers = {
-    sha: '6911619e95dfcb11eb2204fba88987e5abf02352',
-    filename: '.github/CODEOWNERS',
-    status: 'modified',
-    additions: 2,
-    deletions: 0,
-    changes: 2,
-    blob_url:
-      'https://github.com/oppia/oppia/blob/c876111ec9c743179483d7ca75e348b' +
-      '8680b13ec/.github/CODEOWNERS',
-    raw_url:
-      'https://github.com/oppia/oppia/raw/c876111ec9c743179483d7ca75e348b8' +
-      '680b13ec/.github/CODEOWNERS',
-    contents_url:
-      'https://api.github.com/repos/oppia/oppia/contents/.github/CODEOWNERS' +
-      '?ref=c876111ec9c743179483d7ca75e348b8680b13ec',
-    patch:
-      '@@ -523,7 +523,9 @@\n' +
-      ' /core/templates/pages/pending-account-deletion-page/ ' +
-      '@jameesjohn @vojtechjelinek\n' +
-      ' /core/templates/pages/preferences-page/ @jameesjohn @vojtechjelinek\n' +
-      ' /core/templates/pages/signup-page/ @jameesjohn @vojtechjelinek\n' +
-      '+/core/templates/pages/signup-page/ @testuser @vojtechjelinek\n' +
-      ' /core/templates/pages/splash-page/ @jameesjohn @vojtechjelinek\n' +
-      '+/core/templates/pages/signdown-page/ @testuser2 @jameesjohn\n' +
-      ' /core/templates/pages/teach-page/ @jameesjohn @vojtechjelinek\n' +
-      ' /core/templates/pages/thanks-page/ @jameesjohn @vojtechjelinek\n' +
-      ' ',
-  };
-
-  const codeOwnerFileWithNewExistingUser = {
-    sha: '6911619e95dfcb11eb2204fba88987e5abf02352',
-    filename: '.github/CODEOWNERS',
-    status: 'modified',
-    additions: 2,
-    deletions: 0,
-    changes: 2,
-    blob_url:
-      'https://github.com/oppia/oppia/blob/c876111ec9c743179483d7ca75e348b86' +
-      '80b13ec/.github/CODEOWNERS',
-    raw_url:
-      'https://github.com/oppia/oppia/raw/c876111ec9c743179483d7ca75e348b868' +
-      '0b13ec/.github/CODEOWNERS',
-    contents_url:
-      'https://api.github.com/repos/oppia/oppia/contents/.github/CODEOWNERS' +
-      '?ref=c876111ec9c743179483d7ca75e348b8680b13ec',
-    patch:
-      '@@ -523,7 +523,9 @@\n' +
-      ' /core/templates/pages/pending-account-deletion-page/ ' +
-      '@jameesjohn @vojtechjelinek\n' +
-      ' /core/templates/pages/preferences-page/ @jameesjohn @vojtechjelinek\n' +
-      ' /core/templates/pages/signup-page/ @jameesjohn @vojtechjelinek\n' +
-      '+/core/templates/pages/signup-page/ @jameesjohn @vojtechjelinek\n' +
-      ' /core/templates/pages/splash-page/ @jameesjohn @vojtechjelinek\n' +
-      '+/core/templates/pages/signup-page/ @vojtechjelinek @jameesjohn\n' +
-      ' /core/templates/pages/teach-page/ @jameesjohn @vojtechjelinek\n' +
-      ' /core/templates/pages/thanks-page/ @jameesjohn @vojtechjelinek\n' +
-      ' ',
-  };
-  beforeAll(() => {
-    payloadData.payload.action = 'synchronize';
-  });
-
-  beforeEach(() => {
-    spyOn(scheduler, 'createScheduler').and.callFake(() => { });
-
-    github = {
-      issues: {
-        createComment: jasmine.createSpy('createComment').and.returnValue({}),
-      },
-    };
-
-    robot = createProbot({
-      id: 1,
-      cert: 'test',
-      githubToken: 'test',
-    });
-
-    app = robot.load(oppiaBot);
-    spyOn(app, 'auth').and.resolveTo(github);
-    spyOn(checkPullRequestJobModule, 'checkForNewJob').and.callFake(() => { });
-    spyOn(checkCronJobModule, 'checkForNewCronJob').and.callFake(() => { });
-    spyOn(
-      checkCriticalPullRequestModule,
-      'checkIfPRAffectsDatastoreLayer'
-    ).and.callFake(() => { });
-    spyOn(mergeConflictModule, 'checkMergeConflictsInPullRequest')
-      .and.callFake(() => { });
-    spyOn(newCodeOwnerModule, 'checkForNewCodeowner').and.callThrough();
-    spyOn(utils, 'getMainCodeOwnerfile').and.resolveTo(mainCodeOwnerFile);
-  });
-
-  describe('When a new code owner gets added', () => {
-    beforeEach(() => {
-      github.pulls = {
-        listFiles: jasmine.createSpy('listFiles').and.resolveTo({
-          data: [nonCodeOwnerFile, codeOwnerFileWithNewUser],
-        }),
-      };
-      payloadData.payload.pull_request.changed_files = 2;
-    });
-
-    describe('and there is no changelog label', () => {
-      beforeEach(async () => {
-        const reviewer = {
-          login: 'reviewer'
-        };
-        payloadData.payload.pull_request.requested_reviewers.push(reviewer);
-        await robot.receive(payloadData);
-      });
-
-      it('should check for new code owner', () => {
-        expect(newCodeOwnerModule.checkForNewCodeowner).toHaveBeenCalled();
-      });
-
-      it('should get all modified files', () => {
-        expect(github.pulls.listFiles).toHaveBeenCalled();
-      });
-
-      it('should get codeowner file from develop', () => {
-        expect(utils.getMainCodeOwnerfile).toHaveBeenCalled();
-      });
-
-      it('should ping reviewer', () => {
-        expect(github.issues.createComment).toHaveBeenCalledWith({
-          repo: payloadData.payload.repository.name,
-          owner: payloadData.payload.repository.owner.login,
-          issue_number: payloadData.payload.pull_request.number,
-          body:
-            'Hi @DubeySandeep, this PR adds a new code owner, @testuser to ' +
-            '/core/templates/pages/signup-page/. Please make sure the changes' +
-            ' are verified by the previous codeowner(s) of the file. Thanks!'
-        });
-      });
-
-      afterEach(() => {
-        payloadData.payload.pull_request.requested_reviewers.pop();
-      });
-    });
-  });
-
-  describe('When multiple new code owners get added', () => {
-    beforeEach(async () => {
-      github.pulls = {
-        listFiles: jasmine.createSpy('listFiles').and.resolveTo({
-          data: [nonCodeOwnerFile, codeOwnerFileWithMultipleNewUsers],
-        }),
-      };
-      payloadData.payload.pull_request.changed_files = 2;
-      await robot.receive(payloadData);
-    });
-    it('should check for new code owner', () => {
-      expect(newCodeOwnerModule.checkForNewCodeowner).toHaveBeenCalled();
-    });
-
-    it('should get all modified files', () => {
-      expect(github.pulls.listFiles).toHaveBeenCalled();
-    });
-
-    it('should get codeowner file from develop', () => {
-      expect(utils.getMainCodeOwnerfile).toHaveBeenCalled();
-    });
-
-    it('should ping project owner', () => {
-      expect(github.issues.createComment).toHaveBeenCalled();
-      expect(github.issues.createComment).toHaveBeenCalledWith({
-        repo: payloadData.payload.repository.name,
-        owner: payloadData.payload.repository.owner.login,
-        issue_number: payloadData.payload.pull_request.number,
-        body:
-          'Hi @DubeySandeep, this PR adds the following new code owners ' +
-          '@testuser, @testuser2 to the following files ' +
-          '/core/templates/pages/signup-page/, ' +
-          '/core/templates/pages/signdown-page/' +
-          '. Please make sure the changes are ' +
-          'verified by the previous codeowner(s) of the file. Thanks!'
-      });
-    });
-
-    afterEach(() => {
-      payloadData.payload.pull_request.labels.pop();
-    });
-  });
-
-  describe('When an exisiting code owner gets added to another file', () => {
-    beforeEach(async () => {
-      github.pulls = {
-        listFiles: jasmine.createSpy('listFiles').and.resolveTo({
-          data: [nonCodeOwnerFile, codeOwnerFileWithNewExistingUser],
-        }),
-      };
-      payloadData.payload.pull_request.changed_files = 2;
-      await robot.receive(payloadData);
-    });
-    it('should check for new code owner', () => {
-      expect(newCodeOwnerModule.checkForNewCodeowner).toHaveBeenCalled();
-    });
-
-    it('should get all modified files', () => {
-      expect(github.pulls.listFiles).toHaveBeenCalled();
-    });
-
-    it('should get codeowner file from develop', () => {
-      expect(utils.getMainCodeOwnerfile).toHaveBeenCalled();
-    });
-
-    it('should not ping project owner', () => {
-      expect(github.issues.createComment).not.toHaveBeenCalled();
-    });
-
-    afterEach(() => {
-      payloadData.payload.pull_request.labels.pop();
-    });
-  });
-
-  describe('When codeowner file is not modified', () => {
-    beforeEach(async () => {
-      github.pulls = {
-        listFiles: jasmine.createSpy('listFiles').and.resolveTo({
-          data: [nonCodeOwnerFile],
-        }),
-      };
-      payloadData.payload.pull_request.changed_files = 1;
-      await robot.receive(payloadData);
-    });
-    it('should check for new code owner', () => {
-      expect(newCodeOwnerModule.checkForNewCodeowner).toHaveBeenCalled();
-    });
-
-    it('should get all modified files', () => {
-      expect(github.pulls.listFiles).toHaveBeenCalled();
-    });
-
-    it('should not get codeowner file from develop', () => {
-      expect(utils.getMainCodeOwnerfile).not.toHaveBeenCalled();
-    });
-
-    it('should not ping project owner', () => {
-      expect(github.issues.createComment).not.toHaveBeenCalled();
-    });
-
-    afterEach(() => {
-      payloadData.payload.pull_request.labels.pop();
-    });
-  });
-
-  it('Should get new codeowner from files', () => {
-    spyOn(newCodeOwnerModule, 'getNewCodeOwners').and.callThrough();
-
-    // Payload from https://github.com/oppia/oppia/pull/10534.
-    const fileWithComments = {
-      sha: '6911619e95dfcb11eb2204fba88987e5abf02352',
-      filename: '.github/CODEOWNERS',
-      status: 'modified',
-      additions: 82,
-      deletions: 58,
-      changes: 140,
-      blob_url:
-        'https://github.com/oppia/oppia/blob/c876111ec9c743179483d7ca75e348b' +
-        '8680b13ec/.github/CODEOWNERS',
-      raw_url:
-        'https://github.com/oppia/oppia/raw/c876111ec9c743179483d7ca75e348b8' +
-        '680b13ec/.github/CODEOWNERS',
-      contents_url:
-        'https://api.github.com/repos/oppia/oppia/contents/.github/CODEOWNERS' +
-        '?ref=c876111ec9c743179483d7ca75e348b8680b13ec',
-      patch:
-        '-/extensions/ @vojtechjelinek\r\n+# TODO(#10538): Revert ownership ' +
-        'to @vojtechjelinek after 2020-09-06.\r\n+/extensions/ @seanlip\r\n/' +
-        'core/templates/services/UpgradedServices.ts @bansalnitish ' +
-        '@srijanreddy98\r\n/typings/ @ankita240796\r\n/tsconfig.json ' +
-        '@ankita240796\r\n-/tsconfig-strict.json @nishantwrp @vojtechjelinek' +
-        '\r\n+# TODO(#10538): Add @vojtechjelinek as an owner after 2020-09-' +
-        '06.\r\n+/tsconfig-strict.json @nishantwrp\r\n-/core/controllers/' +
-        'resources*.py @vojtechjelinek\r\n+# TODO(#10538): Revert ownership ' +
-        'to @vojtechjelinek after 2020-09-06.\r\n-/core/controllers/' +
-        'resources*.py @seanlip'
-    };
-
-    let codeowners = newCodeOwnerModule.getNewCodeOwners(fileWithComments);
-    expect(codeowners.length).toBe(2);
-    expect(codeowners).toEqual(['@seanlip', '@nishantwrp']);
-
-    codeowners = newCodeOwnerModule.getNewCodeOwners(nonCodeOwnerFile);
-    expect(codeowners.length).toBe(0);
-
-    codeowners = newCodeOwnerModule.getNewCodeOwners(codeOwnerFileWithNewUser);
-    expect(codeowners.length).toBe(2);
-    expect(codeowners).toEqual(['@testuser', '@vojtechjelinek']);
-
-    codeowners = newCodeOwnerModule.getNewCodeOwners(
-      codeOwnerFileWithMultipleNewUsers
-    );
-    expect(codeowners.length).toBe(4);
-    expect(codeowners).toEqual([
-      '@testuser', '@vojtechjelinek', '@testuser2', '@jameesjohn'
-    ]);
-  });
-});
diff --git a/spec/checkMergeConflictSpec.js b/spec/checkMergeConflictSpec.js
index 16ce71a7..774adc71 100644
--- a/spec/checkMergeConflictSpec.js
+++ b/spec/checkMergeConflictSpec.js
@@ -20,7 +20,6 @@ const checkMergeConflictModule = require('../lib/checkMergeConflicts');
 const scheduler = require('../lib/scheduler');
 const checkPullRequestJobModule = require('../lib/checkPullRequestJob');
 const checkCronJobModule = require('../lib/checkNewCronJobs');
-const newCodeOwnerModule = require('../lib/checkForNewCodeowner');
 const checkCriticalPullRequestModule = require(
   '../lib/checkCriticalPullRequest'
 );
@@ -74,9 +73,10 @@ describe('Merge Conflict Check', () => {
 
     app = robot.load(oppiaBot);
     spyOn(app, 'auth').and.resolveTo(github);
-    spyOn(checkPullRequestJobModule, 'checkForNewJob').and.callFake(() => { });
+    spyOn(
+      checkPullRequestJobModule, 'checkForModificationsToFiles'
+    ).and.callFake(() => { });
     spyOn(checkCronJobModule, 'checkForNewCronJob').and.callFake(() => { });
-    spyOn(newCodeOwnerModule, 'checkForNewCodeowner').and.callFake(() => { });
     spyOn(
       checkCriticalPullRequestModule,
       'checkIfPRAffectsDatastoreLayer'
diff --git a/spec/checkNewCronJobSpec.js b/spec/checkNewCronJobSpec.js
index 6f7a4766..19003431 100644
--- a/spec/checkNewCronJobSpec.js
+++ b/spec/checkNewCronJobSpec.js
@@ -26,9 +26,8 @@ const checkCriticalPullRequestModule =
   require('../lib/checkCriticalPullRequest');
 const checkPullRequestTemplateModule =
   require('../lib/checkPullRequestTemplate');
-const newCodeOwnerModule = require('../lib/checkForNewCodeowner');
 const scheduler = require('../lib/scheduler');
-const { JOBS_AND_FETURES_TESTING_WIKI_LINK } = require('../lib/utils');
+const { JOBS_AND_FEATURES_TESTING_WIKI_LINK } = require('../lib/utils');
 let payloadData = JSON.parse(
   JSON.stringify(require('../fixtures/pullRequestPayload.json'))
 );
@@ -200,7 +199,8 @@ describe('Cron Job Spec', () => {
     spyOn(app, 'auth').and.resolveTo(github);
     spyOn(checkCronJobModule, 'checkForNewCronJob').and.callThrough();
     spyOn(
-      checkPullRequestJobModule, 'checkForNewJob').and.callFake(() => { });
+      checkPullRequestJobModule, 'checkForModificationsToFiles'
+    ).and.callFake(() => { });
     spyOn(apiForSheetsModule, 'checkClaStatus').and.callFake(() => { });
     spyOn(
       checkCriticalPullRequestModule, 'checkIfPRAffectsDatastoreLayer'
@@ -209,7 +209,6 @@ describe('Cron Job Spec', () => {
     spyOn(
       checkPullRequestTemplateModule, 'checkTemplate'
     ).and.callFake(() => { });
-    spyOn(newCodeOwnerModule, 'checkForNewCodeowner').and.callFake(() => { });
   });
 
   describe('When a new cron job is added in a pull request', () => {
@@ -242,7 +241,7 @@ describe('Cron Job Spec', () => {
       );
       const newLineFeed = '<br>';
       const wikiLinkText = 'this guide'.link(
-        JOBS_AND_FETURES_TESTING_WIKI_LINK);
+        JOBS_AND_FEATURES_TESTING_WIKI_LINK);
 
       expect(github.issues.createComment).toHaveBeenCalledWith({
         issue_number: payloadData.payload.pull_request.number,
@@ -309,7 +308,7 @@ describe('Cron Job Spec', () => {
       );
       const newLineFeed = '<br>';
       const wikiLinkText = 'this guide'.link(
-        JOBS_AND_FETURES_TESTING_WIKI_LINK);
+        JOBS_AND_FEATURES_TESTING_WIKI_LINK);
 
       expect(github.issues.createComment).toHaveBeenCalledWith({
         issue_number: payloadData.payload.pull_request.number,
@@ -406,7 +405,7 @@ describe('Cron Job Spec', () => {
       );
       const newLineFeed = '<br>';
       const wikiLinkText = 'this guide'.link(
-        JOBS_AND_FETURES_TESTING_WIKI_LINK);
+        JOBS_AND_FEATURES_TESTING_WIKI_LINK);
 
       expect(github.issues.createComment).toHaveBeenCalledWith({
         issue_number: payloadData.payload.pull_request.number,
@@ -462,7 +461,7 @@ describe('Cron Job Spec', () => {
       );
       const newLineFeed = '<br>';
       const wikiLinkText = 'this guide'.link(
-        JOBS_AND_FETURES_TESTING_WIKI_LINK);
+        JOBS_AND_FEATURES_TESTING_WIKI_LINK);
 
       expect(github.issues.createComment).toHaveBeenCalledWith({
         issue_number: payloadData.payload.pull_request.number,
diff --git a/spec/checkPullRequestBranchSpec.js b/spec/checkPullRequestBranchSpec.js
index befcdb02..0ffe5a4f 100644
--- a/spec/checkPullRequestBranchSpec.js
+++ b/spec/checkPullRequestBranchSpec.js
@@ -26,7 +26,6 @@ const checkCriticalPullRequestModule =
   require('../lib/checkCriticalPullRequest');
 const checkPullRequestTemplateModule =
   require('../lib/checkPullRequestTemplate');
-const newCodeOwnerModule = require('../lib/checkForNewCodeowner');
 
 describe('Pull Request Branch Check', () => {
   /**
@@ -49,13 +48,13 @@ describe('Pull Request Branch Check', () => {
 
     // Spy on other modules that will be triggered by the payload.
     spyOn(apiForSheetsModule, 'checkClaStatus').and.callFake(() => { });
-    spyOn(checkPullRequestJobModule, 'checkForNewJob')
-      .and.callFake(() => { });
+    spyOn(
+      checkPullRequestJobModule, 'checkForModificationsToFiles'
+    ).and.callFake(() => { });
     spyOn(checkCriticalPullRequestModule, 'checkIfPRAffectsDatastoreLayer')
       .and.callFake(() => { });
     spyOn(checkPullRequestTemplateModule, 'checkTemplate')
       .and.callFake(() => { });
-    spyOn(newCodeOwnerModule, 'checkForNewCodeowner').and.callFake(() => { });
 
     github = {
       issues: {
diff --git a/spec/checkPullRequestJobSpec.js b/spec/checkPullRequestJobSpec.js
index 521f3868..7d9d14e6 100644
--- a/spec/checkPullRequestJobSpec.js
+++ b/spec/checkPullRequestJobSpec.js
@@ -1,4 +1,3 @@
-// Copyright 2020 The Oppia Authors. All Rights Reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -24,10 +23,9 @@ const checkCriticalPullRequestModule =
   require('../lib/checkCriticalPullRequest');
 const checkPullRequestTemplateModule =
   require('../lib/checkPullRequestTemplate');
-const newCodeOwnerModule = require('../lib/checkForNewCodeowner');
 const scheduler = require('../lib/scheduler');
 const checkCronJobModule = require('../lib/checkNewCronJobs');
-const { JOBS_AND_FETURES_TESTING_WIKI_LINK } = require('../lib/utils');
+const { JOBS_AND_FEATURES_TESTING_WIKI_LINK } = require('../lib/utils');
 
 let payloadData = JSON.parse(
   JSON.stringify(require('../fixtures/pullRequestPayload.json'))
@@ -432,7 +430,9 @@ describe('Pull Request Job Spec', () => {
 
     app = robot.load(oppiaBot);
     spyOn(app, 'auth').and.resolveTo(github);
-    spyOn(checkPullRequestJobModule, 'checkForNewJob').and.callThrough();
+    spyOn(
+      checkPullRequestJobModule, 'checkForModificationsToFiles'
+    ).and.callThrough();
     spyOn(apiForSheetsModule, 'checkClaStatus').and.callFake(() => { });
     spyOn(
       checkCriticalPullRequestModule, 'checkIfPRAffectsDatastoreLayer'
@@ -442,7 +442,6 @@ describe('Pull Request Job Spec', () => {
     spyOn(
       checkPullRequestTemplateModule, 'checkTemplate'
     ).and.callFake(() => { });
-    spyOn(newCodeOwnerModule, 'checkForNewCodeowner').and.callFake(() => { });
   });
 
   describe('When a new job file is created in a pull request', () => {
@@ -457,7 +456,9 @@ describe('Pull Request Job Spec', () => {
     });
 
     it('should check for jobs', () => {
-      expect(checkPullRequestJobModule.checkForNewJob).toHaveBeenCalled();
+      expect(
+      checkPullRequestJobModule.checkForModificationsToFiles
+    ).toHaveBeenCalled();
     });
 
     it('should get modified files', () => {
@@ -472,7 +473,7 @@ describe('Pull Request Job Spec', () => {
       );
       const newLineFeed = '<br>';
       const wikiLinkText = 'this guide'.link(
-        JOBS_AND_FETURES_TESTING_WIKI_LINK);
+        JOBS_AND_FEATURES_TESTING_WIKI_LINK);
       const jobNameLink = (
         'FirstTestJob'.link(firstNewJobFileObj.blob_url)
       );
@@ -481,10 +482,9 @@ describe('Pull Request Job Spec', () => {
         issue_number: payloadData.payload.pull_request.number,
         body:
           'Hi @vojtechjelinek, @DubeySandeep, @kevintab95, PTAL at this PR, ' +
-          'it adds a new job. The name of the job is ' + jobNameLink + '.' +
-          newLineFeed +
+          'it modifies files in jobs or platform folders.' + newLineFeed +
           'Also @' + author + ', please make sure to fill in the ' + formText +
-          ' for the new job to be tested on the backup server. ' +
+          ' for the new job or feature to be tested on the backup server. ' +
           'This PR can be merged only after the test run is successful. ' +
           'Please refer to ' + wikiLinkText + ' for details.' +
           newLineFeed + 'Thanks!',
@@ -531,7 +531,9 @@ describe('Pull Request Job Spec', () => {
     });
 
     it('should check for jobs', () => {
-      expect(checkPullRequestJobModule.checkForNewJob).toHaveBeenCalled();
+      expect(
+        checkPullRequestJobModule.checkForModificationsToFiles
+      ).toHaveBeenCalled();
     });
 
     it('should get modified files', () => {
@@ -546,7 +548,7 @@ describe('Pull Request Job Spec', () => {
       );
       const newLineFeed = '<br>';
       const wikiLinkText = 'this guide'.link(
-        JOBS_AND_FETURES_TESTING_WIKI_LINK);
+        JOBS_AND_FEATURES_TESTING_WIKI_LINK);
       const jobRegistryLink = (
         'job registry'.link(
           'https://github.com/oppia/oppia/blob/develop/core/jobs_registry.py')
@@ -561,10 +563,9 @@ describe('Pull Request Job Spec', () => {
         issue_number: payloadData.payload.pull_request.number,
         body:
           'Hi @vojtechjelinek, @DubeySandeep, @kevintab95, PTAL at this PR, ' +
-          'it adds new jobs. The jobs are ' + firstJobNameLink +
-          ', ' + secondJobNameLink + '.' + newLineFeed + 'Also @' +
-          author + ', please make sure to fill in the ' +
-          formText + ' for the new jobs to be tested on the backup server. ' +
+          'it modifies files in jobs or platform folders.' + newLineFeed + 
+          'Also @' + author + ', please make sure to fill in the ' + formText + 
+          ' for the new job or feature to be tested on the backup server. ' +
           'This PR can be merged only after the test run is successful. ' +
           'Please refer to ' + wikiLinkText + ' for details.' +
           newLineFeed + 'Thanks!',
@@ -611,7 +612,9 @@ describe('Pull Request Job Spec', () => {
     });
 
     it('should check for jobs', () => {
-      expect(checkPullRequestJobModule.checkForNewJob).toHaveBeenCalled();
+      expect(
+        checkPullRequestJobModule.checkForModificationsToFiles
+      ).toHaveBeenCalled();
     });
 
     it('should get modified files', () => {
@@ -626,7 +629,7 @@ describe('Pull Request Job Spec', () => {
       );
       const newLineFeed = '<br>';
       const wikiLinkText = 'this guide'.link(
-        JOBS_AND_FETURES_TESTING_WIKI_LINK);
+        JOBS_AND_FEATURES_TESTING_WIKI_LINK);
       const jobNameLink = (
         'FirstTestJob'.link(firstNewJobFileObj.blob_url)
       );
@@ -634,12 +637,11 @@ describe('Pull Request Job Spec', () => {
         issue_number: payloadData.payload.pull_request.number,
         body:
             'Hi @vojtechjelinek, @DubeySandeep, @kevintab95, PTAL at this ' +
-            'PR, it adds a new job. The name of the job is ' + jobNameLink + 
-            '.' + newLineFeed + 'Also @' + author +
-            ', please make sure to fill in the ' + formText +
-            ' for the new job to be tested on the backup server. ' +
-            'This PR can be merged only after the test run is successful. ' +
-            'Please refer to ' + wikiLinkText + ' for details.' +
+            'PR, it modifies files in jobs or platform folders.' + newLineFeed + 
+            'Also @' + author + ', please make sure to fill in the ' + 
+            formText + ' for the new job or feature to be tested on the ' +
+            'backup server. This PR can be merged only after the test run ' + 
+            'is successful. Please refer to ' + wikiLinkText + ' for details.' +
             newLineFeed + 'Thanks!',
         repo: payloadData.payload.repository.name,
         owner: payloadData.payload.repository.owner.login,
@@ -682,7 +684,9 @@ describe('Pull Request Job Spec', () => {
     });
 
     it('should check for jobs', () => {
-      expect(checkPullRequestJobModule.checkForNewJob).toHaveBeenCalled();
+      expect(
+        checkPullRequestJobModule.checkForModificationsToFiles
+      ).toHaveBeenCalled();
     });
 
     it('should get modified files', () => {
@@ -698,7 +702,7 @@ describe('Pull Request Job Spec', () => {
       );
       const newLineFeed = '<br>';
       const wikiLinkText = 'this guide'.link(
-        JOBS_AND_FETURES_TESTING_WIKI_LINK);
+        JOBS_AND_FEATURES_TESTING_WIKI_LINK);
       const jobRegistryLink = (
         'job registry'.link(
           'https://github.com/oppia/oppia/blob/develop/core/jobs_registry.py')
@@ -711,11 +715,11 @@ describe('Pull Request Job Spec', () => {
         issue_number: payloadData.payload.pull_request.number,
         body:
           'Hi @vojtechjelinek, @DubeySandeep, @kevintab95, PTAL at this PR, ' +
-          'it adds a new job. The name of the job is ' + jobNameLink +
-          '.' + newLineFeed + 'Also @' + author + ', please make sure to ' +
-          'fill in the ' + formText + ' for the new job to be tested on the ' +
-          'backup server. ' + 'This PR can be merged only after the test ' +
-          'run is successful. ' + 'Please refer to ' + wikiLinkText +
+          'it modifies files in jobs or platform folders.' + newLineFeed + 
+          'Also @' + author + ', please make sure to ' + 'fill in the ' + 
+          formText + ' for the new job or feature to be tested on the ' + 
+          'backup server. This PR can be merged only after the test ' +
+          'run is successful. Please refer to ' + wikiLinkText +
           ' for details.' + newLineFeed + 'Thanks!',
         repo: payloadData.payload.repository.name,
         owner: payloadData.payload.repository.owner.login,
@@ -743,44 +747,6 @@ describe('Pull Request Job Spec', () => {
     });
   });
 
-  describe('When an existing job file is modified with no new job', () => {
-    beforeEach(async () => {
-      github.pulls = {
-        listFiles: jasmine.createSpy('listFiles').and.resolveTo({
-          data: [
-            {
-              ...firstNewJobFileObj,
-              status: 'modified',
-              patch: '\n+# No job files present in the changes',
-            },
-          ],
-        }),
-      };
-
-      payloadData.payload.pull_request.changed_files = 1;
-      await robot.receive(payloadData);
-    });
-
-    it('should check for jobs', () => {
-      expect(checkPullRequestJobModule.checkForNewJob).toHaveBeenCalled();
-    });
-
-    it('should get modified files', () => {
-      expect(github.pulls.listFiles).toHaveBeenCalled();
-    });
-
-
-    it('should not ping server jobs admin', () => {
-      expect(github.issues.createComment).not.toHaveBeenCalled();
-    });
-    it('should not add datastore label', () => {
-      expect(github.issues.addLabels).not.toHaveBeenCalled();
-    });
-    it('should not assign server jobs admin', () => {
-      expect(github.issues.addAssignees).not.toHaveBeenCalled();
-    });
-  });
-
   describe('When no job file is modified in a pull request', () => {
     beforeEach(async () => {
       github.pulls = {
@@ -796,7 +762,9 @@ describe('Pull Request Job Spec', () => {
     });
 
     it('should check for jobs', () => {
-      expect(checkPullRequestJobModule.checkForNewJob).toHaveBeenCalled();
+      expect(
+        checkPullRequestJobModule.checkForModificationsToFiles
+      ).toHaveBeenCalled();
     });
 
     it('should not get modified files', () => {
@@ -823,7 +791,9 @@ describe('Pull Request Job Spec', () => {
     });
 
     it('should check for jobs', () => {
-      expect(checkPullRequestJobModule.checkForNewJob).toHaveBeenCalled();
+      expect(
+        checkPullRequestJobModule.checkForModificationsToFiles
+      ).toHaveBeenCalled();
     });
 
     it('should get modified files', () => {
@@ -850,7 +820,9 @@ describe('Pull Request Job Spec', () => {
     });
 
     it('should check for jobs', () => {
-      expect(checkPullRequestJobModule.checkForNewJob).toHaveBeenCalled();
+      expect(
+        checkPullRequestJobModule.checkForModificationsToFiles
+      ).toHaveBeenCalled();
     });
 
     it('should get modified files', () => {
@@ -880,7 +852,9 @@ describe('Pull Request Job Spec', () => {
     });
 
     it('should check for jobs', () => {
-      expect(checkPullRequestJobModule.checkForNewJob).toHaveBeenCalled();
+      expect(
+        checkPullRequestJobModule.checkForModificationsToFiles
+      ).toHaveBeenCalled();
     });
 
     it('should not get modified files', () => {
@@ -891,41 +865,4 @@ describe('Pull Request Job Spec', () => {
       expect(github.issues.createComment).not.toHaveBeenCalled();
     });
   });
-
-  describe('Returns appropriate job name', () => {
-    it('should return the correct job created in the file', () => {
-      let jobs = checkPullRequestJobModule.getNewJobsFromFile(
-        firstNewJobFileObj
-      );
-      expect(jobs.length).toBe(1);
-      expect(jobs[0]).toBe('FirstTestJob');
-
-      jobs = checkPullRequestJobModule.getNewJobsFromFile(secondNewJobFileObj);
-      expect(jobs.length).toBe(1);
-      expect(jobs[0]).toBe('SecondTestJob');
-
-      jobs = checkPullRequestJobModule.getNewJobsFromFile(
-        modifiedExistingJobFileObj
-      );
-      expect(jobs.length).toBe(1);
-      expect(jobs[0]).toBe('OppiabotContributionsJob');
-
-      jobs = checkPullRequestJobModule.getNewJobsFromFile(fileWithMultipleJobs);
-      expect(jobs.length).toBe(2);
-      expect(jobs[0]).toBe('TestJob');
-      expect(jobs[1]).toBe('AnotherTestJob');
-
-      jobs = checkPullRequestJobModule.getNewJobsFromFile(jobTestFile);
-      expect(jobs.length).toBe(0);
-
-      jobs = checkPullRequestJobModule.getNewJobsFromFile(
-        modifiedExistingJobFileObjWithJobClassInPatch);
-      expect(jobs.length).toBe(0);
-
-      jobs = checkPullRequestJobModule.getNewJobsFromFile(
-        jobFileObjWithJobClassInPatchAndNewJob);
-      expect(jobs.length).toBe(1);
-      expect(jobs[0]).toBe('AnotherTestJob');
-    });
-  });
 });
diff --git a/spec/checkPullRequestLabelsSpec.js b/spec/checkPullRequestLabelsSpec.js
index 50662e90..15df0f1f 100644
--- a/spec/checkPullRequestLabelsSpec.js
+++ b/spec/checkPullRequestLabelsSpec.js
@@ -81,7 +81,9 @@ describe('Pull Request Label Check', () => {
 
     app = robot.load(oppiaBot);
     spyOn(app, 'auth').and.resolveTo(github);
-    spyOn(checkPullRequestJobModule, 'checkForNewJob').and.callFake(() => { });
+    spyOn(
+      checkPullRequestJobModule, 'checkForModificationsToFiles'
+    ).and.callFake(() => { });
     spyOn(
       checkCriticalPullRequestModule, 'checkIfPRAffectsDatastoreLayer'
     ).and.callFake(() => { });
diff --git a/spec/checkPullRequestTemplateSpec.js b/spec/checkPullRequestTemplateSpec.js
index 02d393a0..4a438a95 100644
--- a/spec/checkPullRequestTemplateSpec.js
+++ b/spec/checkPullRequestTemplateSpec.js
@@ -27,7 +27,6 @@ const checkPullRequestLabelsModule = require('../lib/checkPullRequestLabels');
 const checkPullRequestBranchModule = require('../lib/checkPullRequestBranch');
 const checkCriticalPullRequestModule =
   require('../lib/checkCriticalPullRequest');
-const newCodeOwnerModule = require('../lib/checkForNewCodeowner');
 const scheduler = require('../lib/scheduler');
 const payloadData = JSON.parse(
   JSON.stringify(require('../fixtures/pullRequestPayload.json'))
@@ -289,7 +288,9 @@ describe('Pull Request Template', () => {
 
     app = robot.load(oppiaBot);
     spyOn(app, 'auth').and.resolveTo(github);
-    spyOn(checkPullRequestJobModule, 'checkForNewJob').and.callFake(() => { });
+    spyOn(
+      checkPullRequestJobModule, 'checkForModificationsToFiles'
+    ).and.callFake(() => { });
     spyOn(checkCronJobModule, 'checkForNewCronJob').and.callFake(() => { });
     spyOn(apiForSheetsModule, 'checkClaStatus').and.callFake(() => { });
     spyOn(
@@ -298,7 +299,6 @@ describe('Pull Request Template', () => {
     ).and.callFake(() => { });
     spyOn(checkPullRequestBranchModule, 'checkBranch').and.callFake(() => { });
     spyOn(checkPullRequestTemplateModule, 'checkTemplate').and.callThrough();
-    spyOn(newCodeOwnerModule, 'checkForNewCodeowner').and.callFake(() => { });
   });
 
   describe('when pull request with invalid template is created', () => {
diff --git a/userWhitelist.json b/userWhitelist.json
index f265951a..5ad67a45 100644
--- a/userWhitelist.json
+++ b/userWhitelist.json
@@ -27,7 +27,6 @@
     "aks681",
     "srijanreddy98"
   ],
-  "codeOwnerFileReviewer":"DubeySandeep",
   "teamLeads": {
     "onboardingTeam": "DubeySandeep",
     "releaseTeam": "vojtechjelinek",