A simple script to streamline job postings on Linkedin by hiding those from a configurable list of companies.

linkedin-filter.user.js

// ==UserScript==
// @name         LinkedIn Company Filter
// @namespace    http://axley.net/
// @version      0.1
// @description  Simple, configurable filter to ignore job postings from companies you've ruled out
// @author       You
// @match        https://www.linkedin.com/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=linkedin.com
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM.getValue
// @grant        GM.setValue
// @grant        GM_registerMenuCommand
// @run-at       document-end
// @downloadURL  https://gist.github.com/jaxley/6d340ca59360d94a8338dfb5e0c2a33b/raw/eee97d32c231f25651b6d49fbb6e3b33823402e5/linkedin-filter.user.js
// @updateURL    https://gist.github.com/jaxley/6d340ca59360d94a8338dfb5e0c2a33b
// @require      https://openuserjs.org/src/libs/sizzle/GM_config.js
// ==/UserScript==

(async function() {
    'use strict';
    const cfg = new GM_config({
        id: 'LinkedInFilterConfig',
        title: 'Script Settings', // Panel Title
        fields: {
             'blockedCompanies': // This is the id of the field
             {
                'label': 'Blocked Companies', // Appears next to field
                'type': 'string', // Makes this setting a text field
                'default': ["Gusto",
                              "Costco Wholesale",
                              "Grubhub", "DoorDash",
                              "Uber",
                              "Snap Inc.",
                              "Coinbase",
                              "Rippling",
                              "Starbucks",
                              "Meta",
                             "Peloton Interactive"]
             }
        }
    });

    cfg.onSave(() => prune(cfg.get('blockedCompanies')));

    const container = document.querySelector("body");

    const observerOptions = {
      childList: true,
      subtree: true,
    };

    async function prune(blockedCompanies) {

        let nodesToPrune = document.getElementsByClassName("job-card-container__primary-description");
        if (blockedCompanies && blockedCompanies.length > 0) {
            blockedCompanies = blockedCompanies.split(',');
        }
        for(let i = 0 ; i<nodesToPrune.length ; i++){
            const node = nodesToPrune[i];
            //console.log(`Processing node: ${node.innerText}`);
            if (blockedCompanies.includes(node.innerText)) {
                console.log(`Nuking node: ${node.innerText}`);
                const closest = node.closest(".discovery-templates-entity-item") || node.closest(".jobs-search-results__list-item")
                if (closest) {
                    closest.style.cssText += 'display:none';
                } else {
                    console.log(`Node ${node.innerText} closest parent not found.`);
                }
            }
        }
  }

  const observer = new MutationObserver((one, two) => prune(cfg.get('blockedCompanies')));
  observer.observe(container, observerOptions);

  GM_registerMenuCommand("Change settings", function(event) {
      cfg.open();
  }, {
      autoClose: true
  });
  prune(cfg.get('blockedCompanies'));
})();