{"id":2417936,"url":"https://alion.io/job/neo-senior-full-stack-engineer-browser-extension","title":"Senior Full-Stack Engineer - Browser Extension","company":{"id":25031,"name":"NEO","domain":"neo.ai","url":"https://alion.io/company/neo","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Tel Aviv, Israel"],"countries":["IL"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":81000,"max_usd":235000,"period":"year","method":"global_role_cell_scaled_by_country","sample_n":6426},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Amazon EventBridge","optional":false},{"name":"Amazon S3","optional":false},{"name":"AWS","optional":false},{"name":"AWS Lambda","optional":false},{"name":"Chrome DevTools","optional":false},{"name":"DLP","optional":false},{"name":"Go","optional":false},{"name":"JavaScript","optional":false},{"name":"Next.js","optional":false},{"name":"Node JS","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Pulumi","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-09-27T08:20:58Z","employer_posted_date":"2026-09-27","last_verified_at":"2026-10-13T10:57:50Z","board_verified":true,"closed_at":null,"days_open":16,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":16},"description":"About the Role\nWe're looking for a Senior Full-Stack Engineer to join our engineering team.\nYou'll work on our Chrome extension, a core part of our security platform that runs on managed endpoints across the enterprise and operates in the browser in real time. \nYou'll own Neo's policy enforcement engine in the browser, the layer that turns security policies into real-time decisions on every page users visit.\nAdditionally, you'll also build features across our backend services and web app.\nWhat You'll Do\nArchitect, build, and maintain our Chrome extension\nOwn features from design through production monitoring.\nDebug hard problems across the browser, the OS, and the backend.\nHelp shape the product's technical direction and raise the bar on code quality, testing, and release practices.\nBuild in-browser security capabilities: DOM inspection and manipulation, user-facing warning and blocking flows, and event capture.\nKeep the extension fast and invisible. Minimize page-load impact, memory footprint, and CPU usage on every site.\nDrive support for other Chromium browsers (Edge, Brave) and, over time, Firefox and Safari WebExtensions.\nManage Chrome extension publishing, versioning, and staged rollouts.\nBuild and extend the APIs and services that power the extension, including configuration delivery, real-time updates.\nBuild features in our React/TypeScript web app that let customers configure the product, review events, and manage deployments.\nTech You'll Work With\n Extension: TypeScript, Chrome Extensions APIs (Manifest V3, service workers, content scripts, native messaging)\nFrontend: React, Next.js\nBackend: [Node.js/TypeScript, Go, or similar], Postgres, EventBridge, SQS, S3, AWS Lambda, Pulumi\nInfrastructure: AWS\nWhat You'll Bring\n5+ years of professional software development experience in a relevant role\nExpert TypeScript/JavaScript and deep knowledge of browser fundamentals: DOM, event loop, cookies, storage, origins, CSP, and the extension security model.\nProduction experience with Manifest V3, including service workers, content scripts, and extension messaging.\nStrong React experience.\nBackend experience building and operating APIs and services.\nStrong debugging skills with Chrome DevTools, extension internals, and network tooling.\nA security mindset. You think about how a malicious page or a curious user could break what you build.\nBonus:\nExperience building security products: DLP, SSE/SWG, enterprise browser.\nFamiliarity with Chromium internals or browser source code.\nCross-browser extension development (Firefox, Safari).","description_format":"text","description_chars":2568,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Cybersecurity","Corporate Events","Application Security"],"lifecycle":[{"event":"open","at":"2026-10-13T04:00:40Z"}],"visa":[],"liveness":{"score":55,"band":"ok","label":"Likely open","p_open":1,"p_active":0.731,"p_room":0.75,"age_days":15,"expected_fill_days":22,"reasons":["conf:1","win:late"],"computed_at":"2026-10-13T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/neo-senior-full-stack-engineer-browser-extension","json_url":"https://alion.io/job/neo-senior-full-stack-engineer-browser-extension.json","meta":{"generated_at":"2026-10-13T13:26:10Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":20784,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-14T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":25031},"rest":"https://alion.io/mcp/rest/get_company?id=25031"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fneo-senior-full-stack-engineer-browser-extension"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fneo-senior-full-stack-engineer-browser-extension"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fneo-senior-full-stack-engineer-browser-extension"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/neo-senior-full-stack-engineer-browser-extension\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fneo-senior-full-stack-engineer-browser-extension"}]}