{"id":53136,"url":"https://alion.io/job/browserbase-software-engineer-agent-platform","title":"Software Engineer (Agent Platform)","company":{"id":13605,"name":"Browserbase","domain":"browserbase.com","url":"https://alion.io/company/browserbase","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":75,"open_postings":5,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-17T05:46:00Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":180000,"max":300000,"currency":"USD","period":"year","gross":null,"usd_annual":300000},"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Chrome DevTools","optional":false},{"name":"Go","optional":false},{"name":"OpenAI","optional":false},{"name":"Playwright","optional":false},{"name":"Python","optional":false},{"name":"Reinforcement Learning","optional":false},{"name":"Selenium","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2025-08-25T20:13:34Z","employer_posted_date":"2025-08-25","last_verified_at":"2026-10-17T05:22:37Z","board_verified":true,"closed_at":null,"days_open":417,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":417},"description":"About the Role\nAgent Platform is Browserbase’s framework for automating browsers with code. The Agent Platform team creates developer tools at the intersection of AI and open source, making browser automation smarter, simpler, and more powerful.\nWhat you'll do\nBuild, operate, and grow the Agent Platform framework - developer-first APIs with ~2M monthly downloads and ~17k stars. Design and implement tools that make automating the web simple and powerful.\n\nWork with frontier AI labs (OpenAI, Google, and others) to improve models, benchmark capabilities, and make them more accessible to developers.\n\nDeploy production-ready AI solutions that impact millions of customers, shaping the future of the web.\n\nHelp define, scope, and prioritize projects that shape the future of developer tooling.\n\nDocument as you go and share your knowledge with the team.\n\nTechnical skills:\nStrong coding skills: preferably TypeScript; also valuable: Python/Go.\n\nExperience building developer tools, frameworks, or libraries that others depend on.\n\nExperience building AI agents/LLMs, distributed systems, or applying reinforcement learning.\n\nFamiliarity with web automation frameworks (Puppeteer, Playwright, Selenium) or web scraping; huge bonus: Chrome DevTools Protocol (CDP) experience.\n\nTrack record of open source contributions or public developer projects.\n\nYou're a good fit if you:\nHave high agency: you can set direction, make judgment calls, and drive projects forward without waiting for perfect clarity.\n\nHave a strong sense of ownership and bias toward action.\n\nCan drive projects independently, with high accountability without much outside input.\n\nCommunicate clearly in writing and in person, and choose the right medium for the message.\n\nAre adaptable and able to dive into unfamiliar systems, learn quickly, and make sound technical decisions.\n\nEnjoy collaborating with a small, ambitious team in a fast-paced environment.\n\nAre excited to work 4 days a week (WFH Wednesday) in our San Francisco HQ (or open to relocating here).\n\nWhy join us:\nShape the future of browser automation with AI-driven developer tools.\n\nWork in the open: collaborate with and contribute to the broader open source community.\n\nCollaborate with a small, high-bar team of engineers who care deeply about quality.\n\nJoin an ambitious startup where your impact will be felt immediately.\n\nMore about Browserbase\nBrowserbase is the complete platform to build and deploy agents that browse and interact with the web like humans. We provide one API key for agents to search and fetch information, fill out forms, and replicate user actions.\nWe are a Series B startup that grew our revenue 5x in 2025 and are continuing to grow, fast. Backed by Kleiner Perkins, CRV, and Notable Capital, our team is building on our CEO's founding vision to power the world's best AI tools and help everyone automate the web.","description_format":"text","description_chars":2878,"description_truncated":false,"requirements":{"experience_years_min":null,"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":["AI Development Tools","Developer Tools","Web Scraping & Proxy Networks"],"lifecycle":[{"event":"open","at":"2025-08-25T20:13:34Z"},{"event":"open","at":"2026-09-25T22:14:21Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 5","filings_12m":5,"filings_prev_12m":1,"green_card_filings_12m":0,"median_offered_wage_usd":152500,"route":null,"cap_exempt":false,"checked_at":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":2}],"liveness":{"score":6,"band":"cold","label":"Long shot","p_open":1,"p_active":0.199,"p_room":0.28,"age_days":417,"expected_fill_days":33,"reasons":["conf:0","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":{"stated_usd_annual":300000,"is_top_pay":true},"html_url":"https://alion.io/job/browserbase-software-engineer-agent-platform","json_url":"https://alion.io/job/browserbase-software-engineer-agent-platform.json","meta":{"generated_at":"2026-10-17T06:37:49Z","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":8969,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-18T00:00:00Z"}},"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":13605},"rest":"https://alion.io/mcp/rest/get_company?id=13605"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fbrowserbase-software-engineer-agent-platform"},{"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%2Fbrowserbase-software-engineer-agent-platform"},{"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%2Fbrowserbase-software-engineer-agent-platform"},{"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/browserbase-software-engineer-agent-platform\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fbrowserbase-software-engineer-agent-platform"}]}