{"id":3359853,"url":"https://alion.io/job/retell-ai-staff-frontend-engineer","title":"Staff Frontend Engineer","company":{"id":4592,"name":"Retell AI","domain":"retellai.com","url":"https://alion.io/company/retell-ai","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":78,"open_postings":8,"ghost_share":0,"stale_share":0.875,"repost_share":0,"time_to_fill_p50_days":42,"computed_at":"2026-10-30T05:48:23Z"}},"role":"Frontend","role_family":"Frontend","seniority":"staff","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["San Francisco, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":225000,"max":350000,"currency":"USD","period":"year","gross":null,"usd_annual":350000},"salary_estimate":null,"experience_years_min":9,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"JavaScript","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":"Voice Agents","optional":false}],"status":"live","first_seen_at":"2026-10-27T20:15:43Z","employer_posted_date":"2026-10-27","last_verified_at":"2026-10-30T19:14:43Z","board_verified":true,"closed_at":null,"days_open":3,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":3},"description":"ABOUT RETELL AI\nRetell AI is using first-principles thinking to reimagine the call center with cutting-edge voice AI. Thousands of companies now use Retell's AI voice agents to handle sales, support, and logistics calls that once required large teams of human agents. Backed by Y Combinator, Alt Capital, and other leading investors, we've scaled to $80M in ARR with a team of 50, up from $5M at the start of 2025, and are now valued at over $1.5B.\nOur vision for 2026 is to build a modern CX platform where entire contact centers are powered by AI. Instead of basic automation that needs constant human tuning, we're creating intelligent AI “workers” that act as frontline agents, QA analysts, and managers, continuously executing, monitoring, and improving every customer interaction.\nWe're growing fast and looking for ambitious builders who want to tackle hard technical problems, move quickly, and have a real impact on one of the fastest-growing voice AI companies in the world.\nLet's build the future together.\nRecent recognition:\nNo. 1 Best Places to Work in the Bay Area, San Francisco Business Times 2026\n\nTop 50 AI Apps, a16z (2025)\n\n#3 Fastest-Growing Software Company, G2 Best Software Awards 2026\n\nBest Agentic AI Software, G2 Best Software Awards 2026\n\n#4 Fastest-Growing Software Vendor, Brex Benchmark 2025\n\nEnterprise Tech 30 Class of 2026, Nasdaq & Wing VC\n\nTop-Ranked Startup, Lean AI Leaderboard\n\nBacked by Y Combinator\n\nABOUT THE ROLE\nRetell AI transforms customer experience with voice AI for enterprises, including CVS/Aetna, American Airlines, Lenovo, and Grab.\nWe’re looking for a Staff Frontend Engineer to lead complex frontend projects and shape the user experience of our voice AI platform. You’ll build tools that help customers create, deploy, monitor, and improve AI voice agents.\nYou’ll partner closely with engineering, product, and design to turn complex workflows into intuitive interfaces. This is a hands-on role with ownership from defining the problem and choosing the technical approach through launch and iteration.\nKEY RESPONSIBILITIES\nLead frontend projects from concept to production, owning architecture, implementation, and delivery.\n\nBuild responsive, reliable interfaces using React, TypeScript, JavaScript, HTML, and CSS.\n\nPartner with product and design to simplify complex workflows across agent configuration, dashboards, and analytics.\n\nShape frontend architecture, reusable components, and patterns that help the team ship faster.\n\nImprove application performance, accessibility, and reliability as customer usage grows.\n\nRaise code quality through thoughtful reviews, testing, mentoring, and hands-on technical leadership.\n\nWork with backend engineers to design APIs and data flows that support a smooth user experience.\n\nYOU MIGHT THRIVE IF\nYou have 9+ years of software engineering experience, with deep expertise in frontend development.\n\nYou’ve operated at Staff level or equivalent scope, leading substantial projects and influencing technical direction.\n\nYou have strong experience with React and TypeScript, browser fundamentals, and modern frontend architecture.\n\nYou’ve shipped complex web applications and can explain the technical and product tradeoffs behind your decisions.\n\nYou care about interaction details, usability, accessibility, and performance.\n\nYou’re comfortable taking an ambiguous problem, defining an approach, and driving it through delivery.\n\nYou enjoy writing code, mentoring engineers, and working closely with product and design.\n\nBonus points: Experience building enterprise SaaS, developer tools, real-time interfaces, data visualizations, or AI products.\nWHY THIS ROLE\nReal ownership over core systems.\n\nDirect influence on product and company direction.\n\nA small, high-caliber team with very little process drag.\n\nProblems that matter to customers, revenue, and scale.\n\nIf you want a role where your decisions visibly shape the company, this is it.\nJOB DETAILS\nCash: $225-$350k\n\nEquity: Offers Meaningful Equity\n\nLocation: Redwood City, CA, US (100% Relocation Provided)\n\nUS Visas: Retell AI is open to sponsoring work authorization for qualified candidates, including H-1B, TN, L-1, E-3, F-1 (OPT/CPT).\n\nOTHER BENEFITS\n100% coverage for medical, dental, and vision insurance\n\n$70/day DoorDash credit for unlimited breakfast, lunch, dinner, and snacks\n\n$200/month wellness reimbursement (gym, fitness classes, etc.)\n\n$300/month commuter reimbursement (gas, Caltrain, etc.)\n\n$75/month phone bill reimbursement\n\n$50/month internet reimbursement\n\nCOMPENSATION PHILOSOPHY\nBest Offer Upfront: Choose from three cash-equity balance options; no negotiation needed.\n\nTop 1% Talent: Above-market pay (top 5 percentile) to attract exceptional builders.\n\nHigh Ownership: Small teams, >$1M revenue/employee, and significant equity.\n\nPerformance-Based: Offers tied to interview performance, not experience or past salaries.\n\nINTERVIEW PROCESS\nRecruiter Screen (15min): Speak with a member of the talent team to learn more about us and which team you would be a good fit for.\n\nTechnical Interview (45 min): Practical coding session focused on code fluency and system design (For frontend roles, we will focus on React-specific questions. For backend roles, we take a technology-agnostic approach.)\n\nTechnical Interview (45 min): This is a systems design-focused interview. There will be no coding; we want to assess your skills in systems design.\n\nOnsite/Virtual Interviews (2-3 hrs): Hosted in our office if located in the Bay Area or virtual, with three rounds:\nPractical Coding: Tackle real-world coding tasks with debugging.\n\nSystem Design: Architect a production-ready system.\n\nCodebase Review & Improvements","description_format":"text","description_chars":5692,"description_truncated":false,"requirements":{"experience_years_min":9,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Equity","Internet reimbursement","Vision insurance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":true,"industries":["Conversational AI","Speech & Audio AI","AI Agents","Contact Center Software"],"lifecycle":[{"event":"open","at":"2026-10-27T20:56:00Z"}],"visa":[{"country":"US","licensed_sponsor":true,"evidence":"H-1B filings in 12 months: 12","filings_12m":12,"filings_prev_12m":3,"green_card_filings_12m":0,"median_offered_wage_usd":248750,"route":null,"cap_exempt":false,"checked_at":"2026-10-29T16:27:21+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":10}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":2,"expected_fill_days":42,"reasons":["conf:3","win:early"],"computed_at":"2026-10-30T05:48:23Z"},"pay":{"stated_usd_annual":350000,"is_top_pay":true},"html_url":"https://alion.io/job/retell-ai-staff-frontend-engineer","json_url":"https://alion.io/job/retell-ai-staff-frontend-engineer.json","meta":{"generated_at":"2026-10-30T21:58:13Z","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":12547,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-31T00:00:00Z"}},"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":4592},"rest":"https://alion.io/mcp/rest/get_company?id=4592"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fretell-ai-staff-frontend-engineer"},{"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%2Fretell-ai-staff-frontend-engineer"},{"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%2Fretell-ai-staff-frontend-engineer"},{"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/retell-ai-staff-frontend-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fretell-ai-staff-frontend-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3359853}},{"tool":"search_jobs","arguments":{"company":"retellai.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3359853},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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