{"id":14861,"url":"https://alion.io/job/retell-ai-senior-software-engineer-frontend","title":"Senior Software Engineer, Frontend","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":83,"open_postings":10,"ghost_share":0,"stale_share":0.7,"repost_share":0,"time_to_fill_p50_days":39,"computed_at":"2026-10-26T05:57:25Z"}},"role":"Frontend","role_family":"Frontend","seniority":"senior","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":200000,"max":300000,"currency":"USD","period":"year","gross":null,"usd_annual":300000},"salary_estimate":null,"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"JavaScript","optional":false},{"name":"Node JS","optional":false},{"name":"Python","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":"Voice Agents","optional":false}],"status":"live","first_seen_at":"2025-11-17T17:32:35Z","employer_posted_date":"2025-11-17","last_verified_at":"2026-10-26T22:33:23Z","board_verified":true,"closed_at":null,"days_open":343,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":342},"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 customers like CVS/Aetna, American Airlines, Lenovo, and Grab. We have more customer stories than we can tell!\nAs a Frontend Engineer at Retell AI, you’ll build the user experiences that power our voice automation platform from prompt management and dashboards to analytics and customer-facing tools. You’ll design and ship intuitive, responsive interfaces using React and TypeScript, working closely with backend and DevOps partners to ensure everything is fast, reliable, and scalable.\nYou’ll own frontend projects end to end, collaborate directly with customers to onboard and debug real-world use cases, and turn feedback into meaningful UX improvements. This is a hands-on, high-impact role where you’ll move quickly, take ownership, and help shape a product used in production by teams building with voice AI.\nKEY RESPONSIBILITIES\nDesign and build core UI features like prompt management, dashboards, and analytics tools.\n\nDevelop responsive, intuitive interfaces using React, TypeScript, HTML, CSS, and JavaScript.\n\nCollaborate on backend APIs and DevOps to ensure seamless, scalable systems.\n\nLead frontend projects from concept to launch, owning architecture, coding, and iteration.\n\nWork with customers to onboard, debug, and turn feedback into UX improvements.\n\nYOU MIGHT THRIVE IF\nHave 2+ years of experience building production-grade apps with React and TypeScript.\n\nHold a degree in CS, CE, or equivalent practical experience.\n\nTake ownership like a founder, proactively solving problems with clean design thinking.\n\nThrive in fast-paced environments, quickly learning new tools and frameworks.\n\nCollaborate effectively, balancing clarity and momentum in small, dynamic teams.\n\nJOB DETAILS\nCash: 200k - 300k\n\nEquity: Offers Meaningful Equity\n\nLocation: Redwood City, CA, US\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), and O-1 visas.\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\nIntro Call (15-20min): Connect with our talent team to get a deeper look at the team and the work you'd be doing.\n\nFirst Technical Phone Interview (45 min): Practical coding session focused on code fluency and system design (For frontend roles, we will focus on React-specific questions)\n\nTechnical Phone Interview (45 min): Practical coding session focused on code fluency and focused more heavily on your systems design approach\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\nTools & Automation: Build automations or improve workflows in any basic environment setup like python, java, node.js, etc.","description_format":"text","description_chars":4990,"description_truncated":false,"requirements":{"experience_years_min":2,"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":false,"industries":["Conversational AI","Speech & Audio AI","AI Agents","Contact Center Software"],"lifecycle":[{"event":"open","at":"2025-11-17T17:32:35Z"}],"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":"2026-10-15T11:24:14+00:00","sources":["US Department of Labor: LCA disclosure data (H-1B, H-1B1, E-3)"],"filings_for_role_12m":10}],"liveness":{"score":5,"band":"cold","label":"Long shot","p_open":1,"p_active":0.188,"p_room":0.28,"age_days":342,"expected_fill_days":39,"reasons":["conf:2","stale_co","win:tail","crowd:"],"computed_at":"2026-10-26T05:57:25Z"},"pay":{"stated_usd_annual":300000,"is_top_pay":true},"html_url":"https://alion.io/job/retell-ai-senior-software-engineer-frontend","json_url":"https://alion.io/job/retell-ai-senior-software-engineer-frontend.json","meta":{"generated_at":"2026-10-26T23:26:22Z","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":32001,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-27T00:00:00Z"}},"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-senior-software-engineer-frontend"},{"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-senior-software-engineer-frontend"},{"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-senior-software-engineer-frontend"},{"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-senior-software-engineer-frontend\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fretell-ai-senior-software-engineer-frontend"}]}