Senior Frontend Engineer

Company: Retell AI
Location: Redwood City CA (on-site Monday-Friday plus one remote day)
Compensation: $200000 - $300000 competitive equity
Employment Type: Full-time
Visa Sponsorship: Visa transfers and new sponsorship (H-1B TN E-3 O-1 OPT); relocation support

Retell AI is reimagining the call center with voice AI. Thousands of companies use its AI voice agents for sales support and logistics calls that once required large teams and it is building toward contact centers powered entirely by intelligent AI workers.

Backed by Y Combinator and Alt Capital Retell AI grew from $5M to about $80M ARR with a team of roughly 40 people and was named a top 50 AI app by a16z.

Retell AI is hiring Senior Frontend Engineers (3-7 years) to build the user experiences that power its voice automation platform from dashboards and analytics to customer-facing tools. You will join a small high-ownership frontend team reporting directly to the CTO owning projects end to end and shipping features thousands of companies use in production. The team works a high-intensity startup schedule.

• Build and ship React-heavy features end to end (prompt management dashboards analytics).
• Write production-grade React and TypeScript including deep state management and UI performance for data-rich dashboards.
• Collaborate with backend and full-stack engineers on a team of about seven frontend-focused developers.
• Work directly with customers to onboard debug and turn feedback into UX improvements.
• Own frontend architecture decisions and iterate rapidly.

• 3-7 years of frontend engineering focused on React active in your current or most recent role
• Expert-level React you can write without AI assistance plus production TypeScript and
• 1.5 years at a VC-backed startup and at least one role at a well-known tech company or high-growth YC startup
• B.S. in computer science computer engineering or electrical engineering from a top university
• A truly frontend focus (not primarily full stack)
• Ability to work on-site in Redwood City Monday-Friday plus one remote day

• Strong YC startup or top-company experience can offset the school requirement

100% medical dental and vision coverage; $70/day meal credit; $200/month wellness reimbursement.

Application review online assessment (CodeSignal) intro call (20 min) two technical phone interviews (45 min each) onsite or virtual interviews (2-3 hours).

React TypeScript JavaScript HTML CSS

REVENUE: 20% of first-year salary. Est. fee per hire $40K-$60K; 6 seat(s) up to $300K if all filled.

TARGET COMPANIES (client (top tech/YC named; NO banks fintech insurance travel except PayPal/Coinbase)): Meta Google PayPal Coinbase Vercel Linear YC startups.

BEST-FIT CANDIDATE: 3-7 yrs; expert React/TS without AI; 1.5 yrs VC-backed startup; top CS/CE/EE degree; visa: transfers new (H-1B TN E-3 O-1 OPT); location: Redwood City 6-day schedule (5 on-site 1 remote). Client: do NOT submit from banks/fintech/financial services/insurance/travel (except PayPal Coinbase). Must accept the intense schedule.