---
title: 'Senior Software Engineer, Frontend at Retell AI'
canonical: 'https://feeny.ai/job/senior-software-engineer-frontend-retell-ai-san-francisco-m5vxxsnd1a1r'
type: 'job'
last_seen: '2026-10-15'
---

# Senior Software Engineer, Frontend at Retell AI

- **Company:** Retell AI
- **Location:** San Francisco, CA
- **Compensation:** $200k–$300k
- **Employment:** full-time
- **Work type:** onsite
- **Posted:** 2025-11-17
- **Last confirmed live:** 2026-10-15
- **Apply:** https://jobs.ashbyhq.com/retell-ai/26e3aa9d-f22d-4870-8db5-bb488c207559/application

**Skills:** React, TypeScript, HTML, CSS, JavaScript, Frontend Development

> Build user experiences for Retell AI's voice automation platform using React and TypeScript. Design and ship intuitive, responsive interfaces for prompt management, dashboards, and analytics while collaborating with backend and DevOps partners to ensure scalability and reliability.

## Job description

## ABOUT RETELL AI

Retell 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. Our 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. We'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. Let's build the future together. Recent recognition:

- [No. 1 Best Places to Work in the Bay Area, San Francisco Business Times 2026](https://finance.yahoo.com/technology/ai/articles/voice-ai-startup-retell-ai-145200025.html)
- https://a16z.com/the-ai-application-spending-report-where-startup-dollars-really-go/
- [#3 Fastest-Growing Software Company, G2 Best Software Awards 2026](https://company.g2.com/news/g2s-2026-best-software-awards)
- [Best Agentic AI Software, G2 Best Software Awards 2026](https://www.retellai.com/blog/retell-ai-recognized-as-the-best-agentic-ai-software-by-g2)
- [#4 Fastest-Growing Software Vendor, Brex Benchmark 2025](https://www.brex.com/journal/brex-benchmark-december-2025)
- [Enterprise Tech 30 Class of 2026, Nasdaq & Wing VC](https://www.nasdaq.com/videos/retell-ai)
- [Top-Ranked Startup, Lean AI Leaderboard](https://leanaileaderboard.com/)
- [Backed by Y Combinator](https://www.ycombinator.com/companies/retell-ai)

## ABOUT THE ROLE

Retell 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! As 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. You’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.

## KEY RESPONSIBILITIES

- Design and build core UI features like prompt management, dashboards, and analytics tools.
- Develop responsive, intuitive interfaces using React, TypeScript, HTML, CSS, and JavaScript.
- Collaborate on backend APIs and DevOps to ensure seamless, scalable systems.
- Lead frontend projects from concept to launch, owning architecture, coding, and iteration.
- Work with customers to onboard, debug, and turn feedback into UX improvements.

## YOU MIGHT THRIVE IF

- Have 2+ years of experience building production-grade apps with React and TypeScript.
- Hold a degree in CS, CE, or equivalent practical experience.
- Take ownership like a founder, proactively solving problems with clean design thinking.
- Thrive in fast-paced environments, quickly learning new tools and frameworks.
- Collaborate effectively, balancing clarity and momentum in small, dynamic teams.

## JOB DETAILS

- Cash: 200k - 300k
- Equity: Offers Meaningful Equity
- Location: Redwood City, CA, US
- US 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.

## OTHER BENEFITS

- 100% coverage for medical, dental, and vision insurance
- $70/day DoorDash credit for unlimited breakfast, lunch, dinner, and snacks
- $200/month wellness reimbursement (gym, fitness classes, etc.)
- $300/month commuter reimbursement (gas, Caltrain, etc.)
- $75/month phone bill reimbursement
- $50/month internet reimbursement

## COMPENSATION PHILOSOPHY

- Best Offer Upfront: Choose from three cash-equity balance options; no negotiation needed.
- Top 1% Talent: Above-market pay (top 5 percentile) to attract exceptional builders.
- High Ownership: Small teams, >$1M revenue/employee, and significant equity.
- Performance-Based: Offers tied to interview performance, not experience or past salaries.

## INTERVIEW PROCESS

- Intro Call (15-20min): Connect with our talent team to get a deeper look at the team and the work you'd be doing.
- First 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)
- Technical Phone Interview (45 min): Practical coding session focused on code fluency and focused more heavily on your systems design approach
- Onsite/Virtual Interviews (2–3 hrs): Hosted in our office if located in the Bay Area or virtual, with three rounds:
- Practical Coding: Tackle real-world coding tasks with debugging.
- System Design: Architect a production-ready system.
- Tools & Automation: Build automations or improve workflows in any basic environment setup like python, java, node.js, etc.

## #LI-JC1

## About Retell AI

## Company Overview
- **One-liner**: Retell AI is a real-time conversational AI platform that builds human-like, low-latency voice agents to automate phone calls for businesses.
- **Entity Type**: Private (Seed stage, Y Combinator-backed)
- **Headquarters**: San Carlos, California, United States
- **Founded**: 2023
- **Founders**: Bing Wu (CEO), Todd Li (COO), Evie Wang (CTO), Weijia Yu (President), Zexia Zhang (CMO)

## Core Business
- **Primary industries**: Contact Center Automation, AI Voice Agents, Conversational AI, Enterprise Communication Software
- **Target customers**: B2B (enterprise, healthcare, insurance, automotive, SMBs)
- **Mission**: "A world where every business call is handled by AI that actually gets it right."

## Products & Services
- **AI Voice Agent Platform (SaaS)**: Drag-and-drop agentic framework to build, deploy, and manage AI voice agents for inbound (support, routing, appointment booking) and outbound (reminders, lead qualification, surveys) calls. Includes:
  - Real-time function calling (book, pay, update records, transfer)
  - Proprietary turn-taking model and ultra-realistic voices
  - Streaming RAG with auto-sync knowledge base
  - Performance analytics dashboard
  - Batch calling with conversion tracking
  - SIP trunking (connect to any telephony)
  - Enterprise on-prem deployment option
  - Compliance: HIPAA, SOC 2 Type II, GDPR; SSO; PII redaction; role-based access

## Market Standing
- **Valuation**: Not publicly available
- **Key Metric**: $40M annualized revenue (fully profitable as of 2025)
- **Total Funding**: $9.4M (including $4.6M seed round led by Alt Capital, backed by Y Combinator and angel investors)
- **Headcount**: ~69 employees (175% YoY growth)
- **Notable Investors/Partners**: Alt Capital (lead seed), Y Combinator

## Competitive Advantages
- **Proprietary Voice AI Orchestration**: Built from the ground up for sub-second latency (~600ms) and natural turn-taking, not stitched-off APIs.
- **Scalability**: Battle-tested infrastructure handling millions of calls reliably.
- **Enterprise Security**: HIPAA/SOC2/GDPR certified, on-prem deployment, SSO, redaction.
- **High Capital Efficiency**: $40M ARR with only 25 employees at time of reaching that milestone.

## Strategic Focus
- Replace traditional call centers by shifting from human-staffed support to AI-handled routine calls, with human escalation for complex cases.
- Continue improving low-latency, agentic voice models and expanding enterprise feature set (batch calling, analytics, compliance).
- Scale customer base across healthcare, insurance, and other regulated verticals.

## Why Work Here
- **Culture**: Small, high-ownership teams; >$1M revenue per employee; "ship fast" — no committees, ship this week if you can make the case.
- **Work Environment**: In-office in San Carlos (on purpose — speed and collaboration on hard problems).
- **Benefits**: Competitive equity packages, health/dental/vision insurance, meal stipends, relocation support, visa sponsorship (H-1B and other work visas).
- **Tech Stack**: Backend in TypeScript and Python, ML in Python, Frontend in React.
- **Interview Process**: Conversations with co-founders, deep on product thinking and technical ability, transparent and fast.

## Sources
1. [retellai.com](https://www.retellai.com/)
2. [retellai.com/about-us](https://www.retellai.com/about-us)
3. [retellai.com/careers](https://www.retellai.com/careers)
4. [linkedin.com/company/retellai](https://www.linkedin.com/company/retellai)
5. [cbinsights.com/company/retell-ai](https://www.cbinsights.com/company/retell-ai)

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