About Retell
Retell is building the new standard for automating call center communications, including sales, support, customer engagement, and retention calls.
Backed by Altman Capital, Y Combinator, and top investors, we've raised a $4.7M seed round and hit $10M ARR in 15 months.
Check us out on the Top Lean AI Native Companies Leaderboard at leanaileaderboard.com .
Why This Company
Twenty years ago, every business found itself needing a website, the new gateway to the world. Platforms like WordPress and Squarespace rose to become the standard for getting businesses online.
Today, we’re at the start of a new shift. Every business that relies on phone interactions can now have an AI voice agent of their dreams. A tireless and empathetic receptionist, salesperson, debt collector, or appointment reminder that works 24/7. Operational bottlenecks vanish overnight. Doubling your business no longer means doubling your team. Customer experience no longer suffers. (Ever tried calling an East Coast bank after 3 p.m. PT?) But companies aren't ready. Platforms don't exist.
At Retell, we're building the new standard for building AI voice agents. A seamless UI, a comprehensive toolkit, effortless integrations, and a thriving builder community, we're creating everything businesses need to deliver exceptional phone interactions on every single call.
This shift is happening, so why not be part of the team that defines it?
Video Walk Through About The Product
Why This Role
This is a high-impact role for engineers who want to move fast, take ownership, and help build a category-defining product from the earliest days. As a Founding Senior Software Engineer, you won’t just be shipping features—you’ll shape the core systems and experiences that power millions of automated conversations.
You’ll work across the stack, solving tough technical challenges in real-time audio, global telephony, and developer tooling. You’ll collaborate closely with the founding team, talk to customers, and ship improvements weekly—sometimes daily.
If you’re excited by big problems, fast feedback loops, and the opportunity to help define how businesses use voice AI at scale—this is the role for you.
Position : Founding Senior Software Engineer
Job type: Full-time 70hr/week (50 hr/week onsite with flexible hours + 20 hr/week work from home)
Salary: $200K - $310K
Equity: 0.25% - 0.85%
Bonus: $20k - $100k
Location: San Carlos, CA, US
US visas: Sponsors Visa & Greencard
Benefits: 100% medical, dental, vision insurance coverage. Unlimited breakfast, lunch, dinner, and snacks. Gym, daily commute fee reimbursement. Internet, phone bill covered.
Who You Are
What You’ll Do
Our Compensation Philosophy
Our Strongest Offer, Upfront
Designed for Talent Density
Scale Through Code, Not Headcount
Performance > Background
Experience Doesn’t Dictate Pay
Interview Process
Online Assessment – We’ll kick things off with a short HackerRank assessment—two coding questions, 25–30 minutes total. You’ll have 7 days to complete and submit it.
Phone Interview 1 – A 30-minute live coding session focused on data structures and algorithms. We'll share a CoderPad link, and you’re free to use your preferred language.
Phone Interview 2 – A 30–45 minute technical interview, again using CoderPad, to dive deeper into your algorithmic thinking and coding fluency.
Onsite Interviews – These take 1–4 hours and are conducted in person in the San Francisco Bay Area. Please bring a computer for any hands-on portions. For remote candidates, we’re happy to arrange virtual sessions. There are up to four rounds:
...to open the door for someone new. If you have at least six months of experience working in a salon environmentwhether assisting stylists, handling shampoos, or supporting daily salon operationsand youre ready to take your career to the next level, this could be the...
Founded in 1979, BAR Constructors Inc. is located in Lancaster, TX and focuses on heavy construction in water/sewer/utility construction. We are a $70M company that operates 8-10 job sites at any particular time. We perform earthwork, concrete structures, yard piping...
...This is an exciting new opportunity with a global investment firm looking to build a sophisticated FP&A function. High growth opportunity. Please reach out directly for additional details. Compensation: 130k - 160k base plus bonus ****Ideal candidates will have...
...Job Title: Controls Engineer Department: Engineering / Automation Reports To: Engineering Manager / Controls Engineering Lead Job Type: Full-Time Job Summary: We are seeking a skilled and motivated Controls Engineer with strong experience in Rockwell...
...Personnel is seeking an Industrial Maintenance Mechanic in the New Orleans, LA area. Are you... ..., repairs, replaces worn parts, motors, control devices, etc. Operates machine... ...when necessary. Troubleshoot and repair electrical circuits, PLCs, wiring, controls, HVAC,...