About this opportunity
Ersilia lists this Senior Full Stack Engineer opportunity in san francisco, California. Review the employer’s description below for duties, qualifications and application requirements.
Job description
Job Description
Senior Full Stack Engineer
Salary: $160K - $230K
Equity: 0.2-0.6%
On-site work policy: 5 days in-office
Visa Sponsorship Details: Open to visa transfers(e.g. OPT, H1B transfers)
Hiring Count: Looking to hire1 - 2candidates for this role
Location: San Francisco, California, United States
About this role
We are looking for a Senior Full Stack Engineer with 4-8 years of experience to own and build net-new product areas at a high-growth AI startup transforming insurance operations. You'll join a 15-person team (10 in eng/prod) that's grown from $0 to $3M in revenue in just 15 months, building AI agents that handle complex insurance workflows across voice, chat, email, and SMS. This is a high-ownership role where you'll be building from scratch 80% of the time, specifically driving the company's new browser automation and document intelligence platform. You'll report directly to the CEO and work alongside a tight-knit, ambitious team in San Francisco.
Will you be doing?
Own and build conversational, real-time AI agents for insurance operations, end-to-end
Ship net-new features rapidly (first PR to production in week one) across a modern TypeScript/React/Node.js stack
Work cross-functionally with product and forward-deployed engineering teams, and selectively join customer meetings to demo features you've built
Shape technical decisions on architecture, tooling, and infrastructure as an early engineer at a company scaling fast
Help establish engineering best practices and mentor newer engineers as the team grows toward 30 people by year-end
Why candidates should join
We build AI agents that handle complex insurance operations — from claims intake to policy servicing — across voice, chat, email, and SMS for carriers representing $10B+ in annual premiums.
Y Combinator-backed, $0 to $3M revenue in 15 months, team of 15 with plans to hit 30 by year-end. You'd be joining at the perfect inflection point before a Series A raise.
Senior Full Stack Engineer role with $160K–$230K base + 0.2%–0.6% equity. On-site in SF, owning net-new product areas end-to-end.
Role Requirements
Seniority
Requirement: 4 - 8 years of experience in full- stack engineering, shipping customer- facing products end- to- end
Requirement: 4 - 8 years of experience in full- stack engineering, shipping customer- facing products end- to- end
Requirement: Senior Software Engineer or Software Engineer approaching end of mid- career, already performing at a senior level and looking for more end- to- end ownership
Nice to have: Experience deploying LLM- based/agentic solutions in production
Nice to have: Big tech to YC startup (Seed to Series A) pipeline
Education
Requirement: Strong academic performance(GPA 3. 7+ preferred; IIT/JEE ranking is a strong positive signal)
Hard skills
Must have: Proficiency in a modern languagewith willingness to work in TypeScript/React/Node. js
Soft skills
Nice to have: Customer- facing comfort ; willing to demo and join client calls
Miscellaneous
Must have : Must work on- site in San Francisco 5 days/week
Must have: Beenpromoted multiple times at previous company and looking for new challenge
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Worksite address
san francisco, CA, 94199, US
Who can apply
Review the original listing for work authorization, qualifications and employer requirements.