Fullstack Engineer
GW104
Posted: 27/10/2025
- $150,000-$210,000
- San Francisco, CA
- Permanent
About the job
Full-Stack Engineer – AI Growth Platform
The Company
We're a YC-backed team of ex-Uber, Amazon, and Apple engineers building autonomous AI that designs, tests, and optimizes subscription paywalls - lifting revenue for mobile apps without hiring a growth team.
What You'll Be Doing
You'll build an AI paywall editor serving millions daily, touching everything from our Next.js frontend to high-performance Python backends handling thousands of requests per second. You'll integrate cutting-edge LLM APIs, ship features end-to-end, work directly with founders and customers, and wear whatever hat the day demands.
What We're Looking For
- 1 - 4+ years shipping real products with strong full-stack chops (React/TypeScript + Python)
- First-principles problem solver comfortable with ambiguity and fast iteration
- User-obsessed: you talk to customers, write your own specs, and own features soup-to-nuts
- Excellent cross-functional communicator who thrives in a tight, founder-level team
- Nice-to-haves: ML/LLM experience, design-tool or mobile background, startup DNA
What's In It For You
- $150–210k base + meaningful equity in a $5M+ funded company
- Work alongside 3 world-class founders who've built for billions of users
- Shape the product from day one - your code will touch millions of users immediately
- Downtown SF office, 6 days/week (Mon–Sat; Saturdays = planning + team breakfast)
- US work authorization required
Apply now for immediate consideration!
Kirstie Moffat
ML Research & Engineering Recruiter