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Founding Full-Stack Engineer

Helium· Engineering
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Hybrid (San Francisco)$125k - $200k + equityFull-timePosted 9mo ago

About the role

Helium is building Self-Improving Software with AI-driven experiences. This role involves owning major parts of the AI Experience Generation product, front-end and back-end work, and close collaboration with founders and customers.

Responsibilities

  • Adding new features to the front-end Next.js application and deploying scalable Golang code that serves thousands of requests each second globally.
  • Tune/Optimize/Load test our servers as we 10x our growth from tens of millions to hundreds of millions of users per day.
  • Designing data systems and ML training infrastructure that power automated experimentation at scale.
  • Work directly with founders and customers to design, implement, and deliver the best experiences.

Qualifications

  • Bachelor’s degree or higher in Computer Science or similar fields (implied by education note).
  • Experience and skills in full-stack development and problem solving.
  • Experience working directly on user-facing products and talking to customers.
  • Strong communication and end-to-end feature ownership abilities.

Skills

Required:Frontend development (React/Next.js)Backend development (Go)Full-stack developmentUser-facing product experience

Benefits

  • All meals (Breakfast, lunch, dinner) while working and gym/transport covered.
Last updated Oct 14, 2026. Interested? Apply on the company site.
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About Helium

Self Improving Software

Helium is building self-improving software — AI that continuously experiments on key moments in the user funnel to boost revenue. Our first customer, a social app with 20M MAU, uses Helium to test new in-app paywalls to get more users to subscribe. Zach previously made $100M+ in growth experiments at Uber, Shishir led the first LLM features for Alexa, and Anish worked at Meta building ML to automatically experiment on ads, increasing Instagram ads conversion by 10%.

Company profileWebsite

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