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SOFTWARE

Founding Sr Full-Stack Engineer

Helium

Senior · 5+ yrsOn-site · SFListed 2mo ago
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Backed by

Y Combinator

HQ

🇺🇸 San Francisco

Open roles

13

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Experience Senior · 6+ yrs (5+ years)

About the role

structured by ORI

HeliumSelf Improving SoftwareFounding Sr Full-Stack Engineer$150K - $250K•0.50% - 1.50%•San Francisco, CA, USJob typeFull-timeRoleEngineering, Full stackExperience3+ yearsVisaUS citizen/visa onlyConnect directly with founders of the best YC-funded startups.Apply to role ›Zach WitzelCEOZach WitzelCEOAbout the…

What you will do

  • 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!
  • Wearing a lot more hats than listed above 👷.

What they are looking for

  • Keen problem solving skills: you are able to cut down ambiguous problems down to first principles and deliver a working solution.
  • Strong programming/full-stack foundation: You’re comfortable working on both backend code as well as frontend React code.
  • Experience working directly on user-facing products: you are able to figure out and understand what the user needs, including talking to customers
  • Stellar cross-functional communication skills: you are able to adapt to our ways of working and be an efficient/effective communicator.
  • Owning features end to end: you’ll write your own PRDs/quick specs when necessary, and you test your features end to end to make sure they work and satisfy the requirements
  • Experience scoping, designing, and running complex multi-engineer projects
  • Experience managing or mentoring engineers before
  • Requires Bachelors degree or higher in Computer Science or similar fields.

Nice to have

  • Experience with ML/AI/LLM integration in applications
  • Experience building scalable backend systems with very demanding SLAs
  • Background working with design tools, chat experiences, or vibe coding tools
  • Previous experience founding or working at a high-growth startup

Benefits

  • Build on the newest AI models, even before they're released publicly
  • Work with a stellar hard-working team at a prime office in SF
  • All meals (Breakfast, lunch, dinner) while working and gym/transport covered.
Next.jsReactTypescriptZustandGolangSwiftFlutterAndroidTailwindShadcnSupabaseClickhouseFly.ioCursor
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Lead architecture and mentor a world-class engineering team.

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Helium

B2B

Self Improving Software

Backed by Y Combinator

Company pageWebsite

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