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Helium

Founding Full-Stack Engineer

Helium, San Francisco, California, United States, 94199

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What You’ll Do

You will be building an AI paywall editor that serves millions of customers everyday, including touching the front-end Next.js application and back-end high performance Golang server. Writing and deploying scalable Golang code that serves thousands of requests each second globally. Tuning and load testing servers to ensure that global performance is fast as possible for end users. Designing data systems that power experimentation tools for users, and ML training infrastructure. Work cross functionally with the founders, and directly with customers, to design, implement, and deliver the best experiences! Wearing a lot more hats than listed above . What We’re 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 Nice To Haves

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 Reasons This Role Might Not Be A Fit

You’re uncomfortable with ambiguity, or need super structured requirements You prefer to only one part of the stack, and aren’t willing to work across everything You’ve never worked on systems with many moving parts: Our software has many different moving parts that you will be required to ramp up on You’ve never built an end to end feature you’re really proud of Requirements

You have

1-4+ years of engineering experience , with a strong track record of shipping real products. Note This is a

full-time, in-person role

based in

San Francisco

– we work from the office

6 days a week

(Mon-Sat)

You must be

based in the Bay Area

or willing to

relocate before starting .

We require

US work authorization

, but are open to

O-1 visa sponsorship

for truly exceptional candidates.

Our stack:

Next.js (React/Typescript), Zustand AI (vercel) SDK Tailwind/Shadcn Supabase Clickhouse Golang/Fly.io Mobile: Swift, Flutter, Expo, Android

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