Helium (Automate paywall testing)
Founding Full-Stack Engineer
Helium (Automate paywall testing), San Francisco, California, United States, 94199
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
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
#J-18808-Ljbffr
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
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
#J-18808-Ljbffr