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Helium (YC S24) · 1 day ago

Founding Sr Full-Stack Engineer

San Francisco, CA

Full-time

Onsite

Senior Level

$150K/yr - $250K/yr

Helium is a fast-growing company focused on building Self-Improving Software leveraging AI to enhance software experiences and revenue. They are seeking a Founding Sr Full-Stack Engineer to manage their AI Experience Generation product, which serves millions of users daily, and to collaborate with founders and customers to deliver optimal software solutions.

B2BDeveloper ToolsMachine Learning

Responsibilities

You’ll own big chunks of our AI Experience Generation product serving millions of users per day, including…

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

Qualification

GolangNext.jsFull-stack developmentReactMachine LearningUser-facing product experienceScalable backend systemsProject managementCross-functional communicationMentoring engineers

Required

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

Preferred

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

Company

Helium (YC S24)

Helium automatically generates and tests new paywalls to improve your app's conversion. Backed by Y Combinator, Google & leaders from OpenAI and Uber.

Founded in 2024