Member of The Technical Staff

We're Hiring : Member of Technical Staff (Core Platform)

Full-time | On-site San Francisco, CA | $180K - $300K + Competitive Equity

What we're looking for :

A full-stack engineer (backend lean) with 2-6 years of experience who has a strong track record of building and shipping high-quality code. You should thrive in early-stage, fast-paced environments and bring deep technical curiosity and a strong work ethic.

What you'll do :

Build distributed systems to run thousands of containers in parallel with fast in-memory snapshots and recovery

Design systems that abstract away environment building complexity

Experiment with AI agents that analyze large production codebases and automatically generate realistic PRs

Build AI copilots to improve workflow efficiency

Create systems around humans that make them more efficient at building environments

Tech stack :

TypeScript, Python, Rust, Distributed Systems, AI Agents, Machine Learning, Reinforcement Learning

About us :

We build training environments that realistically reflect the work of software engineers. We partner with frontier labs and enterprises to build simulations of complex engineering tasks, helping them train and adapt the next generation of coding agents.

Our culture centers around engineering excellence, with emphasis on deep technical ability, curiosity, and dedication.

Perks :

O-1 visa sponsorship available for exceptional candidates

Join a 5-person team founded in 2025 with $10M in funding

Interested? Let's talk!

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