Software Engineer

As a Software Engineer at idler, you’ll build the systems and infrastructure that our entire company relies on. You will solve open-ended, technical challenges with focus on performance, scale, and simplicity. In the era of AI-coding, systems-level thinking and attention to detail is more important than experience with a particular framework or language.

Examples of what you'll do

* Design and build scaleable systems that generate RL environments

* Create agentic QA systems to validate environment quality and fairness

* Work directly with AI researchers at leading labs to understand what makes training data effective

* Handle petabyte scale ETL and orchestrate millions of concurrent jobs

* Support new product lines as we expand beyond coding environments

* Manage our security posture and compliance requirements

VisaUS citizen/visa only

Apply to this role

* 1-10 years of experience writing excellent production software (new grads OK)

* Experience with full-stack applications in a popular programming language

* A meticulous problem solver who creates robust systems under time pressure

Tech stack

Typescript, React, NodeJS, Postgres, Redis, Vercel, Cursor/Claude Code/Codex, Tinker, Modal, AWS, Daytona, GRPO

Details

* In-person in San Francisco

* Competitive salary + meaningful equity

* Free meals in office

* Healthcare, 401(k), 15 days of PTO per year

* Relocation assistance

* Small, ambitious team

This is an in-person role in San Francisco. We're a tight-knit founding team and we play to win. Join us if you like to win too.

Apply to this role