About idler
idler is a frontier data research lab. We build the evals and environments that the world's leading frontier labs use to measure and train their models.
We closed on a multimillion-dollar contract with a top lab and raised a $9m seed round led by Paradigm. We are now facing more lab demand for our data than we can currently serve.
Teaching AI superhuman capabilities is a responsibility we take very seriously. Our training data comes from work that is rigorous, ethically produced, and grounded in real expertise.
About the role
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
What we’re looking for
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
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.
Visa: US citizen/visa only.