Member of Technical Staff Engineering & Research

**Why you should join us** * We’re building a **research lab with a real-time feedback loop.** * We’re building **AI systems that expand how quickly a small research team can understand, build, and experiment.** * Our edge is the **speed at which we can form ideas, build systems, run experiments, and learn from reality.** * You’ll work directly with the founders and have **real ownership over what we build and how we build it.** * We’re a small team with over a decade of experience at places like **Optiver, DRW, and Argo AI.** **What you’ll do** * Build **LLM-powered systems and agent harnesses** that help us research, engineer, and operate faster. * Design the infrastructure around them: **tools, context, memory, evals, orchestration, observability, and execution environments.** * Find new ways to turn frontier models into **reliable systems that do useful work.** * Work across the stack when needed. At our size, **the problem matters more than the job boundary.** * Own projects end-to-end: identify opportunities, prototype quickly, ship, measure what works, and iterate. **What we’re looking for** * You have **unusually high initiative**: you notice important problems, figure out what should exist, and make it happen without waiting to be told. * You’re **technically sharp and learn extremely quickly.** * You’ve built seriously with **LLMs, agents, harnesses, or adjacent AI infrastructure.** * You move quickly, reason from first principles, and enjoy problems where **the right architecture has not been figured out yet.** * You care more about **what works in practice** than following established patterns. * Curiosity, intensity, and technical judgment matter much more to us than credentials or years of experience. ### Your first 30 days * **First week:** learn how we work, find something important that could be dramatically better, and start making it better. * **By 15 days:** take ownership of a meaningful technical problem end-to-end, including deciding what to build and how to measure whether it works. * **By 30 days:** we want you independently identifying what matters and driving projects that materially increase what the team can do. You’ll have the autonomy and resources to do some of the **best work of your life.** Website: [**https://attimet.com**](https://attimet.com) Jobs: [**https://www.ycombinator.com/companies/attimet/jobs**](https://www.ycombinator.com/companies/attimet/jobs) This is an on-site role based in San Francisco, CA.