Founding MTS - Product Engineering

We're assisting a well‑funded startup with their search for a Member of Technical Staff - Product Engineering. Their product is an open‑source platform that creates a feedback loop for optimizing LLM applications — turning production data into smarter, faster, and cheaper models. This role will work onsite in their NY office.

The vast majority of your work will be open source. You’ll have an opportunity to continue to master your current skills with the flexibility to learn new ones from scratch.

If you joined today, you'd take on the fullstack work that goes into the highest-impact user‑facing features.

• Strong technical background — You’ve tackled hard technical problems. You’re comfortable driving large projects from inception to deployment (to start, the observability dashboard).
• Passionate about your craft & design — You're excited about the idea of re‑thinking developer tooling from first principles to build interfaces and workflows that don't just work but also delight.
• Hungry for personal growth — There are no speed limits. You’re excited about learning and contributing across the stack.
• In‑person in NYC — They work in‑person five days a week in NYC. They work hard and obsess about the craft – but maintain and encourage a healthy lifestyle with a long‑term mindset.