Senior Backend Product Engineer (AI Research Workspace)

An AI startup is creating a new kind of workspace in which knowledge workers use language models to carry out research at huge scale, through a simple interface. Behind it sits purpose-built infrastructure that runs very large numbers of agents in parallel, and the company needs a senior engineer to help solve the unusual problems that come with that.

What you’ll tackle

• Prevent race conditions when an enormous number of agents write to the same data model at once
• Stream agent outputs in real time from every backend service to the client
• Balance each agent’s write speed against how much memory it consumes
• Own whole projects as the primary contributor, from design through production deployment
• Design and run distributed services in production
• Explain complex ideas clearly and keep everyone aligned, even in difficult conversations

Profile

• Five to ten years as a software engineer with a consistent record as lead individual contributor on medium and large projects
• Production experience shipping and owning backend or distributed-systems code, in Go, C++ or similar; backend-leaning generalists are welcome
• Evidence of real technical depth, such as custom indexing, concurrency or low-level systems work
• Colleagues treat you as the person who helps debug problems and answers questions
• Familiarity with Go, Redis, pub/sub, RPC, Postgres, S3 or Temporal is a plus
• We value demonstrated skill over title or ladder-climbing

On-site in New York, NY. Visa transfers and new sponsorships are both considered.