Feeny
Brainbase Labs

Member of Technical Staff, Infrastructure at Brainbase Labs (San Francisco, CA)

Brainbase Labs· San Francisco, CA·

Role details

Work type
Onsite
Employment
Full-Time

Job description

About Brainbase

Brainbase is building the primitives for the next 1B agents. We power internal agents across government, Fortune 500, frontier labs and hyper-growth startups. Teams use our configurable primitives such as evals, observability, router, authentication, permissions, sandboxes, harnesses and more to deploy internal agents at scale securely. We support 8+ harness and 50+ models, including sovereign deployments.

Launches Take a look at some of our previous launches to get an idea of what we’re working on:

About the role

Brainbase’s infrastructure consists of a lot of different services for our primitives. These services need to be containerized to run on different environments including our managed cloud, AWS/Azure/GCP and sovereign on-premise deployments, with low latency and high reliability. Some of these services look like Docker containers (e.g. authentication service) while some of them are more complex to control and scale (e.g. sandboxes). You would primarily be contributing to building and improving these infrastructural components.

Why work at Brainbase Labs

  • Culture: Early-stage startup (6–7 people) with founding team backgrounds from Harvard, Verkada, Boeing, Anthropic. Flat structure, high ownership.
  • Work policy: In-office at San Francisco HQ (full-time onsite) builtin.com
  • Notable perks/engineering culture: Build the core platform from scratch (agent APIs, observability, scaling). Open roles: Founding Engineer, Founding GTM, Founding Marketer. Salary ranges $125K–$250K for engineering; $100K–$160K for GTM roles. Equity likely included.
  • Growth opportunity: Join at the ground floor of a Y Combinator-backed company in the fast-moving AI agent space. Direct impact on product, architecture, and company direction.

Application questions