Build the platform we want to use.
braincell is day-one early: small enough that everyone who joins now shapes the product, the agent, and the bar for taste. We hire async-first across roles and timezones.
- 4
- Founding roles open
- 100%
- Remote, async-first
- Day one
- Equity for every founding hire
Four principles, lived weekly.
Models do the typing.
Our job is to make the agent right, not to write the code. We optimize for prompt design, eval pipelines, and well-shaped tools.
Async-first, everywhere.
We hire across timezones. Default to writing, default to recording, default to making decisions reversible.
Ship to the customer, not the demo.
Every change rides a live sandbox first. If it can't survive a real machine, it doesn't merge.
Taste is a load-bearing skill.
Designers, engineers, and researchers all touch the visual surface. We hire for taste the way we hire for ability.
Open roles
4 open- ApplyEngineeringFull-time · Remote
Founding Engineer (Full-stack)
Own product surfaces end-to-end: Next.js 16 app router, Drizzle on Postgres, isolated cloud sandboxes, and the agent loop in between.
- ApplyAI ResearchFull-time · Remote
AI Agent Engineer
Tune the prompts, the tool-calls, and the snapshot/rollback contracts that decide how an agent reasons across hundreds of files.
- ApplyDesignFull-time · Berlin
Design Engineer
Take the visual identity from landing standard to product depth. Motion, typography, micro-interactions, brand systems.
- ApplyOperationsContract · Remote
Developer Relations
Ship demos, host streams, run the community Discord, and help founders go from 'I have an idea' to a live URL on stage.
Don't see a fit? Send us something cool you've shipped and we'll keep you in mind for the next round.
Ship first. Apply second.
The best applications come with a link, not a résumé. Try braincell and send us what you build.