What we build

Twin builds autonomous AI agents that run entire parts of a business. Not workflow automations, agents that learn, adapt, recover from errors, and make decisions. Built in Rust.

What we're looking for

We're hiring a founding engineer with entrepreneurial experience. You've built and shipped a product of your own as a founder, co-founder, or solo technical lead of an early-stage venture. You carried it: architecture decisions, production debugging, shipping under pressure, wearing every hat. Whether it was acquired, wound down, or is behind you for other reasons, you came out of it with deep judgment and the drive to build again.

What matters to us

• Strong systems programming skills  in Rust, Go, or C++, used regularly in your current or recent work
• Production experience   you've built and operated systems used by real people, not just prototypes or demos
• Active builder   you're currently shipping work we can look at (open-source contributions, personal projects, public repos)
• End-to-end ownership mindset   you think about product outcomes and business impact, not just code
• Comfort with ambiguity   you've made architectural decisions without a spec and lived with the consequences

Domains we care about

AI agents, browser automation, LLM infrastructure, distributed systems, developer tooling. If you're building in one of these, we're especially interested.

What the role looks like

You own systems end-to-end architecture, implementation, production, and consequences. Small team, high intensity, minimal process. You define the approach rather than waiting for direction. Remote-friendly

How we evaluate

No algorithmic puzzles. We assess four things:

1. Systems-level depth  — real concurrency, async, memory and performance awareness
2. Shipped work  — production systems used by real people
3. Autonomy under ambiguity  — evidence of independent architectural judgment
4. Product ownership  — you care about what the system does for users, not just how it's built