Senior Fullstack Engineer (TypeScript / React)

• We’re looking for a product-minded engineer who can take ownership from problem to production.
• You must understand how to build the right thing, not just how to build the thing right.
• That means understanding our users, challenging assumptions, helping shape solutions, and having the technical ability to make them real.
• You won’t just work through a predefined backlog. We expect you to ask questions like:

Once we understand the problem, we expect engineers to follow it across whatever parts of the system are necessary.

• Realtime by design
• Buttons is not a conventional SaaS application, it's highly reactive and realtime. State moves continuously between browsers, backend services, other users, and connected devices.
• WebSockets and realtime communication are fundamental to the product, so responsiveness, synchronization, consistency, and failure recovery matter throughout the stack.
• Cloud-like architecture, running locally
• Buttons is installed and runs on our customers’ own machines.
• Because we don’t control every environment, the job sometimes extends beyond normal frontend/backend development into Windows, Linux and macOS quirks, networking, processes, filesystems, permissions, upgrades, and packaging.

• Frontend: TypeScript, React, Effect
• Backend: TypeScript, tRPC, Effect, Go
• Data & infrastructure: PostgreSQL, Redis, Kub