[Hiring] Fullstack Engineer / AI Engineer @Braiins

Role Description

We are looking for a fullstack engineer who is equally comfortable shipping a feature end to end and building the AI tooling the rest of the team develops with. Not a prompt specialist bolted onto a product team — an engineer who happens to be very good at getting real work out of models.

• You'll own features across the full lifecycle: architecture and design, implementation on both sides of the wire, then troubleshooting it in production when a customer with thousands of miners hits an edge you didn't predict.
• The platform includes:
  • A NestJS/TypeScript API on PostgreSQL
  • Redis, queue-driven background work (BullMQ, Kafka)
  • gRPC where devices talk to us
  • An Angular dashboard
  • A React desktop frontend
  • A Rust daemon in between
  • All runs containerised on our own Kubernetes
• The AI half involves:
  • An internal agent platform with a shared library of agent skills and MCP servers wired into our repos
  • An orchestration pipeline that carries a product idea through discovery, design, stories, and implementation with a human approval gate at each stage
  • Real infrastructure with real users — our own team — treated like production: evaluated, versioned, observable, and honest about limitations
  • Work on agent and tool design, MCP integrations, context engineering, retrieval over domain data, and evaluations to prevent silent degradation
• Join an international, multidisciplinary, fully remote team with a flat structure and short paths to decision-making.

Qualifications

• Strong TypeScript, both ends.
• Node.js on the server (NestJS or equivalent) and a modern SPA framework (Angular, React, Vue).
• SQL that goes past the ORM.
• Hands-on experience shipping with LLMs.
• Git, Docker, CI.
• Comfort with asynchronous, distributed systems.
• REST and gRPC; a working understanding of what's underneath them.
• Tests you'd defend in review — unit and integration, and the judgement to pick.
• Debugging as a core skill.
• Solid grasp of algorithms and data structures.
• English at a communicative level, and the self-direction a remote team needs.

Requirements

• Rust (not a requirement, but a welcome bonus).
• Python — our agent orchestration tooling lives there.
• Frontend craft: design systems, accessibility, bundle and rendering performance.
• An interest in Bitcoin or active experience with cryptocurrencies.

Benefits

• Full-time position with flexible working hours, employee or freelance.
• Indefinite contract.
• For employees: 5 weeks of vacation and 3 sick days.
• Fully remote, with modern offices in the centre of Prague if desired — relaxation room, shower, parking.
• Company events and the occasional Braiins brunch.
• A generous budget for AI tooling, and the freedom to use it properly.
• Long-term work on products used daily by industrial-scale mining operations.