Full Stack Developer

Posted 7 Days Ago
Be an Early Applicant
Brains, Loire-Atlantique, Pays de la Loire
Hybrid
Mid level
Blockchain • Software • Financial Services • Cryptocurrency
The Role
Own and maintain the Braiins OS frontend using React, TypeScript and IBM Carbon. Build a modular, AI-assisted dev environment, collaborate across teams, and later expand into Rust backends while mentoring teammates.
Summary Generated by Built In

✨ What awaits you here:

We’re building the firmware powering Bitcoin mining worldwide, and right now we need a dedicated Full Stack developer to take full ownership of the Braiins OS interface. Our team is small, hands-on, and highly technical, focused on developing mining firmware—our most important product. You’ll make it accessible and maintainable while letting the rest of the team implement small UI changes safely themselves.

💪 Your Mission: Frontend First, Rust Later

  • Take ownership of the frontend: build and maintain the Braiins OS UI using React, TypeScript, and the IBM Carbon Design System, ensuring our visual identity remains consistent.

  • Build for the team: Set up a modular, AI-assisted environment that enables other engineers to implement features start-to-finish without deep frontend expertise, under your supervision.

  • Collaborate broadly: Work with other teams on our ecosystem of tools and platforms to ensure a consistent experience.

  • Grow into the backend: Once the frontend is stable, dive into Rust backends. You don’t need Rust experience, but curiosity and willingness to learn are key. Familiarity with similar languages (C/C++, Golang) is a plus.

🛠️ Tech & Tools You’ll Use

  • Frontend: React, TypeScript, IBM Carbon Design System

  • APIs: gRPC-Web, GraphQL

  • Backend: Rust (learning supported)

  • Development: Linux, Git, Nix, AI-assisted tooling

  • Open to other technologies—we value simplicity and practicality over complexity

🔎 We are looking for someone:

  • Passionate about technical challenges and learning new things

  • Enjoy clean, simple solutions over complicated ones

  • Hands-on and collaborative, able to guide others while owning your component

  • Experienced with frontend development; willing to dive into backend Rust over time

🏖 What We Offer

  • Real ownership: You’ll be the main owner of the Braiins OS frontend, with influence over architecture and tooling.

  • Learn Rust: We’ll support you in mastering Rust, a top developer language.

  • Team & Culture: Small, close-knit team in central Prague, flexible hours, good coffee, and honest communication.

  • Stability: 5 weeks vacation, sick days, and long-term projects in Bitcoin mining.

  • Flexibility: Full-time, Employee or Freelance options, indefinite agreement.

🔥 We will love you even more if…

  • Experience with AI-assisted development tools

  • Familiarity with microservices, TCP/UDP, or Linux systems

  • Interest in cryptocurrencies or mining technology

Top Skills

Ai-Assisted Tooling
Git
GraphQL
Grpc-Web
Ibm Carbon Design System
Linux
Nix
React
Rust
Typescript
Am I A Good Fit?
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The Company
Prague, Prague
72 Employees
Year Founded: 2011

What We Do

Bitcoin mining ecosystem.

Mine more bitcoin with Braiins mining tools: mining pool, management system, custom firmware, hardware, education & more

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