Senior Full-Stack Engineer

Overview

Brainy is an AI platform rethinking professional knowledge work. We build intelligent assistants for lawyers, doctors, and other experts, automating complex workflows through powerful AI orchestration. Our platform connects multiple large language models (OpenAI,Anthropic,Gemini, etc.) with a clean, scalable NestJS + React architecture. We’re a small, highly technical Austrian team, driven by clarity, quality, and good coding vibes. If you love building with modern tools like Claude Code, Cursor, or Codex, and want to explore the next era of “AI-assisted development,” you’ll feel right at home here.

Frontend & AI Tools

• Frontend: React + Vite, TypeScript, Tailwind, Shadcn UI
• AI & Dev Tools: Cursor, OpenAI Codex, Claude Code

Your Responsibilities

• Design and implement new features in our NestJS backend and React frontend
• Build and maintain scalable GraphQL APIs and modern React frontends
• Integrate and extend AI features across our platform
• Help shape our internal Developer Experience and tooling ecosystem
• (Optional) Contribute to DevOps topics like Docker, Monitoring, CI/CD

Your Profile

• Deep expertise in NestJS, React, GraphQL, and PostgreSQL
• Passion for AI-assisted coding and modern developer tools
• Clean code mindset and architectural thinking
• Proactive, independent, and open to new tech vibes

What We Offer

• Flexible hours and no pointless meetings
• Real impact on architecture and product decisions
• Small team, strong tech focus, AI ambition
• Free nationwide public transport (Klimaticket Austria)

Job Details

• Seniority level: Mid-Senior level
• Employment type: Full-time
• Job function: Engineering and Information Technology
• Industries: Software Development

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