Principal Full-Stack Engineer | AI Start-Up | Remote, with occasional onsite (Germany)

I am partnered with an AI startup, backed by a significant round of funding looking for a principal-level software engineer who wants to apply big-system thinking to a smaller, faster environment.

You’ll be building production software that sits directly on top of large-scale generative models. That means turning research outputs into stable interfaces, reliable workflows, and product surfaces that hold up under real usage.

What you’ll do
  • Design and own full stack systems
  • Build frontend applications
  • Own backend APIs, data models, auth boundaries, and async processing
  • Design event-driven pipelines for large media ingestion, background processing, retries, and failure recovery
  • Work directly with research to define clean contracts between model outputs and product interfaces
  • Raise engineering standards through architecture, reviews, and example implementations

How the stack looks in practice
  • TypeScript end to end
  • React with Tailwind and Radix-based component patterns
  • Convex-style backend architecture with strongly typed queries, mutations, actions, and realtime state
  • Async-first design with explicit failure handling and observability
  • AWS used narrowly and intentionally for Lambda, S3, and event triggers

About you
  • You operate at senior, staff, or principal level in a high-bar engineering environment
  • You are comfortable owning ambiguous problems without layers of review or process
  • You think about systems, invariants, and failure modes as much as code
  • You can move fast without compromising quality of work
  • You want your decisions to matter

Nice to have
  • Experience productising ML or LLM-backed systems
  • Python for tooling or model-adjacent work
  • Experience with serverless or backend-as-a-service architectures

Benefits of the role
  • Ownership of complete systems
  • Direct influence over technical/product decisions
  • Clear line of sight from code to real users and outcomes
  • Close collaboration with research and product
  • High trust environment with strong technical autonomy
  • Competitive compensation with meaningful equity upside
  • Regular in-person time with a small senior team, without giving up remote flexibility
  • Access to whatever tools or benefits you need to help you excel

If you’re looking for a technically demanding role with real impact and very little overhead, apply now