Principal/Staff Software Engineer

C&D Talent Advisory WARSAW 2026-08-26

Hiring via TechTree 

This is a role that TechTree is recruiting for on behalf of one of its clients.

TechTree is an AI-driven recruitment platform working with high-growth companies.

When you apply, TechTree's AI Agent matches you not just to this role, but to other relevant opportunities across its network, so one application can unlock multiple roles.

  • Location: Europe / EMEA
  • Work model: Fully remote
  • Employment: Full-time
  • Level: Principal / Staff
  • Estimated compensation: €100,000–€200,000
  • Industry: Healthcare AI

The opportunity

  • Build complex, production-grade AI agent systems from 0 to 1
  • Architect distributed systems for enterprise healthcare environments
  • Work across LLMs, agent orchestration, tool calling, multi-turn routing, and MCP integrations
  • Own system architecture, scalability, and reliability
  • Stay deeply hands-on while providing technical guidance to other engineers

What we're looking for

  • 7+ years building complex production systems
  • Recent hands-on experience as a Staff, Principal, Senior ML/AI, or Senior Software Engineer
  • Proven from 0 to 1 startup engineering experience
  • Strong Python and ML/AI engineering background
  • Shipped experience with AI agents, tool calling, agent harnesses, or multi-turn systems
  • Strong systems thinking and distributed-systems experience
  • High agency and comfort operating in ambiguous early-stage environments
  • Based in Europe / EMEA

Strong advantages

  • Healthcare or clinical systems experience
  • HIPAA, audit trails, or regulated-data environments
  • Deep Data Science / Machine Learning background
  • Advanced agent infrastructure, MCP, routing, and prompt-management experience
  • Previous experience at high-growth AI-native startups
  • Strong Math, Physics, Computer Science, ML, or related academic background

If this sounds like a fit, we'd love to hear from you. Apply today!