Principal/Staff Software Engineer

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 / EMEAWork model: Fully remoteEmployment: Full-timeLevel: Principal / StaffEstimated compensation: €100,000–€200,000Industry: Healthcare AI The opportunity Build complex, production-grade AI agent systems from 0 to 1Architect distributed systems for enterprise healthcare environmentsWork across LLMs, agent orchestration, tool calling, multi-turn routing, and MCP integrationsOwn system architecture, scalability, and reliabilityStay deeply hands-on while providing technical guidance to other engineers What We're Looking For 7+ years building complex production systemsRecent hands-on experience as a Staff, Principal, Senior ML/AI, or Senior Software EngineerProven from 0 to 1 startup engineering experienceStrong Python and ML/AI engineering backgroundShipped experience with AI agents, tool calling, agent harnesses, or multi-turn systemsStrong systems thinking and distributed-systems experienceHigh agency and comfort operating in ambiguous early-stage environmentsBased in Europe / EMEA Strong advantages Healthcare or clinical systems experienceHIPAA, audit trails, or regulated-data environmentsDeep Data Science / Machine Learning backgroundAdvanced agent infrastructure, MCP, routing, and prompt-management experiencePrevious experience at high-growth AI-native startupsStrong Math, Physics, Computer Science, ML, or related academic background If this sounds like a fit, we'd love to hear from you. Apply today!