Principal Staff Software Engineer

The client is a stealth healthcare AI venture founded by experienced leaders, including the former VP of Engineering at Tumblr and founding CTO of Oscar Health. They are in the early 0 to 1 startup stage, building autonomous agents to perform full doctor tasks in large healthcare. You will work directly with hospitals and clinics to deploy and refine enterprise-grade systems, including AI-driven patient communication and triage, agent orchestration, and secure healthcare data layers with low-latency voice and video. This is a hands-on, Python-heavy role focused on building and scaling distributed systems and solving complex, high-impact problems. At the principal/staff level, you will own system architecture and reliability at scale while supporting and guiding other engineers.

Responsibilities:
- Architect and scale AI agents for healthcare applications.
- Work on systems involving LLMs, reinforcement learning, and agent-based architectures.
- Collaborate with a small team to ship and iterate quickly.
- Solve high-impact problems, including system performance and clinical accuracy.
- Design system architecture and own reliability at scale.
- Support team members through code reviews and knowledge sharing.

Requirements:
- 7+ years building complex, production-grade systems.
- Systems thinking: designing scalable systems and owning architecture decisions.
- Problem solving: turning ambiguous requirements into scalable solutions.
- Leadership: supporting other engineers through code reviews and technical guidance.
- Low ego, high agency, and comfort in a fast-moving environment.

Preferred Qualifications:
- A background in healthcare, AI, or agentic systems.

Location: Remote - Belgium, Netherlands, Luxembourg, Germany, Italy, Poland, Spain, France, Portugal, Austria, Hungary, Estonia, Latvia, Slovenia, Slovakia, Czech Republic, Lithuania, Greece, Danmark, Finland, Sweden, Norway

Skills required for this job:

• AI/ML development in B2B
• Software architecture
• Systems design
• Tech leadership