Principal Software Engineer (+ Equity) at stealth healthcare AI startup

Company: TechTree
Apply for the Principal Software Engineer (+ Equity) at stealth healthcare AI startup
Location: London
Job Description:

Overview

This is a role that TechTree is recruiting for on behalf of one of our clients. TechTree is an AI-driven recruitment platform working with high-growth companies. When you apply, our AI Agent matches you not just to this role, but to other relevant opportunities across our network, so one application can unlock multiple roles.

About The Role

About The Role: We are seeking a Principal Software Engineer to deploy AI systems in healthcare, focusing on patient communication, triage, and secure data layers using Python. You will work directly with hospitals and clinics to deploy and refine enterprise-grade systems, including AI-driven patient communication and triage, agent orchestration systems, 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.

What You’ll Be Doing

  • 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

What We’re Looking For

  • 5+ years building complex, production-grade systems
  • Experience turning ambiguous requirements into scalable solutions
  • Background in healthcare, AI, or agentic systems is a plus
  • Comfortable operating in fast-moving environments with direct ownership
  • Low ego, high agency, and comfortable working in a lean team

Compensation & Benefits

  • €100,000 – €200,000 salary
  • Equity included

About The Company

This is a stealth healthcare AI startup with a mission to use AI to automate GP diagnosis and build agents capable of full doctor-level tasks, making healthcare truly accessible. We are seeking exceptional senior engineers who thrive on solving humanity’s toughest problems. While Python is our core, we are stack-agnostic for the right talent—bring your expertise in Rust, Go, TypeScript, or whatever fuels your best work.

What is TechTree?

TechTree combines AI agents with a human support team to give candidates a better, more transparent hiring experience.

Our AI Agent gets to know your background, experience, and what you’re optimizing for. It continuously matches you to live roles across our network where there’s genuine alignment, not just keyword overlap.

Our Human Team is there to support you through the process:

  • Answer questions about roles, process, and next steps
  • Add context when something in your background isn’t obvious
  • Help unblock stalled processes or unclear feedback
  • Make sure you’re not left guessing, ghosted, or wasting time

We only post real jobs. Every role on TechTree is a live, active hire.

If you apply: you’ll be considered for this role, you may also be matched to other relevant roles, and if there’s no fit, we won’t spam you.

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Posted: May 8th, 2026