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Founding Fullstack Software Engineer (+ Equity) at Well-funded AI healthtech startup

Jack & Jill

London, England, UK
Full-time
Healthtech & Digital Health
Posted 1 Jul 2026

Job Description

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network.

The next step is to speak to Jack.

Title Founding Fullstack Software Engineer (+ Equity) at Well-funded AI healthtech startup

Job Title Founding Fullstack Software Engineer

Salary Not Disclosed + Equity

Company Description Well-funded AI healthtech startup

Job Description Join a high-growth startup as a Founding Engineer building an AI Operating System for mid-market healthcare clinics. Working directly with an Oxford PhD CTO, you will architect 0-to-1 solutions that automate clinical workflows. This role offers high autonomy to define technical specifications and ship impactful features that modernize patient care operations.

Location London, UK

Why this role is remarkable

  • Rare opportunity to join as a Founding Engineer with significant equity and direct influence over the core product architecture and technical roadmap.
  • Work on cutting-edge AI integrations including RAG pipelines and agentic systems to solve real-world operational burdens for underserved healthcare providers.
  • Collaborative, flat team structure in a well-funded environment with strong runway and direct feedback loops from early design partner clinic chains.

What You Will Do

  • Architect and develop scalable web applications using Next.js, TypeScript, and Node.js or Python, ensuring high security and healthcare data compliance.
  • Design and implement sophisticated AI features by integrating LLMs and modern AI APIs into the platform’s core clinical automation workflows.
  • Manage cloud infrastructure on GCP or Azure while collaborating with the CTO to translate customer needs into production-ready technical solutions.

The ideal candidate

  • Strong production experience with Next.js, TypeScript, and either Node.js or FastAPI, alongside a background in integrating LLMs and RAG pipelines.
  • Proven track record of 0-to-1 product development or previous startup experience, demonstrating the ability to thrive in ambiguous, fast-paced environments.
  • Solid academic foundation in a STEM field from a top-tier university, combined with a desire for high ownership and direct customer interaction.

Who are Jack &​ Jill? Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support.

And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate.

How does this work?

  • Jack's an AI agent for job searching and career coaching. He works for you.
  • Jill is the AI recruiter working for the company. She recruits from Jack's network.
  • If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives.

We never post fake jobs This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.

Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.

We appreciate this can make them look a bit suspect, but there isn't much we can do about it.

Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.

Interested in this role?

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