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

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

London Full-Time 70000 - 90000 £ / year (est.) No working from home possible
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At a Glance

  • Tasks: Build an AI Operating System for healthcare clinics and develop scalable web applications.
  • Company: Exciting AI healthtech startup with a focus on innovation.
  • Benefits: Equity, high autonomy, and the chance to shape the future of healthcare.
  • Other info: Collaborative team with strong growth potential and direct feedback from partners.
  • Why this job: Join as a Founding Engineer and make a real impact in healthcare technology.
  • Qualifications: Experience with Next.js, TypeScript, and AI integrations; startup experience preferred.

The predicted salary is between 70000 - 90000 £ per year.

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 modernise patient care operations.

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.

Founding Fullstack Software Engineer (+ Equity) at Well-funded AI healthtech startup in London employer: Jack & Jill

Join a pioneering AI healthtech startup in London, where you will have the unique opportunity to shape the future of healthcare technology as a Founding Fullstack Software Engineer. With a collaborative and flat team structure, you will work closely with an Oxford PhD CTO, enjoying high autonomy and significant equity while contributing to impactful solutions that modernise patient care operations. This well-funded environment not only fosters innovation but also offers ample opportunities for personal and professional growth, making it an exceptional place for those looking to make a meaningful impact in the healthcare sector.

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Contact Details:

Jack & Jill Recruitment Team

StudySmarter Expert Advice🤫

We think this is how you could land Founding Fullstack Software Engineer (+ Equity) at Well-funded AI healthtech startup in London

Join Local Tech Meetups

Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Jack & Jill or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!

Contribute to Open Source Projects

Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Jack & Jill.

Tap into Online Developer Communities

Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Jack & Jill.

Explore Job Boards Specifically for Tech Roles

Keep your eyes peeled on job boards that focus on tech roles. Sites like TechCareers or Stack Overflow Jobs can often have listings for companies like Jack & Jill that might not show up on broader job sites. Make it a habit to check these regularly, and don’t hesitate to apply directly through our website!

We think you need these skills to ace Founding Fullstack Software Engineer (+ Equity) at Well-funded AI healthtech startup in London

Next.js
TypeScript
Node.js
Python
LLMs (Large Language Models)
RAG pipelines
Cloud Infrastructure Management

Some tips for your application 🫡

Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.

Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Jack & Jill.

Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Jack & Jill and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!

Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!

How to prepare for a job interview at Jack & Jill

Brush Up on Your Coding Skills

For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.

Know Your Tools and Frameworks

Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Jack & Jill uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.

Showcase Your Projects

Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.

Prepare for Behavioural Questions

While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.