Hybrid | UK | Full-time

We’re a recently funded, early-stage preventative-health company building a physician-led platform that combines blood testing, genetics and longitudinal health data.

We’re currently operating in stealth and are hiring our first full-time engineer to work alongside the CTO.

You’ll join a real product with real clinical workflows, integrations and users, alongside technical debt and architectural decisions that need improving. You’ll have substantial influence over what we build next and how the technology evolves.

This is a role for someone who likes taking a problem from vague brief → product decision → technical design → production, rather than waiting for perfectly specified tickets.

You’ll work across the platform, including:

• Building clinician-facing and member-facing product features
• Visualising longitudinal biomarkers, test results and health data
• Developing and maintaining laboratory and clinical-data integrations, including webhooks, signature verification and HL7-style data flows
• Working with genomic data and genetic testing panels
• Designing secure permission models, audit trails and workflows around sensitive health and genomic data
• Building human-in-the-loop AI features, such as helping draft clinician-facing summaries from longitudinal health information
• Improving testing, observability, reliability and developer experience
• Paying down technical debt and helping decide how the architecture should evolve as the company grows

The core application currently uses:

React · TypeScript/JavaScript · Firebase · Firestore · Firebase Authentication · Cloud Functions · Tailwind · Cypress

We also have Python Cloud Functions/services supporting parts of our payments and laboratory workflows.

We’re not looking for someone because they already know every technology in that list.

We care more about whether you can understand an existing system, make good engineering decisions, and improve it without unnecessarily rebuilding everything.

There are architectural decisions ahead of us, and you’ll have meaningful input into them.

You’ll likely be a strong fit if you have:

• Several years of experience building and shipping production web applications across the stack
• Strong React and TypeScript/JavaScript experience
• Good judgement around data modelling, APIs, security and maintainability
• Experience owning meaningful features in production from idea through to release
• Strong product and UX instincts, you care whether what you build actually works for the person using it
• The ability to work independently in a small team and communicate clearly when requirements are ambiguous

Experience with any of these would be valuable:

• Firebase, Firestore or other serverless/document-database architectures
• Healthtech, fintech or another regulated/data-sensitive environment
• AI/LLM-powered product features
• Data visualisation
• Early-stage startups

Healthcare experience is not a requirement. Curiosity about the clinical domain is.

You’ll work directly with the CTO and closely with clinicians and the wider founding team.

Because this is our first engineering hire, the scope is deliberately broad. We want someone who can eventually own substantial areas of the product rather than simply contribute individual tickets.

£70,000–£80,000 base salary, depending on experience

Equity participation

We want this person to have genuine ownership in what we're building, so the role will include equity alongside base salary.

A conversation about your background, things you’ve built, what you’re looking for next, and more about the company and role.

A single working session combining technical discussion with a practical exercise.

We’ll work through a realistic problem together, looking at how you approach product decisions, architecture, data, implementation and trade-offs. There may be a small hands-on coding component, but we’re interested in how you think and build rather than algorithm puzzles or trivia.

A short conversation with the CEO to get to know each other, discuss the company and its direction, and make sure there’s a strong mutual fit.

During the interview process, we’ll share much more about the company, funding, product, clinical team, current technology and what we’re building next.

If this sounds interesting, send us your CV or LinkedIn profile, plus a link to something you’ve built if you have one, and a few sentences about why this role caught your attention.