Senior Full-Stack Engineer
Senior full-stack engineer at Perci Health, the UK's largest virtual cancer clinic, building patient-facing features end to end (TypeScript, Node.js, React, FHIR/Medplum) while helping shift the team toward AI-agent-driven development with precise specs and verification. Fully remote, reports to the CTO.
- Compensation
- £80K–£95K / yr
- Location
- London, United Kingdom
- Work setup
- Remote
- Seniority
- Senior
- Employment
- Full time
- Experience
- 6+ years
- Category
- Fullstack
- Posted
Skills
Must have
- Around 6+ years building software end to end, ideally TypeScript, Node.js and React
- Substantial system design and architecture experience, including systems in production
- Practical experience of distributed systems and third-party integrations (auth, webhooks, rate limits, retries, fault tolerance, transactions)
- Strong testing ability and practice
- Experience using AI coding agents on production work
- Comfortable with ambiguity and unblocking yourself
- Experience working in a small team with underspecified requirements
- Able to describe systems precisely in writing (think on paper)
- Clear and confident communicator, comfortable in fully remote working
- Pragmatic about technology and open to experimentation
- Motivation to build products that benefit people
Nice to have
- Experience in a regulated industry such as healthcare or finance
- Familiarity with FHIR R4 or other healthcare data standards, and Medplum or similar
- AWS infrastructure experience
- Some Flutter exposure
- Evidence of interest in craft outside work (writing, open source, community)
- Startup, scale-up or founding engineer experience
Full description
Perci Health is reimagining how cancer care is delivered and experienced. As the UK’s largest virtual cancer clinic, we provide whole-person, end-to-end support - from risk reduction and early detection to rehabilitation and long-term recovery.
We exist to close the critical care gap in modern cancer services, combining digital innovation with expert-led human care. Backed by Macmillan Cancer Support and invested in by over 35 of the UK’s leading oncologists and cancer surgeons, we are building a new model of care, one that’s proactive, personalised, and precision-led.
We’ve pioneered Performance Oncology, a new standard of cancer care inspired by the principles of elite sport. Our multidisciplinary teams work collaboratively across more than 20 clinical specialisms to deliver personalised care plans that help people reduce risk, navigate treatment, manage side effects, and rebuild their lives.
At Perci, you’ll join a compassionate, mission-driven team united by one goal: to radically improve outcomes for everyone affected by cancer. Our innovative virtual clinic makes specialist-led care more accessible, reducing avoidable complications and transforming lives.
Founded by a cancer clinician and a digital transformation leader, Perci blends deep clinical insight with consumer-grade digital experience. Together, we’re setting a new benchmark for cancer care, proving that quality, compassion, and innovation can coexist.
Help shape the future of cancer care. Welcome to Whole Human Cancer Care.
Role Purpose
We are hiring a Senior Full-Stack Engineer to build Perci's platform, and at the same time help us shift how that platform gets built. The platform is how our members reach their care, often at a point when they need it most.
Today we work conventionally; a specification is written, an engineer builds it, another reviews it. We think that is changing, with far more of the code written by AI agents, and we intend to be early to it. Most engineering practice assumes that writing code is the expensive part, which is why we favour reuse over rewriting. As that cost falls, the value moves towards deciding what to build and proving it was built correctly. Working out what that means for us is a significant part of this role.
You would be joining a team doing recognisable full-stack work on a live product, with patients using it and delivery dates to meet. Part of the role is helping us move from where we are today to where we believe we need to be.
This is one of our first permanent engineering hires. You will report directly to the CTO and work alongside a small group of senior engineers.
The work as it is today
- Design, build and ship features end to end, from data model and API design through to frontend implementation.