Senior Backend Software Engineer

Senior Backend Software Engineer £80,000 to £90,000 + equity/options Fully remote (UK/EU) Unlimited holiday Private health insurance This growing start up has just won a major contract with the NHS. For a business of their size, that's a big moment, and it means real growth, new work and plenty to build over the next few years. They're now looking for a Senior Backend Software Engineer to join the team and help build the technology powering their platform. It's a brilliant opportunity for a senior engineer who enjoys ownership, autonomy and solving complex problems, and who wants to join at a genuinely exciting point. What they do Their modular, workflow-based platform connects labs, healthcare systems, APIs and bioinformatics pipelines, turning complex biological data into something people and healthcare providers can actually use. You'll be working on: Designing and building scalable backend systems and APIsDeveloping production-grade systems in Node.js and TypeScriptBuilding robust APIs and distributed systemsTaking ownership of projects from initial design through to productionImproving security, testing and overall platform reliabilityUsing AI-assisted development tools to speed up deliveryWorking closely with engineering, product, design and medical teams I'd like to speak to engineers with: Strong commercial Node.js and TypeScript experienceExperience building and scaling production backend systemsStrong API and distributed systems knowledgeExperience with relational databasesA product mindset, and the ability to take ownership and thrive in a fast-moving environmentAWS, Infrastructure as Code, event-driven architecture and NoSQL experience would be highly beneficial. Exposure to healthcare standards like HL7 or FHIR, or regulated software, would be a real bonus. What's on offer: Unlimited holidayEquity/optionsPrivate health insurancePensionParental leaveFully remote working, with an office in London Paddington If this role is of interest, apply here or drop me a message for a confidential chat. I'll share the client's name once we've spoken.