Join one of Simple’s first AI-Engineering teams a lean, senior, high-ownership engineering squad.
Work in a spec-first, AI-native SDLC: AI generates code, tests, and documentation; you architect, review, integrate, and assure quality.
Build core components of Simple’s healthcare platform.
Own services end-to-end: design, implementation, observability, reliability, performance.
Elevate engineering standards across pods, codify reusable patterns, and help define the golden paths for platform development.
Help shape the engineering culture as one of the foundational hires, mentoring, pairing, cross-reviewing and sharing knowledge as we grow.

Essential Experience building production-grade software in modern languages (TypeScript/Node.js (Preferred), Python, Java, Go
any strong engineering foundation is fine).
Experience building cloud-native systems (AWS preferred): Lambdas, ECS/Fargate, API Gateways, serverless or containerised architectures.
Strong skills in automated testing, CI/CD, and modern practices.
Comfortable working with generative AI tools (or strong willingness to adopt them) to accelerate development.
Deep understanding of software fundamentals: architecture, clean code, performance, observability, maintainability.
Strong ownership mindset: you care about outcomes, not just code.
Excellent collaborator: you work well in small, high-trust environments and you’re comfortable with pairing, knowledge sharing, and cross-pod communication.
Desirable Experience in healthcare, digital services, patient journeys or regulated environments (not required).
Full-stack experience: Comfortable working across the stack using React/Next.js when required, though core strengths are backend, cloud-native systems and platform architecture.
Experience building scalable platforms, reusable components, or high-leverage engineering systems.
Curiosity about AI-native development and excitement about being part of an early shift in engineering.

33 days (Inclusive of Bank Holidays) + 1 day after 2 years of service, up to 5 extra days
Extra day off for your birthday
Company share scheme
Bupa Private Healthcare
Income Protection
Cycle to Work Scheme
My Gym Discounts
Enhanced Company pension scheme
Quarterly Team Training and Social Budget
Enhanced Maternity and Paternity Leave
Rewarding bonus incentive scheme
24/7 helpline for physical and mental health support, counselling, and other wellbeing resources.
Love2Shop Discount
Fresh fruit
A free coffee machine

Senior Software Engineer – Backend AI Native

Key skills