Senior Full Stack Engineer
*Location: Shoreditch, London, UK (3 days in the office, 2 days from home)
*Salary: £90,000 – £110,000 per annum + Equity
*Job Type: Full-time, permanent
About the Role
A high-growth, award-winning consumer platform is seeking an exceptional Senior Full Stack Engineer to help architect, build, and scale its next-generation digital platform. The business operates a high-performance, modular system designed for real-time data-driven decision making, high concurrency traffic, and rapid feature deployment.
Following significant investment and ambitious plans for expansion in the UK and internationally, the organisation is growing its in-house engineering team and is looking for a senior-level engineer to play a pivotal role in the platform’s evolution.
This is a build-and-scale role not maintenance. You will directly influence architecture, engineering standards, and key product decisions.
Key Responsibilities
*Design, build, and maintain scalable backend services using TypeScript, Bun, and Elysia
*Develop and optimise database interactions using Drizzle ORM with PlanetScale
*Work with Redis and UpStash to ensure high performance under load
*Contribute to cross-platform mobile apps built with React Native and Expo
*Build and refine front-end experiences using Tailwind CSS / NativeWind
*Use Docker for environment consistency
*Deploy services within the Fly.io ecosystem
*Maintain high-quality CI/CD workflows with GitHub, Blacksmith, and automated review tools
*Write comprehensive unit, integration, and end-to-end tests
*Ensure platform security across applications, infrastructure, databases, and supply chains
*Partner with marketing and data teams on real-time integrations (e.g., Klaviyo, Twilio, payment orchestration providers)
*Continuously enhance performance, observability, and developer tooling
Candidate Requirements
Essential
*5+ years’ professional software engineering experience
*Strong TypeScript expertise
*Experience building and scaling backend services (Node.js or Bun)
*Proficiency with SQL and relational databases
*Experience with caching layers such as Redis
*Experience with production-grade front-end or mobile development (React / React Native preferred)
*Familiarity with Docker and containerised deployments
*Strong understanding of application security
*Experience working in high-growth, fast-paced environments
Highly Desirable
*Experience with edge or distributed infrastructure
*Familiarity with observability tools / OpenTelemetry
*Experience in regulated or payments-adjacent environments
*Experience with modular, multi-tenant, or multi-brand architectures
Benefits
*Casual dress
*Company pension
*Employee stock ownership plan
*Company events
*Free or subsidised travel
*Sick pay
*Good transport links
*Hybrid working