> Markdown version of [/jobs/ext/3740189-senior-full-stack-developer](https://www.wearedevelopers.com/jobs/ext/3740189-senior-full-stack-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Full Stack Developer - **Company:** Harnham - **Location:** London, UK (Remote available) - **Experience:** Expert - **Salary:** £70,000.0 - £85,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Continuous Integration, PostgreSQL, Enterprise Messaging Systems, MongoDB, Node.Js, Redis, Next.js, TypeScript, Web Applications, ReactJS, Backend, Event Driven Architecture, Apache Kafka, Graphql, Restful APIs, Docker, Microservices - **Published:** October 15, 2026 - **Apply:** https://www.reed.co.uk/jobs/senior-full-stack-developer/57461826 ## About the Role You will bring strong capability in: * Node.js and TypeScript development. * React and Next.js. * GraphQL and REST API development. * Microservices and event-driven architectures. * Kafka or similar messaging technologies. * PostgreSQL, MongoDB and Redis. * AWS, Docker and CI/CD practices. * Strong communication skills and the ability to influence stakeholders * ## Description This is a great opportunity to join a high-growth technology business where you can take ownership of large-scale platform development, influence engineering decisions, and help shape the future of a globally recognised connected technology product. THE COMPANY: This international technology company develops connected consumer products and subscription-based digital services, helping families stay connected through innovative software and hardware solutions. Following continued growth, they are investing heavily in modernising and scaling their engineering platform. THE ROLE: Joining a growing platform engineering team, you will play a key role in rebuilding and enhancing core services that support customers globally. This is a hands-on senior engineering position where you'll own projects from design through to production while mentoring others and helping drive engineering best practice. Key responsibilities include: * Designing, building and maintaining backend services, APIs and web applications. * Owning features throughout their lifecycle * Working across microservices and event-driven architectures. * Collaborating with a wide range of technical and non-technical stakeholders. * Mentoring engineers * Helping drive technical decisions and platform modernisation initiatives.