Back End Developer

Senior Backend Engineer, London, £60,000 - £75,000 + Benefits

A Senior Backend Engineer is needed to join an ambitious and fast-scaling technology company operating within a regulated market. This role is based in central London 4 days a week on-site.

As their product suite evolves and customer demand increases, they are investing in senior engineering talent to strengthen backend capability and long-term platform resilience. This hire is central to that journey, offering meaningful equity and the opportunity to influence architectural decisions at a critical stage of growth.

The Senior Backend Engineer (Full Stack, backend-leaning) will take ownership of complex backend REST API Services and deliver scalable systems using TypeScript and Node.js. You will closely with Product, Engineering and Operations, working alongside the Lead Engineer to refine technical direction, improve delivery standards and elevate system reliability.

The Senior Backend Engineer (Full Stack, backend-leaning) will...

• Design and maintain scalable Node.js/TypeScript services and REST APIs

• Own backend initiatives end-to-end, from architecture to rollout

• Strengthen testing strategy across unit and integration layers

• Improve data and integration workflows with observability and resilience

• Optimise Postgres (RDS) and MongoDB performance, modelling and migrations

The role requires...

• Strong commercial experience with Node.js and TypeScript

• Deep API design expertise, including versioning and backwards compatibility

• Solid Postgres knowledge: querying, modelling and performance tuning

• Clear communication of trade-offs and pragmatic architectural decisions

• Independent delivery of reliable, production-grade systems

This Senior Backend Engineer (Full Stack, backend-leaning) role offers genuine ownership and influence in a business where engineering quality directly impacts customer trust.

To apply please click below with a copy of your CV.