Senior Backend Engineer (.NET / Java Microservices) Contract: Inside IR35 Duration: 6 Months+ Hybrid - 2 days per week on site in London

We're seeking a Senior Backend Engineer to design, build and enhance scalable backend services and APIs within a complex enterprise environment. You'll play a key role in delivering modern microservices while contributing to technical design and engineering best practice.

Key Responsibilities

Design and develop backend services using C#/.NET and Java (Spring Boot).
Build and support REST APIs and microservices.
Contribute to architecture, technical design and system integration.
Troubleshoot, optimise and support production systems.
Collaborate with stakeholders and mentor other engineers.

Essential Skills

Strong commercial experience with C#/.NET and Java (Spring Boot).
Proven delivery of microservices and REST APIs.
Experience with distributed systems and enterprise integration.
Strong SQL expe...