Senior Backend Engineer (Java/.Net and Microservices)

Senior Backend Engineer (.NET / Java Microservices) Contract: Inside IR35 Duration: 6 Months+ Hybrid - 2 days per week on site in LondonWe''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 ResponsibilitiesDesign 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 SkillsStrong 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 experience (SQL Server and/or Oracle).We''re Looking ForEngineering Ownership - Takes responsibility for delivery end-to-end, including debugging, optimisation and resolving production issues.Microservices and Distributed Systems - Strong understanding of scalable, distributed architectures and the challenges around reliability and performance.Event-Driven Thinking - Knowledge of event-driven architectures, decoupled systems and real-time data flows.Architecture and Design - Applies sound engineering principles and contributes to solution design and technical ..... full job details .....