Contract Python Developer Location: Milton Keynes - 5 days onsite per week Security Clearance: Active SC Clearance required £530 per day Inside IR35 We’re looking for an experienced Python Developer to join a high-performing engineering team delivering secure, scalable, and mission-critical systems. This is an opportunity to work on complex distributed architectures, collaborate with talented cross-functional teams, and contribute to solutions that operate at scale in a highly secure environment. The Role As a Python Developer, you will be responsible for designing, developing, testing, and maintaining high-quality software solutions. You’ll work across the full software development lifecycle, contributing to architecture discussions and ensuring robust, production-ready services. Key Responsibilities Develop, enhance, and maintain Python-based applications and services Design and build microservices within distributed system architectures Write clean, efficient, reusable, and well-documented code Participate in the full SDLC from requirements analysis to deployment and ongoing support Build and integrate RESTful APIs and third-party services Troubleshoot performance issues and resolve application bottlenecks Implement robust testing practices including unit testing and code reviews Work with asynchronous processing, messaging systems, and background workers Essential Technical Skills 5 years’ hands-on Python experience building production-grade applications 3 years’ commercial Golang experience developing scalable backend services 3 years’ C# / .NET experience delivering enterprise-grade solutions Strong experience designing and delivering microservices-based architectures Deep understanding of distributed systems, service-to-service communication, and fault tolerance Experience building and integrating RESTful APIs across complex systems Strong knowledge of asynchronous/thread processing and messaging systems Experience with Git-based workflows and CI/CD pipelines Understanding of authentication, authorisation, and security best practices If this role is of interest, please apply to hear more.