Senior Backend Developer (Hybrid)

Senior Backend Integration Developer (12-Month Fixed Term) Salary: Up to 140,000 (DOE) Location: Flexible / Hybrid About the Company A global technology organisation specialising in digital solutions for sports and membership-based communities. The company provides software platforms and services to national bodies, clubs, and millions of end users worldwide. With a strong growth trajectory, the organisation is focused on expanding its international presence, enhancing its existing product suite, and delivering innovative new solutions. The Opportunity We are looking for multiple Senior Backend Integration Developers to join a high-performing team delivering a large-scale mobile application project. This role focuses on backend API development and complex system integrations, connecting new mobile features with existing live platforms. You’ll be working within a collaborative, cross-functional team environment to deliver scalable, high-quality solutions used by a global audience. Key Responsibilities Design and develop secure, scalable, and high-performance backend systems Build and maintain RESTful APIs to support mobile application features Integrate new systems with existing platforms and services Contribute to system architecture, design decisions, and ongoing refactoring Collaborate with product managers, designers, and frontend/mobile developers Leverage AI development tools to improve efficiency while maintaining code quality Translate business and technical requirements into robust solutions Ensure performance, reliability, and security best practices are followed Skills & Experience Strong experience with C# / .NET Proven experience building secure RESTful APIs (JSON) with JWT authentication Solid experience with SQL databases and schema design Proficiency with Git version control Experience designing scalable, secure, and high-performance systems Hands‑on experience with AWS cloud services Familiarity with CI/CD pipelines ( GitHub Actions, Jenkins ) Experience working in Agile or similar delivery environments Strong communication skills and ability to work across distributed teams Experience with mobile app backend integration (desirable, not essential) Familiarity with tools like Jira / Confluence (desirable) What’s on Offer Flexible working environment Supportive, collaborative team culture Additional perks such as birthday leave and in-office benefits Opportunity to work on a high-impact, globally used product Strong emphasis on work-life balance and team wellbeing Keywords C#, .NET, Backend Development, API Development, RESTful APIs, JSON, JWT Authentication, AWS, Cloud Computing, SQL Server, Database Design, System Integration, Microservices, CI/CD, GitHub Actions, Jenkins, Agile, Jira, Confluence, Mobile App Backend, Scalable Systems, High Performance Systems, Software Architecture, DevOps, Integration Developer #J-18808-Ljbffr