Senior Back-End Developer - C# / .NET / SQL Server C#, .NET 6, SQL Server, REST & GraphQL APIs, Azure, Git Salary up to £65k Onsite in Central Manchester Excellent career progression Who We Are We're a collaborative tech team delivering robust, scalable SaaS products to a global customer base. Our developer-led culture values clean, maintainable code, innovation, and continuous learning. With an ambitious roadmap ahead, we're expanding our back-end capabilities and looking for a Senior Developer to help shape and deliver our next generation of features. Who We're Seeking We're looking for a Senior Back-End Developer with deep expertise in C# (.NET 6) and SQL Server, plus strong experience building and maintaining RESTful and GraphQL APIs. You'll work in a collaborative agile environment, contributing to the full development lifecycle from concept to deployment. You'll have a strong grounding in SOLID principles, OOP, and TDD (NUnit preferred), alongside advanced Git skills. Nice-to-haves include experience with Entity Framework, CI/CD pipelines, Azure, observability practices, and diagnosing production issues. Benefits 25 days holiday bank holidays birthday off (increases with service) £500 annual training budget 2 conference days per year Profit share scheme Friendly, forward-thinking team culture Agile workflows with real influence over technical direction Regular socials and professional development time Health scheme, EAP, cycle-to-work, and retail discounts What Happens Next? Please either apply online or email me directly at. For more information, feel free to call me on 07880 358 148. By applying, you consent to us processing your details for this vacancy only. We look forward to hearing from you! Key Skills: C#, .NET 6, SQL Server, REST APIs, GraphQL, Git, Agile, TDD (NUnit), Entity Framework, Azure, Design Patterns, Observability, Security Best Practices