Salary: £80,000 - 80,000 per year Requirements: Strong experience developing backend systems with C# and .NET Deep knowledge of cloud environments (Azure preferred) Experience in designing APIs and microservices at scale Solid understanding of automation testing tools (Playwright desirable) Leadership experience - mentoring, coaching, and guiding engineering teams Strong problem-solving skills with an eye for performance optimisation Enthusiasm for delivering quality solutions in a SaaS environment Responsibilities: Architect and build scalable backend services in C# / .NET Drive adoption of clean coding practices, design patterns, and SOLID principles Mentor engineers, fostering a culture of growth, learning, and high performance Collaborate with product owners to refine requirements and translate them into technical solutions Integrate automation testing (Playwright) and CI/CD pipelines to ensure code quality Lead technical discussions, setting direction on tools, frameworks, and approaches Troubleshoot and resolve complex technical challenges across backend services Optimise system performance and ensure resilience across platforms Review code and guide engineering standards across the team Contribute to product strategy by aligning technical roadmaps with business goals Technologies: Architect Azure Backend C# CI/CD Cloud Playwright microservices ASP.NET More: We are a rapidly growing SaaS organization, looking for a Principal Backend Developer who will help shape the future of our innovative products. In this career-defining role, youll take ownership of backend systems while leading a talented team of engineers. We offer a dynamic work environment focused on growth and excellence, where your contributions will make a real difference. Join us in building systems that are robust, scalable, and future-proof. last updated 11 week of 2026