Salary: £70,000 - 70,000 per year Requirements: Strong experience in .NET or full-stack development. Proven track record with RESTful APIs, microservices, and modular monolith design. A passion for clean, scalable code and modern software architecture. Excellent communication and leadership skills. Responsibilities: Take ownership of technical architecture and design for new projects. Build and optimise RESTful APIs, microservices, and modular monolith architectures. Contribute to strategic technical decisions and ensure best practices across the team. Design and implement robust solutions using .NET or full-stack technologies. Technologies: microservices ASP.NET More: Are you ready to take the lead in shaping cutting-edge software solutions? We are a UK-leading software house on a mission to deliver innovative, scalable, and high-performing applications, and we want you to be part of it. As a Principal Developer, you will play a fundamental role in guiding a team of six skilled developers, driving technical excellence, and influencing architectural decisions. This is your chance to work on exciting greenfield projects that influence modern technologies and best practices—no legacy code, just fresh innovation. Why join us? You will work for a UK-leading organisation with a reputation for innovation, enjoy hybrid flexibility with up to two days per week in the office, and thrive in a supportive, collaborative environment where your ideas truly matter. Plus, we offer a competitive salary and benefits package. If you are ready to make an impact, apply today and help us build the future of software solutions! last updated 10 week of 2026