This is an exciting opportunity to work on core platform-level services that are essential to all of our cloud-supported products. You’ll gain deep domain and product knowledge, collaborating with multiple teams across the business. The APIs you’ll build will be highly scalable and present a variety of technical challenges. We make extensive use of GitHub Copilot to help deliver high-quality, maintainable code. You’ll also have opportunities to lead projects, working closely with architects and stakeholders to deliver impactful solutions. Role Summary: As a Senior Software Engineer (Backend), you will be responsible for designing, building, enhancing, and maintaining products and systems aligned with Sage’s business goals and architectural standards. You’ll play a key role in delivering high-quality, scalable solutions that exceed customer and business expectations, while also sharing expertise on technical solutions and business processes within your domain. Key Points: • Work on mission-critical platform services used across our cloud ecosystem. • Exposure to scalable API development and a variety of technical challenges. • Opportunity to collaborate across squads and departments. • Hands-on experience with modern tooling like GitHub Copilot. • Potential to lead initiatives and work closely with senior architects. • You will get personal development days to upskill any tech. skills • This is a hybrid position - you will work 3 days a week from our Newcastle office. Key Responsibilities • Design, develop, and maintain scalable, high-quality backend systems and APIs. • Collaborate with product managers, architects, and cross-functional teams to shape robust solutions. • Lead and contribute to the delivery of projects from concept to deployment. • Drive technical innovation and adopt modern tools, frameworks, and practices. • Mentor and coach junior team members. • Maintain clear technical documentation and ensure code quality standards are met. • Champion Agile best practices and foster a collaborative team culture. Essential Skills (Must-Haves): • Strong experience with C#, .NET Framework, and MySQL, delivering reliable and scalable solutions. • Microservices • Event-driven architecture • Proven ability to collaborate across functions, including Product Management, QA, and other business units. • Solid working knowledge of Agile and Scrum methodologies, with a focus on iterative development and continuous improvement. Secondary Skills (Nice-to-Haves): • BDD (Behavior-Driven Development) • AWS (Amazon Web Services)