Principal Software Engineer (C#)

Job Description:

Are you passionate about solving complex engineering challenges? Do you love understanding systems at a deep technical level? If so, this is your opportunity to lead and shape the technical direction of Sage for Accountants, working across multiple engineering squads as a Principal Software Engineer.

This is a hybrid role – three days per week in our Manchester or Newcastle office.

Why Join Us?

• Work with a modern tech stack, including C#,.NET, AWS, REST APIs, and more.

• Drive technical innovation and scalability in a collaborative, engineering-led environment.

Key Responsibilities:

What You’ll Be Doing

• Architecting and evolving Sage for Accountants, optimizing performance, infrastructure, and scalability.

• Providing hands-on technical leadership across engineering and QA teams.

• Designing and implementing enterprise solutions with best practices in microservices, event sourcing, and domain-driven design.

• Championing CI/CD pipelines, automation, and an API-first approach.

• Driving a culture of continuous learning and technical excellence.

What You Bring

• Proficiency in C#.NET, AWS / Azure, and modern backend development.

• Expertise in enterprise architecture and software design patterns.

• Hands-on experience with Agile, SCRUM, or Extreme Programming.

• Strong problem-solving skills and ability to adapt to new technologies.

• Proven experience delivering high-performance, scalable systems.

• Hands-on experience with TDD/BDD, CI/CD pipelines (Docker, TeamCity, GitHub), and open-source technologies.

• Deep understanding of microservices, event-driven architectures, and cloud-native development.

Join us in building the future of Sage for Accountants. If you thrive in a fast-paced, problem-solving environment, we’d love to hear from you!

Function:

Product Delivery

Country:

United Kingdom

Office Location:

Manchester;Newcastle

Work Place type:

Hybrid

Advert

Working at Sage means you’re supporting millions of small and medium sized businesses globally with technology to work faster and smarter. We leverage the future of AI, meaning business owners spend less time doing routine tasks, like entering invoices and generating reports, and more time pursuing their ambitions.

Our colleagues are the best of the best. It’s why we were awarded 2024 Best Places to Work by Glassdoor. Because to achieve extraordinary outcomes, we need extraordinary teams. This means infusing Sage with people who knock down barriers, continuously innovate, and want to experience their potential.

Learn more about working at Sage:sage.com/en-gb/company/careers/working-at-sage/

Watch a video about our culture:youtube.com/watch?v=qIoiCpZH-QE

We celebrate individuality and welcome you to join us if you embrace all backgrounds, identities, beliefs, and ways of working. If you need support applying, reach out atcareers@sage.com.

Learn more about DEI at Sage:sage.com/en-gb/company/careers/diversity-equity-and-inclusion/

Equal Employment Opportunity (EEO)

Sage is committed to Equal Employment Opportunity and providing reasonable accommodations to applicants with physical and/or mental disabilities.

In order to provide equal employment and advancement opportunities to all individuals, employment decisions at Sage will be based on merit, qualifications, and abilities. Sage does not discriminate in employment opportunities or practices on the basis of race, color, religion, sex, national origin, age, protected disability, veteran status, sexual orientation, gender identity, genetic information, or any other characteristic protected by applicable law.