Senior Backend Software Engineer

This is a fantastic opportunity for a skilled and forward-thinking Senior Backend Software Engineer to play a key role in designing, building, and managing cutting-edge cloud-based software platforms. You'll do this by collaborating closely with other software engineers, product owners, product designers, technical leads and senior engineering manager to create suitable solutions that transform the organisation, which also align to our engineering and architecture standards.

This role is ideal for someone who thrives in a collaborative environment, enjoys solving complex technical challenges, and is passionate about delivering high-quality, reliable software solutions. You will also be able to lead technical discussion and mentor junior members of the team.

What You'll Do

• Design and build scalable, high-performance software using C# and .NET, creating clean, testable code that's built to last.
• Strengthen the performance, reliability, and uptime of distributed systems through smart automation and streamlined deployment.
• Embed strong security practices into everything you build, ensuring alignment with industry standards.
• Champion Agile and Lean ways of working, delivering value quickly through continuous improvement.
• Collaborate closely with business and technical stakeholders to bring ideas to life end-to-end.
• Support and mentor junior engineers, contribute to engineering standards, take part in code reviews, and help keep documentation clear and up to date

• Strong experience with C# and .NET Core, with solid backend engineering fundamentals
• Hands-on building microservice and event-driven architectures, including RESTful APIs
• Experience working in Azure, including Entra and modern authentication/authorisation practices
• Skilled in containerisation and automation (e.g. Docker)
• Practical experience with CI/CD pipelines, DevOps, Infrastructure as Code, and observability (monitoring, metrics, tracing, alerting)
• Test-first mindset, with experience across unit, integration, E2E, and contract testing (e.g. XUnit, Playwright, PACT)
• Comfortable working in Lean/Agile environments (e.g. Agile, SAFe), with an understanding of security and compliance standards (ISO 27001, GDPR)
• A strong problem-solver and clear communicator, able to thrive in fast-paced environments and collaborate effectively across teams

A competitive salary between £55,208 - £75,000 per annum - dependent on capability

Additional benefits:

• A competitive contributory pension scheme where we will double match your contribution to a maximum company contribution of 12%
• You will receive a bonus based on personal and company performance
• Flexible benefits such as a cycle scheme, share incentive plan, technology schemes
• Access to apps such as digital GP service for round the clock access to GP video consultations and NHS repeat prescriptions, wellbeing app to support your health and fitness
• Access to Work + Family Space, providing support and resources for work and family life, including paid emergency childcare and eldercare

At National Grid, our commitment to a cleaner, greener energy future is powered by the dedication and ingenuity of our people. Join our team as Senior Backend Software Engineer and be a part of something bigger-where your unique skills and passions can make a real difference. Together, we are superpowered.