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  • Senior .NET Software Developer- Various locations across the UK

About The Role

DM is a global business and technology consultancy seeking a Senior .NET Software Developer to work for our client within the Public Sector sector. This is initially a 6 month contract with very good prospects to extend and will be a hybrid role based in either London Bristol, Liverpool, Manchester, Leeds, Birmingham and Newcastle.

Our client is seeking an experienced Senior .NET Software Developer to lead the design and delivery of complex features across a critical Investment Programme platform. Working within a modern Microsoft technology stack, you will play a key role in technical decision-making, architecture, mentoring and the delivery of secure, scalable digital services. This is an opportunity to combine hands-on development with technical leadership while helping shape the evolution of a large-scale enterprise platform.

Responsibilities:

  • Lead the design, development and delivery of complex software solutions across web applications, domain services and CRM integrations.
  • Develop and maintain applications using C#, .NET 8, ASP.NET Core MVC, CQRS and Domain-Driven Design principles.
  • Oversee Dynamics 365 integrations, workflow services, plugins and supporting business applications, ensuring reliability and maintainability.
  • Drive engineering best practices through code reviews, testing strategies, observability improvements and architectural governance.
  • Mentor developers, support technical investigations and collaborate with architects, product owners and business stakeholders to deliver high-quality solutions.

About You

  • Extensive commercial experience developing enterprise applications using C#, .NET, ASP.NET Core MVC and modern software engineering practices.
  •  Strong expertise in CQRS, Domain-Driven Design, SOLID principles, object-oriented programming and scalable solution architecture.
  • Experience leading the technical delivery of complex projects, making architectural decisions and mentoring development teams.
  • Strong understanding of authentication, authorisation, application security, data protection, caching, concurrency and system resilience.
  • Experience working with Azure DevOps, Git, CI/CD pipelines, automated testing and production support processes.
  • Ability to diagnose complex production issues and communicate technical concepts clearly to both technical and non-technical stakeholders.
  • Desirable experience with Microsoft Dynamics 365, Dataverse, Azure-hosted services, Redis, TypeScript, Application Insights, Serilog and GOV.UK Design System standards.

About Us

FDM is an award-winning global leader in tech and business talent solutions, backed by more than 35 years of industry experience. We have centres across Europe, North America, and Asia-Pacific, and a global workforce of over 2500 employees. FDM has shown exponential growth throughout the years, firmly establishing itself as an award-winning employer, currently listed on the FTSE4Good Index and as a 2026 Financial Times UK ‘Best Employer’. 

Diversity and Inclusion

FDM Group is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, sexual orientation, national origin, age, disability, veteran status or any other status protected by federal, provincial or local laws.

Why join us

  • Career coaching, mentoring and access to upskilling throughout your entire FDM career
  • Assignments with global companies and opportunities to work abroad
  • Opportunity to re-skill and up-skill into new areas, develop non-linear career paths and build a skillset within your field
  • Annual leave and work-place pension
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