Senior Full Stack .NET Engineer (React / APIs)

Salary: £68,000 - 87,000 per year

Requirements:

• Strong experience with C# and .NET (ASP.NET Core)
• Proven experience building web applications and REST APIs
• Experience with React (Angular or Vue also considered)
• Solid understanding of full stack development principles
• Experience with cloud platforms, with Azure preferred
• Exposure to microservices and distributed systems
• Strong database experience, such as SQL Server or equivalent
• Familiarity with CI/CD and DevOps practices
• Strong problem-solving and debugging skills
• Excellent communication and collaboration skills
• Ability to manage priorities and work across multiple projects
• Experience working on integration-heavy platforms is desirable
• Experience supporting production systems with high availability requirements is desirable
• Previous mentoring or leadership experience is desirable

Responsibilities:

• Define system objectives by analysing user requirements and business needs
• Design and develop web applications using C#/.NET (ASP.NET Core) and modern frontend frameworks
• Build and maintain RESTful APIs and integration services
• Contribute to architectural decisions, evaluating technical solutions and trade-offs
• Collaborate with cross-functional teams to enable system interoperability
• Troubleshoot development and production issues across multiple environments
• Support high-availability systems with ongoing maintenance and monitoring
• Participate in Agile development processes and team discussions
• Maintain high standards through code reviews, testing, and continuous improvement
• Provide guidance, mentoring, and technical support to other developers
• Create documentation and tools to support system usage and maintenance
• Stay up to date with emerging technologies and best practices

Technologies:

• ASP.NET
• Angular
• Azure
• C#
• CI/CD
• Cloud
• DevOps
• Frontend
• Support
• REST
• React
• SQL
• Vue
• Web
• microservices
• Fullstack

More:

We are a product-focused team working on a complex, integration-focused platform that supports real-time operational workflows. We offer a remote-first working model in the UK, with the option to work from Portsmouth one day twice per month or monthly. The role is highly collaborative and gives you the opportunity to shape system architecture, deliver robust solutions, and support critical production systems.

last updated 31 week of 2026