Senior Software Engineer (.NET / React / AWS) - Outside IR35

• Outside IR35

• Initial contract until the end of 2026

• Remote based

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About the Role

Our niche engineering consultancy is looking for a Senior Software Engineer to join their Digital Delivery Service, delivering software solutions across complex cloud-based applications within their Energy clients Commercial and Trading technology landscape.

As Senior .NET Engineer you will work as part of a collaborative engineering service, taking ownership of features and integrations from design through to deployment, while contributing to the continuous improvement of our engineering capability.

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Senior .NET Software Engineer - Key Responsibilities

• Design, develop and maintain modern software applications using .NET (C#)

• Build and support REST APIs, backend services and system integrations.

• Develop Front-End features in React

• Develop cloud-native solutions using AWS and associated technologies.

• Work across the full software development lifecycle, from requirements through to deployment and production support.

• Collaborate with Product Owners, Project Managers, QA Engineers and Solution Architects to deliver high-quality solutions.

• Participate in Agile ceremonies including sprint planning, stand-ups, reviews and retrospectives.

• Contribute to technical design, code reviews and engineering best practices.

• Produce clear technical documentation and support knowledge sharing across the team.

• Support application improvements, defect resolution and technical debt reduction.
  

Essential Skills & Experience

• Strong commercial experience developing applications using C# / .NET.

• Experience building modern front-end applications using React.

• Experience developing RESTful APIs and integration services.

• Experience working with AWS cloud services.

• Experience with SQL databases (PostgreSQL and/or SQL Server).

• Understanding of modern software engineering practices including Git, CI/CD and automated testing.

• Experience working within Agile delivery teams.

• Strong analytical and problem-solving skills.
  

Desirable Skills

• Infrastructure as Code (Terraform).

• Serverless development (AWS Lambda).

• Event-driven architecture and messaging.

• Experience within Energy Trading, Utilities or Financial Services.

• Experience working within a managed service environment.