Software Developer (Backend .NET Developer)

Wavenet is looking for a Backend Developer with proven experience building robust, data-driven applications in C#/.NET that integrate tightly with Microsoft SQL Server and external APIs.

You’ll be part of a well-established engineering team that has been delivering trusted technology to schools for decades. Our systems handle large-scale data synchronisation and automation across multiple platforms. The core stack is .NET and SQL Server, with some emerging components written in Python as we evolve selected services.
 

What You’ll Be Doing

• Design, build, and maintain .NET backend applications and APIs that synchronise data across systems.
• Develop and consume RESTful APIs, managing authentication, data mapping, and transformation.
• Implement and optimise data access using Dapper, Entity Framework, and direct SQL where appropriate.
• Design efficient SQL Server schemas, queries, and stored procedures.
• Build and maintain message-driven workflows using RabbitMQ.
• Refactor legacy components into modular, maintainable services.
• Troubleshoot and resolve issues across application and data layers.
• Document key system integrations, database models, and API contracts.

Qualifications

• Strong commercial experience with C#/.NET backend development.
• Deep knowledge of SQL Server and relational database design.
• Proven experience building and integrating APIs (internal and third-party).
• Hands-on experience with Dapper, Entity Framework, and T-SQL.
• Familiarity with message queues such as RabbitMQ.
• Strong analytical and debugging skills.
• Clear communication and disciplined documentation habits.

Bonus Skills

• Exposure to Python (e.g. FastAPI, Flask) or willingness to learn.
• Experience with GitLab CI/CD pipelines.
• Understanding of OAuth2/OpenID Connect and secure integration design.
• Experience building or maintaining data-sync or ETL processes at scale.

Additional Information

Additional Information

Here’s a closer look at what we offer:

• Office-Based Working: A collaborative approach with team support, requiring you to work in one of our offices. This role emphasises in-person teamwork and engagement at Wavenet.
• Annual Leave: Start your journey with 25 days of leave, increasing by one day each year up to 28 days—our way of expressing appreciation for your dedication.
• Health & Wellbeing: Your wellbeing is our priority. Benefit from private medical coverage, discounted health plans, virtual GP access, an eye care scheme, and a comprehensive employee assistance program, all facilitated by our Wellbeing Team.
• Wavenet Academy: We are excited to announce the launch of Wavenet Academy, our new user-friendly Learning Management System (LMS). This platform is designed to enhance learning, training, and personal development initiatives across our organisation.

Ready to join the UK’s largest managed service provider? Apply today or contact our friendly Talent Acquisition Team at Natilla.Turner@wavenet.co.uk for more information.

We are committed to building a diverse and inclusive workforce. We welcome applicants from all backgrounds and experiences to apply and bring their unique perspectives to our team.

About the Company

Wavenet is a managed services provider specialising in cybersecurity, communications, and connectivity solutions that evolve alongside our customers' businesses—no matter what the future brings. Since our inception in 2000, we have been dedicated to keeping businesses connected. At Wavenet, we focus not only on immediate solutions but also on future needs.

We continuously stay ahead of the technology curve, ensuring our customers can trust that we are committed to making their business future-ready. Your success is our success. We go above and beyond to deliver exceptional service quality and an unparalleled customer experience, becoming a true extension of your business.

We are dedicated to fulfilling our promise to make your business thrive!