Medior .NET Backend Developer

Role Overview

We are looking for a Medior .NET Backend Developer to develop, maintain and improve core business applications in an Agile/Scrum environment. You will work closely with analysts, architects and other developers to deliver reliable and maintainable solutions.

Responsibilities

• Develop backend services and REST/WebAPI using .NET Framework and .NET 8+.
• Develop and maintain applications using ASP.NET WebForms/MVC.
• Design, manage and optimize SQL Server 2016–2025 and Oracle 19+ databases.
• Develop and work with XML and JSON.
• Use Entity Framework Core for data access and complex query optimization.
• Apply design patterns, SOLID principles and development standards.
• Analyse functional requirements and translate them into technical solutions.
• Perform corrective and evolutionary maintenance of existing applications.
• Write and execute unit tests and troubleshoot technical issues.
• Participate in code reviews and continuous improvement initiatives.
• Use Azure DevOps, Git and TFVC.

Requirements

• Strong experience with .NET / .NET Core / .NET 8+.
• Expert knowledge of Entity Framework Core, including complex queries and optimization.
• Experience with ASP.NET, ASP.NET MVC and RESTful APIs.
• Strong knowledge of SQL Server and Oracle.
• Experience with Azure DevOps and Git.
• Good knowledge of SOLID, OOP and design patterns.
• Experience working in Agile/Scrum environments.
• Ability to understand UML and BPMN models.
• Strong analytical, problem-solving and communication skills.
• Autonomous, proactive and quality-oriented.
• Fluent/native-level French is mandatory.

Nice to Have

• Experience with WCF, SOAP/Web Services and W3C standards.
• Practical knowledge of Redgate tools.
• Knowledge of TFVC.

Assignment

• Location: Brussels
• Work model: Hybrid – 3 days onsite per week
• Language: French mandatory