Medior .NET developer (backend)

In4Matic; Brussel; Sur place; EUR 48 000 - 68 000; Plein temps

Résumé du poste

In4Matic is seeking a medior software developer to contribute to the evolution and maintenance of core business applications. You will focus on back-end development with strong understanding of application architecture, database management, and modern Microsoft technologies.

Responsibilities include developing REST-based services, maintaining existing apps, applying architectural design patterns, and collaborating with analysts, architects, and other developers in an Agile/Scrum environment.

Qualifications

• Strong back-end development with .NET and modern Microsoft technologies.
• Experience with SQL Server 2016+ and Oracle DB 19.
• REST services development and exposure across middleware layers.
• Ability to design and follow SOLID OO principles.

Responsabilités

• Develop and maintain REST-based services across .NET environments.
• Maintain and evolve existing business applications.
• Apply design patterns per architectural guidance.
• Support analysis, troubleshoot incidents, and resolve complex issues.
• Contribute to high-quality, maintainable, and efficient code.

Connaissances

Autonomous delivery

Analytical mindset

Team collaboration

Strong communication

Quality focus

Outils

SQL Server

Oracle Database

REST/Web API

WCF/Web Services

ASP.NET MVC/WebForms

.NET Framework/.NET 8+

Azure DevOps (Git/TFVC)

Entity Framework Core

Description du poste

Our client is looking for a medior software developer to contribute to the evolution and maintenance of core business applications. This opportunity is suited to someone who combines strong back-end development expertise with a solid understanding of application architecture, database management, and modern Microsoft technologies.

Responsibilities

• Develop and maintain REST-based services and application interfaces across modern and legacy .NET environments.
• Work on existing business applications, including corrective and evolutionary maintenance.
• Apply design patterns in line with architectural guidance.
• Support technical analysis, troubleshoot incidents, and help resolve complex issues efficiently.
• Contribute to high-quality code delivery that is maintainable, performant, and aligned with team standards.
• Collaborate with analysts, architects, and other developers in an Agile/Scrum environment.
• Write and execute unit tests as part of the development lifecycle.

Technical Skills

• Strong knowledge of UML and BPMN model interpretation.
• Experience with SQL Server, from version 2016 up to 2025.
• Experience managing Oracle Database 19.
• Hands-on development with REST services in .NET Framework and .NET 8 or newer.
• Experience with ASP.NET WebForms, MVC, and .NET 4.5+.
• Ability to develop in XML and JSON.
• Knowledge of W3C standards.
• Experience with WebAPI, WCF REST, WCF, and web services.
• Practical use of Azure DevOps, including Git and TFVC.
• Experience with Entity Framework Core.
• Knowledge of Redgate tools is an asset.

Profile

• Autonomous in delivering assigned developments.
• Strong analytical mindset with solid problem-solving skills.
• Comfortable working closely with technical and functional stakeholders.
• Good communication skills and a collaborative team spirit.
• Rigor, proactivity, and a strong focus on quality.
• Ability to develop clean, efficient code following SOLID principles and object-oriented best practices.

Practical Information

• The team environment is predominantly French-speaking, so full fluency in French is required.
• Working onsite 3 days per week is expected.
• Language requirements: fluent French, with passive knowledge of Dutch and English.

Contactperson & Reference

• Reference #: INW27724
• Geert Roete
• [e-mail]