.NET Developer

About the Position

Join Smile Group as a .NET Developer in Brussels, where you'll design and develop high-performance web applications using C# and .NET Core. Passionate about tech, digital, and innovation? Join the 1,800 employees at Smile, the European leader in open-source integration, spread across 20 agencies in 9 countries. Collaborative spirit and knowledge sharing are at the heart of our DNA. Our experts push the boundaries of open source every day to build a smarter, more efficient, and more responsible digital world. Here, we don't just follow trends, we create them! 🌟 Join Smile in Brussels and take part in projects that truly matter! 🏆

Responsibilities

As a .NET Developer, your mission is to design, develop, and optimize robust and scalable custom solutions using the modern Microsoft.NET ecosystem. On a daily basis, you will:

• Design and develop complex, high-performance web applications using C# and the .NET Core /.NET 8 framework.
• Build and integrate secure, robust RESTful APIs and microservices.
• Collaborate closely with front-end developers, product owners, and architects to ensure seamless integration and an optimal user experience.
• Ensure code quality by writing unit and integration tests, and actively participating in code reviews to maintain high standards.
• Optimize application performance, manage databases (SQL), and troubleshoot technical issues in diverse environments.
• Participate in Agile ceremonies (Scrum) and contribute to the continuous improvement of our development and deployment practices (CI/CD).

Requirements

• Holding a degree in IT, computer science, or engineering.
• At least 3 years of hands-on experience as a .NET Developer, ideally within an Agile environment.
• Strong mastery of C#, ASP.NET Core, and related ecosystem tools (Entity Framework, LINQ).
• Comfortable with relational databases (SQL Server, PostgreSQL) and a good understanding of cloud environments (Azure is a strong plus).
• Familiar with modern development practices and passionate about clean code, applying SOLID principles, and design patterns rigorously.
• Interest in or basic knowledge of modern front-end JavaScript frameworks (Angular, React, or Vue.js).

Nice to Have

• Team spirit, curiosity, and fluency in English (French or Dutch is a great asset in Brussels).

We Offer

Our proximity management by peers fosters dialogue and the implementation of a tailored career path. Because the digital sector is in constant motion, Smile is committed to making you an expert in your field, thanks to a comprehensive training offer: access to an e-learning platform, financing of certifications, knowledge-sharing tools...

Your year will be animated by group and agency events: annual convention, participation in trade fairs, summer party, formal & informal afterworks.

About the Company

Smile Group is the European leader in open-source integration, spread across 20 agencies in 9 countries. Our experts push the boundaries of open source every day to build a smarter, more efficient, and more responsible digital world. Here, we don't just follow trends, we create them! 🌟 Join Smile in Brussels and take part in projects that truly matter! 🏆

The Next Steps 🚀

• First contact: A phone call to discuss your aspirations and what we can offer you.
• Meeting: An opportunity to get to know each other and explore your professional background.
• Business interview: A discussion with one of our experts to assess your skills and define your goals.

Welcome to the team! And if it's a match between us, we will be delighted to welcome you for an exciting adventure. So, ready to join the team? 😉