.NET Technical Lead

One of our clients in Antwerp is preparing for a large-scale modernization of its application architecture. AE plays a key role in this transformation. Based on the existing .NET environment, we are building a new landscape application where Domain Driven Design, clear service boundaries, and event-driven interaction take center stage. This is more than a technical upgrade. It's a structural step towards a mature, future-oriented IT organization — and you will guide its technical development.

AI at AE — what does that mean for you

In the role of Tech Lead at AE, you will drive the adoption of an AI-oriented approach within your team — concretely and by example. This means: actively using Copilot and Claude for code generation and validation, as well as critically reflecting on where AI structurally adds value to the engineering process and where it doesn't. You will help the team learn to make these choices — and contribute to how AE will apply this knowledge more broadly in software development.

What will be your focus?

• You will bear technical responsibility within one or more .NET teams and ensure architectural integrity within the broader modernization project.
• You will translate functional and non-functional requirements into scalable technical solutions, adhering to architectural principles co-developed with AE.
• You will implement Domain Driven Design in practice: clear bounded contexts, consistent service decomposition, and understandable integration patterns.
• You will set the direction for event-driven interaction and messaging (NServiceBus, RabbitMQ) and ensure their correct application within the teams.
• You will guide developers in the areas of design patterns, code quality, testing strategy, and best practices — thereby increasing the team's maturity level.
• You will participate in the development of cloud-native principles and containerization in the context of Kubernetes/OpenShift.
• You will proactively identify technical risks and oversee quality, reliability, and maintainability in an enterprise environment with high security and compliance requirements.

Who are you?

• Proven experience as a Senior .NET Developer or Tech Lead in complex, business-critical environments.
• Deep knowledge of C#, .NET / ASP.NET Core, and experience with microservices and distributed system patterns.
• Significant experience with Domain Driven Design and event-driven architecture — this is not a nice-to-have, but the core of the role.
• A clear architectural vision that you can pragmatically apply to evolving systems.
• A hands-on mentality: you want to stay involved in implementation and code reviews, even in a leading role.
• Clear communication with both technical and non-technical stakeholders; justifying and defending architectural decisions.
• Fluent in Dutch.

Plus:

• Experience with cloud deployments in a Kubernetes or OpenShift environment.
• Familiarity with AI tools in software development (Copilot, Claude, or similar).
• Experience leading teams in technical development.

What does AE offer?

A leading role in a strategic modernization project where your architectural decisions will shape the future of the organization. You will work in a strong team of experienced engineers and architects with whom you can discuss DDD, event-driven architecture, and enterprise design at a high level.

A environment where not only technology but also the professionalization of teams and organizations is central — and in which you play an active role.

More than 400 colleagues in a rapidly growing Belgian organization — head office in Leuven, with offices in Groot-Bijgaarden, Berchem, Ghent, and Hasselt.

Knowledge sharing, mentorship, and personal growth are structurally embedded.

AE — 'Best Belgian Employer 2025' with a Great Place To Work certificate.

Do you see yourself in this role?

Apply today and discover how you can make a difference at AE. Have questions about the vacancy, our recruitment process, or our unique corporate culture? Contact our Recruitment Manager, Martijn, at recruiter contact.

At AE, we value a personal approach and short lines. Whether you visit us in person or connect online, we look forward to meeting you!