You will work in a mission-critical technology environment supporting large-scale energy infrastructure systems that ensure the reliability and stability of electricity supply.
The applications you help build and maintain are part of a complex, high-availability landscape where quality, correctness, and continuity are essential.
You will join an established development team composed of internal staff and external specialists, contributing to the long-term evolution of existing systems rather than greenfield development. This role suits experienced developers who value impact, accountability, and working on systems with real-world consequences.
Your responsibilities include
- Developing and maintaining .NET applications used in critical operational contexts.
- Delivering high-quality, maintainable code in line with defined development standards.
- Working with both relational and NoSQL data stores.
- Contributing to backend services and message-based integrations.
- Collaborating with team members to analyse requirements and implement solutions.
- Ensuring reliability, performance, and robustness of delivered functionality.
- Participating in code reviews and quality control activities.
- Supporting the ongoing evolution and maintenance of existing applications.
- Taking ownership of assigned tasks and following them through to completion.
- Communicating clearly with technical and non-technical stakeholders.
What are we looking for?
- You have proven experience as a Senior .NET Developer.
- You have strong hands-on experience with .NET 8.
- You have experience with Entity Framework Core.
- You have hands-on experience with WPF.
- You are proficient in SQL Server.
- You have experience working with MongoDB.
- You have experience with RabbitMQ or similar messaging systems.
- You are comfortable delivering code in environments with strict quality standards.
- You are fluent in French or Dutch, with a passive understanding of the other language, and have a very good level of English.
Nice-to-Have
- Experience working with micro-services architectures.
- Experience in high-availability or infrastructure-related systems.
- Prior exposure to regulated or mission-critical environments.
What do we offer?
Location: Brussels (Belgium)
Work mode: Hybrid
Onsite presence: Minimum 2 days per week onsite
Contract: Freelance or Permanent
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