Software Developer (.NET / Data Integration) (m/f/d)
Contract
Brussels, Belgium
27.04.2026
An international organisation is strengthening its IT delivery team to modernise and optimise existing data flows and applications.
The role is part of a multi‑phase transformation programme aimed at improving data processing, reliability and integration with core platforms.
The developer will work closely with functional and technical stakeholders in an Agile environment.
Responsibilities:
· Develop and maintain backend components and data workflows based on functional specifications
· Participate in the modernisation and replacement of existing data flows toward a target architecture
· Design and implement APIs and data integration solutions
· Ensure code quality through best practices such as clean code and design patterns
· Collaborate with business analysts and other developers in an Agile setup
· Contribute to testing, documentation and continuous improvement of solutions
Qualifications and Skills:
Halian Group
With over 28 years of experience, we have come to understand that innovation is the only way to provide agile, practical solutions that transform businesses and careers.
Our resourcing and smart services help you to realize tomorrow’s potential. Discover the amazing things possible when you bring the right people and the right technologies together.
At Halian, we recognize that diversity, equity, and inclusion (DEI) are essential to building high-performing teams for our clients. We are committed to connecting organizations with top talent from all backgrounds, ensuring that every individual feels valued, respected, and empowered to contribute their unique perspectives. We encourage applications from all qualified candidates, regardless of race, gender, disability, or any other characteristic that makes them unique. By fostering diverse and inclusive workplaces, we help our clients drive innovation, enhance collaboration, and better reflect the communities they serve.
The role is part of a multi‑phase transformation programme aimed at improving data processing, reliability and integration with core platforms.
The developer will work closely with functional and technical stakeholders in an Agile environment.
Responsibilities:
· Develop and maintain backend components and data workflows based on functional specifications
· Participate in the modernisation and replacement of existing data flows toward a target architecture
· Design and implement APIs and data integration solutions
· Ensure code quality through best practices such as clean code and design patterns
· Collaborate with business analysts and other developers in an Agile setup
· Contribute to testing, documentation and continuous improvement of solutions
Qualifications and Skills:
- Strong experience with .NET / C# development
- Solid background in SQL databases and data processing
- Experience with ETL / data integration tools
- Good understanding of API development (REST)
- Familiarity with Agile methodologies and version control tools
- Autonomous, team‑oriented, structured and analytical mindset
Halian Group
With over 28 years of experience, we have come to understand that innovation is the only way to provide agile, practical solutions that transform businesses and careers.
Our resourcing and smart services help you to realize tomorrow’s potential. Discover the amazing things possible when you bring the right people and the right technologies together.
At Halian, we recognize that diversity, equity, and inclusion (DEI) are essential to building high-performing teams for our clients. We are committed to connecting organizations with top talent from all backgrounds, ensuring that every individual feels valued, respected, and empowered to contribute their unique perspectives. We encourage applications from all qualified candidates, regardless of race, gender, disability, or any other characteristic that makes them unique. By fostering diverse and inclusive workplaces, we help our clients drive innovation, enhance collaboration, and better reflect the communities they serve.