Job Description
Please double check you have the right level of experience and qualifications by reading the full overview of this opportunity below.
For a long-term project in the public sector (EU Digit 2030 KPM project), we are looking for several experienced COBOL Developers (m/f/d) with a focus on mainframe modernization and transformation of existing applications.
Start: July 1, 2026
Duration: 24 months (long-term)
Workload: 100%
Location: Brussels (on-site for approx. 6 months, then remote possible)
Language: English (project language), German/French/Dutch are a plus
Responsibilities
* Further development and maintenance of existing COBOL-based mainframe applications
* Support in the transformation and modernization of the application landscape toward cloud-based platforms
* Close collaboration with the Head of IT Operations and international development teams
* Analysis of existing systems and identification of optimization potential
* Development and customization of programs in the IBM mainframe environment
* Integration and connection of legacy systems to modern architectures
* Conducting code reviews, testing, and error analysis
* Participation in agile projects (Scrum / Agile)
* Support in migrating applications to modern technologies (e.G., Azure-based platforms)
Requirements
* Several years of experience in COBOL development
* Strong knowledge of the IBM mainframe environment
* Experience with SQL and DB2 databases
* Knowledge of Azure DevOps or comparable tools
* Experience with agile working methods (Scrum / Agile)
* Ideally knowledge of VB.NET and/or C#
* Experience xphnsxz working with complex legacy systems
* Analytical thinking and a structured way of working
* Teamwork skills and strong communication abilities in an international environment
Nice to Have
* Experience in the banking or financial sector
* Knowledge of regulatory topics such as Basel III or IFRS 9
* Experience with modernization projects (legacy → cloud / microservices)
If you are interested, we look forward to receiving your profile including your hourly rate and availability.