Mainframe Developer – ADABASNatural & BS2000 Job ID JP054980
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Job Summary
Mainframe Developer ADABAS/Natural & BS2000
Location: Brussels Belgium Hybrid
Start Date: 15 September 2026
Duration: 73 days
Workload: Full-time 40 hours/week
We are looking for an experienced Mainframe Developer to support the controlled migration of a critical ADABAS/Natural environment on BS2000 to a Linux platform while maintaining reliable parallel operations.
Key Responsibilities
- Develop technical modules for data extraction transformation and replication.
- Analyse existing Natural/ADABAS programs jobs data objects and data flows.
- Establish data synchronisation between BS2000 and Linux environments.
- Develop and execute technical testing and data reconciliation.
- Validate data completeness mappings transformations and identify missing or duplicate records.
- Document technical solutions mappings test results and corrective actions.
Key Requirements
- Strong experience with Natural for BS2000 8.2.7.
- Strong knowledge of ADABAS for Mainframe BS2000 8.2.
- Experience with BS2000 SDF JCL EDT and LMS.
- Knowledge of data replication data transformation and reconciliation.
- Strong analytical and testing mindset.
- Ability to work with legacy systems and limited documentation.
- Active knowledge of Dutch French and English.
- On-site: Minimum 2 days/week in Brussels depending on tasks and team requirements.
