Mainframe Developer – ADABAS/Natural & BS2000 Job ID: JP054980

ITproposal; Brussel; Hybride; EUR 60 000 - 90 000; Plein temps

Résumé du poste

ITproposal in Brussels is seeking an experienced Mainframe Developer to support migration of ADABAS/Natural on BS2000 to Linux while keeping parallel operations reliable.

You will analyze Natural/ADABAS programs, develop data extraction modules, ensure data synchronization, and document mappings and test results. This role is hybrid with on-site presence required in Brussels. Strong knowledge of BS2000, JCL, and data reconciliation is essential, plus fluency in Dutch, French, or English.

Qualifications

• Experience with Natural for BS2000 8.2.7+ is required.
• 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.
• Ability to work with legacy systems and limited documentation.
• On-site: Brussels 2 days/week, depending on tasks and team requirements.

Responsabilités

• Develop 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.

Connaissances

Natural for BS2000

ADABAS

BS2000

JCL

EDT

LMS

Data replication

Data transformation

Data reconciliation

Data analysis

Testing mindset

Legacy systems

Dutch/French/English

Outils

SDF

EDT

LMS

Description du poste

About the job Mainframe Developer – ADABAS/Natural & BS2000 Job ID: JP054980

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.