Hybrid Mainframe PL/I Analyst & Developer

NRB; Brussel; Hybrid; EUR 70,000 - 90,000; Full time

Benefits offered by this job

Permanent contract or freelance stat

Company car / mobility budget

Insurance coverage

Meal vouchers

Eco-vouchers

Performance bonuses

Job summary

NRB is seeking an Analyst Developer PL/I for its Mainframe team in Belgium. You will analyze, develop and maintain legacy Mainframe applications, focusing on reliability, performance and long-term maintainability.

The role combines technical analysis, hands-on PL/I development, and production support within a large organisation. You will collaborate with analysts and business teams, work in a hybrid model, and contribute to stability and evolution of critical systems while leveraging IBM z/OS,

Qualifications

• Proven PL/I/Mainframe development experience.
• Strong PL/I knowledge in a professional Mainframe environment.
• Good knowledge of IBM Mainframe and z/OS.
• Experience with DB2 and SQL.
• Knowledge of JCL and batch processing.
• Experience in technical analysis and development.
• Ability to analyze legacy code with limited docs.
• Experience in corrective and evolutionary maintenance.
• Testing, debugging and support processes.
• TSO/ISPF experience expected.
• CICS and IMS/DL/I assets.
• BMP or transactional processing is an asset.
• Schedulers such as TWS/Control‑M are assets.
• Production support and ABEND troubleshooting experience appreciated.
• Experience in banking/insurance/healthcare or other legacy environments is an asset.
• Ability to work independently across lifecycle.
• Strong analytical mindset, accuracy and problem solving.
• Good communication and collaboration.

Responsibilities

• Perform technical analysis of Mainframe applications and business requirements.
• Develop, modify and maintain PL/I applications.
• Work on corrective and evolutionary maintenance of critical apps.
• Analyze existing code, dependencies and application flows.
• Develop and maintain batch and transactional processing.
• Work with DB2 databases and embedded SQL.
• Create, modify and maintain JCL jobs and batch chains.
• Work with IMS/DL/I and CICS environments where applicable.
• Conduct unit, integration and non-regression testing.
• Investigate production incidents and ABENDs.
• Support deployment and production activities.
• Contribute to performance optimization of Mainframe programs and DB access.
• Collaborate with analysts, developers, production teams and stakeholders.
• Document technical analyses, developments, fixes and changes.
• Contribute to long-term stability of legacy systems.

Skills

PL/I development

Mainframe development

Analytical mindset

Communication skills

Independent worker

English proficiency

French or Dutch

Education

Bachelor's/Master's in CS

Tools

DB2

SQL

JCL

TSO/ISPF

CICS

IMS/DL/I

BMP

Job description

NRB is seeking an Analyst Developer PL/I for its Mainframe team in Belgium. You will analyze, develop and maintain legacy Mainframe applications, focusing on reliability, performance and long-term maintainability.

The role combines technical analysis, hands-on PL/I development, and production support within a large organisation. You will collaborate with analysts and business teams, work in a hybrid model, and contribute to stability and evolution of critical systems while leveraging IBM z/OS,