Legacy COBOL/Mainframe Assessment Specialist

GlobalLogic; Kraków; On-site; PLN 120,000 - 180,000; Full time

Benefits offered by this job

Empowering Projects

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DE&I Matters

Career Development

Comprehensive Benefits

Flexible Opportunities

Job summary

GlobalLogic in Kraków seeks an experienced professional to support a maintenance assessment and advisory for a legacy mainframe environment built primarily on COBOL. The focus is to understand the current estate and define a low-risk maintenance pilot to inform a potential longer-term engagement.

You will document COBOL/JCL/batch flows, perform static and dependency analyses, and collaborate with the architect to produce structured artifacts.

Qualifications

• 4+ years hands-on COBOL maintenance in a z/OS environment.
• Able to read, trace, and document unfamiliar legacy COBOL, JCL, and batch flows without complete documentation.
• Experience extracting inventories and running static or dependency analysis across a codebase.
• Comfortable working under an architect’s direction and producing structured, reusable analysis artifacts.
• Detail-oriented and able to work to a tight assessment timeline.

Responsibilities

• Extract and catalogue the application, program, copybook, JCL, and data inventory.
• Perform and validate static and dependency analysis and generate code metrics across the estate.
• Trace and document batch and online program flows and their data touchpoints.
• Review AI-generated inventories and dependency maps and correct errors against source.
• Flag anomalies, dead code, and high-risk or high-complexity areas.
• Support the architect in validating findings against client SME input.

Skills

COBOL maintenance

z/OS

JCL

Code tracing

Documentation

Job description

GlobalLogic in Kraków seeks an experienced professional to support a maintenance assessment and advisory for a legacy mainframe environment built primarily on COBOL. The focus is to understand the current estate and define a low-risk maintenance pilot to inform a potential longer-term engagement.

You will document COBOL/JCL/batch flows, perform static and dependency analyses, and collaborate with the architect to produce structured artifacts.