СOBOL/Mainframe Engineer IRC300503

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

Benefits offered by this job

Empowering Projects

Empowering Growth

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

Description

The engagement supports a maintenance assessment and advisory for a legacy mainframe environment built primarily on COBOL, running mission‑critical batch and online workloads. The objective is to establish a fact‑based understanding of the current application estate and its support model, and to define a scoped, low‑risk maintenance pilot as the basis for a potential longer‑term managed services engagement.

The initial advisory phase is an assessment structured in three stages: a scope‑alignment workshop to agree services, ownership, and boundaries; a current‑state assessment of the code estate, data, batch/online flows, operations, and ticket history to establish baselines and pain points; and a pilot‑identification stage to prioritise candidate use cases and define objectives and success metrics. The phase is diagnostic in nature — it covers evaluation, characterization, and effort estimation only, with no code remediation or production changes performed during assessment. Success depends heavily on timely access to client subject‑matter experts and to the target environment.

Requirements

• 4+ years of hands‑on COBOL maintenance and support experience 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.

Job 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.

What we offer

Empowering Projects: With 500+ clients spanning diverse industries and domains, we provide an exciting opportunity to contribute to groundbreaking projects that leverage cutting‑edge technologies. As a team, we engineer digital products that positively impact people’s lives.

Empowering Growth: We foster a culture of continuous learning and professional development. Our dedication is to provide timely and comprehensive assistance for every consultant through our dedicated Learning & Development team, ensuring their continuous growth and success.

DE&I Matters: At GlobalLogic, we deeply value and embrace diversity. We are dedicated to providing equal opportunities for all individuals, fostering an inclusive and empowering work environment.

Career Development: Our corporate culture places a strong emphasis on career development, offering abundant opportunities for growth. Regular interactions with our teams ensure their engagement, motivation, and recognition. We empower our team members to pursue their career goals with confidence and enthusiasm.

Comprehensive Benefits: In addition to equitable compensation, we provide a comprehensive benefits package that prioritises the overall well‑being of our consultants. We genuinely care about their health and strive to create a positive work environment.

Flexible Opportunities: At GlobalLogic, we prioritise work‑life balance by offering flexible opportunities tailored to your lifestyle. Explore relocation and rotation options for diverse cultural and professional experiences in different countries with our company.

About GlobalLogic

GlobalLogic, a Hitachi Group Company, is a trusted digital engineering partner to the world’s largest and most forward‑thinking companies. Since 2000, we’ve been at the forefront of the digital revolution – helping create some of the most innovative and widely used digital products and experiences. Today we continue to collaborate with clients in transforming businesses and redefining industries through intelligent products, platforms, and services.