COBOL Developer with Mainframe

Your ITeams Sp. z o.o.; Polska; Hybrid; PLN 120,000 - 180,000; Full time

Benefits offered by this job

Luxmed Gold Extended medical care

Multisport Plus benefit

Job summary

Your ITeams Sp. z o.o. seeks a COBOL Developer with mainframe expertise to support legacy systems.

The role focuses on stabilizing and transitioning legacy applications in a sunset programme, across cross-functional teams. Strong problem-solving and attention to detail are essential for success. You will work in a structured environment with emphasis on collaboration, documentation, and knowledge transfer, while contributing to decommissioning activities and safe migration.

Qualifications

• Strong COBOL knowledge on mainframe platforms.
• Experience with PL/I in production or maintenance context.
• Experience with sunset and decommissioning projects.

Responsibilities

• Maintain and support mainframe applications written in COBOL.
• Contribute to PL/I tasks and resolve issues in mixed-language modules.
• Participate in decommissioning and sunset activities for safe migration or retirement.
• Investigate and resolve production incidents and document findings.

Skills

COBOL

Mainframe

PL/I

Root cause analysis

Education

Technical education or equivalent

Tools

Mainframe tooling

Job description

We are seeking a COBOL Developer with Mainframe expertise to support legacy systems within a structured sunset and decommissioning programme. The person in this role will work in a Mainframe environment, applying strong COBOL knowledge and experience with PL/I to maintain, stabilize and transition legacy applications. This role requires methodical problem-solving, attention to detail and the ability to work collaboratively across technical teams.

Responsibilities

• Maintain and support mainframe applications written in COBOL as part of the legacy environment.
• Contribute to PL/I-related tasks and resolve issues in mixed-language modules.
• Participate in decommissioning and sunset activities, ensuring safe migration or retirement of legacy components.
• Investigate and resolve production incidents, document findings and implement corrective actions.
• Perform code analysis, testing and validation to ensure system stability during transition phases.
• Collaborate with cross-functional teams to plan and execute change requests and release activities.
• Produce clear technical documentation for supported systems and for knowledge transfer activities.

Qualifications

• Very strong knowledge of COBOL and experience working on mainframe platforms.
• Practical experience with PL/I in a production or maintenance context.
• Experience supporting legacy systems and participating in sunset/decommissioning projects.
• Proven ability to troubleshoot production issues and perform root cause analysis.
• Good communication skills and ability to work effectively within technical teams.
• Relevant technical education or equivalent professional experience in mainframe development and support.
• Professional development opportunities and collaboration with experienced engineering teams.
• Unique TEAL culture, relationship- and respect-driven community, non-corporate atmosphere.
• Agile approach and no bureaucracy.
• Outstanding integration trips to various places in Europe for all employees.
• Activities to support your well-being and health.
• Luxmed Gold Extended medical care and Multisport Plus benefit.