Mainframe COBOL Estate Lead - Assessment & Strategy

GlobalLogic; Kraków; On-site; PLN 180,000 - 280,000; Full time

Job summary

GlobalLogic is engaged to perform a maintenance assessment and advisory for a legacy mainframe COBOL estate, with a focus on discovery, characterization, and a pilot maintenance approach. The engagement emphasizes three-stage current-state analysis and a diagnostic phase, leveraging subject-matter experts and client access to environments.

You will lead technical discovery and present risks and recommendations.

Qualifications

• Deep mainframe experience on COBOL-based estates.
• Hands-on experience with Hitachi VOS-family mainframes and the XDM/DCCM3 and XDM/RD stack (or demonstrable deep equivalence from IBM CICS/IMS-DC and DB2, with willingness to ramp on the Hitachi dialect).
• Proven ability to characterize a multi-million-LOC estate across online, batch, data, and integration tiers and translate it into complexity and criticality assessments.
• Experience defining maintenance or support operating models (roles, SLAs, runbooks, escalation) for legacy systems.
• Able to critically validate AI-generated analysis against source code and SME input before it informs decisions.
• Able to lead technical discovery and deep-dives directly with client subject-matter experts.
• Strong stakeholder-facing communication, including presenting findings and recommendations to senior audiences.

Responsibilities

• Own the technical discovery and characterization of the legacy mainframe COBOL estate.
• Produce complexity, criticality, and maintainability assessments of applications, batch flows, and integrations.
• Map application, data, and batch dependencies to identify risks and single points of failure.
• Oversee AI-assisted analysis and validate machine-generated findings against source and SME input before use.
• Define the proposed target maintenance operating model and support approach.
• Scope and prioritize candidate use cases for a subsequent maintenance pilot.
• Direct the work of the team and consolidate outputs into architectural findings.
• Present assessment outcomes, risks, and recommendations to client and internal stakeholders.

Skills

COBOL mainframes

Hitachi VOS/XDM3

Code estate characterization

Maintenance operating models

AI analysis validation

Technical discovery leadership

Stakeholder communication

Tools

XDM/DCCM3

CICS/IMS-DC

DB2

Job description

GlobalLogic is engaged to perform a maintenance assessment and advisory for a legacy mainframe COBOL estate, with a focus on discovery, characterization, and a pilot maintenance approach. The engagement emphasizes three-stage current-state analysis and a diagnostic phase, leveraging subject-matter experts and client access to environments.

You will lead technical discovery and present risks and recommendations.