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Cobol Entwickler (w/m/d) – Mainframe, Schnittstellen & Modernisierung

Hamburg, HAMBURG🌐 Remote💼 Full-time🗓 2026-05-26 → 2026-09-26

Core

Develop, maintain, and modernize critical COBOL applications on IBM mainframes (z/OS), handling both batch and online processing.

Role type

Senior IC Mainframe COBOL Developer

Builds

Stable, scalable legacy banking/insurance systems and modernized interfaces

Domain

Banking/Insurance, Mainframe (IBM z/OS)

Deliverable

production ML models | product features | infrastructure

Required skills

COBOL programming, Mainframe z/OS environment, DB2/SQL, VSAM, JCL, TSO, Batch processing, Online processing, System maintenance, Performance optimization

Preferred skills

CICS, IMS, API/Interface development, CI/CD tooling, Test automation, Code review, Mentoring

Technologies

IBM z/OS, DB2, VSAM, JCL, TSO, CICS, IMS

Responsibilities

Implementing and testing COBOL modules, optimizing system performance and stability, conducting technical analysis of requirements, coaching junior developers, participating in modernization projects

Seniority

Senior, hands-on IC

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