CareerPlan

COBOL/ PL/I Developer

Warszawa, mazowieckieFull-time2026-11-01 → 2026-11-02

Core

Developing and maintaining Mainframe applications supporting critical business processes, focusing on stability, security, and continuity.

Role type

Senior Mainframe application developer (COBOL/PL/I)

Builds

Business applications on IBM Mainframe

Domain

Banking, finance, insurance, healthcare, energy, media

Required skills

COBOL, PL/I, IBM Mainframe environment, production troubleshooting, performance optimization, business requirement analysis

Preferred skills

Git, Gitflow, Angular, Docker, Primaris x TechTalks

Technologies

COBOL, PL/I, IBM Mainframe, Git, Gitflow, Angular, Docker

Responsibilities

Maintain and support Mainframe applications written in COBOL, Participate in PL/I tasks and resolve issues in modules using various programming languages, Develop and maintain business applications based on COBOL technology in Mainframe environment, Implement changes and new features according to business requirements, Analyze existing solutions and identify improvement opportunities, Diagnose and resolve technical issues including production environment errors, Optimize application performance, reliability and security, Collaborate with project team on requirement analysis, planning changes and implementing solutions, Ensure quality and proper functioning of systems supporting key business processes