Senior Mainframe IT Consultant – COBOL, z/OS & Banking

Netcompany1; Warszawa; On-site; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Scandinavian work environment

Medical Insurance

Multisport Card

Career development program for each

International cooperation with Denmark

Office locations in Warsaw

Job summary

Netcompany Banking Services is looking for a Senior IT Consultant (Mainframe) to join a mission-critical investment system team in Warsaw. You will own maintenance and enhancements for the FED system and drive performance improvements.

You will collaborate across Denmark and Poland, contributing to complex migrations and expanding the system portfolio as part of a dynamic, trust-driven team. Strong COBOL, z/OS, and DB2 skills are required along with excellent English communication.

Qualifications

• Bachelor's or Master's degree in IT, mathematics, physics, or related field.
• 5+ years of mainframe development experience.
• Minimum 3 years COBOL development.
• Fluent in written and spoken English.

Responsibilities

• Take ownership of maintaining and enhancing the FED system, ensuring reliability, performance, and continuous improvement.
• Work across analysis, design, development, and definition of technical requirements.
• Collaborate daily with colleagues and stakeholders across Denmark and Poland, working both independently and as part of a close team built on openness, collaboration, and delegated responsibility.
• Play a key part in the project to replace the FED system, contributing to a complex system transition.
• Help the team expand to support additional systems, broadening your technical portfolio and developing your career beyond the FED system.

Skills

COBOL

z/OS

JCL

TSO/ISPF

Batch processing

CICS

DB2

PL/I

WebSphere on z/OS

English (written and spoken)

Education

Bachelor's or Master's degree in IT, mathematics, physics, or related field

Tools

WebSphere on z/OS

Job description

Netcompany Banking Services is looking for a Senior IT Consultant (Mainframe) to join a mission-critical investment system team in Warsaw. You will own maintenance and enhancements for the FED system and drive performance improvements.

You will collaborate across Denmark and Poland, contributing to complex migrations and expanding the system portfolio as part of a dynamic, trust-driven team. Strong COBOL, z/OS, and DB2 skills are required along with excellent English communication.