Senior Mainframe Consultant — COBOL, z/OS & Banking Ops

Netcompany; Warszawa; On-site; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Medical Insurance

Multisport Card

Career development program for each 3

International cooperation with Denmark

Job summary

Netcompany Banking Services in Warsaw seeks a Senior IT Consultant (Mainframe) to maintain and enhance the mission‑critical FED system, ensuring reliability and performance. You will work across analysis, design, and technical requirements, collaborating with Danish and Polish colleagues in a close, open team.

The role requires 5+ years on mainframe, COBOL, z/OS, and CICS/DB2, with English fluency. An opportunity to contribute to major system replacements and expand to additional platforms is

Qualifications

• Bachelor's or Master's degree in IT, mathematics, physics, or a related field.
• 5+ years of relevant work experience as a mainframe developer.
• Minimum 3 years of COBOL programming and development.
• Solid experience with z/OS, including JCL, TSO/ISPF, and batch processing.
• Experience and proficiency with CICS and DB2 (SQL) on z/OS.
• Fluent in written and spoken English.

Responsibilities

• Take ownership of maintaining and enhancing the FED system, ensuring reliability and performance.
• Work across analysis, design, development, and technical requirements.
• Collaborate daily with colleagues across Denmark and Poland, in a close team.
• Play a key part in the project to replace the FED system and perform system transitions.
• Help the team expand to support additional systems and develop your career.
• On-call duty in a rotating schedule to support critical banking systems.

Skills

Mainframe development

COBOL

z/OS, JCL, TSO/ISPF

CICS and DB2

English fluency

5+ years experience

Education

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

Tools

JCL

TSO/ISPF

Batch processing

WebSphere on z/OS

PL/I

Job description

Netcompany Banking Services in Warsaw seeks a Senior IT Consultant (Mainframe) to maintain and enhance the mission‑critical FED system, ensuring reliability and performance. You will work across analysis, design, and technical requirements, collaborating with Danish and Polish colleagues in a close, open team.

The role requires 5+ years on mainframe, COBOL, z/OS, and CICS/DB2, with English fluency. An opportunity to contribute to major system replacements and expand to additional platforms is