Full-time

Mid Mainframe IBM z/OS Developer (willingness to learn Assembler)

Posted by Deloitte • Rzeszów, Podkarpackie Voivodeship, Poland

📍 Rzeszów, Podkarpackie Voivodeship 🕒 February 26, 2026

About the Role

Description

& Requirements Who we are looking for
  • Good knowledge of IBM z/OS and mainframe concepts
  • Familiarity with COBOL and/or Assembler (willingness to learn Assembler if COBOL is the primary language)
  • 2-3 years of experience in mainframe development, internships, or academic projects
  • Introductory experience or understanding of DB2
  • Awareness of debugging and performance monitoring concepts
  • Basic understanding of memory management and system-level programming principles
  • Ability to analyze problems and learn troubleshooting techniques
  • Ability to work in international environment and international team (global)
  • Good command of English (written and spoken)
  • Located in Poland
  • Nice to have:

  • Exposure to integrating Assembler or COBOL with other technologies (, PL/I or Java)
  • Knowledge of any other programmi...
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