Assembler Developer

Other

Assembler Developer

Other

centrum, Kraków +4 Locations

Transition Technologies PSC

Full-time
B2B, Permanent
Senior
Remote

Tech stack

    English

    B2

    Assembler

    advanced

    Mainframe

    advanced

    z/os

    advanced

Job description

Key Responsibilities:

  • Design, write, test, and optimize Assembler code for mainframe systems.
  • Maintain and enhance legacy Assembler applications to meet business needs.
  • Collaborate with teams to integrate Assembler components with COBOL/Java applications.
  • Optimize system performance using tools like IBM RMF and OMEGAMON.
  • Troubleshoot and resolve complex system issues using advanced debugging tools.
  • Mentor junior developers and lead knowledge-sharing sessions.
  • Contribute to system modernization strategies and decisions.


Requirements

  • Expertise in Assembler (HLASM) programming and mainframe systems (IBM z/OS, MVS, CICS, DB2)
  • Experience with performance tools (IBM Debug Tool, Abend-AID, OMEGAMON)
  • Strong knowledge of memory management and system programming
  • Experience integrating Assembler with COBOL, PL/I, or Java
  • Ability to troubleshoot and resolve production issues
  • 7+ years of experience in Assembler development, with at least 5 years in mainframe systems
  • IBM Certified System Programmer and z/OS Mastery Certifications are a plus
  • Very good command of English


What can we offer

  • Flexible forms of employment and working hours (CoE or B2B)
  • An interesting, challenging job in the dynamically developing Capital Group company
  • Work on innovative projects using modern technologies
  • Direct impact on shaping the image of the Capital Group’s companies on the market
  • Possibility to develop competences in a wide range
  • Attractive salary
  • Stability of employment and a friendly work atmosphere


Published: 14.09.2025

Meet the company

Transition Technologies PSC

Transition Technologies PSC is a dynamic, fully Polish-owned company with over 700 employees across five offices and a coworking space in Wrocław. Generating over 250 million in revenue, we focuse on customer satisfaction, trust, respect, innovation, and agile service. The company offers a supportive, flexible work environment with benefits like health support, professional courses, and team events, emphasizing a human-centered approach and win-win relationships. We specialize in delivering high-value, innovative technology solutions.

Company profile

Assembler Developer

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Assembler Developer

centrum, Kraków

Transition Technologies PSC

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