Assembler Programmer (IBM Mainframe)
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Salary
$128k per year
Location
In office (Białystok, Warsaw, Kielce, Łódź)
Employment
Contractor
First seen by Alion on Oct 23, 2026.
Overview
Company
Impact
Profile match
Transition Technologies PSC is a Polish IT services company that supports industrial and manufacturing firms with digital transformation. It implements product lifecycle management, Internet of Things, cloud and augmented reality solutions, largely built on PTC platforms such as Windchill and ThingWorx, and develops custom software for clients in Europe and North America. The company is listed on the Warsaw Stock Exchange and is headquartered in Lodz, Poland.
We're seeking an experienced Assembler Programmer to support and modernize business-critical IBM Mainframe systems in an enterprise environment.
Zakres obowiązków
- 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.
Wymagania
- 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
Tech stack
- Assembler
- HLASM
- COBOL
- Java
- IBM z/OS
- MVS
- CICS
- DB2
- IBM Certified System Programmer
- IBM z/OS certifications
- Mainframe modernization project
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