Application Support Engineer (Mainframe)

Jit Team is a Polish company employing over 700 experienced experts, creating specialized teams for clients worldwide. They have a long-term partnership with a leading financial group in the Nordic countries, delivering over 60 projects with more than 200 personnel involved. The client emphasizes Scandinavian culture, work-life balance, and international teams with daily English language use.

• Strong hands-on experience with IBM Mainframe (z/OS) in an operational environment
• Solid knowledge of DB2 including data analysis and querying
• Experience with JCL and workload automation tools (e.g., TWS/OPC)
• Ability to analyze and work with mainframe files including hexadecimal data
• Understanding of application maintenance, incident and problem management processes
• Familiarity with Agile/SAFe ways of working
• Knowledge of payments domain (SWIFT, MT940/950, camt.052/053, transactions, statements)
• Experience with system monitoring and production support

Nice to have:

• Linux (Red Hat)
• Oracle
• XML

• Supporting and maintaining mainframe-based applications in a production environment
• Handling incidents, problems, and service requests in line with SLA and quality standards
• Participating in application lifecycle management and continuous improvements
• Collaborating with stakeholders to deliver changes and enhancements
• Contributing to backlog refinement and Agile ceremonies (SAFe)
• Driving assigned parts of change initiatives and ensuring sustainable solutions
• Improving system stability, performance, and reliability
• Ensuring applications meet business requirements and service level expectations