Senior Mainframe Associate
Ready to Lead and manage critical enterprise systems with IMS & DB2 expertise.
Location: Denmark (Copenhagen & Ballerup)
Remote: Onsite
Workload: Full-time (Permanent)
About the role
Join a high-impact team driving mission-critical mainframe systems for a leading financial environment. This role offers the chance to work with advanced IMS, DB2, COBOL, PL/1, and CICS technologies, shaping the flow of real-time and batch transactions while solving complex data challenges. If you thrive on optimizing performance, ensuring data integrity, and working on high-stakes systems, this role is for you.
What you'll do
Enhance and maintain the IMS-to-DB2 bridge for smooth data flow
Translate IMS log updates into actionable DB2 SQL commands
Ensure consistency and integrity across IMS and DB2 systems
Optimize PL/1 programs for data transformations
Maintain and evolve IMS data models in real-time environments
Implement transaction load balancing strategies across IMS tables
Work with DBAs to plan storage and monitor resource usage
Update COBOL apps via IMS APIs for performance improvements
Manage MQ messaging for real-time processing and inter-system communication
Troubleshoot and resolve mainframe performance issues
Who you are
Expert in IMS, DB2, CICS, PL/1, COBOL, JCL, and MQ
Strong technical knowledge of IMS at system and application levels
Hands-on IMS DBA experience, including planning storage for new tables and monitoring existing table usage
Skilled in analyzing IMS logs and enabling efficient data propagation
Experienced in PL/1 and COBOL program optimization
Familiar with mainframe administration, including JCL, VSAM, Z/OS, DB2, and Autosys
Ability to model data, balance loads, and optimize transaction performance
Exposure to card and payment systems is a plus
Analytical, solution-oriented, and excellent communicator
Collaborative team player who thrives in high-stakes environments
Sperton Global
This assignment is managed by Sperton, responsible for sourcing, screening, and candidate evaluation. We manage the hiring process professionally on behalf of our customer.
- Department
- Information Technology
- Locations
- Copenhagen, Denmark
- Employment type
- Full-time
- Job location
- Copenhagen & Ballerup, Denmark
- Employment Level | Seniority
- Senior Level
Workplace & Culture at Sperton
At Sperton, we believe that great results come from great people.
Our culture is built on trust, collaboration, and a shared passion for delivering quality in everything we do.
We are a Norwegian-owned international company with colleagues across Europe, Asia, and the USA, working together seamlessly across time zones and cultures. Our teams are diverse, yet united by the same goal — to connect people and companies in meaningful ways.
We value openness, initiative, and continuous learning. Everyone at Sperton is encouraged to take ownership, share ideas, and challenge existing ways of working to make our solutions even better.
Even though we operate globally, our approach is personal. We take pride in creating a supportive and inclusive environment where people feel heard, respected, and motivated to grow — both professionally and personally.
