Senior Software Engineer (Mainframe Development)

Copenhagen, Capital Region
Posted 2 days ago
Software Development

About the role

Job summary

The role involves contributing to the modernization and operational excellence of core transaction processing systems within a Mainframe Services team. The Senior Software Engineer will ensure the reliability, scalability, and security of critical systems supporting billions of transactions.

Qualifications

  • Over 5 years of experience in mainframe development, specifically with IBM z/OS, COBOL, JCL, DB2, and SQL.
  • Strong understanding of z/OS architecture and batch processing.
  • Experience with file transfer gateways and integration layers.
  • Familiarity with Agile methodologies.
  • Ability to work effectively in a global team and communicate across time zones.
  • A passion for modernization and continuous improvement.

Responsibilities

  • Design, develop, and maintain applications based on COBOL, JCL, and DB2 on IBM z/OS.
  • Collaborate with cross-functional teams to integrate mainframe services with distributed systems.
  • Lead modernization initiatives, including migration to event-driven architectures and API enablement.
  • Ensure compliance with established Mainframe Security Technical Standards.
  • Participate in daily change request syncs and operational reviews.
  • Contribute to the Software Engineering Guild’s leveling and performance standards.
  • Participate in on-call duties outside of regular working hours.

Skills

  • Proficiency in COBOL, JCL, DB2, and SQL.
  • Understanding of Agile methodologies.
  • Strong communication skills for global collaboration.

Education

  • Relevant degree or equivalent experience in software engineering or a related field.

Tools

  • IBM z/OS, COBOL, JCL, DB2, SQL.
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