Mainframe Developer

DATAGROUP

Mainframe Developer ensuring operational stability of application systems at DATAGROUP, contributing to continuous system improvement and collaboration with analysts.

Posted 5/10/2026full-timeHamburg • 🇩🇪 GermanyMid-LevelSeniorWebsite

Tech Stack

Tools & technologies

SQL

About the role

Key responsibilities & impact

Ensure the smooth operation of the supported application systems
Handle service requests and incidents
Analyze disruptions and implement long-term solutions
Contribute ideas for system improvements and optimization
Continuously develop systems based on requirements
Work closely with other mainframe system engineers and business analysts
Create detailed requirements, specifications, and program code
Regularly test program code and maintain thorough documentation

Requirements

What you’ll need

Degree in Computer Science, Information Systems, or a comparable qualification
Experience with software tools such as IBM ISPF, IBM IMS/DC, IBM RACF, IBM TWS/OPC, IBM RD/z, Compuware FileAid, Compuware Xpediter, or Atlassian JIRA
Practical hands-on knowledge of IBM Job Control Language (JCL), COBOL, and SQL
Ideally experience with IBM REXX and PL/1 (not mandatory)
Knowledge of IBM Db2 on the mainframe
Familiarity with z/OS and Windows operating systems
IT experience, ideally within the insurance sector
Strong teamwork and communication skills
Structured, analytical, and independent working style
Very good German language skills, both written and spoken (level C1)

Benefits

Comp & perks

Open and cooperative corporate culture
Trust-based working environment
Flat hierarchies and short decision-making paths
Individual training and development opportunities
Varied tasks
Flexible working hours
Attractive, modern work environment
Ergonomic chairs and height-adjustable desks
Comprehensive social benefits
Company pension plan
Bike leasing (JobRad)
Corporate benefits
Various sports activities
Regular staff parties and company events
Option for mobile/remote working

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

IBM Job Control Language (JCL)COBOLSQLIBM REXXPL/1IBM Db2mainframe systemsprogram code testingsystem optimizationrequirements analysis

Soft Skills

teamworkcommunicationanalytical skillsindependent working style

Certifications

Degree in Computer ScienceDegree in Information Systems