Java and COBOL Developer (Mainframe Testing Software)

Quick Facts

• Role: Java and COBOL Developer for testing software and mainframe systems

• Work mode: Hybrid

• Collaboration: Decentralized squad; connect modern software with HOST architecture

Description

You will provide technical and administrative support for mainframe-based testing software and ensure smooth operation through updates and maintenance. The role includes mainframe development and optimization (COBOL, DB2) and coordinating release workflows between decentralized Java systems and the HOST database landscape, while meeting regulatory requirements and ensuring software quality.

Responsibilities

• Technically and administratively support the testing software systems Kolumbus DRG and ZABAS, as well as the CSV splitter

• Ensure reliable operations, updates, and maintenance of the applications

• Support the upkeep, further development, and support of the KV performance service in the HOST environment

• Design, program, and optimize interfaces and data structures on the mainframe

• Plan and coordinate releases between decentralized Java systems and the HOST data landscape

• Ensure compliance with regulatory requirements such as DORA and VAIT regarding data protection and data security

• Secure software quality through structured testing procedures

Requirements

• Degree in (Business) Informatics or comparable qualification (e.g., IT specialist) with solid experience in software development

• In-depth mainframe development knowledge with COBOL, including experience with querying and populating DB2-HOST databases

• Strong backend programming skills in Java; ideally some exposure to JavaScript or Angular

• First experience with modern DevOps structures and container platforms like Docker and Kubernetes, or strong interest in developing these skills

• Structured, organized approach to coordinating complex interfaces and release processes

• Communication skills and fluent German

• Experience with agile ways of working (Scrum) and a strong quality and compliance mindset; ideally exposure to DORA and VAIT

Benefits

• Funded personal and professional development through internal and external training

• Flexible working hours and the possibility to work remotely

• Modern workplace with ergonomic equipment

• Employer savings plan benefits (vermögenswirksame Leistungen)

• Corporate health management

• Employee discounts