Mainframe Developer

Project overview

Mainframe Developer (COBOL / JCL)

Join a long-term project for a leading Danish financial institution, where you will contribute to the maintenance and further development of mission-critical systems built on Mainframe technology and Java-based interface applications. This role offers the opportunity to work on large-scale enterprise solutions that support key business operations in a highly stable and professional environment.

Your Responsibilities

What We're Looking For

• Design, develop, and maintain high-quality software solutions using Mainframe technologies, primarily COBOL and JCL
• Analyze business and technical requirements and implement new functionalities
• Collaborate closely with cross-functional and international teams to deliver reliable solutions
• Ensure application performance, stability, and quality standards are met
• Independently investigate, troubleshoot, and resolve complex technical issues
• Participate in code reviews and contribute to continuous improvement initiatives
• Support the ongoing maintenance and enhancement of existing systems
• Hands-on experience with Mainframe development
• Strong knowledge of COBOL and JCL
• Ability to work independently and take ownership of technical investigations
• Excellent analytical and problem-solving skills
• High attention to detail and commitment to quality
• Strong communication and collaboration skills
• Good command of English for daily communication within an international team

Nice to have

What we offer

• Experience in the banking or financial services sector
• Familiarity with enterprise-scale systems and integrations
• Experience working in Agile environments
• B2B contract
• Remote work

Project details

• Start: flexible
• Remote: remote
• Location: Warszawa, Prosta, PL
• Rate: 150-210 EUR/h