As a Senior IBM Mainframe Developer you will join a team of experienced specialists responsible for the development and maintenance of mission-critical systems on IBM Mainframe technologies. They will design, develop and enhance complex business applications that support daily operations for clients in banking, insurance and other highly regulated industries. The role requires analysis of business requirements, implementation of solutions and optimisation of applications to ensure reliability, performance and security of key processes.
Responsibilities
- Analyse business requirements and translate them into technical specifications and implementation plans.
- Design, develop and maintain mainframe applications using COBOL, JCL and CICS on z/OS.
- Develop and optimise DB2 SQL queries and participate in database design and performance tuning.
- Troubleshoot and resolve production incidents, perform root cause analysis and implement corrective measures.
- Improve application performance, reliability and maintainability through code review and refactoring.
- Collaborate with cross-functional teams and stakeholders in an international project environment.
- Contribute to knowledge sharing, documentation and adoption of best practices.
- Support testing, deployment and operation activities, and participate in on-call rotations if required.
Qualifications
- Minimum five years of professional experience in development and maintenance of applications on the IBM Mainframe platform.
- Strong practical knowledge of COBOL, JCL, CICS and z/OS.
- Hands-on experience with DB2, including SQL development, query optimisation and data analysis.
- Proven ability to independently design and implement effective technical solutions to meet business needs.
- Experience troubleshooting production issues and optimising existing applications.
- Proactive, self-driven approach with a clear sense of ownership and accountability.
- Strong collaboration and communication skills suitable for international project teams.
- English language proficiency at B1 level or higher.
- Desirable: experience with Git, Bitbucket and CI/CD practices in mainframe environments; background in banking, financial services or insurance; familiarity with mainframe modernisation initiatives and AI-driven software development solutions; experience mentoring junior developers.
Benefits
- Work within a team of senior specialists on high-importance, regulated-industry projects.
- Opportunities for professional development and exposure to mainframe modernisation practices.
- Collaborative, international project environment with cross-border stakeholders.
- Accountability for technically significant systems and direct impact on operational quality.
Recruitment stages: Nowy, Wstępny akcept, Rozmowa telefoniczna, Rozmowa kwalifikacyjna, Ocena, Oferta.
If you meet the qualifications and are interested in this role, please apply via the application form.