Mainframe Programmer

Location: Sheffield - Hybrid 60% office - 40% Remote

Duration: 30/11/2026

Job Description

• The z/OS Systems Programmer should have technical, domain level and specialist skills to ensure that all the engineering services are operated, maintained and constantly upgraded as technology advances.
• There can be multiple functions within the job involving multiple products and technologies. Including but not limited to programming, support to maintain essential environmental conditions & analysis - creating functional/technical design solutions. The job holder may specialise in a single or combination of those functions/technologies. They will be involved in overseeing the deployment, planning, configuration & testing.

Key Skills

• Upgrading, maintaining and supporting the z/OS operating system.
• Upgrading, maintaining and supporting ISV products particularly from the vendors IBM and Computer Associates (CA).
• Production support.
• Must have extensive experience of Mainframe systems programming.
• Must have knowledge of a combination of z/OS, SMP/E, TSO/ISPF, USS, SDSF, JCL.
• Must have knowledge of IBM and CA Products and be able to work independently.
• Must have excellent problem determination skills and be a true team player.
• Required to provide off hours support for the implementation of software changes and support for other projects requiring software expertise as well as be part of an on-call rotation set and achieved challenging short, medium and long term goals which exceeded the standards in their field.
• Excellent written and spoken communication skills; an ability to communicate with impact, ensuring complex information is articulated in a meaningful way to wide and varied audiences.
• Built effective networks across business areas, developing relationships based on mutual trust and encouraging others to do the same.
• Have some experience of creating and deploying comprehensive business/operating plans which consistently deliver desired results.
• A comprehensive understanding of risk management and proven experience of ensuring own and others’ compliance with relevant regulatory process.

Additional (Optional) Skills

• Assembler, Automation, GDPS, Rexx and CLIST skills.
• Proficient in Top Secret skills.
• Performance monitoring using Omegamon, RMF, SMF and S.

• Upgrading, maintaining and supporting the z/OS operating system.
• Upgrading, maintaining and supporting ISV products particularly from the vendors IBM and Computer Associates (CA).
• Production support.
• Must have extensive experience of Mainframe systems programming.
• Must have knowledge of a combination of z/OS, SMP/E, TSO/ISPF, USS, SDSF, JCL.
• Must have knowledge of IBM and CA Products and be able to work independently.
• Must have excellent problem determination skills and be a true team player.
• Required to provide off hours support for the implementation of software changes and support for other projects requiring software expertise as well as be part of an on-call rotation set and achieved challenging short, medium and long term goals which exceeded the standards in their field.
• Excellent written and spoken communication skills; an ability to communicate with impact, ensuring complex information is articulated in a meaningful way to wide and varied audiences.
• Built effective networks across business areas, developing relationships based on mutual trust and encouraging others to do the same.
• Have some experience of creating and deploying comprehensive business/operating plans which consistently deliver desired results.
• A comprehensive understanding of risk management and proven experience of ensuring own and others’ compliance with relevant regulatory process., * Assembler, Automation, GDPS, Rexx and CLIST skills.
• Proficient in Top Secret skills.
• Performance monitoring using Omegamon, RMF, SMF and S.