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# Mainframe Developer & Support (OS2200/COBOL)

- **Company:** Unisys
- **Location:** Milton Keynes, UK
- **Contract:** Permanent contract
- **Skills:** Data Analysis, COBOL (Programming Language), Databases, Relational Databases, Mainframes, Transaction Processing (Computing), Counter Terrorist Check
- **Published:** July 28, 2026
- **Apply:** https://www.totaljobs.com/job/developer-cobol/unisys-corporation-job107757591

## About the Role

The main technical skills that we require for this role would be experience within Application Support, ideally with strong mainframe skills such as COBOL development and tools. More specifically, knowledge of the following technologies would be required or advantageous:

 * COBOL
 * Experience of OS2200 Unisys mainframe technology.
 * DMS (hierarchical database)/RDMS (relational database) database experience
 * An understanding of Transaction Processing (TIP/HVTIP) or similar

Over and above the technical requirements for this role, we would expect the individual to be able to apply technical expertise within a service delivery environment and be comfortable to develop technical solutions without adversely impacting the operational effectiveness of the supported systems. You may have a good understanding of ITIL which provides you with the framework to achieving this.

Strong interpersonal skills are expected as you will be communicating regularly with our client. Any previous experience within Public Sector organisations would be welcomed., Candidates must be eligible for, and will be required to obtain and maintain, Counter Terrorist Check (CTC) clearance for this role. Eligibility requires continuous residence in the UK for a minimum of three years. This is a mandatory requirement and cannot be waived.

## Description

As part of our Managed Applications Services, we provide day-to-day support for applications running in a mission-critical environment on a 24x7 basis. We are looking for an individual to join our team that provides support and development to our Command-and-Control services for our client. You will be required to attend our client's site three days per week.

This role would focus on the mainframe element of the solution and e would include providing day-to-day support for existing services as well as software enhancements as defined by our client.

You will see yourself:

 * Identifying problems and potential resolutions to support end users
 * Analysing and resolving issues relating to interfaces between various system components
 * Applying ingenuity and creativity in developing enhancements and new areas of functionality


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