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# Mainframe Datacom Engineer

- **Company:** CBS Butler Limited
- **Location:** Sheffield, United Kingdom (Remote available)
- **Salary:** £130,000 - £137,800
- **Contract:** Temporary contract
- **Skills:** Databases, IBM DB2, Job Control Language (JCL), Mainframes, Performance Tuning, Broadcom, System Programming, Z/OS, Database Performance, Database Backup
- **Published:** November 10, 2026
- **Apply:** https://www.careerboard.com/gb/en/find-jobs-in-United-Kingdom/-61972D1F921FCA3FCB/

## About the Role

* Strong hands-on Broadcom/CA Datacom DBA or System Programming experience.
 * Extensive IBM z/OS and JCL knowledge.
 * Experience with database backup, recovery and performance tuning.
 * Practical Datacom patching and maintenance experience.
 * Proven ability to independently troubleshoot and resolve technical issues.
 * Experience supporting enterprise-scale production Datacom environments.
 * Spanish language skills.
 * Availability to work Mexico-aligned hours.

Important: This is a specialist BAU support role, not a production monitoring or Datacom-to-DB2 migration position. We need someone with genuine hands-on Datacom expertise who can take ownership and deliver from day one.

If you have the relevant experience and are interested in this opportunity, please get in touch to discuss further.

## Description

We are looking for an experienced Mainframe Datacom Engineer/DBA to support an established Broadcom (CA) Datacom environment running on IBM z/OS.

This is a hands-on technical role requiring a specialist who can hit the ground running, take ownership of BAU activities and independently diagnose and resolve database issues with minimal training or supervision., * Administer and maintain Broadcom/CA Datacom databases on IBM z/OS.

 * Diagnose and resolve complex database and platform issues.
 * Perform database backup, recovery, restoration and administration.
 * Troubleshoot database performance and query-related issues.
 * Support Datacom patching, fixes, maintenance and validation.
 * Carry out root cause analysis and implement permanent fixes.
 * Provide technical support to application, operations and infrastructure teams.
 * Take ownership of existing BAU Datacom activities.