zOS Contract Job Trends in the City of London

IBM z/OS
Central London > City of London

The table below provides summary statistics and contractor rates for jobs advertised in the City of London requiring zOS skills. It covers contract job vacancies from the 6 months leading up to 29 January 2026, with comparisons to the same periods in the previous two years.

6 months to
29 Jan 2026
Same period 2025 Same period 2024
Rank 123 - 130
Rank change year-on-year - - +52
Contract jobs citing zOS 2 0 1
As % of all contract jobs in the City of London 0.11% - 0.042%
As % of the Operating Systems category 1.43% - 0.31%
Number of daily rates quoted 2 0 0
10th Percentile £429 - -
25th Percentile £435 - -
Median daily rate (50th Percentile) £465 - -
75th Percentile £490 - -
90th Percentile £493 - -
Central London median daily rate £465 - -

All Operating Systems
City of London

zOS falls under the Operating Systems category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring operating system skills in the City of London.

Contract vacancies with a requirement for operating system skills 140 245 318
As % of all contract IT jobs advertised in the City of London 7.46% 13.04% 13.20%
Number of daily rates quoted 114 164 230
10th Percentile £195 £258 £205
25th Percentile £316 £386 £314
Median daily rate (50th Percentile) £525 £524 £480
Median % change year-on-year +0.24% +9.11% -9.43%
75th Percentile £675 £653 £638
90th Percentile £775 £711 £726
Central London median daily rate £525 £510 £475
% change year-on-year +2.94% +7.37% -9.52%
Number of hourly rates quoted 2 2 3
10th Percentile £21.39 - £19.39
25th Percentile £22.24 - £20.09
Median hourly rate £25.13 £112.00 £22.50
Median % change year-on-year -77.56% +397.78% +9.76%
75th Percentile £28.05 - £23.75
90th Percentile £28.92 - -
Central London median hourly rate £22.27 £112.00 £22.50
% change year-on-year -80.12% +397.78% +5.88%

zOS
Job Vacancy Trend in the City of London

Historical trend showing the proportion of contract IT job postings citing zOS relative to all contract IT jobs advertised in the City of London.

zOS job vacancy trend in the City of London

zOS
Daily Rate Trend in the City of London

Contractor daily rate distribution trend for jobs in the City of London citing zOS.

Contractor daily rate distribution trend for jobs in the City of London citing zOS

zOS
Hourly Rate Trend in the City of London

Contractor hourly rate distribution trend for jobs in the City of London citing zOS.

Contractor hourly rate distribution trend for jobs in the City of London citing zOS

zOS
Co-Occurring Skills & Capabilities in the City of London by Category

The following tables expand on the one above by listing co-occurrences grouped by category. They cover the same employment type, locality and period, with up to 20 co-occurrences shown in each category:

General
1 1 (50.00%) Finance
Job Titles
1 1 (50.00%) Automation Engineer
1 1 (50.00%) Consultant
1 1 (50.00%) Mainframe Consultant
1 1 (50.00%) Mainframe Systems Engineer
1 1 (50.00%) Systems Engineer
Libraries, Frameworks & Software Standards
1 1 (50.00%) ISPF
Miscellaneous
1 2 (100.00%) Mainframe
Processes & Methodologies
1 1 (50.00%) Data Collection
1 1 (50.00%) Performance Monitoring
1 1 (50.00%) Workflow
Programming Languages
1 2 (100.00%) JCL
1 2 (100.00%) REXX
2 1 (50.00%) Assembly Language
System Software
1 1 (50.00%) Job Entry Subsystem
Vendors
1 1 (50.00%) BMC
1 1 (50.00%) Broadcom
1 1 (50.00%) IBM
1 1 (50.00%) Splunk