Mainframe Contracts in the City of London

Mainframes
Central London > City of London

The table below looks at the prevalence of the term Mainframe in contract job vacancies in the City of London. Included is a benchmarking guide to the contractor rates offered in vacancies that cited Mainframe over the 6 months leading up to 3 May 2025, comparing them to the same period in the previous two years.

6 months to
3 May 2025
Same period 2024 Same period 2023
Rank 114 119 168
Rank change year-on-year +5 +49 +23
Contract jobs citing Mainframe 9 8 8
As % of all contract jobs advertised in the City of London 0.51% 0.36% 0.22%
As % of the Miscellaneous category 1.48% 1.19% 0.62%
Number of daily rates quoted 5 4 5
10th Percentile - - -
25th Percentile £325 £525 £550
Median daily rate (50th Percentile) £375 £550 £600
Median % change year-on-year -31.82% -8.33% -7.69%
75th Percentile £474 £575 £675
90th Percentile £550 - £720
Central London median daily rate £383 £550 £600
% change year-on-year -30.45% -8.33% -7.69%

All Generic Skills
City of London

Mainframe falls under the General and Transferable Skills category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring generic IT skills in the City of London.

Contract vacancies with a requirement for generic IT skills 610 674 1,297
As % of all contract IT jobs advertised in the City of London 34.74% 30.75% 35.58%
Number of daily rates quoted 384 460 881
10th Percentile £363 £274 £350
25th Percentile £475 £425 £500
Median daily rate (50th Percentile) £596 £575 £625
Median % change year-on-year +3.70% -8.00% +8.70%
75th Percentile £700 £700 £750
90th Percentile £800 £850 £856
Central London median daily rate £575 £575 £613
% change year-on-year - -6.12% +6.52%
Number of hourly rates quoted 3 7 13
10th Percentile £23.80 £12.75 £17.33
25th Percentile £26.50 £14.38 -
Median hourly rate £31.00 £23.00 £35.00
Median % change year-on-year +34.78% -34.29% -27.84%
75th Percentile £65.50 £27.25 £88.30
90th Percentile £86.20 £36.60 -
Central London median hourly rate £29.07 £23.00 £35.00
% change year-on-year +26.39% -34.29% -27.84%

Mainframe
Job Vacancy Trend in the City of London

Job postings citing Mainframe as a proportion of all IT jobs advertised in the City of London.

Job vacancy trend for Mainframe in the City of London

Mainframe
Contractor Daily Rate Trend in the City of London

3-month moving average daily rate quoted in jobs citing Mainframe in the City of London.

Daily rate trend for Mainframe in the City of London

Mainframe
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing Mainframe in the City of London over the 6 months to 3 May 2025.

Daily rate histogram for Mainframe in the City of London

Mainframe
Contractor Hourly Rate Trend in the City of London

3-month moving average hourly rates quoted in jobs citing Mainframe in the City of London.

Hourly rate trend for Mainframe in the City of London

Mainframe
Co-occurring Skills and Capabilities in the City of London by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same employment type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 3 (33.33%) CICS
2 1 (11.11%) SAS
Cloud Services
1 4 (44.44%) AWS
2 2 (22.22%) Azure
Database & Business Intelligence
1 1 (11.11%) DB2
Development Applications
1 2 (22.22%) GitLab
2 1 (11.11%) ChangeMan
General
1 5 (55.56%) Finance
2 4 (44.44%) Social Skills
3 3 (33.33%) Analytical Skills
3 3 (33.33%) Banking
Job Titles
1 3 (33.33%) Architect
1 3 (33.33%) Programmer
1 3 (33.33%) Solutions Architect
1 3 (33.33%) Systems Programmer
1 3 (33.33%) z/OS Systems Programmer
2 2 (22.22%) DevOps Engineer
2 2 (22.22%) Lead
2 2 (22.22%) Lead Architect
2 2 (22.22%) Lead Solutions Architect
2 2 (22.22%) Mainframe Architect
3 1 (11.11%) Consultant
3 1 (11.11%) Infrastructure Architect
3 1 (11.11%) Infrastructure Solutions Architect
3 1 (11.11%) Senior
3 1 (11.11%) Senior Architect
3 1 (11.11%) Senior Infrastructure Architect
3 1 (11.11%) Senior Solutions Architect
Libraries, Frameworks & Software Standards
1 3 (33.33%) ISPF
Miscellaneous
1 2 (22.22%) Analytical Mindset
1 2 (22.22%) DataPower
1 2 (22.22%) iSeries
Operating Systems
1 3 (33.33%) zOS
Processes & Methodologies
1 4 (44.44%) Problem-Solving
2 3 (33.33%) Migration
3 2 (22.22%) Architectural Design
3 2 (22.22%) CI/CD
3 2 (22.22%) Containerisation
3 2 (22.22%) DevOps
3 2 (22.22%) Infrastructure as Code
3 2 (22.22%) Resource Management
3 2 (22.22%) Risk Management
3 2 (22.22%) Software Engineering
3 2 (22.22%) Task Automation
4 1 (11.11%) Agile
4 1 (11.11%) Data Migration
4 1 (11.11%) Performance Monitoring
4 1 (11.11%) SDLC
Programming Languages
1 4 (44.44%) REXX
2 3 (33.33%) JCL
3 2 (22.22%) Java
3 2 (22.22%) Python
4 1 (11.11%) Assembly Language
4 1 (11.11%) CLIST
System Software
1 3 (33.33%) Time Sharing Option
2 2 (22.22%) Docker
Systems Management
1 2 (22.22%) Kubernetes
1 2 (22.22%) Terraform
2 1 (11.11%) OMEGAMON
Vendors
1 3 (33.33%) IBM
2 1 (11.11%) Guidewire
2 1 (11.11%) Micro Focus