iSeries Contract Job Trends in the City of London

IBM iSeries
Central London > City of London

The table below looks at the prevalence of the term iSeries in contract job vacancies in the City of London. Included is a benchmarking guide to the contractor rates offered in vacancies that cited iSeries over the 6 months leading up to 12 September 2025, comparing them to the same period in the previous two years.

6 months to
12 Sep 2025
Same period 2024 Same period 2023
Rank 113 118 153
Rank change year-on-year +5 +35 +33
Contract jobs citing iSeries 3 5 1
As % of all contract jobs advertised in the City of London 0.17% 0.24% 0.032%
As % of the Miscellaneous category 0.44% 0.78% 0.098%
Number of daily rates quoted 2 0 1
10th Percentile £585 - -
25th Percentile £600 - £513
Median daily rate (50th Percentile) £650 - £525
Median % change year-on-year - - -6.25%
75th Percentile £700 - £538
90th Percentile £715 - -
Central London median daily rate £650 - £525
% change year-on-year - - -6.25%

All Generic Skills
City of London

iSeries 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 685 640 1,018
As % of all contract IT jobs advertised in the City of London 38.16% 30.61% 32.91%
Number of daily rates quoted 469 393 668
10th Percentile £350 £361 £325
25th Percentile £458 £484 £481
Median daily rate (50th Percentile) £600 £596 £600
Median % change year-on-year +0.76% -0.75% -
75th Percentile £696 £713 £738
90th Percentile £803 £838 £838
Central London median daily rate £585 £589 £600
% change year-on-year -0.72% -1.79% +3.36%
Number of hourly rates quoted 9 5 7
10th Percentile £16.96 £18.40 £22.39
25th Percentile £19.79 £22.00 £30.63
Median hourly rate £27.50 £27.00 £36.00
Median % change year-on-year +1.85% -25.00% -28.71%
75th Percentile £65.57 - £47.66
90th Percentile £91.00 £66.30 £59.30
Central London median hourly rate £26.98 £25.79 £35.50
% change year-on-year +4.59% -27.35% -29.70%

iSeries
Job Vacancy Trend in the City of London

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

Job vacancy trend for iSeries in the City of London

iSeries
Daily Rate Trend in the City of London

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

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

iSeries
Hourly Rate Trend in the City of London

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

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

iSeries
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:

Cloud Services
1 1 (33.33%) AWS
1 1 (33.33%) Azure
Database & Business Intelligence
1 2 (66.67%) DB2
Development Applications
1 1 (33.33%) Eclipse
General
1 2 (66.67%) Finance
1 2 (66.67%) Social Skills
2 1 (33.33%) Analytical Skills
2 1 (33.33%) Banking
Job Titles
1 1 (33.33%) Analyst
1 1 (33.33%) Business Systems Analyst
1 1 (33.33%) Developer
1 1 (33.33%) Development Manager
1 1 (33.33%) Insurance Systems Analyst
1 1 (33.33%) RPG Developer
1 1 (33.33%) Senior
1 1 (33.33%) Senior Development Manager
1 1 (33.33%) Senior Manager
1 1 (33.33%) Systems Analyst
Libraries, Frameworks & Software Standards
1 1 (33.33%) .NET
1 1 (33.33%) Web Services
Miscellaneous
1 3 (100.00%) AS400
2 1 (33.33%) Analytical Mindset
2 1 (33.33%) Legacy Systems
Processes & Methodologies
1 2 (66.67%) Agile
1 2 (66.67%) Roadmaps
1 2 (66.67%) Translating Business Requirements
2 1 (33.33%) Analytics
2 1 (33.33%) Backlog Management
2 1 (33.33%) Backlog Prioritisation
2 1 (33.33%) Budgeting and Resource Allocation
2 1 (33.33%) CI/CD
2 1 (33.33%) Computer Science
2 1 (33.33%) Data Analytics
2 1 (33.33%) Decision-Making
2 1 (33.33%) DevOps
2 1 (33.33%) Infrastructure as Code
2 1 (33.33%) Proactive Maintenance
2 1 (33.33%) Problem-Solving
2 1 (33.33%) Project Delivery
2 1 (33.33%) Resource Allocation
2 1 (33.33%) SDLC
2 1 (33.33%) Secure Coding
2 1 (33.33%) Software Engineering
Programming Languages
1 3 (100.00%) RPG
2 2 (66.67%) SQL
3 1 (33.33%) COBOL
3 1 (33.33%) Korn
3 1 (33.33%) RPG IV
Qualifications
1 1 (33.33%) CFA
1 1 (33.33%) Computer Science Degree
1 1 (33.33%) Degree
Vendors
1 2 (66.67%) IBM
2 1 (33.33%) Avaloq
2 1 (33.33%) FNZ
2 1 (33.33%) Microsoft