AS400 Contracts

IBM AS/400
UK

The table below looks at the prevalence of the term AS400 in contract job vacancies. Included is a benchmarking guide to the contractor rates offered in vacancies that cited AS400 over the 6 months leading up to 1 July 2025, comparing them to the same period in the previous two years.

6 months to
1 Jul 2025
Same period 2024 Same period 2023
Rank 515 567 612
Rank change year-on-year +52 +45 +199
Contract jobs citing AS400 21 24 70
As % of all contract jobs advertised in the UK 0.068% 0.056% 0.13%
As % of the Miscellaneous category 0.20% 0.18% 0.38%
Number of daily rates quoted 10 6 35
10th Percentile £357 £399 £305
25th Percentile £441 £414 £381
Median daily rate (50th Percentile) £600 £444 £510
Median % change year-on-year +35.21% -12.99% +7.37%
75th Percentile £672 £470 £633
90th Percentile £691 £475 £760
UK excluding London median daily rate £398 £385 £375
% change year-on-year +3.25% +2.67% +11.11%
Number of hourly rates quoted 3 2 0
Median hourly rate £6.00 £22.50 -
Median % change year-on-year -73.33% - -
UK excluding London median hourly rate £6.00 £22.50 -
% change year-on-year -73.33% - -

All Generic Skills
UK

AS400 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.

Contract vacancies with a requirement for generic IT skills 10,668 13,018 18,342
As % of all contract IT jobs advertised in the UK 34.63% 30.16% 32.87%
Number of daily rates quoted 6,619 8,265 12,604
10th Percentile £300 £280 £313
25th Percentile £406 £413 £450
Median daily rate (50th Percentile) £525 £540 £550
Median % change year-on-year -2.78% -1.82% -
75th Percentile £650 £663 £676
90th Percentile £775 £800 £800
UK excluding London median daily rate £475 £500 £500
% change year-on-year -5.00% - -
Number of hourly rates quoted 496 927 581
10th Percentile £15.50 £12.25 £9.80
25th Percentile £18.87 £15.32 £11.87
Median hourly rate £30.90 £35.65 £22.50
Median % change year-on-year -13.32% +58.44% -16.64%
75th Percentile £57.50 £62.25 £60.63
90th Percentile £78.73 £72.50 £75.00
UK excluding London median hourly rate £30.00 £35.58 £22.50
% change year-on-year -15.67% +58.11% +4.65%

AS400
Job Vacancy Trend

Job postings citing AS400 as a proportion of all IT jobs advertised.

Job vacancy trend for AS400 in the UK

AS400
Contractor Daily Rate Trend

3-month moving average daily rate quoted in jobs citing AS400.

Daily rate trend for AS400 in the UK

AS400
Daily Rate Histogram

Daily rate distribution for jobs citing AS400 over the 6 months to 1 July 2025.

Daily rate histogram for AS400 in the UK

AS400
Contractor Hourly Rate Trend

3-month moving average hourly rates quoted in jobs citing AS400.

Hourly rate trend for AS400 in the UK

AS400
Top 10 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing AS400 within the UK over the 6 months to 1 July 2025. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Jobs
England +57 19 £600 +35.21% 63
Work from Home +52 12 £600 - 52
London +38 10 £613 +32.43% 21
UK excluding London +44 9 £398 +3.25% 46
South West - 3 - - 2
Midlands +14 2 £485 - 12
North of England +11 2 £425 +10.39% 11
West Midlands +7 2 £485 - 7
Yorkshire +2 2 £425 +10.39% 6
South East - 2 £350 - 9

AS400
Co-occurring Skills and Capabilities 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 4 (19.05%) MQSeries
Applications
1 3 (14.29%) Microsoft Excel
Business Applications
1 2 (9.52%) Misys Midas
Cloud Services
1 3 (14.29%) Azure
2 1 (4.76%) AWS
Database & Business Intelligence
1 3 (14.29%) DB2
General
1 10 (47.62%) Finance
2 7 (33.33%) Banking
3 4 (19.05%) Analytical Skills
3 4 (19.05%) Private Banking
4 3 (14.29%) Social Skills
5 1 (4.76%) Documentation Skills
5 1 (4.76%) Inclusion and Diversity
5 1 (4.76%) Law
Job Titles
1 7 (33.33%) Developer
2 6 (28.57%) Analyst
3 5 (23.81%) RPG Developer
4 3 (14.29%) Development Manager
4 3 (14.29%) Pricing Analyst
5 2 (9.52%) Analyst Developer
5 2 (9.52%) Architect
5 2 (9.52%) AS400 Developer
5 2 (9.52%) Azure Architect
5 2 (9.52%) Migration Architect
6 1 (4.76%) Administrator
6 1 (4.76%) Analyst Programmer
6 1 (4.76%) AS400 Analyst Programmer
6 1 (4.76%) AS400 Programmer
6 1 (4.76%) Disaster Recovery Manager
6 1 (4.76%) Disaster Recovery Test Manager
6 1 (4.76%) Programmer
6 1 (4.76%) Senior
6 1 (4.76%) Senior Development Manager
6 1 (4.76%) Senior Manager
Libraries, Frameworks & Software Standards
1 4 (19.05%) XML
2 2 (9.52%) Web Services
3 1 (4.76%) .NET
3 1 (4.76%) CSS
3 1 (4.76%) HTML
Miscellaneous
1 11 (52.38%) iSeries
2 3 (14.29%) Mainframe
3 2 (9.52%) Derivative
4 1 (4.76%) Data Centre
4 1 (4.76%) IBM Mainframe
4 1 (4.76%) Legacy Applications
4 1 (4.76%) Legacy Systems
Operating Systems
1 1 (4.76%) Linux
1 1 (4.76%) Unix
1 1 (4.76%) Windows
Processes & Methodologies
1 5 (23.81%) Problem-Solving
2 3 (14.29%) Continuous Improvement
2 3 (14.29%) Customer Requirements
2 3 (14.29%) ERP
2 3 (14.29%) Wealth Management
3 2 (9.52%) Agile
3 2 (9.52%) Change Control
3 2 (9.52%) Integration Testing
3 2 (9.52%) ITIL
3 2 (9.52%) Migration
3 2 (9.52%) Portfolio Management
3 2 (9.52%) Roadmaps
3 2 (9.52%) Translating Business Requirements
4 1 (4.76%) Budgeting and Resource Allocation
4 1 (4.76%) CI/CD
4 1 (4.76%) Error Analysis
4 1 (4.76%) IT Audit
4 1 (4.76%) Resource Allocation
4 1 (4.76%) SDLC
4 1 (4.76%) Secure Coding
Programming Languages
1 10 (47.62%) RPG
2 7 (33.33%) SQL
3 3 (14.29%) RPG IV
4 2 (9.52%) Java
5 1 (4.76%) COBOL
5 1 (4.76%) JavaScript
5 1 (4.76%) RPG/400
Qualifications
1 1 (4.76%) CFA
1 1 (4.76%) Computer Science Degree
1 1 (4.76%) Degree
Quality Assurance & Compliance
1 3 (14.29%) QA
Systems Management
1 3 (14.29%) Control-M
Vendors
1 12 (57.14%) IBM
2 3 (14.29%) Salesforce
3 1 (4.76%) AppDynamics
3 1 (4.76%) Avaloq
3 1 (4.76%) FNZ
3 1 (4.76%) Infor
3 1 (4.76%) Microsoft
3 1 (4.76%) Splunk