AS400 Job Trends in England

IBM AS/400
UK > England

The table below looks at the prevalence of the term AS400 in permanent job vacancies in England. Included is a benchmarking guide to the salaries offered in vacancies that cited AS400 over the 6 months leading up to 16 September 2025, comparing them to the same period in the previous two years.

6 months to
16 Sep 2025
Same period 2024 Same period 2023
Rank 610 691 684
Rank change year-on-year +81 -7 +367
Permanent jobs citing AS400 27 56 60
As % of all permanent jobs advertised in England 0.063% 0.082% 0.11%
As % of the Miscellaneous category 0.15% 0.25% 0.26%
Number of salaries quoted 16 51 47
10th Percentile £26,000 - £40,000
25th Percentile £29,938 £42,500 £44,750
Median annual salary (50th Percentile) £57,500 £55,000 £55,000
Median % change year-on-year +4.55% - +10.00%
75th Percentile £91,250 - £58,750
90th Percentile £91,875 £55,250 £63,000
UK median annual salary £50,000 £55,000 £55,000
% change year-on-year -9.09% - +10.00%

All Generic Skills
England

AS400 falls under the General and Transferable Skills category. For comparison with the information above, the following table provides summary statistics for all permanent job vacancies requiring generic IT skills in England.

Permanent vacancies with a requirement for generic IT skills 18,045 21,985 22,668
As % of all permanent jobs advertised in England 41.88% 32.06% 41.14%
Number of salaries quoted 9,119 11,716 16,210
10th Percentile £28,742 £31,250 £35,000
25th Percentile £36,925 £43,500 £46,250
Median annual salary (50th Percentile) £55,000 £60,000 £65,000
Median % change year-on-year -8.33% -7.69% +4.00%
75th Percentile £78,750 £83,750 £85,000
90th Percentile £105,000 £112,500 £110,000
UK median annual salary £55,000 £60,000 £62,500
% change year-on-year -8.33% -4.00% -

AS400
Job Vacancy Trend in England

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

Job vacancy trend for AS400 in England

AS400
Salary Trend in England

Salary distribution trend for jobs in England citing AS400.

Salary distribution trend for jobs in England citing AS400

AS400
Salary Histogram in England

Salary distribution for jobs citing AS400 in England over the 6 months to 16 September 2025.

Salary histogram for AS400 in England

AS400
Job Locations in England

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing AS400 within the England region over the 6 months to 16 September 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Jobs
South East +50 13 £70,000 +27.27% 6
Midlands +63 11 £32,500 -27.78% 2
East Midlands - 9 - - 1
London - 3 £85,000 - 7
West Midlands +45 2 £32,500 -27.78% 1
AS400
UK

AS400
Co-occurring Skills and Capabilities in England 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 (14.81%) SharePoint
Applications
1 4 (14.81%) Microsoft Office
Cloud Services
1 6 (22.22%) Azure
1 6 (22.22%) Microsoft 365
2 4 (14.81%) Power Platform
3 1 (3.70%) AWS
3 1 (3.70%) Nutanix
3 1 (3.70%) SaaS
Communications & Networking
1 4 (14.81%) VLAN
2 2 (7.41%) FTP
2 2 (7.41%) SSL
3 1 (3.70%) DNS
3 1 (3.70%) Firewall
Database & Business Intelligence
1 4 (14.81%) Data Warehouse
2 2 (7.41%) DB2
3 1 (3.70%) SQL Server
General
1 5 (18.52%) Social Skills
2 4 (14.81%) Organisational Skills
2 4 (14.81%) Telecoms
3 3 (11.11%) Inclusion and Diversity
4 2 (7.41%) Analytical Skills
4 2 (7.41%) Finance
5 1 (3.70%) Banking
Job Titles
1 9 (33.33%) AS400 Programmer
1 9 (33.33%) Programmer
1 9 (33.33%) RPG Programmer
2 5 (18.52%) IT Support
3 4 (14.81%) IT Support Technician
3 4 (14.81%) IT Technician
3 4 (14.81%) Support Technician
4 3 (11.11%) Head of IT
5 2 (7.41%) Analyst
5 2 (7.41%) AS400 Operator
5 2 (7.41%) Head of Technology
5 2 (7.41%) Lead
5 2 (7.41%) Lead Software Engineer
5 2 (7.41%) Software Engineer
5 2 (7.41%) Test Analyst
6 1 (3.70%) Citrix Support
6 1 (3.70%) Infrastructure Support
6 1 (3.70%) Manual Test Analyst
6 1 (3.70%) Sales Representative
6 1 (3.70%) Server Support
Libraries, Frameworks & Software Standards
1 2 (7.41%) Flash
Miscellaneous
1 17 (62.96%) iSeries
2 4 (14.81%) Mainframe
3 2 (7.41%) Enterprise Cloud
3 2 (7.41%) IBM Storwize
4 1 (3.70%) Data Centre
4 1 (3.70%) Hybrid Cloud
4 1 (3.70%) Legacy Applications
Operating Systems
1 5 (18.52%) Windows
1 5 (18.52%) Windows 10
1 5 (18.52%) Windows Server
Processes & Methodologies
1 6 (22.22%) Decision-Making
1 6 (22.22%) Problem-Solving
2 5 (18.52%) Service Delivery
3 4 (14.81%) Cybersecurity
3 4 (14.81%) IT Strategy
3 4 (14.81%) Mathematics
3 4 (14.81%) Roadmaps
3 4 (14.81%) Service Management
3 4 (14.81%) Test Automation
4 3 (11.11%) Continuous Improvement
4 3 (11.11%) ERP
4 3 (11.11%) Planning and Forecasting
4 3 (11.11%) Strategic Planning
4 3 (11.11%) Technology Roadmap
4 3 (11.11%) Technology Strategy
4 3 (11.11%) Technology Transformation
5 2 (7.41%) High Availability
5 2 (7.41%) Mentoring
5 2 (7.41%) Software Delivery
5 2 (7.41%) Unit Testing
Programming Languages
1 15 (55.56%) RPG
2 13 (48.15%) SQL
3 2 (7.41%) C#
3 2 (7.41%) RPG IV
Quality Assurance & Compliance
1 1 (3.70%) Cyber Essentials
1 1 (3.70%) Cyber Essentials PLUS
1 1 (3.70%) GDPR
1 1 (3.70%) ISO/IEC 27001
System Software
1 5 (18.52%) Active Directory
2 2 (7.41%) Virtual Machines
3 1 (3.70%) VMware Infrastructure
Systems Management
1 2 (7.41%) ZABBIX
2 1 (3.70%) FortiGate
Vendors
1 9 (33.33%) Microsoft
2 6 (22.22%) IBM
3 1 (3.70%) Cisco
3 1 (3.70%) Citrix
3 1 (3.70%) Fortinet
3 1 (3.70%) VMware
3 1 (3.70%) Zscaler