AS400 Job Trends in the City of London

IBM AS/400
Central London > City of London

The table below looks at the prevalence of the term AS400 in permanent job vacancies in the City of London. Included is a benchmarking guide to the salaries offered in vacancies that cited AS400 over the 6 months leading up to 25 March 2026, comparing them to the same period in the previous two years.

6 months to
25 Mar 2026
Same period 2025 Same period 2024
Rank 147 - 170
Rank change year-on-year - - -
Permanent jobs citing AS400 2 0 1
As % of all permanent jobs in the City of London 0.062% - 0.032%
As % of the Miscellaneous category 0.20% - 0.094%
Number of salaries quoted 2 0 1
10th Percentile £57,750 - -
25th Percentile £58,125 - £71,250
Median annual salary (50th Percentile) £67,500 - £72,500
75th Percentile £78,125 - £73,750
90th Percentile £79,250 - -
Central London median annual salary £67,500 - £72,500

All Generic Skills
City of London

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 the City of London.

Permanent vacancies with a requirement for generic IT skills 999 870 1,061
As % of all permanent jobs advertised in the City of London 30.74% 41.69% 33.83%
Number of salaries quoted 717 631 873
10th Percentile £42,500 £41,250 £38,117
25th Percentile £57,500 £53,750 £52,500
Median annual salary (50th Percentile) £75,000 £72,500 £75,000
Median % change year-on-year +3.45% -3.33% -3.23%
75th Percentile £100,000 £97,500 £97,500
90th Percentile £113,750 £123,750 £120,000
Central London median annual salary £75,000 £72,500 £75,000
% change year-on-year +3.45% -3.33% -3.23%

AS400
Job Vacancy Trend in the City of London

Historical trend showing the proportion of permanent IT job postings citing AS400 relative to all permanent IT jobs advertised in the City of London.

AS400 job vacancy trend in the City of London

AS400
Salary Trend in the City of London

Salary distribution trend for jobs in the City of London citing AS400.

Salary distribution trend for jobs in the City of London citing AS400

AS400
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 2 (100.00%) Finance
Job Titles
1 1 (50.00%) Analyst
1 1 (50.00%) Developer
1 1 (50.00%) Support Analyst
Processes & Methodologies
1 2 (100.00%) Business Continuity
1 2 (100.00%) Capacity Planning
1 2 (100.00%) Change Management
1 2 (100.00%) Disaster Recovery
1 2 (100.00%) Knowledge Transfer
1 2 (100.00%) Performance Management
1 2 (100.00%) Process Improvement
1 2 (100.00%) Runbook
1 2 (100.00%) Service Management