IBM z/OS
London > Central London
The table below provides summary statistics and salary benchmarking for jobs advertised in Central London requiring zOS skills. It covers permanent job vacancies from the 6 months leading up to 4 November 2025, with comparisons to the same periods in the previous two years.
| 6 months to 4 Nov 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | 139 | 181 | - |
| Rank change year-on-year | +42 | - | - |
| Permanent jobs citing zOS | 1 | 1 | 0 |
| As % of all permanent jobs in Central London | 0.053% | 0.031% | - |
| As % of the Operating Systems category | 0.43% | 0.18% | - |
| Number of salaries quoted | 1 | 0 | 0 |
| 10th Percentile | - | - | - |
| 25th Percentile | £72,500 | - | - |
| Median annual salary (50th Percentile) | £75,000 | - | - |
| 75th Percentile | £77,500 | - | - |
| 90th Percentile | - | - | - |
| London median annual salary | £87,500 | £50,000 | £65,066 |
| % change year-on-year | +75.00% | -23.15% | -13.25% |
All Operating Systems
Central London
zOS falls under the Operating Systems category. For comparison with the information above, the following table provides summary statistics for all permanent job vacancies requiring operating system skills in Central London.
| Permanent vacancies with a requirement for operating system skills | 230 | 558 | 599 |
| As % of all permanent jobs advertised in Central London | 12.16% | 17.51% | 18.12% |
| Number of salaries quoted | 200 | 390 | 540 |
| 10th Percentile | £33,000 | £36,250 | £31,250 |
| 25th Percentile | £40,000 | £47,500 | £38,000 |
| Median annual salary (50th Percentile) | £55,000 | £60,000 | £60,000 |
| Median % change year-on-year | -8.33% | - | - |
| 75th Percentile | £78,750 | £83,750 | £77,500 |
| 90th Percentile | £90,000 | £112,500 | £91,825 |
| London median annual salary | £69,250 | £65,000 | £62,500 |
| % change year-on-year | +6.54% | +4.00% | -3.85% |
zOS
Job Vacancy Trend in Central London
Historical trend showing the proportion of permanent IT job postings citing zOS relative to all permanent IT jobs advertised in Central London.
zOS
Salary Trend in Central London
Salary distribution trend for jobs in Central London citing zOS.
zOS
Job Locations in Central London
The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing zOS within the Central London region over the 6 months to 4 November 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 |
|---|---|---|---|---|---|
| City of London | +41 | 1 | £75,000 | - | 2 |
| zOS London |
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zOS
Co-Occurring Skills & Capabilities in Central 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:
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