Microsoft Internet Security and Acceleration Server
UK > England
The table below provides summary statistics and salary benchmarking for jobs advertised in England requiring ISA Server skills. It covers permanent job vacancies from the 6 months leading up to 11 November 2025, with comparisons to the same periods in the previous two years.
| 6 months to 11 Nov 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | 620 | - | 690 |
| Rank change year-on-year | - | - | +355 |
| Permanent jobs citing ISA Server | 6 | 0 | 3 |
| As % of all permanent jobs in England | 0.013% | - | 0.006% |
| As % of the System Software category | 0.13% | - | 0.037% |
| Number of salaries quoted | 6 | 0 | 3 |
| 10th Percentile | £63,000 | - | - |
| 25th Percentile | £68,500 | - | £76,250 |
| Median annual salary (50th Percentile) | £90,000 | - | £82,500 |
| Median % change year-on-year | - | - | +142.65% |
| 75th Percentile | £95,000 | - | £88,750 |
| 90th Percentile | £96,250 | - | - |
| UK median annual salary | £90,000 | - | £82,500 |
| % change year-on-year | - | - | +46.67% |
All System Software Skills
England
ISA Server falls under the System Software category. For comparison with the information above, the following table provides summary statistics for all permanent job vacancies requiring system software skills in England.
| Permanent vacancies with a requirement for system software skills | 4,501 | 6,821 | 8,160 |
| As % of all permanent jobs advertised in England | 9.95% | 11.33% | 17.11% |
| Number of salaries quoted | 3,168 | 3,925 | 6,726 |
| 10th Percentile | £27,250 | £30,750 | £28,500 |
| 25th Percentile | £31,500 | £40,000 | £36,500 |
| Median annual salary (50th Percentile) | £47,500 | £56,000 | £55,000 |
| Median % change year-on-year | -15.18% | +1.82% | - |
| 75th Percentile | £72,500 | £76,000 | £74,250 |
| 90th Percentile | £88,750 | £95,000 | £90,000 |
| UK median annual salary | £50,000 | £55,000 | £55,000 |
| % change year-on-year | -9.09% | - | - |
ISA Server
Job Vacancy Trend in England
Historical trend showing the proportion of permanent IT job postings citing ISA Server relative to all permanent IT jobs advertised in England.
ISA Server
Salary Trend in England
Salary distribution trend for jobs in England citing ISA Server.
ISA Server
Salary Histogram in England
Salary distribution for jobs citing ISA Server in England over the 6 months to 11 November 2025.
ISA Server
Job Locations in England
The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing ISA Server within the England region over the 6 months to 11 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 |
|---|---|---|---|---|---|
| London | - | 4 | £90,000 | - | |
| South East | - | 2 | £66,000 | - | |
| ISA Server UK |
|||||
ISA Server
Co-Occurring Skills & Capabilities in England 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: