ISA99 (Industrial Automation and Control Systems Security)
UK
The table below provides summary statistics for permanent job vacancies requiring ISA99 skills. It includes a benchmarking guide to the annual salaries offered in vacancies that cited ISA99 over the 6 months leading up to 12 May 2025, comparing them to the same period in the previous two years.
| 6 months to 12 May 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | - | 892 | 978 |
| Rank change year-on-year | - | +86 | +244 |
| Permanent jobs citing ISA99 | 0 | 2 | 3 |
| As % of all permanent jobs advertised in the UK | - | 0.002% | 0.003% |
| As % of the Quality Assurance & Compliance category | - | 0.015% | 0.016% |
| Number of salaries quoted | 0 | 2 | 2 |
| 10th Percentile | - | £56,250 | £61,625 |
| 25th Percentile | - | £58,125 | £64,063 |
| Median annual salary (50th Percentile) | - | £62,500 | £71,250 |
| Median % change year-on-year | - | -12.28% | - |
| 75th Percentile | - | £68,125 | £76,563 |
| 90th Percentile | - | £70,750 | £77,875 |
| UK excluding London median annual salary | - | - | £77,500 |
All Quality Assurance and Compliance Skills
UK
ISA99 falls under the Quality Assurance and Compliance category. For comparison with the information above, the following table provides summary statistics for all permanent job vacancies requiring quality assurance or compliance skills.
| Permanent vacancies with a requirement for quality assurance or compliance skills | 9,336 | 13,639 | 19,042 |
| As % of all permanent jobs advertised in the UK | 16.93% | 13.74% | 18.87% |
| Number of salaries quoted | 4,778 | 9,278 | 8,843 |
| 10th Percentile | £31,250 | £27,000 | £32,000 |
| 25th Percentile | £43,290 | £36,250 | £42,500 |
| Median annual salary (50th Percentile) | £60,000 | £52,500 | £57,500 |
| Median % change year-on-year | +14.29% | -8.70% | +4.55% |
| 75th Percentile | £73,000 | £70,000 | £76,250 |
| 90th Percentile | £90,000 | £90,000 | £93,750 |
| UK excluding London median annual salary | £55,000 | £47,500 | £50,000 |
| % change year-on-year | +15.79% | -5.00% | +4.90% |
ISA99
Job Vacancy Trend
Job postings citing ISA99 as a proportion of all IT jobs advertised.
ISA99
Salary Trend
3-month moving average salary quoted in jobs citing ISA99.