ISA99 (Industrial Automation and Control Systems Security)
UK
The table below provides summary statistics for contract job vacancies requiring ISA99 skills. It includes a benchmarking guide to the contractor rates 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 | - | 585 | - |
| Rank change year-on-year | - | - | - |
| Contract jobs citing ISA99 | 0 | 5 | 0 |
| As % of all contract jobs advertised in the UK | - | 0.012% | - |
| As % of the Quality Assurance & Compliance category | - | 0.081% | - |
| Number of daily rates quoted | 0 | 4 | 0 |
| Median daily rate (50th Percentile) | - | £700 | - |
| UK excluding London median daily rate | - | £700 | - |
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 contract job vacancies requiring quality assurance or compliance skills.
| Contract vacancies with a requirement for quality assurance or compliance skills | 4,588 | 6,144 | 7,733 |
| As % of all contract IT jobs advertised in the UK | 15.68% | 14.29% | 13.38% |
| Number of daily rates quoted | 2,936 | 3,904 | 5,308 |
| 10th Percentile | £266 | £288 | £281 |
| 25th Percentile | £400 | £400 | £413 |
| Median daily rate (50th Percentile) | £500 | £513 | £525 |
| Median % change year-on-year | -2.44% | -2.38% | +2.44% |
| 75th Percentile | £620 | £625 | £638 |
| 90th Percentile | £725 | £750 | £741 |
| UK excluding London median daily rate | £475 | £484 | £480 |
| % change year-on-year | -1.76% | +0.83% | +6.56% |
| Number of hourly rates quoted | 172 | 382 | 235 |
| 10th Percentile | £18.10 | £10.95 | £13.29 |
| 25th Percentile | £22.24 | £13.18 | £18.38 |
| Median hourly rate | £35.00 | £21.06 | £35.00 |
| Median % change year-on-year | +66.21% | -39.84% | +16.67% |
| 75th Percentile | £65.15 | £45.00 | £61.00 |
| 90th Percentile | £82.94 | £68.75 | £77.50 |
| UK excluding London median hourly rate | £51.25 | £18.19 | £32.94 |
| % change year-on-year | +181.75% | -44.78% | +46.41% |
ISA99
Job Vacancy Trend
Job postings citing ISA99 as a proportion of all IT jobs advertised.
ISA99
Contractor Daily Rate Trend
3-month moving average daily rate quoted in jobs citing ISA99.