WebAssembly (Wasm)
England > London
The table below provides summary statistics and salary benchmarking for jobs advertised in London requiring WebAssembly skills. It covers permanent job vacancies from the 6 months leading up to 20 November 2025, with comparisons to the same periods in the previous two years.
| 6 months to 20 Nov 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | - | - | 455 |
| Rank change year-on-year | - | - | +299 |
| Permanent jobs citing WebAssembly | 0 | 0 | 4 |
| As % of all permanent jobs in London | - | - | 0.021% |
| As % of the Libraries, Frameworks & Software Standards category | - | - | 0.073% |
| Number of salaries quoted | 0 | 0 | 2 |
| Median annual salary (50th Percentile) | - | - | £75,000 |
| Median % change year-on-year | - | - | -11.76% |
| England median annual salary | £49,000 | - | £70,000 |
| % change year-on-year | - | - | +75.00% |
All Software Libraries and Frameworks
London
WebAssembly falls under the Software Libraries and Frameworks category. For comparison with the information above, the following table provides summary statistics for all permanent job vacancies requiring technical specification, industry standards, software libraries and framework skills in London.
| Permanent vacancies with a requirement for technical specification, industry standards, software libraries and framework skills | 2,937 | 4,652 | 5,506 |
| As % of all permanent jobs advertised in London | 22.69% | 26.86% | 29.45% |
| Number of salaries quoted | 1,979 | 2,968 | 4,785 |
| 10th Percentile | £50,000 | £52,500 | £51,250 |
| 25th Percentile | £65,000 | £63,750 | £62,500 |
| Median annual salary (50th Percentile) | £85,000 | £85,000 | £80,000 |
| Median % change year-on-year | - | +6.25% | - |
| 75th Percentile | £113,750 | £110,000 | £100,250 |
| 90th Percentile | £136,250 | £138,750 | £120,000 |
| England median annual salary | £67,500 | £65,000 | £67,500 |
| % change year-on-year | +3.85% | -3.70% | +1.89% |
WebAssembly
Job Vacancy Trend in London
Historical trend showing the proportion of permanent IT job postings citing WebAssembly relative to all permanent IT jobs advertised in London.
WebAssembly
Salary Trend in London
Salary distribution trend for jobs in London citing WebAssembly.
