WebAssembly (Wasm)
UK
The table below provides summary statistics and salary benchmarking for jobs requiring WebAssembly skills. It covers permanent job vacancies from the 6 months leading up to 6 December 2025, with comparisons to the same periods in the previous two years.
| 6 months to 6 Dec 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | 642 | 748 | 683 |
| Rank change year-on-year | +106 | -65 | +373 |
| Permanent jobs citing WebAssembly | 5 | 4 | 38 |
| As % of all permanent jobs in the UK | 0.009% | 0.006% | 0.076% |
| As % of the Libraries, Frameworks & Software Standards category | 0.071% | 0.030% | 0.29% |
| Number of salaries quoted | 5 | 1 | 19 |
| 10th Percentile | - | - | £47,000 |
| 25th Percentile | £27,875 | £65,000 | £58,500 |
| Median annual salary (50th Percentile) | £50,000 | £70,000 | £70,000 |
| Median % change year-on-year | -28.57% | - | +75.00% |
| 75th Percentile | £70,250 | £75,000 | £95,000 |
| 90th Percentile | - | - | - |
| UK excluding London median annual salary | £50,000 | - | £65,799 |
| % change year-on-year | - | - | +64.50% |
All Software Libraries and Frameworks
UK
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.
| Permanent vacancies with a requirement for technical specification, industry standards, software libraries and framework skills | 7,024 | 13,372 | 13,288 |
| As % of all permanent jobs advertised in the UK | 12.58% | 21.29% | 26.42% |
| Number of salaries quoted | 5,206 | 8,114 | 10,962 |
| 10th Percentile | £36,250 | £38,750 | £41,250 |
| 25th Percentile | £50,000 | £48,750 | £51,250 |
| Median annual salary (50th Percentile) | £67,500 | £65,000 | £66,000 |
| Median % change year-on-year | +3.85% | -1.52% | +1.54% |
| 75th Percentile | £86,250 | £85,000 | £85,000 |
| 90th Percentile | £113,750 | £108,750 | £106,289 |
| UK excluding London median annual salary | £57,500 | £57,500 | £57,500 |
WebAssembly
Job Vacancy Trend
Historical trend showing the proportion of permanent IT job postings citing WebAssembly relative to all permanent IT jobs advertised.
WebAssembly
Salary Trend
Salary distribution trend for jobs in the UK citing WebAssembly.
WebAssembly
Salary Histogram
Salary distribution for jobs citing WebAssembly over the 6 months to 6 December 2025.
WebAssembly
Top 7 Job Locations
The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing WebAssembly within the UK over the 6 months to 6 December 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 |
|---|---|---|---|---|---|
| England | +93 | 5 | £50,000 | -28.57% | 4 |
| UK excluding London | +89 | 5 | £50,000 | - | 2 |
| North of England | - | 4 | £49,625 | - | |
| North East | - | 4 | £49,625 | - | |
| Work from Home | +80 | 3 | £68,500 | -2.14% | 1 |
| Midlands | - | 1 | £50,000 | - | 1 |
| West Midlands | - | 1 | £50,000 | - | 1 |
WebAssembly
Co-Occurring Skills & Capabilities 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: