Chai Assertion Library (Chai.js)
England > London
The table below provides summary statistics for permanent job vacancies advertised in London requiring Chai skills. It includes a benchmarking guide to the annual salaries offered in vacancies that cited Chai over the 6 months leading up to 3 August 2025, comparing them to the same period in the previous two years.
|
|
6 months to
3 Aug 2025 |
Same period 2024 |
Same period 2023 |
| Rank |
404 |
451 |
533 |
| Rank change year-on-year |
+47 |
+82 |
+149 |
| Permanent jobs citing Chai |
5 |
5 |
17 |
| As % of all permanent jobs advertised in London |
0.038% |
0.025% |
0.065% |
| As % of the Libraries, Frameworks & Software Standards category |
0.14% |
0.10% |
0.20% |
| Number of salaries quoted |
1 |
0 |
12 |
| 10th Percentile |
- |
- |
- |
| 25th Percentile |
£41,250 |
- |
£65,000 |
| Median annual salary (50th Percentile) |
£42,500 |
- |
£70,000 |
| Median % change year-on-year |
- |
- |
+27.27% |
| 75th Percentile |
£43,750 |
- |
£75,000 |
| 90th Percentile |
- |
- |
- |
| England median annual salary |
£42,500 |
£42,500 |
£65,000 |
| % change year-on-year |
- |
-34.62% |
+18.18% |
Chai 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 |
3,541 |
4,945 |
8,357 |
| As % of all permanent jobs advertised in London |
27.11% |
24.77% |
31.80% |
| Number of salaries quoted |
2,284 |
3,675 |
6,939 |
| 10th Percentile |
£51,250 |
£49,543 |
£50,000 |
| 25th Percentile |
£63,750 |
£62,500 |
£62,500 |
| Median annual salary (50th Percentile) |
£85,000 |
£85,000 |
£80,000 |
| Median % change year-on-year |
- |
+6.25% |
+6.67% |
| 75th Percentile |
£111,250 |
£113,750 |
£100,000 |
| 90th Percentile |
£135,000 |
£142,500 |
£120,000 |
| England median annual salary |
£67,500 |
£62,500 |
£67,500 |
| % change year-on-year |
+8.00% |
-7.41% |
+3.85% |
