Senior JavaScript Developer
East of England > Hertfordshire
As of 24 December 2025, there is not enough information available from job vacancies posted within the last 6 months to determine the median Senior JavaScript Developer salary in Hertfordshire.
| 6 months to 24 Dec 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | - | 103 | 61 |
| Rank change year-on-year | - | -42 | - |
| Permanent jobs requiring a Senior JavaScript Developer | 0 | 1 | 7 |
| As % of all permanent jobs in Hertfordshire | - | 0.078% | 1.07% |
| As % of the Job Titles category | - | 0.090% | 1.13% |
| Number of salaries quoted | 0 | 1 | 7 |
| 10th Percentile | - | - | - |
| 25th Percentile | - | £81,250 | £70,000 |
| Median annual salary (50th Percentile) | - | £82,500 | £75,000 |
| Median % change year-on-year | - | +10.00% | - |
| 75th Percentile | - | £83,750 | £80,000 |
| 90th Percentile | - | - | - |
| East of England median annual salary | £75,000 | £73,750 | £75,000 |
| % change year-on-year | +1.69% | -1.67% | -31.82% |
All Permanent IT Job Vacancies
Hertfordshire
For comparison with the information above, the following table provides summary statistics for all permanent IT job vacancies in Hertfordshire. Most job vacancies include a discernible job title that can be normalized. As such, the figures in the second row provide an indication of the number of permanent jobs in our overall sample.
| Permanent vacancies in Hertfordshire with a recognized job title | 1,440 | 1,107 | 622 |
| % of permanent jobs with a recognized job title | 90.40% | 86.21% | 94.67% |
| Number of salaries quoted | 825 | 502 | 463 |
| 10th Percentile | £28,456 | £31,250 | £31,250 |
| 25th Percentile | £40,000 | £45,000 | £40,000 |
| Median annual salary (50th Percentile) | £52,500 | £55,000 | £55,000 |
| Median % change year-on-year | -4.55% | - | +0.69% |
| 75th Percentile | £65,000 | £70,000 | £67,500 |
| 90th Percentile | £77,000 | £87,500 | £79,100 |
| East of England median annual salary | £50,000 | £52,500 | £54,000 |
| % change year-on-year | -4.76% | -2.78% | +2.86% |
Senior JavaScript Developer
Job Vacancy Trend in Hertfordshire
Historical trend showing the proportion of permanent IT job postings featuring 'Senior JavaScript Developer' in the job title relative to all permanent IT jobs advertised in Hertfordshire.
Senior JavaScript Developer
Salary Trend in Hertfordshire
Salary distribution trend for Senior JavaScript Developer job vacancies in Hertfordshire.
