JSON
Central London > City of London
The table below provides summary statistics for contract job vacancies advertised in the City of London requiring JSON skills. It includes a benchmarking guide to the contractor rates offered in vacancies that cited JSON over the 6 months leading up to 1 May 2025, comparing them to the same period in the previous two years.
| 6 months to 1 May 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | 93 | 96 | 131 |
| Rank change year-on-year | +3 | +35 | +9 |
| Contract jobs citing JSON | 26 | 31 | 47 |
| As % of all contract jobs advertised in the City of London | 1.48% | 1.41% | 1.29% |
| As % of the Libraries, Frameworks & Software Standards category | 5.43% | 6.46% | 4.52% |
| Number of daily rates quoted | 21 | 26 | 33 |
| 10th Percentile | £409 | £413 | £382 |
| 25th Percentile | £454 | £428 | £513 |
| Median daily rate (50th Percentile) | £500 | £525 | £595 |
| Median % change year-on-year | -4.76% | -11.76% | +3.03% |
| 75th Percentile | £640 | £688 | £788 |
| 90th Percentile | £663 | £775 | £820 |
| Central London median daily rate | £506 | £525 | £595 |
| % change year-on-year | -3.57% | -11.76% | +2.59% |
All Software Libraries and Frameworks
City of London
JSON falls under the Software Libraries and Frameworks category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring technical specification, industry standards, software libraries and framework skills in the City of London.
| Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills | 479 | 480 | 1,040 |
| As % of all contract IT jobs advertised in the City of London | 27.28% | 21.85% | 28.55% |
| Number of daily rates quoted | 311 | 343 | 676 |
| 10th Percentile | £413 | £401 | £425 |
| 25th Percentile | £463 | £463 | £506 |
| Median daily rate (50th Percentile) | £575 | £563 | £625 |
| Median % change year-on-year | +2.22% | -10.00% | +4.17% |
| 75th Percentile | £688 | £688 | £738 |
| 90th Percentile | £775 | £775 | £825 |
| Central London median daily rate | £575 | £551 | £625 |
| % change year-on-year | +4.45% | -11.92% | +4.17% |
JSON
Job Vacancy Trend in the City of London
Job postings citing JSON as a proportion of all IT jobs advertised in the City of London.
JSON
Contractor Daily Rate Trend in the City of London
3-month moving average daily rate quoted in jobs citing JSON in the City of London.
JSON
Daily Rate Histogram in the City of London
Daily rate distribution for jobs citing JSON in the City of London over the 6 months to 1 May 2025.
JSON
Contractor Hourly Rate Trend in the City of London
3-month moving average hourly rates quoted in jobs citing JSON in the City of London.
JSON
Co-occurring Skills and Capabilities in the City of London by Category
The follow tables expand on the table above by listing co-occurrences grouped by category. The same employment type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:
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