Java Native Interface (JNI)
UK
The table below provides summary statistics and contractor rates for jobs requiring JNI skills. It covers contract job vacancies from the 6 months leading up to 14 December 2025, with comparisons to the same periods in the previous two years.
| 6 months to 14 Dec 2025 |
Same period 2024 | Same period 2023 | |
|---|---|---|---|
| Rank | 572 | 561 | 606 |
| Rank change year-on-year | -11 | +45 | +184 |
| Contract jobs citing JNI | 9 | 3 | 6 |
| As % of all contract jobs in the UK | 0.025% | 0.009% | 0.013% |
| As % of the Libraries, Frameworks & Software Standards category | 0.11% | 0.040% | 0.061% |
| Number of daily rates quoted | 4 | 2 | 5 |
| 10th Percentile | - | £579 | £558 |
| 25th Percentile | £375 | £591 | £700 |
| Median daily rate (50th Percentile) | £450 | £657 | £750 |
| Median % change year-on-year | -31.51% | -12.40% | +15.38% |
| 75th Percentile | £525 | £727 | £800 |
| 90th Percentile | - | £741 | £823 |
| UK excluding London median daily rate | - | - | £475 |
| % change year-on-year | - | - | -13.64% |
| Number of hourly rates quoted | 1 | 1 | 0 |
| 10th Percentile | - | - | - |
| 25th Percentile | £51.75 | £69.00 | - |
| Median hourly rate | £56.50 | £70.00 | - |
| Median % change year-on-year | -19.29% | - | - |
| 75th Percentile | £61.25 | £71.00 | - |
| 90th Percentile | - | - | - |
| UK excluding London median hourly rate | - | - | - |
All Software Libraries and Frameworks
UK
JNI 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.
| Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills | 8,189 | 7,567 | 9,848 |
| As % of all contract IT jobs advertised in the UK | 22.47% | 21.88% | 22.11% |
| Number of daily rates quoted | 5,414 | 4,793 | 6,998 |
| 10th Percentile | £351 | £350 | £363 |
| 25th Percentile | £413 | £425 | £440 |
| Median daily rate (50th Percentile) | £505 | £550 | £550 |
| Median % change year-on-year | -8.18% | - | -4.35% |
| 75th Percentile | £625 | £650 | £650 |
| 90th Percentile | £725 | £775 | £750 |
| UK excluding London median daily rate | £488 | £500 | £500 |
| % change year-on-year | -2.50% | - | -4.76% |
| Number of hourly rates quoted | 204 | 105 | 175 |
| 10th Percentile | £30.40 | £21.55 | £31.55 |
| 25th Percentile | £43.00 | £36.25 | £46.18 |
| Median hourly rate | £57.50 | £62.50 | £52.50 |
| Median % change year-on-year | -8.00% | +19.05% | -19.23% |
| 75th Percentile | £67.00 | £65.75 | £70.00 |
| 90th Percentile | £80.40 | £74.70 | £78.00 |
| UK excluding London median hourly rate | £64.00 | £65.00 | £51.89 |
| % change year-on-year | -1.54% | +25.26% | -20.17% |
JNI
Job Vacancy Trend
Historical trend showing the proportion of contract IT job postings citing JNI relative to all contract IT jobs advertised.
JNI
Daily Rate Trend
Contractor daily rate distribution trend for jobs in the UK citing JNI.
JNI
Hourly Rate Trend
Contractor hourly rate distribution trend for jobs in the UK citing JNI.
JNI
Top 2 Contract Job Locations
The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing JNI within the UK over the 6 months to 14 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 Contract IT Job Ads |
Median Daily Rate Past 6 Months |
Median Daily Rate % Change on Same Period Last Year |
Live Jobs |
|---|---|---|---|---|---|
| England | -31 | 9 | £450 | -31.51% | 5 |
| London | +5 | 8 | £450 | -31.51% | 1 |
JNI
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:
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