Period
to 22 November 2017

The following table provides summary statistics for contract job vacancies with a requirement for JNI skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JNI over the 6 months to 22 November 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Java Native Interface (JNI)
UK
6 months to
22 Nov 2017
Same period 2016 Same period 2015
Rank 844 881 893
Rank change year-on-year +37 +12 -56
Contract jobs citing JNI 40 18 11
As % of all contract IT jobs advertised in the UK 0.039% 0.017% 0.010%
As % of the Libraries, Frameworks & Software Standards category 0.12% 0.056% 0.034%
Number of daily rates quoted 39 16 4
UK median daily rate £625 £400 £380
Median daily rate % change year-on-year +56.25% +5.26% -20.00%
10th Percentile £525 £344 £296
90th Percentile £700 £538 £412
UK excluding London median daily rate - £325 £380
% change year-on-year - -14.47% +16.92%
Number of hourly rates quoted 0 0 11
UK median hourly rate - - £40.00
UK excluding London median hourly rate - - £40.00

JNI is in the Software Libraries and Frameworks category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
UK
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 33013 32000 31983
As % of all contract IT jobs advertised in the UK 32.00% 30.35% 28.36%
Number of daily rates quoted 23308 22171 21922
UK median daily rate £450 £425 £410
Median daily rate % change year-on-year +5.88% +3.66% +2.50%
10th Percentile £313 £300 £275
90th Percentile £625 £588 £588
UK excluding London median daily rate £400 £388 £375
% change year-on-year +3.23% +3.33% +7.14%
Number of hourly rates quoted 381 364 549
UK median hourly rate £40.00 £37.50 £37.50
Median hourly rate % change year-on-year +6.67% - +8.70%
10th Percentile £18.50 £14.37 £15.00
90th Percentile £52.50 £51.40 £54.92
UK excluding London median hourly rate £41.00 £37.00 £37.50
% change year-on-year +10.81% -1.33% +10.74%

JNI
Job Vacancy Trend

Job postings citing JNI as a percentage of all IT jobs advertised.

Job vacancy trend for JNI in the UK

JNI
Contractor Daily Rate Trend

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing JNI.

Contractor daily rate trend for JNI in the UK

JNI
Contractor Daily Rate Histogram

The daily rate distribution of IT jobs citing JNI over the 6 months to 22 November 2017.

Contractor daily rate histogram for JNI in the UK

JNI
Contractor Hourly Rate Trend

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing JNI.

Contractor hourly rate trend for JNI in the UK

JNI
Top 2 Contract 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 22 November 2017. 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
Job
Vacancies
England +37 40 £625 +56.25% 1
London -5 40 £625 +49.25% 1

For the 6 months to 22 November 2017, IT contractor jobs citing JNI also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads with a requirement for JNI.

1 39 (97.50%) Java
2 33 (82.50%) Electronic Trading
3 32 (80.00%) C++
4 31 (77.50%) Multithreading
5 30 (75.00%) Low Latency
5 30 (75.00%) Foreign Exchange (FX)
6 29 (72.50%) Equities
6 29 (72.50%) ION Trading
6 29 (72.50%) SDLC
6 29 (72.50%) Greenfield Project
7 24 (60.00%) Finance
8 19 (47.50%) ION MarketView
8 19 (47.50%) C
9 16 (40.00%) Multithreaded Programming
10 13 (32.50%) Front Office
10 13 (32.50%) Banking
11 12 (30.00%) SQL
12 10 (25.00%) Investment Banking
12 10 (25.00%) Degree
12 10 (25.00%) Computer Science
13 4 (10.00%) Maven
14 3 (7.50%) TDD
14 3 (7.50%) Mathematics
14 3 (7.50%) Physics
14 3 (7.50%) Android
14 3 (7.50%) Release Management
14 3 (7.50%) C#
14 3 (7.50%) OOP
14 3 (7.50%) OO
14 3 (7.50%) PhD

JNI
Co-occurring IT Skills by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 2 (5.00%) Oracle Coherence
Business Applications
1 19 (47.50%) ION MarketView
Cloud Services
1 2 (5.00%) Amazon AWS
1 2 (5.00%) GitHub
1 2 (5.00%) SaaS
Database & Business Intelligence
1 2 (5.00%) Apache Cassandra
1 2 (5.00%) Hadoop
1 2 (5.00%) MongoDB
1 2 (5.00%) MySQL
1 2 (5.00%) Oracle Database
1 2 (5.00%) Oracle Reports
2 1 (2.50%) KDB
Development Applications
1 4 (10.00%) Maven
2 2 (5.00%) Bitbucket
2 2 (5.00%) Cucumber
2 2 (5.00%) Eclipse
2 2 (5.00%) Gradle
2 2 (5.00%) IntelliJ
2 2 (5.00%) Jenkins
2 2 (5.00%) JIRA
General
1 24 (60.00%) Finance
2 13 (32.50%) Banking
2 13 (32.50%) Front Office
3 10 (25.00%) Investment Banking
4 1 (2.50%) Games
4 1 (2.50%) Legal
Job Titles
1 33 (82.50%) Developer
2 30 (75.00%) Java Developer
3 23 (57.50%) Low Latency Java Developer
4 22 (55.00%) Electronic Trading Developer
4 22 (55.00%) Electronic Trading Java Developer
5 3 (7.50%) C++ Developer
5 3 (7.50%) Java Quantitative Developer
5 3 (7.50%) Quantitative Developer
5 3 (7.50%) Senior Developer
5 3 (7.50%) Senior Java Developer
6 2 (5.00%) C++/Java Developer
6 2 (5.00%) Core Java Developer
6 2 (5.00%) Full Stack Developer
6 2 (5.00%) Java Engineer
6 2 (5.00%) Oracle Developer
6 2 (5.00%) Programmer
6 2 (5.00%) Senior Oracle Developer
6 2 (5.00%) Senior SQL Developer
6 2 (5.00%) Software Engineer
6 2 (5.00%) SQL Developer
Libraries, Frameworks & Software Standards
1 2 (5.00%) Android SDK
1 2 (5.00%) Dropwizard
1 2 (5.00%) JSON
1 2 (5.00%) OAuth
1 2 (5.00%) OpenGL
1 2 (5.00%) RabbitMQ
1 2 (5.00%) XML
2 1 (2.50%) FIX Protocol
2 1 (2.50%) iOS SDK
2 1 (2.50%) Ultra Messaging
Miscellaneous
1 30 (75.00%) Foreign Exchange (FX)
2 29 (72.50%) Equities
2 29 (72.50%) Greenfield Project
3 10 (25.00%) Computer Science
4 2 (5.00%) Credit Derivative
5 1 (2.50%) Augmented Reality
5 1 (2.50%) Fixed Income
5 1 (2.50%) Mobile Payment
Operating Systems
1 3 (7.50%) Android
2 2 (5.00%) Unix
3 1 (2.50%) Apple iOS
3 1 (2.50%) Linux
Processes & Methodologies
1 33 (82.50%) Electronic Trading
2 31 (77.50%) Multithreading
3 30 (75.00%) Low Latency
4 29 (72.50%) SDLC
5 16 (40.00%) Multithreaded Programming
6 3 (7.50%) Mathematics
6 3 (7.50%) OO
6 3 (7.50%) OOP
6 3 (7.50%) Physics
6 3 (7.50%) Quantitative Research
6 3 (7.50%) Release Management
6 3 (7.50%) TDD
6 3 (7.50%) Test Strategy
7 2 (5.00%) Agile Software Development
7 2 (5.00%) Business Development
7 2 (5.00%) Concurrent Programming
7 2 (5.00%) MapReduce
7 2 (5.00%) Microservices
7 2 (5.00%) OWASP
7 2 (5.00%) Software Engineering
Programming Languages
1 39 (97.50%) Java
2 32 (80.00%) C++
3 19 (47.50%) C
4 12 (30.00%) SQL
5 3 (7.50%) C#
6 2 (5.00%) Go
6 2 (5.00%) JavaScript
Qualifications
1 10 (25.00%) Degree
2 3 (7.50%) Numerate Degree
2 3 (7.50%) PhD
System Software
1 2 (5.00%) Docker
Systems Management
1 2 (5.00%) Hadoop YARN
1 2 (5.00%) Kubernetes
Vendors
1 29 (72.50%) ION Trading
2 2 (5.00%) Oracle