The table below looks at the statistics for JNI skills in IT contracts advertised across the UK. Included is a guide to the average contractor rates offered in IT contracts that have cited JNI over the 3 months to 27 March 2015 with a comparison to the same period in the previous 2 years.

Note that daily contractor rates and hourly contractor rates are treated separately. When calculating average contractor rates, daily rates are not derived from quoted hourly rates or vice versa.

Location
3 months to
27 Mar 2015
Same period 2014 Same period 2013
Java Native Interface (JNI)
Rank 583 569 522
Rank change year-on-year
-14 -47
Contract jobs citing JNI 16 1 18
As % of all contract IT jobs located in the UK 0.030% 0.002% 0.039%
As % of the Libraries, Frameworks & Software Standards category 0.11% 0.007% 0.14%
Number of daily rates quoted 11 1 15
Average daily rate
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£650 £475 £350
Average daily rate % change year-on-year
+36.84% +35.71%
UK excluding London average daily rate £344 - £350
Number of hourly rates quoted 0 0 0
Average hourly rate - - -
UK excluding London average hourly rate - - -

The following table is for comparison with the above and provides statistics for the entire Libraries, Frameworks & Software Standards category in contract jobs advertised across the UK.

Libraries, Frameworks & Software Standards Category
UK
Contract IT job ads with a match in the
Libraries, Frameworks & Software Standards category
14151 14119 12451
As % of all contract IT jobs located in the UK 26.37% 27.20% 27.03%
Number of daily rates quoted 9202 8972 7852
Average daily rate £388 £375 £363
Average daily rate % change year-on-year
+3.33% +3.44%
90% offered a daily rate of more than £275 £260 £260
10% offered a daily rate of more than £546 £525 £550
UK excluding London average daily rate £350 £330 £325
% change year-on-year
+6.06% +1.53%
Number of hourly rates quoted 179 221 325
Average hourly rate £35.00 £35.00 £35.00
90% offered a hourly rate of more than £18.31 £16.87 £17.00
10% offered a hourly rate of more than £46.50 £53.50 £43.50
UK excluding London average hourly rate £36.00 £35.00 £35.00
% change year-on-year
+2.85% -

JNI
Jobs Demand Trend

This chart provides the 3-month moving total of IT contractor jobs citing JNI within the UK as a proportion of the total demand within the Libraries, Frameworks & Software Standards category.

JNI Jobs Demand Trend in the UK

JNI
Daily Rate Trend

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

JNI Daily Rate Trend in the UK

JNI
Daily Rate Histogram

This chart provides a histogram of daily rates quoted in contract IT jobs citing JNI within the UK over the 3 months to 27 March 2015.

JNI Daily Rate Histogram in the UK

JNI
Hourly Rate Trend

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

JNI Hourly Rate Trend in the UK

JNI
Top 9 Contract Locations

The table below looks at the demand and provides a guide to the average contractor rates quoted in IT jobs citing JNI within the UK over the 3 months to 27 March 2015. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location
(Use links below to see detailed
statistics and historical trends)
Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Average
Daily Rate
Last 3 Months
Average Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +6 16 £650 +36.84% 1
East of England - 1 £300 -
Scotland - - - - 1
Bridgend - - - -
Edinburgh - - - - 1
Norwich - - - -
Norfolk - - - -
South Wales - - - -
Wales - - - -

JNI
Top 30 Related IT Skills

For the 6 months to 27 March 2015, IT contractor jobs within the UK citing JNI also mentioned the following IT skills in order of popularity. The figures indicate the number of jobs and their proportion against the total number of contract IT job ads sampled that cited JNI.

1 35 (97.22%) Java
2 22 (61.11%) Android
3 20 (55.56%) Android NDK
4 17 (47.22%) Android Development
5 15 (41.67%) Git (software)
6 14 (38.89%) Unit Testing
6 14 (38.89%) Subversion
6 14 (38.89%) Jenkins
6 14 (38.89%) C++
7 13 (36.11%) Ant
7 13 (36.11%) Publishing
7 13 (36.11%) Android SDK
7 13 (36.11%) Maven
7 13 (36.11%) Atlassian Bamboo
8 12 (33.33%) Finance
9 11 (30.56%) Agile Software Development
9 11 (30.56%) OO
9 11 (30.56%) Multithreading
10 10 (27.78%) Electronic Trading
10 10 (27.78%) ION MarketView
10 10 (27.78%) ION Trading
10 10 (27.78%) Low Latency
11 9 (25.00%) OOP
11 9 (25.00%) C
11 9 (25.00%) Artifactory
11 9 (25.00%) Appium
11 9 (25.00%) RoboGuice
11 9 (25.00%) Mockito
11 9 (25.00%) REST
11 9 (25.00%) Robotium

JNI
Top Related IT Skills by Category

For the 6 months to 27 March 2015, IT contractor jobs within the UK citing JNI also mentioned the following IT skills grouped by category. The figures indicate the number of jobs and their proportion against the total number of contract IT job ads sampled that cited JNI. Up to 20 skills are shown per category.

Business Applications
1 10 (27.78%) ION MarketView
Communications & Networking
1 6 (16.67%) NFC
2 2 (5.56%) TCP/IP
3 1 (2.78%) DVB
3 1 (2.78%) VLAN
3 1 (2.78%) Bluetooth
3 1 (2.78%) FTP
3 1 (2.78%) NAS
3 1 (2.78%) DLNA
Database & Business Intelligence
1 1 (2.78%) Big Data
Development Applications
1 15 (41.67%) Git (software)
2 14 (38.89%) Subversion
2 14 (38.89%) Jenkins
3 13 (36.11%) Maven
3 13 (36.11%) Atlassian Bamboo
3 13 (36.11%) Ant
4 9 (25.00%) Mockito
4 9 (25.00%) Appium
4 9 (25.00%) Robotium
4 9 (25.00%) Artifactory
5 1 (2.78%) Appcelerator Titanium
5 1 (2.78%) Mercurial
5 1 (2.78%) NetBeans
General
1 13 (36.11%) Publishing
2 12 (33.33%) Finance
3 3 (8.33%) Banking
4 2 (5.56%) Investment Banking
4 2 (5.56%) Legal
5 1 (2.78%) Electronics
Job Titles
1 29 (80.56%) Developer
2 13 (36.11%) Android Developer
3 10 (27.78%) Java Developer
4 5 (13.89%) C++ Developer
4 5 (13.89%) C++/Java Developer
5 4 (11.11%) Senior Developer
6 3 (8.33%) Senior Java Developer
7 2 (5.56%) Software Engineer
8 1 (2.78%) Programmer
8 1 (2.78%) Senior Android Developer
8 1 (2.78%) Embedded C Engineer
8 1 (2.78%) C Developer
8 1 (2.78%) C Software Engineer
8 1 (2.78%) Software Programmer
8 1 (2.78%) Embedded Software Engineer
8 1 (2.78%) C++ Software Engineer
8 1 (2.78%) Embedded C Software Engineer
8 1 (2.78%) Java Programmer
Libraries, Frameworks & Software Standards
1 20 (55.56%) Android NDK
2 13 (36.11%) Android SDK
3 9 (25.00%) RoboGuice
3 9 (25.00%) REST
3 9 (25.00%) JSON
4 7 (19.44%) Middleware
5 6 (16.67%) Rendezvous
6 4 (11.11%) iOS SDK
7 2 (5.56%) HTML5
7 2 (5.56%) HTML
7 2 (5.56%) CSS
8 1 (2.78%) Swing
8 1 (2.78%) Java SE
8 1 (2.78%) PhoneGap
8 1 (2.78%) Backbone.js
8 1 (2.78%) WinRT
Miscellaneous
1 8 (22.22%) Foreign Exchange (FX)
1 8 (22.22%) Equities
2 6 (16.67%) Computer Science
3 1 (2.78%) Video on Demand
3 1 (2.78%) Enterprise Storage
3 1 (2.78%) Embedded Systems
3 1 (2.78%) Mobile App
3 1 (2.78%) Algorithms
3 1 (2.78%) STB
3 1 (2.78%) Cryptography
3 1 (2.78%) MPEG
3 1 (2.78%) iDTV
3 1 (2.78%) DTV
3 1 (2.78%) Mainframe
3 1 (2.78%) Fixed Income
3 1 (2.78%) VHDL
3 1 (2.78%) Verilog
Operating Systems
1 22 (61.11%) Android
2 8 (22.22%) Windows
3 5 (13.89%) Linux
3 5 (13.89%) Apple iOS
4 1 (2.78%) Windows Phone
4 1 (2.78%) UNIX
4 1 (2.78%) OpenVMS
4 1 (2.78%) zOS
4 1 (2.78%) MVS
4 1 (2.78%) Tru64
4 1 (2.78%) AIX
4 1 (2.78%) HPUX
4 1 (2.78%) Solaris
Processes & Methodologies
1 17 (47.22%) Android Development
2 14 (38.89%) Unit Testing
3 11 (30.56%) Multithreading
3 11 (30.56%) OO
3 11 (30.56%) Agile Software Development
4 10 (27.78%) Electronic Trading
4 10 (27.78%) Low Latency
5 9 (25.00%) Dependency Injection
5 9 (25.00%) Continuous Integration
5 9 (25.00%) Automated Testing
5 9 (25.00%) OOP
6 8 (22.22%) User Stories
7 6 (16.67%) Business Transformation
7 6 (16.67%) Market Making
8 4 (11.11%) iOS Development
8 4 (11.11%) TDD
9 3 (8.33%) Software Engineering
10 1 (2.78%) Refactoring
10 1 (2.78%) Software Architecture
10 1 (2.78%) Memory Management
Programming Languages
1 35 (97.22%) Java
2 14 (38.89%) C++
3 9 (25.00%) C
4 7 (19.44%) C#
5 2 (5.56%) JavaScript
6 1 (2.78%) Perl
6 1 (2.78%) Python
6 1 (2.78%) Embedded C
6 1 (2.78%) Embedded C++
6 1 (2.78%) Objective-C
6 1 (2.78%) Bash Shell
Qualifications
1 5 (13.89%) Degree
Vendors
1 10 (27.78%) ION Trading
2 6 (16.67%) TIBCO
3 1 (2.78%) VMware
3 1 (2.78%) Brocade
3 1 (2.78%) Xamarin
3 1 (2.78%) Oracle
3 1 (2.78%) Cisco
3 1 (2.78%) IBM
3 1 (2.78%) Microsoft
3 1 (2.78%) EMC
3 1 (2.78%) Hitachi
3 1 (2.78%) Novell
3 1 (2.78%) Veritas