Period
to 21 November 2017

The following table provides summary statistics for contract job vacancies advertised in London 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 21 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)
England > London
6 months to
21 Nov 2017
Same period 2016 Same period 2015
Rank 594 601 609
Rank change year-on-year +7 +8 -10
Contract jobs citing JNI 40 14 1
As % of all contract IT jobs advertised in London 0.085% 0.031% 0.002%
As % of the Libraries, Frameworks & Software Standards category 0.23% 0.091% 0.007%
Number of daily rates quoted 39 14 1
London median daily rate £625 £419 £400
Median daily rate % change year-on-year +49.25% +4.69% -29.05%
10th Percentile £525 £375 £375
90th Percentile £700 £538 £425
England median daily rate £625 £400 £380
% change year-on-year +56.25% +5.26% -20.00%
Number of hourly rates quoted 0 0 0
London median hourly rate - - -
England 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 advertised in London with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
London
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 17463 15419 15021
As % of all contract IT jobs advertised in London 37.10% 34.32% 32.27%
Number of daily rates quoted 13339 11542 11183
London median daily rate £500 £465 £450
Median daily rate % change year-on-year +7.53% +3.33% +5.88%
10th Percentile £350 £319 £308
90th Percentile £650 £625 £625
England median daily rate £463 £425 £413
% change year-on-year +8.82% +3.03% +3.13%
Number of hourly rates quoted 103 72 92
London median hourly rate £30.75 £40.00 £35.75
Median hourly rate % change year-on-year -23.13% +11.89% +2.14%
10th Percentile £19.09 £19.23 £14.25
90th Percentile £49.75 £57.44 £58.75
England median hourly rate £40.00 £37.50 £37.50
% change year-on-year +6.67% - +10.29%

JNI
Job Vacancy Trend in London

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

Job vacancy trend for JNI in London

JNI
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for JNI in London

JNI
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing JNI in London over the 6 months to 21 November 2017.

Contractor daily rate histogram for JNI in London

JNI
Contractor Hourly Rate Trend in London

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

Contractor hourly rate trend for JNI in London

For the 6 months to 21 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 across the London region 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 in London 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