Period
to 21 November 2017

The following table provides summary statistics for permanent job vacancies advertised in London with a requirement for JNI skills. Included is a benchmarking guide to the salaries 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.

Java Native Interface (JNI)
England > London
6 months to
21 Nov 2017
Same period 2016 Same period 2015
Rank 797 848 907
Rank change year-on-year +51 +59 0
Permanent jobs citing JNI 35 9 4
As % of all permanent IT jobs advertised in London 0.046% 0.012% 0.005%
As % of the Libraries, Frameworks & Software Standards category 0.12% 0.030% 0.012%
Number of salaries quoted 18 7 4
London median annual salary £45,000 £70,000 £54,250
Median salary % change year-on-year -35.71% +29.03% -22.50%
10th Percentile £37,500 £65,000 £52,125
90th Percentile £95,000 £90,000 £56,375
England median annual salary £43,750 £70,000 £75,000
% change year-on-year -37.50% -6.67% +7.14%

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

All Software Libraries and Frameworks
London
Permanent vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 29461 30394 33319
As % of all permanent IT jobs advertised in London 39.00% 40.16% 37.63%
Number of salaries quoted 24005 26789 28544
London median annual salary £60,000 £58,000 £55,000
Median salary % change year-on-year +3.45% +5.45% +4.76%
10th Percentile £36,250 £35,000 £34,500
90th Percentile £88,900 £86,250 £83,750
England median annual salary £50,000 £47,500 £45,000
% change year-on-year +5.26% +5.56% -

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
Salary Trend in London

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing JNI in London.

Salary trend for JNI in London

JNI
Salary Histogram in London

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

Salary histogram for JNI in London

JNI
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing JNI within the London region over the 6 months to 21 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Central London +14 4 £45,000 -47.06%
West London - 1 £40,000 -
JNI
England

For the 6 months to 21 November 2017, IT jobs citing JNI also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the London region with a requirement for JNI.

1 30 (85.71%) Java
2 28 (80.00%) C++
3 23 (65.71%) Linux
4 19 (54.29%) C
4 19 (54.29%) Software Engineering
5 16 (45.71%) Android
6 12 (34.29%) Fixed Income
6 12 (34.29%) Derivative
6 12 (34.29%) Interest Rate Derivative
6 12 (34.29%) ZeroMQ
6 12 (34.29%) React
7 10 (28.57%) Apache Spark
7 10 (28.57%) Apache Hive
7 10 (28.57%) Apache Cassandra
7 10 (28.57%) Apple iOS
7 10 (28.57%) Kafka
7 10 (28.57%) Apache
8 8 (22.86%) Front Office
8 8 (22.86%) Finance
8 8 (22.86%) Google
9 7 (20.00%) Multithreading
9 7 (20.00%) Low Latency
9 7 (20.00%) Mobile App
9 7 (20.00%) SDLC
10 6 (17.14%) Mobile Development
10 6 (17.14%) AngularJS
10 6 (17.14%) ION MarketView
10 6 (17.14%) Electronic Trading
10 6 (17.14%) Computer Science
10 6 (17.14%) Equities

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 10 (28.57%) Apache
1 10 (28.57%) Apache Spark
2 1 (2.86%) Ethereum
Applications
1 4 (11.43%) Microsoft Excel
Business Applications
1 6 (17.14%) ION MarketView
Cloud Services
1 3 (8.57%) Google Play
2 1 (2.86%) GitHub
Communications & Networking
1 6 (17.14%) Bluetooth
2 3 (8.57%) HTTP
2 3 (8.57%) SSH
2 3 (8.57%) VoIP
Database & Business Intelligence
1 10 (28.57%) Apache Cassandra
1 10 (28.57%) Apache Hive
2 4 (11.43%) Berkeley DB
3 2 (5.71%) GIS
4 1 (2.86%) Blockchain
Development Applications
1 4 (11.43%) Git (software)
2 3 (8.57%) JIRA
3 1 (2.86%) Bitbucket
3 1 (2.86%) Jenkins
General
1 8 (22.86%) Finance
1 8 (22.86%) Front Office
2 3 (8.57%) Military
3 1 (2.86%) Banking
3 1 (2.86%) Legal
Job Titles
1 19 (54.29%) Software Engineer
2 15 (42.86%) Developer
3 7 (20.00%) Java Developer
4 6 (17.14%) C Software Engineer
4 6 (17.14%) C/C++ Embedded Software Engineer
4 6 (17.14%) C/C++ Software Engineer
4 6 (17.14%) C++ Software Engineer
4 6 (17.14%) Electronic Trading Developer
4 6 (17.14%) Embedded C Engineer
4 6 (17.14%) Embedded C Software Engineer
4 6 (17.14%) Embedded C/C++ Engineer
4 6 (17.14%) Embedded C/C++ Software Engineer
4 6 (17.14%) Embedded C++ Engineer
4 6 (17.14%) Embedded C++ Software Engineer
4 6 (17.14%) Embedded Engineer
4 6 (17.14%) Embedded Linux Engineer
4 6 (17.14%) Embedded Linux Software Engineer
4 6 (17.14%) Embedded Software Engineer
4 6 (17.14%) Linux Engineer
4 6 (17.14%) Senior Software Engineer
Libraries, Frameworks & Software Standards
1 12 (34.29%) React
1 12 (34.29%) ZeroMQ
2 10 (28.57%) Kafka
3 6 (17.14%) AngularJS
4 5 (14.29%) REST
5 4 (11.43%) Android SDK
5 4 (11.43%) Angular 2
5 4 (11.43%) Protocol Buffers
6 3 (8.57%) XMPP
7 2 (5.71%) .NET
7 2 (5.71%) J2EE
7 2 (5.71%) JSON
8 1 (2.86%) CSS
8 1 (2.86%) HTML
8 1 (2.86%) JAX-RS
8 1 (2.86%) XML
Miscellaneous
1 12 (34.29%) Derivative
1 12 (34.29%) Fixed Income
1 12 (34.29%) Interest Rate Derivative
2 7 (20.00%) Mobile App
3 6 (17.14%) Computer Science
3 6 (17.14%) EMV
3 6 (17.14%) EPoS
3 6 (17.14%) Equities
3 6 (17.14%) Foreign Exchange (FX)
3 6 (17.14%) Smartcard
4 2 (5.71%) Virtual Team
5 1 (2.86%) Algorithms
5 1 (2.86%) Analytical Skills
5 1 (2.86%) Bitcoin
5 1 (2.86%) Fintech
Operating Systems
1 23 (65.71%) Linux
2 16 (45.71%) Android
3 10 (28.57%) Apple iOS
4 4 (11.43%) openSUSE
4 4 (11.43%) Red Hat Enterprise Linux
4 4 (11.43%) SUSE
5 3 (8.57%) Windows
Processes & Methodologies
1 19 (54.29%) Software Engineering
2 7 (20.00%) Low Latency
2 7 (20.00%) Multithreading
2 7 (20.00%) SDLC
3 6 (17.14%) Electronic Trading
3 6 (17.14%) Mobile Development
4 5 (14.29%) Android Development
4 5 (14.29%) Mathematics
5 4 (11.43%) Analytics
5 4 (11.43%) Risk Management
6 3 (8.57%) Secure Coding
6 3 (8.57%) Test Automation
7 2 (5.71%) Collaborative Working
7 2 (5.71%) Performance Measurement
7 2 (5.71%) Security Management
7 2 (5.71%) Security Monitoring
7 2 (5.71%) Security Operations
7 2 (5.71%) Software Delivery
7 2 (5.71%) Threat Modelling
7 2 (5.71%) Time Management
Programming Languages
1 30 (85.71%) Java
2 28 (80.00%) C++
3 19 (54.29%) C
4 6 (17.14%) Embedded C
4 6 (17.14%) Embedded C++
5 5 (14.29%) JavaScript
5 5 (14.29%) Objective-C
6 4 (11.43%) VBA
7 3 (8.57%) Bash Shell
7 3 (8.57%) Kotlin
8 2 (5.71%) C#
9 1 (2.86%) Apple Swift
9 1 (2.86%) SQL
Qualifications
1 5 (14.29%) Degree
2 3 (8.57%) Security Cleared
Systems Management
1 4 (11.43%) Grafana
1 4 (11.43%) Graphite
Vendors
1 8 (22.86%) Google
2 6 (17.14%) ION Trading