The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for JPA skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JPA over the 3 months to 27 June 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 Persistence API (JPA)
London / City of London
3 months to
27 Jun 2017
Same period 2016 Same period 2015
Rank 153 157 189
Rank change year-on-year +4 +32  
Contract jobs citing JPA 11 6 12
As % of all contract IT jobs advertised in the City of London 0.33% 0.18% 0.21%
As % of the Libraries, Frameworks & Software Standards category 0.88% 0.51% 0.70%
Number of daily rates quoted 7 5 9
Median daily rate £500 £500 £425
Median daily rate % change year-on-year - +17.64%  
90% offered a daily rate of more than £455 £359 £348
10% offered a daily rate of more than £570 £519 £625
UK excluding London median daily rate £422 £420 £375
% change year-on-year +0.47% +12.00%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £52.50 £36.00 £40.00
% change year-on-year +45.83% -10.00%  

JPA is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
City of London
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 1252 1181 1708
As % of all contract IT job vacancies advertised in the City of London 37.89% 34.87% 29.77%
Number of daily rates quoted 1019 1014 1376
Median daily rate £500 £450 £425
Median daily rate % change year-on-year +11.00% +5.88%  
90% offered a daily rate of more than £363 £325 £318
10% offered a daily rate of more than £625 £575 £600
UK excluding London median daily rate £400 £375 £350
% change year-on-year +6.66% +7.14%  
Number of hourly rates quoted 5 1 11
Median hourly rate £24.36 £20.00 £24.23
Median hourly rate % change year-on-year +21.80% -17.45%  
90% offered a hourly rate of more than £21.50 £20.00 £15.64
10% offered a hourly rate of more than £24.86 £20.00 £187.50
UK excluding London median hourly rate £42.50 £36.00 £40.00
% change year-on-year +18.05% -10.00%  

JPA
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing JPA as a proportion of all contract or permanent IT jobs with a match in the Libraries, Frameworks & Software Standards category.

Job vacancy trend for JPA in the City of London

JPA
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for JPA in the City of London

JPA
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing JPA in the City of London over the 3 months to 27 June 2017.

Contractor daily rate histogram for JPA in the City of London

For the 6 months to 27 June 2017, IT contractor jobs citing JPA 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 City of London region with a requirement for JPA.

1 20 (100.00%) Java
1 20 (100.00%) Spring
2 16 (80.00%) Banking
2 16 (80.00%) Maven
3 14 (70.00%) Agile Software Development
3 14 (70.00%) HTML
4 13 (65.00%) Finance
4 13 (65.00%) Jenkins
5 12 (60.00%) TDD
6 11 (55.00%) Hibernate
6 11 (55.00%) JavaScript
6 11 (55.00%) SQL
6 11 (55.00%) Unix
6 11 (55.00%) Spring Boot
7 10 (50.00%) BDD
7 10 (50.00%) JUnit
7 10 (50.00%) Shell Script
7 10 (50.00%) Java EE
8 9 (45.00%) XML
8 9 (45.00%) CSS
8 9 (45.00%) J2EE
8 9 (45.00%) Oracle
8 9 (45.00%) Multithreading
9 8 (40.00%) Selenium
9 8 (40.00%) Microservices
9 8 (40.00%) PL/SQL
9 8 (40.00%) Web Services
9 8 (40.00%) Linux
9 8 (40.00%) OO
9 8 (40.00%) JSON

JPA
Co-occurring IT Skills in the City of 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 7 (35.00%) Mule
2 6 (30.00%) Tomcat
2 6 (30.00%) WebLogic
3 4 (20.00%) WebSphere
4 1 (5.00%) WebSphere Process Server
Business Applications
1 1 (5.00%) Actimize
1 1 (5.00%) Loan IQ
Cloud Services
1 3 (15.00%) Amazon AWS
1 3 (15.00%) Bluemix
1 3 (15.00%) Cloud Computing
1 3 (15.00%) IBM Cloud
Database & Business Intelligence
1 5 (25.00%) RDBMS
1 5 (25.00%) Relational Database
2 3 (15.00%) Big Data
2 3 (15.00%) DB2
2 3 (15.00%) NoSQL
2 3 (15.00%) Qlik Sense
2 3 (15.00%) QlikView
3 1 (5.00%) Oracle Database
Development Applications
1 16 (80.00%) Maven
2 13 (65.00%) Jenkins
3 10 (50.00%) JUnit
4 8 (40.00%) Selenium
5 7 (35.00%) Cucumber
5 7 (35.00%) JIRA
5 7 (35.00%) Mockito
5 7 (35.00%) Subversion
6 6 (30.00%) EasyMock
7 5 (25.00%) Git (software)
8 3 (15.00%) Ant
8 3 (15.00%) Atlassian Bamboo
8 3 (15.00%) Build Forge
8 3 (15.00%) Gradle
8 3 (15.00%) TeamCity
8 3 (15.00%) Vagrant
9 2 (10.00%) Bundler
9 2 (10.00%) gulp
10 1 (5.00%) SoapUI
10 1 (5.00%) SonarQube
General
1 16 (80.00%) Banking
2 13 (65.00%) Finance
3 6 (30.00%) Investment Banking
4 3 (15.00%) Wholesale Banking
Job Titles
1 18 (90.00%) Developer
2 14 (70.00%) Java Developer
3 8 (40.00%) Senior Developer
3 8 (40.00%) Senior Java Developer
4 3 (15.00%) Full Stack Developer
4 3 (15.00%) Lead Developer
5 2 (10.00%) Lead Java Developer
6 1 (5.00%) Architect
6 1 (5.00%) Designer
6 1 (5.00%) J2EE Developer
6 1 (5.00%) Java/J2EE Developer
6 1 (5.00%) Lead Designer
6 1 (5.00%) Market Risk Developer
6 1 (5.00%) Market Risk Java Developer
6 1 (5.00%) Technical Architect
Libraries, Frameworks & Software Standards
1 20 (100.00%) Spring
2 14 (70.00%) HTML
3 11 (55.00%) Hibernate
3 11 (55.00%) Spring Boot
4 10 (50.00%) Java EE
5 9 (45.00%) CSS
5 9 (45.00%) J2EE
5 9 (45.00%) XML
6 8 (40.00%) JSON
6 8 (40.00%) Web Services
7 7 (35.00%) AngularJS
7 7 (35.00%) HTML5
7 7 (35.00%) JAXB
7 7 (35.00%) RESTful
7 7 (35.00%) SOAP
8 6 (30.00%) ActiveMQ
8 6 (30.00%) JMS
8 6 (30.00%) JSP
8 6 (30.00%) REST
8 6 (30.00%) WebSphere MQ
Miscellaneous
1 6 (30.00%) Data Structures
1 6 (30.00%) Foreign Exchange (FX)
2 4 (20.00%) User Experience
3 3 (15.00%) Analytical Skills
4 2 (10.00%) iSeries
5 1 (5.00%) Credit Risk
5 1 (5.00%) Enterprise Software
5 1 (5.00%) Market Risk
5 1 (5.00%) Virtual Team
5 1 (5.00%) Web 2.0
Operating Systems
1 11 (55.00%) Unix
2 8 (40.00%) Linux
3 2 (10.00%) Windows
4 1 (5.00%) Windows Server
Processes & Methodologies
1 14 (70.00%) Agile Software Development
2 12 (60.00%) TDD
3 10 (50.00%) BDD
4 9 (45.00%) Multithreading
5 8 (40.00%) Microservices
5 8 (40.00%) OO
6 7 (35.00%) Continuous Integration
6 7 (35.00%) Unit Testing
7 6 (30.00%) Concurrent Programming
7 6 (30.00%) DevOps
7 6 (30.00%) MVC
7 6 (30.00%) UML
8 5 (25.00%) Scrum
9 4 (20.00%) Open Source
10 3 (15.00%) Analytics
10 3 (15.00%) High Availability
10 3 (15.00%) Information Architecture
10 3 (15.00%) Infrastructure Management
10 3 (15.00%) Mobile Development
11 2 (10.00%) Digital Transformation Programme
Programming Languages
1 20 (100.00%) Java
2 11 (55.00%) JavaScript
2 11 (55.00%) SQL
3 10 (50.00%) Shell Script
4 8 (40.00%) PL/SQL
5 7 (35.00%) Bash Shell
6 4 (20.00%) C++
6 4 (20.00%) Python
System Software
1 3 (15.00%) Docker
Systems Management
1 3 (15.00%) Ansible
2 2 (10.00%) Control-M
3 1 (5.00%) BladeLogic
Vendors
1 9 (45.00%) Oracle
2 5 (25.00%) IBM
3 1 (5.00%) Atlassian
3 1 (5.00%) Calypso
3 1 (5.00%) Murex
3 1 (5.00%) Remedy
3 1 (5.00%) Sybase