Period
to 23 November 2017

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 6 months to 23 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 Persistence API (JPA)
Central London > City of London
6 months to
23 Nov 2017
Same period 2016 Same period 2015
Rank 232 218 258
Rank change year-on-year -14 +40 +36
Contract jobs citing JPA 16 23 14
As % of all contract IT jobs advertised in the City of London 0.22% 0.34% 0.15%
As % of the Libraries, Frameworks & Software Standards category 0.59% 0.96% 0.50%
Number of daily rates quoted 11 23 11
City of London median daily rate £513 £525 £575
Median daily rate % change year-on-year -2.38% -8.70% +31.43%
10th Percentile £467 £344 £440
90th Percentile £575 £563 £725
Central London median daily rate £500 £525 £575
% change year-on-year -4.76% -8.70% +31.43%
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

JPA 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 the City of London with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
City of London
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 2696 2403 2806
As % of all contract IT jobs advertised in the City of London 37.76% 35.88% 31.03%
Number of daily rates quoted 2265 2031 2316
City of London median daily rate £513 £475 £475
Median daily rate % change year-on-year +7.89% - +5.56%
10th Percentile £363 £325 £313
90th Percentile £675 £638 £638
Central London median daily rate £500 £475 £464
% change year-on-year +5.26% +2.43% +9.12%
Number of hourly rates quoted 10 4 14
City of London median hourly rate £22.99 £35.00 £38.75
Median hourly rate % change year-on-year -34.31% -9.68% +29.17%
10th Percentile £20.28 £19.00 £12.40
90th Percentile £33.75 £56.31 £66.25
Central London median hourly rate £21.50 £35.00 £38.75
% change year-on-year -38.57% -9.68% +29.17%

JPA
Job Vacancy Trend in the City of London

Job postings citing JPA as a percentage of all IT jobs advertised in the City of London.

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 6 months to 23 November 2017.

Contractor daily rate histogram for JPA in the City of London

For the 6 months to 23 November 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 16 (100.00%) Java
2 13 (81.25%) Web Services
2 13 (81.25%) Agile Software Development
2 13 (81.25%) RESTful
3 10 (62.50%) Spring
4 9 (56.25%) TDD
4 9 (56.25%) Hibernate
4 9 (56.25%) BDD
4 9 (56.25%) Jenkins
5 8 (50.00%) Docker
5 8 (50.00%) Big Data
5 8 (50.00%) Maven
5 8 (50.00%) Digital Transformation Programme
6 7 (43.75%) JSON
6 7 (43.75%) HTML
6 7 (43.75%) AngularJS
6 7 (43.75%) REST
6 7 (43.75%) DevOps
6 7 (43.75%) Microservices
6 7 (43.75%) HTML5
7 6 (37.50%) Confluence
7 6 (37.50%) Performance Testing
7 6 (37.50%) JIRA
7 6 (37.50%) Banking
7 6 (37.50%) Spring Boot
8 5 (31.25%) JSON Schema
8 5 (31.25%) Scrum
8 5 (31.25%) Pair Programming
8 5 (31.25%) Finance
8 5 (31.25%) PostgreSQL

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 6 (37.50%) Confluence
2 4 (25.00%) WebSphere
3 1 (6.25%) Apache
3 1 (6.25%) IIS
3 1 (6.25%) JBoss
3 1 (6.25%) Oracle SOA Suite
3 1 (6.25%) Tomcat
3 1 (6.25%) WebSphere Application Server
Cloud Services
1 5 (31.25%) Amazon AWS
2 3 (18.75%) Bluemix
2 3 (18.75%) Cloud Computing
2 3 (18.75%) IBM Cloud
3 1 (6.25%) Amazon EC2
3 1 (6.25%) Amazon ELB
3 1 (6.25%) GitHub
3 1 (6.25%) IaaS
3 1 (6.25%) PaaS
3 1 (6.25%) SaaS
Communications & Networking
1 1 (6.25%) BIG-IP
1 1 (6.25%) Firewall
1 1 (6.25%) LDAP
1 1 (6.25%) NetScaler
1 1 (6.25%) TCP/IP
1 1 (6.25%) VPN
Database & Business Intelligence
1 8 (50.00%) Big Data
2 5 (31.25%) Hadoop
2 5 (31.25%) HBase
2 5 (31.25%) MongoDB
2 5 (31.25%) PostgreSQL
3 3 (18.75%) NoSQL
3 3 (18.75%) Qlik Sense
3 3 (18.75%) QlikView
3 3 (18.75%) RDBMS
3 3 (18.75%) Relational Database
Development Applications
1 9 (56.25%) Jenkins
2 8 (50.00%) Maven
3 6 (37.50%) JIRA
4 4 (25.00%) Ant
5 3 (18.75%) Build Forge
5 3 (18.75%) Git (software)
5 3 (18.75%) Gradle
5 3 (18.75%) Subversion
5 3 (18.75%) TeamCity
5 3 (18.75%) Vagrant
6 2 (12.50%) Bundler
6 2 (12.50%) Cucumber
6 2 (12.50%) gulp
6 2 (12.50%) Selenium
7 1 (6.25%) IntelliJ
7 1 (6.25%) Sonatype Nexus
General
1 6 (37.50%) Banking
2 5 (31.25%) Finance
3 3 (18.75%) Wholesale Banking
4 1 (6.25%) Financial Institution
4 1 (6.25%) Investment Banking
Job Titles
1 13 (81.25%) Developer
2 8 (50.00%) Java Developer
3 3 (18.75%) Full Stack Developer
3 3 (18.75%) Hadoop Developer
3 3 (18.75%) Java Hadoop Developer
4 2 (12.50%) Big Data Developer
4 2 (12.50%) Lead Developer
5 1 (6.25%) AWS Developer
5 1 (6.25%) Designer
5 1 (6.25%) J2EE Developer
5 1 (6.25%) Java Team Leader
5 1 (6.25%) Java/J2EE Developer
5 1 (6.25%) JavaScript Developer
5 1 (6.25%) Lead Designer
5 1 (6.25%) Lead Java Developer
5 1 (6.25%) Team Leader
5 1 (6.25%) Technical Leader
5 1 (6.25%) Technical Team Leader
Libraries, Frameworks & Software Standards
1 13 (81.25%) RESTful
1 13 (81.25%) Web Services
2 10 (62.50%) Spring
3 9 (56.25%) Hibernate
4 7 (43.75%) AngularJS
4 7 (43.75%) HTML
4 7 (43.75%) HTML5
4 7 (43.75%) JSON
4 7 (43.75%) REST
5 6 (37.50%) Spring Boot
6 5 (31.25%) Guice
6 5 (31.25%) Java EE
6 5 (31.25%) JSON Schema
6 5 (31.25%) Kafka
6 5 (31.25%) Samza
7 4 (25.00%) Servlets
7 4 (25.00%) Spring MVC
8 3 (18.75%) CSS
8 3 (18.75%) CSS3
8 3 (18.75%) XML
Miscellaneous
1 3 (18.75%) User Experience
2 1 (6.25%) DataPower
2 1 (6.25%) Greenfield Project
2 1 (6.25%) Management Information System
2 1 (6.25%) Online Banking
2 1 (6.25%) PKI
Operating Systems
1 5 (31.25%) Unix
2 1 (6.25%) Linux
2 1 (6.25%) Red Hat Enterprise Linux
2 1 (6.25%) Windows
2 1 (6.25%) Windows Server
Processes & Methodologies
1 13 (81.25%) Agile Software Development
2 9 (56.25%) BDD
2 9 (56.25%) TDD
3 8 (50.00%) Digital Transformation Programme
4 7 (43.75%) DevOps
4 7 (43.75%) Microservices
5 6 (37.50%) Performance Testing
6 5 (31.25%) Pair Programming
6 5 (31.25%) Scrum
7 4 (25.00%) Continuous Integration
7 4 (25.00%) MVC
7 4 (25.00%) Open Source
8 3 (18.75%) Analytics
8 3 (18.75%) High Availability
8 3 (18.75%) Information Architecture
8 3 (18.75%) Infrastructure Management
8 3 (18.75%) Mobile Development
8 3 (18.75%) Multithreading
9 2 (12.50%) Kanban
9 2 (12.50%) Test Automation
Programming Languages
1 16 (100.00%) Java
2 5 (31.25%) Groovy
2 5 (31.25%) JavaScript
3 4 (25.00%) Shell Script
4 3 (18.75%) C++
4 3 (18.75%) Python
5 2 (12.50%) SQL
6 1 (6.25%) Perl
Qualifications
1 1 (6.25%) CFA
System Software
1 8 (50.00%) Docker
Systems Management
1 4 (25.00%) Ansible
2 2 (12.50%) Puppet
Vendors
1 4 (25.00%) IBM
2 3 (18.75%) Oracle
3 1 (6.25%) Citrix
3 1 (6.25%) F5
3 1 (6.25%) Microsoft
3 1 (6.25%) MuleSoft
3 1 (6.25%) Red Hat