The following table provides summary statistics for contract job vacancies advertised in London with a requirement for Log4j skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Log4j over the 3 months to 28 March 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.

Apache Log4j
England / London
3 months to
28 Mar 2017
Same period 2016 Same period 2015
Rank 401 423 -
Rank change year-on-year +22 -  
Contract jobs citing Log4j 1 3 0
As % of all contract IT jobs advertised in London 0.005% 0.013% -
As % of the Development Applications category 0.028% 0.085% -
Number of daily rates quoted 0 1 0
Median daily rate - £625 -
UK excluding London median daily rate - £325 £275
% change year-on-year - +18.18%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

Log4j is in the development application skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for development application skills.

Contract Development Application Skills
London
Contract job vacancies with a requirement for development application skills 3566 3534 3081
As % of all contract IT job vacancies advertised in London 18.29% 15.84% 14.32%
Number of daily rates quoted 2613 2580 2182
Median daily rate £475 £475 £425
Median daily rate % change year-on-year - +11.76%  
90% offered a daily rate of more than £350 £350 £315
10% offered a daily rate of more than £600 £600 £563
UK excluding London median daily rate £400 £375 £363
% change year-on-year +6.66% +3.44%  
Number of hourly rates quoted 12 9 7
Median hourly rate £42.50 £50.00 £42.00
Median hourly rate % change year-on-year -15.00% +19.04%  
90% offered a hourly rate of more than £32.50 £39.70 £20.31
10% offered a hourly rate of more than £153.00 £50.00 £55.00
UK excluding London median hourly rate £42.50 £42.29 £37.50
% change year-on-year +0.49% +12.77%  

Log4j
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing Log4j as a proportion of all contract or permanent IT jobs with a match in the Development Applications category.

Job vacancy trend for Log4j in London

Log4j
Contractor Daily Rate Trend in London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Log4j in London.

Contractor daily rate trend for Log4j in London

For the 6 months to 28 March 2017, IT contractor jobs citing Log4j 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 Log4j.

1 5 (100.00%) HTML
1 5 (100.00%) Java
1 5 (100.00%) SQL
1 5 (100.00%) Oracle
1 5 (100.00%) Web Services
1 5 (100.00%) XML
1 5 (100.00%) CSS
1 5 (100.00%) JSP
1 5 (100.00%) Tomcat
1 5 (100.00%) WebSphere
1 5 (100.00%) TDD
2 3 (60.00%) Banking
2 3 (60.00%) WebLogic
2 3 (60.00%) Web Development
2 3 (60.00%) Java EE
2 3 (60.00%) JMS
2 3 (60.00%) IBM
2 3 (60.00%) Misys
2 3 (60.00%) WebLogic Portal
2 3 (60.00%) Back Office
2 3 (60.00%) Finance
2 3 (60.00%) JBoss
2 3 (60.00%) SQL Server
2 3 (60.00%) DB2
3 2 (40.00%) Ant
3 2 (40.00%) JUnit
3 2 (40.00%) MySQL
3 2 (40.00%) JavaScript
3 2 (40.00%) Apache
3 2 (40.00%) Servlets

Log4j
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 5 (100.00%) Tomcat
1 5 (100.00%) WebSphere
2 3 (60.00%) JBoss
2 3 (60.00%) WebLogic
2 3 (60.00%) WebLogic Portal
3 2 (40.00%) Apache
3 2 (40.00%) Jetty
Communications & Networking
1 2 (40.00%) Internet
Database & Business Intelligence
1 3 (60.00%) DB2
1 3 (60.00%) SQL Server
2 2 (40.00%) MySQL
2 2 (40.00%) Oracle Database
Development Applications
1 2 (40.00%) Ant
1 2 (40.00%) Cucumber
1 2 (40.00%) Git (software)
1 2 (40.00%) IntelliJ
1 2 (40.00%) JUnit
1 2 (40.00%) Mercurial
1 2 (40.00%) Mockito
1 2 (40.00%) Spock
General
1 3 (60.00%) Back Office
1 3 (60.00%) Banking
1 3 (60.00%) Finance
Job Titles
1 3 (60.00%) Consultant
1 3 (60.00%) Technical Consultant
2 2 (40.00%) Developer
2 2 (40.00%) Java Developer
2 2 (40.00%) SQL Developer
Libraries, Frameworks & Software Standards
1 5 (100.00%) CSS
1 5 (100.00%) HTML
1 5 (100.00%) JSP
1 5 (100.00%) Web Services
1 5 (100.00%) XML
2 3 (60.00%) Java EE
2 3 (60.00%) JMS
3 2 (40.00%) AngularJS
3 2 (40.00%) Apache Commons
3 2 (40.00%) HTML5
3 2 (40.00%) JSON
3 2 (40.00%) JSON Schema
3 2 (40.00%) JSTL
3 2 (40.00%) React
3 2 (40.00%) RESTful
3 2 (40.00%) Servlets
3 2 (40.00%) Spring
3 2 (40.00%) XSD
Operating Systems
1 2 (40.00%) Linux
Processes & Methodologies
1 5 (100.00%) TDD
2 3 (60.00%) Web Development
3 2 (40.00%) Agile Software Development
3 2 (40.00%) BDD
3 2 (40.00%) E-Commerce
3 2 (40.00%) MVC
Programming Languages
1 5 (100.00%) Java
1 5 (100.00%) SQL
2 2 (40.00%) JavaScript
Vendors
1 5 (100.00%) Oracle
2 3 (60.00%) IBM
2 3 (60.00%) Misys
3 2 (40.00%) ATG
3 2 (40.00%) Demandware
3 2 (40.00%) Elastic Path
3 2 (40.00%) hybris