Period
to 23 November 2017

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 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.

Apache Log4j
England > London
6 months to
23 Nov 2017
Same period 2016 Same period 2015
Rank 625 615 619
Rank change year-on-year -10 +4 -5
Contract jobs citing Log4j 10 4 10
As % of all contract IT jobs advertised in London 0.021% 0.009% 0.021%
As % of the Development Applications category 0.10% 0.049% 0.14%
Number of daily rates quoted 6 1 0
London median daily rate £506 £525 -
Median daily rate % change year-on-year -3.57% - -
England median daily rate £506 £425 £400
% change year-on-year +19.12% +6.25% -
Number of hourly rates quoted 0 0 0
London median hourly rate - - -
England median hourly rate - - -

Log4j is in the Development Applications 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 development application skills.

All Development Application Skills
London
Contract vacancies with a requirement for development application skills 9524 8163 7202
As % of all contract IT jobs advertised in London 20.21% 18.06% 15.45%
Number of daily rates quoted 7190 5907 5295
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 £635 £613 £600
England median daily rate £457 £425 £405
% change year-on-year +7.41% +4.94% +1.25%
Number of hourly rates quoted 26 14 19
London median hourly rate £36.25 £36.25 £30.00
Median hourly rate % change year-on-year - +20.83% -33.33%
10th Percentile £21.93 £10.00 £21.06
90th Percentile £49.92 £57.05 £55.00
England median hourly rate £42.50 £41.00 £40.00
% change year-on-year +3.66% +2.50% +6.67%

Log4j
Job Vacancy Trend in London

Job postings citing Log4j as a percentage of all IT jobs advertised in London.

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 23 November 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 9 (90.00%) Linux
2 8 (80.00%) Java
2 8 (80.00%) SQL
3 7 (70.00%) MySQL
3 7 (70.00%) Web Services
3 7 (70.00%) Apache
3 7 (70.00%) Tomcat
3 7 (70.00%) Agile Software Development
3 7 (70.00%) TDD
3 7 (70.00%) Git (software)
4 5 (50.00%) JMeter
4 5 (50.00%) Windows
5 4 (40.00%) HTML
5 4 (40.00%) LDAP
5 4 (40.00%) Client/Server
5 4 (40.00%) HTTP
5 4 (40.00%) XML
5 4 (40.00%) JDBC
5 4 (40.00%) ODBC
5 4 (40.00%) Unix
5 4 (40.00%) SQL Server
5 4 (40.00%) JUnit
5 4 (40.00%) HP
5 4 (40.00%) Nagios
5 4 (40.00%) Spring
5 4 (40.00%) Ajax
5 4 (40.00%) JIRA
5 4 (40.00%) Fiddler
5 4 (40.00%) Atlassian Bamboo
5 4 (40.00%) Continuous Integration

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 7 (70.00%) Apache
1 7 (70.00%) Tomcat
2 3 (30.00%) MQSeries
Cloud Services
1 4 (40.00%) Amazon AWS
2 3 (30.00%) iPaaS
3 2 (20.00%) Amazon CloudWatch
4 1 (10.00%) BlazeMeter
Communications & Networking
1 4 (40.00%) HTTP
1 4 (40.00%) LDAP
2 3 (30.00%) Internet
Database & Business Intelligence
1 7 (70.00%) MySQL
2 4 (40.00%) Apache Cassandra
2 4 (40.00%) SQL Server
3 2 (20.00%) MongoDB
Development Applications
1 7 (70.00%) Git (software)
2 5 (50.00%) JMeter
3 4 (40.00%) Atlassian Bamboo
3 4 (40.00%) Bitbucket
3 4 (40.00%) Fiddler
3 4 (40.00%) Jenkins
3 4 (40.00%) JIRA
3 4 (40.00%) JUnit
3 4 (40.00%) YourKit
4 3 (30.00%) Eclipse
4 3 (30.00%) Gatling
4 3 (30.00%) Hudson
4 3 (30.00%) LoadRunner
4 3 (30.00%) LoadUI
4 3 (30.00%) Maven
4 3 (30.00%) Mockito
4 3 (30.00%) Subversion
4 3 (30.00%) Talend Open Studio
5 2 (20.00%) Zephyr
6 1 (10.00%) WebPagetest
General
1 2 (20.00%) Games
2 1 (10.00%) Banking
Job Titles
1 4 (40.00%) Developer
1 4 (40.00%) Java Developer
2 3 (30.00%) Performance Engineer
3 1 (10.00%) AWS Infrastructure Lead
3 1 (10.00%) DevOps Engineer
3 1 (10.00%) Infrastructure Tester
3 1 (10.00%) Java Engineer
3 1 (10.00%) Performance Test Engineer
3 1 (10.00%) QA Engineer
3 1 (10.00%) Test Engineer
3 1 (10.00%) Test Leader
3 1 (10.00%) Tester
Libraries, Frameworks & Software Standards
1 7 (70.00%) Web Services
2 4 (40.00%) Ajax
2 4 (40.00%) HTML
2 4 (40.00%) JDBC
2 4 (40.00%) ODBC
2 4 (40.00%) Spring
2 4 (40.00%) XML
3 3 (30.00%) ActiveMQ
3 3 (30.00%) Apache Camel
3 3 (30.00%) EJB
3 3 (30.00%) J2EE
3 3 (30.00%) JMS
3 3 (30.00%) JSON
3 3 (30.00%) JSP
3 3 (30.00%) REST
3 3 (30.00%) SOAP
3 3 (30.00%) Spring Boot
3 3 (30.00%) Spring Security
3 3 (30.00%) XSD
3 3 (30.00%) XSLT
Miscellaneous
1 4 (40.00%) Client/Server
Operating Systems
1 9 (90.00%) Linux
2 5 (50.00%) Windows
3 4 (40.00%) Unix
4 3 (30.00%) HPUX
4 3 (30.00%) Solaris
Processes & Methodologies
1 7 (70.00%) Agile Software Development
1 7 (70.00%) TDD
2 4 (40.00%) ATDD
2 4 (40.00%) BDD
2 4 (40.00%) Continuous Delivery
2 4 (40.00%) Continuous Integration
2 4 (40.00%) Defect Management
2 4 (40.00%) Feature Driven Development
2 4 (40.00%) Performance Monitoring
2 4 (40.00%) Performance Tuning
3 3 (30.00%) Dependency Management
3 3 (30.00%) E-Commerce
3 3 (30.00%) ETL
3 3 (30.00%) Performance Testing
3 3 (30.00%) RAD
4 2 (20.00%) DNA
4 2 (20.00%) Performance Engineering
4 2 (20.00%) Test Management
5 1 (10.00%) Test Strategy
5 1 (10.00%) User Acceptance Testing
Programming Languages
1 8 (80.00%) Java
1 8 (80.00%) SQL
2 4 (40.00%) Bash Shell
3 1 (10.00%) Groovy
3 1 (10.00%) JavaScript
3 1 (10.00%) Scala
Quality Assurance & Compliance
1 3 (30.00%) QA
2 1 (10.00%) Sarbanes-Oxley
Systems Management
1 4 (40.00%) Grafana
1 4 (40.00%) Graphite
1 4 (40.00%) HP SiteScope
1 4 (40.00%) Nagios
1 4 (40.00%) ZABBIX
2 2 (20.00%) Ansible
2 2 (20.00%) Opscode Chef
2 2 (20.00%) Puppet
Vendors
1 4 (40.00%) Dynatrace
1 4 (40.00%) HP
2 3 (30.00%) IBM
2 3 (30.00%) Talend
3 1 (10.00%) Neustar
3 1 (10.00%) SOASTA, Inc