The first table below looks at the demand for Log4j skills in IT jobs advertised for the London region. Included is a guide to the average salaries offered in IT jobs that have cited Log4j over the 3 months to 21 May 2013 with a comparison to the same period in the previous 2 years. The second table is for comparison and provides aggregates for all of the Development Applications category for the London region.

Location
3 months to
21 May 2013
Same period 2012 Same period 2011
Apache Log4j
Rank 602 618 606
Rank change year-on-year
+16 -12
Permanent jobs citing Log4j 5 20 18
As % of all permanent IT jobs located in London 0.011% 0.037% 0.032%
As % of the Development Applications category 0.073% 0.273% 0.265%
Number of salaries quoted 5 20 15
Average salary £52,500 £42,500 £70,000
Average salary % change year-on-year
+23.52% -39.28%
UK excluding London average salary £35,000 £45,000 £46,250
% change year-on-year
-22.22% -2.70%
All Development Applications
London
Permanent IT job ads with a match in the
Development Applications category
6812 7314 6780
As % of all permanent IT jobs located in London 15.49% 13.58% 11.92%
Number of salaries quoted 5842 6459 5894
Average salary £50,000 £47,500 £50,000
Average salary % change year-on-year
+5.26% -5.00%
90% offered a salary of more than £35,000 £35,000 £35,000
10% offered a salary of more than £67,500 £72,500 £67,500
UK excluding London average salary £38,500 £38,000 £37,000
% change year-on-year
+1.31% +2.70%
Log4j
England

Log4j
Jobs Demand Trend

This chart provides a 3-month moving total of permanent IT jobs citing Log4j across the London region as a proportion of the total demand within the Development Applications category.

London Log4j Jobs Demand Trend

Log4j
Salary Trend

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing Log4j across the London region.

London Log4j Salary Trend

Log4j
Top 30 Related IT Skills

For the 6 months to 21 May 2013, IT jobs across the London region citing Log4j also mentioned the following IT skills in order of popularity. The figures indicate the number of jobs and their proportion against the total number of IT job ads sampled that cited Log4j.

1 11 (100.00%) Java
2 10 (90.91%) J2EE
2 10 (90.91%) JUnit
3 7 (63.64%) Apache
4 6 (54.55%) Tomcat
4 6 (54.55%) Web Services
4 6 (54.55%) Jetty
4 6 (54.55%) RDF
4 6 (54.55%) Semantic Web
4 6 (54.55%) SPARQL
4 6 (54.55%) Scala
4 6 (54.55%) Mockito
4 6 (54.55%) NoSQL
4 6 (54.55%) Big Data
4 6 (54.55%) MarkLogic
4 6 (54.55%) Linked Data
5 5 (45.45%) UNIX
6 4 (36.36%) CSS
6 4 (36.36%) JDBC
6 4 (36.36%) HTML
6 4 (36.36%) SQL
6 4 (36.36%) Degree
6 4 (36.36%) Banking
6 4 (36.36%) Investment Banking
7 3 (27.27%) SCJP
7 3 (27.27%) Sun Certification
7 3 (27.27%) Sun
7 3 (27.27%) JMX
7 3 (27.27%) Scrum
7 3 (27.27%) Swing

Log4j
Top Related IT Skills by Category

For the 6 months to 21 May 2013, IT jobs across the London region citing Log4j also mentioned the following IT skills grouped by category. The figures indicate the number of jobs and their proportion against the total number of IT job ads sampled that cited Log4j. Up to 20 skills are shown per category.

Application Development
1 10 (90.91%) J2EE
2 6 (54.55%) Web Services
3 4 (36.36%) CSS
3 4 (36.36%) JDBC
3 4 (36.36%) HTML
4 3 (27.27%) JMX
4 3 (27.27%) Swing
4 3 (27.27%) AWT
4 3 (27.27%) Regular Expression
5 2 (18.18%) XML
5 2 (18.18%) WebSphere
6 1 (9.091%) XMLBeans
6 1 (9.091%) Ajax
6 1 (9.091%) Middleware
6 1 (9.091%) XSD
6 1 (9.091%) XSLT
6 1 (9.091%) JSP
6 1 (9.091%) Servlets
6 1 (9.091%) Struts
6 1 (9.091%) EJB
Application Platforms
1 7 (63.64%) Apache
2 6 (54.55%) Tomcat
2 6 (54.55%) Jetty
3 1 (9.091%) TIBCO EMS
3 1 (9.091%) WebSphere MQ
3 1 (9.091%) WebSphere Application Server
3 1 (9.091%) MQSeries
Business Applications
1 1 (9.091%) Tridion
1 1 (9.091%) BusinessWorks
Communications & Networking
1 1 (9.091%) Internet
Database & Business Intelligence
1 6 (54.55%) NoSQL
1 6 (54.55%) Big Data
1 6 (54.55%) MarkLogic
2 1 (9.091%) DB2
2 1 (9.091%) RDBMS
Development Applications
1 10 (90.91%) JUnit
2 6 (54.55%) Mockito
3 1 (9.091%) WebSphere Studio Application Developer
3 1 (9.091%) Eclipse
General
1 4 (36.36%) Banking
1 4 (36.36%) Investment Banking
2 1 (9.091%) Finance
Job Titles
1 10 (90.91%) Developer
2 9 (81.82%) Java Developer
3 3 (27.27%) Senior Java Developer
3 3 (27.27%) Senior Developer
3 3 (27.27%) ScrumMaster
4 1 (9.091%) Head of Operations
Miscellaneous
1 6 (54.55%) Semantic Web
1 6 (54.55%) Linked Data
2 1 (9.091%) Web 2.0
Operating Systems
1 5 (45.45%) UNIX
2 2 (18.18%) Solaris
2 2 (18.18%) Linux
3 1 (9.091%) HPUX
Processes & Methodologies
1 6 (54.55%) RDF
2 3 (27.27%) Scrum
3 1 (9.091%) Time Management
3 1 (9.091%) Problem Management
3 1 (9.091%) Release Management
3 1 (9.091%) Content Management
3 1 (9.091%) Incident Management
3 1 (9.091%) Disaster Recovery
3 1 (9.091%) MVC
3 1 (9.091%) ITIL
3 1 (9.091%) UML
3 1 (9.091%) OO
3 1 (9.091%) RAD
3 1 (9.091%) E-Commerce
3 1 (9.091%) Root Cause Analysis
Programming Languages
1 11 (100.00%) Java
2 6 (54.55%) SPARQL
2 6 (54.55%) Scala
3 4 (36.36%) SQL
4 1 (9.091%) XPath
4 1 (9.091%) JavaScript
4 1 (9.091%) Perl
4 1 (9.091%) Bash shell
Qualifications
1 4 (36.36%) Degree
2 3 (27.27%) SCJP
2 3 (27.27%) Sun Certification
3 1 (9.091%) ITIL Certification
Vendors
1 3 (27.27%) Sun
2 2 (18.18%) IBM
3 1 (9.091%) Blue Martini
3 1 (9.091%) Interwoven
3 1 (9.091%) TIBCO
3 1 (9.091%) Elastic Path