The following table provides summary statistics for permanent job vacancies with a requirement for Log4j skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Log4j over the 3 months to 26 March 2017 with a comparison to the same period in the previous 2 years.

3 months to
26 Mar 2017
Same period 2016 Same period 2015
Apache Log4j
UK
Rank 854 931 928
Rank change year-on-year +77 -3  
Permanent jobs citing Log4j 6 25 38
As % of all permanent IT jobs advertised in the UK 0.007% 0.024% 0.036%
As % of the Development Applications category 0.037% 0.13% 0.22%
Number of salaries quoted 4 17 30
Median salary £36,000 £62,500 £55,000
Median salary % change year-on-year -42.40% +13.63%  
UK excluding London median salary - £70,000 £55,000
% change year-on-year - +27.27%  

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

Development Application Skills
UK
Permanent job vacancies with a requirement for development application skills 16438 18672 17294
As % of all permanent IT job vacancies advertised in the UK 19.58% 18.06% 16.25%
Number of salaries quoted 13808 15954 14504
Median salary £48,875 £47,500 £45,000
Median salary % change year-on-year +2.89% +5.55%  
90% offered a salary of more than £32,500 £32,500 £32,500
10% offered a salary of more than £70,000 £65,000 £70,000
UK excluding London median salary £42,500 £42,500 £41,000
% change year-on-year - +3.65%  

Log4j
Job Vacancy Trend

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

Job vacancy trend for Log4j in the UK

Log4j
Salary Trend

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

Salary trend for Log4j in the UK

Log4j
Salary Histogram

The salary distribution of IT jobs citing Log4j over the 3 months to 26 March 2017.

Salary histogram for Log4j in the UK

Log4j
Top 4 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Log4j within the UK over the 3 months to 26 March 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +89 6 £36,000 -42.40%
London +74 4 £36,000 -10.00%
Nottinghamshire - 2 - -
East Midlands - 2 - -

Log4j
Top 30 Related IT Skills

For the 6 months to 26 March 2017, IT jobs citing Log4j also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads with a requirement for Log4j.

1 22 (100.00%) Java
2 17 (77.27%) SQL
2 17 (77.27%) Tomcat
3 16 (72.73%) Web Services
4 15 (68.18%) XML
5 14 (63.64%) J2EE
5 14 (63.64%) Oracle
6 13 (59.09%) Linux
6 13 (59.09%) JMS
7 12 (54.55%) Apache
7 12 (54.55%) JUnit
8 11 (50.00%) Hibernate
8 11 (50.00%) Maven
9 10 (45.45%) WebSphere
9 10 (45.45%) Spring
9 10 (45.45%) JDBC
9 10 (45.45%) JSP
9 10 (45.45%) SOAP
9 10 (45.45%) Relational Database
10 9 (40.91%) WebLogic
10 9 (40.91%) Eclipse
11 8 (36.36%) MVC
11 8 (36.36%) Agile Software Development
11 8 (36.36%) IBM
11 8 (36.36%) SQL Server
11 8 (36.36%) RESTful
12 7 (31.82%) JPA
12 7 (31.82%) Apache Commons
12 7 (31.82%) HTML
12 7 (31.82%) MySQL

Log4j
Top Related IT Skills 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 17 (77.27%) Tomcat
2 12 (54.55%) Apache
3 10 (45.45%) WebSphere
4 9 (40.91%) WebLogic
5 6 (27.27%) Adobe Experience Manager
5 6 (27.27%) JBoss
6 5 (22.73%) Oracle SOA Suite
7 4 (18.18%) CMS
7 4 (18.18%) MQSeries
8 1 (4.55%) Confluence
8 1 (4.55%) Mule
8 1 (4.55%) Mule ESB
8 1 (4.55%) WebLogic Portal
Applications
1 2 (9.09%) MS Excel
1 2 (9.09%) MS Office
Business Applications
1 4 (18.18%) Magento
Cloud Services
1 1 (4.55%) Amazon AWS
Communications & Networking
1 4 (18.18%) Internet
2 2 (9.09%) HTTPS
2 2 (9.09%) SMTP
3 1 (4.55%) HTTP
3 1 (4.55%) LDAP
3 1 (4.55%) TCP/IP
Database & Business Intelligence
1 10 (45.45%) Relational Database
2 8 (36.36%) SQL Server
3 7 (31.82%) MySQL
4 6 (27.27%) DB2
5 5 (22.73%) Jackrabbit
5 5 (22.73%) RDBMS
6 3 (13.64%) Data Warehouse
6 3 (13.64%) Hazelcast
6 3 (13.64%) Oracle Database
6 3 (13.64%) Oracle Database 10g
6 3 (13.64%) Oracle Database 11g
6 3 (13.64%) SSDT
7 1 (4.55%) Apache Cassandra
7 1 (4.55%) Big Data
7 1 (4.55%) MongoDB
Development Applications
1 12 (54.55%) JUnit
2 11 (50.00%) Maven
3 9 (40.91%) Eclipse
4 7 (31.82%) Subversion
5 5 (22.73%) Git (software)
6 4 (18.18%) Mockito
6 4 (18.18%) Talend Open Studio
7 3 (13.64%) Ant
7 3 (13.64%) MyEclipse
7 3 (13.64%) Selenium
7 3 (13.64%) SoapUI
8 2 (9.09%) Atlassian Bamboo
8 2 (9.09%) JIRA
8 2 (9.09%) JMeter
8 2 (9.09%) Selenium IDE
9 1 (4.55%) EasyMock
9 1 (4.55%) Fiddler
9 1 (4.55%) Gatling
9 1 (4.55%) LoadRunner
9 1 (4.55%) YourKit
General
1 4 (18.18%) Banking
1 4 (18.18%) Finance
2 3 (13.64%) Front Office
2 3 (13.64%) Investment Banking
3 1 (4.55%) Publishing
Job Titles
1 14 (63.64%) Developer
1 14 (63.64%) Java Developer
2 9 (40.91%) Senior Developer
2 9 (40.91%) Senior Java Developer
3 4 (18.18%) Agile Developer
3 4 (18.18%) Agile Java Developer
3 4 (18.18%) J2EE Developer
3 4 (18.18%) Java/J2EE Developer
3 4 (18.18%) Unix Developer
4 2 (9.09%) Development Manager
4 2 (9.09%) Java Development Manager
4 2 (9.09%) Java Programmer
4 2 (9.09%) Oracle Development Manager
4 2 (9.09%) Programmer
4 2 (9.09%) QA Engineer
4 2 (9.09%) Risk Manager
4 2 (9.09%) Test Engineer
5 1 (4.55%) QA Analyst
5 1 (4.55%) Software Team Leader
5 1 (4.55%) Technical Development Manager
Libraries, Frameworks & Software Standards
1 16 (72.73%) Web Services
2 15 (68.18%) XML
3 14 (63.64%) J2EE
4 13 (59.09%) JMS
5 11 (50.00%) Hibernate
6 10 (45.45%) JDBC
6 10 (45.45%) JSP
6 10 (45.45%) SOAP
6 10 (45.45%) Spring
7 8 (36.36%) RESTful
8 7 (31.82%) Apache Commons
8 7 (31.82%) HTML
8 7 (31.82%) JPA
8 7 (31.82%) XSLT
9 6 (27.27%) Ajax
9 6 (27.27%) CSS
9 6 (27.27%) JAX-RS
9 6 (27.27%) JAX-WS
10 5 (22.73%) Spring MVC
10 5 (22.73%) Spring Web Flow
Miscellaneous
1 3 (13.64%) Client/Server
1 3 (13.64%) Computer Science
1 3 (13.64%) Credit Risk
2 2 (9.09%) Analytical Skills
2 2 (9.09%) OTC Derivatives
3 1 (4.55%) New Media
Operating Systems
1 13 (59.09%) Linux
2 7 (31.82%) Unix
3 6 (27.27%) Windows
4 4 (18.18%) HPUX
4 4 (18.18%) Solaris
5 3 (13.64%) Red Hat Enterprise Linux
6 1 (4.55%) Android
6 1 (4.55%) Apple iOS
Processes & Methodologies
1 8 (36.36%) Agile Software Development
1 8 (36.36%) MVC
2 7 (31.82%) ETL
3 6 (27.27%) SOA
3 6 (27.27%) TDD
3 6 (27.27%) UML
4 5 (22.73%) E-Commerce
4 5 (22.73%) Mentoring
4 5 (22.73%) OO
4 5 (22.73%) OOP
5 4 (18.18%) Continuous Integration
5 4 (18.18%) Dependency Management
5 4 (18.18%) RAD
6 3 (13.64%) Automated Testing
6 3 (13.64%) Migration
6 3 (13.64%) Risk Management
6 3 (13.64%) SDLC
6 3 (13.64%) Validation
7 2 (9.09%) Software Engineering
7 2 (9.09%) Software Testing
Programming Languages
1 22 (100.00%) Java
2 17 (77.27%) SQL
3 6 (27.27%) JavaScript
4 3 (13.64%) ANSI SQL
4 3 (13.64%) Data Analysis Expressions (DAX)
4 3 (13.64%) Perl
4 3 (13.64%) PL/SQL
5 2 (9.09%) ECMAScript
5 2 (9.09%) VBA
6 1 (4.55%) Bash Shell
6 1 (4.55%) Groovy
6 1 (4.55%) Scala
Qualifications
1 5 (22.73%) Degree
Quality Assurance & Compliance
1 3 (13.64%) QA
System Software
1 1 (4.55%) Docker
Systems Management
1 3 (13.64%) Control-M
2 1 (4.55%) Grafana
2 1 (4.55%) Graphite
2 1 (4.55%) HP SiteScope
2 1 (4.55%) Nagios
2 1 (4.55%) ZABBIX
Vendors
1 14 (63.64%) Oracle
2 8 (36.36%) IBM
3 5 (22.73%) Google
4 4 (18.18%) ATG
4 4 (18.18%) Blue Martini
4 4 (18.18%) Talend
5 3 (13.64%) Informatica
5 3 (13.64%) Red Hat
5 3 (13.64%) Sybase
6 2 (9.09%) Adobe
7 1 (4.55%) Cognizant
7 1 (4.55%) Dynatrace
7 1 (4.55%) HP
7 1 (4.55%) Misys
7 1 (4.55%) SOASTA, Inc