Period
to 21 November 2017

The following table provides summary statistics for contract job vacancies 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 21 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
UK
6 months to
21 Nov 2017
Same period 2016 Same period 2015
Rank 857 832 868
Rank change year-on-year -25 +36 +3
Contract jobs citing Log4j 20 49 20
As % of all contract IT jobs advertised in the UK 0.019% 0.047% 0.018%
As % of the Development Applications category 0.10% 0.28% 0.12%
Number of daily rates quoted 11 34 4
UK median daily rate £513 £425 £228
Median daily rate % change year-on-year +20.59% +86.81% -43.13%
10th Percentile £425 £293 £218
90th Percentile £575 £475 £367
UK excluding London median daily rate £550 £425 £228
% change year-on-year +29.41% +86.81% -43.13%
Number of hourly rates quoted 0 0 0
UK median hourly rate - - -
UK excluding London 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 with a requirement for development application skills.

All Development Application Skills
UK
Contract vacancies with a requirement for development application skills 19267 17294 16223
As % of all contract IT jobs advertised in the UK 18.68% 16.51% 14.28%
Number of daily rates quoted 13417 11639 10802
UK median daily rate £450 £425 £400
Median daily rate % change year-on-year +5.88% +6.25% -
10th Percentile £313 £300 £275
90th Percentile £600 £575 £563
UK excluding London median daily rate £413 £400 £375
% change year-on-year +3.13% +6.67% +7.14%
Number of hourly rates quoted 289 251 338
UK median hourly rate £42.50 £41.00 £40.00
Median hourly rate % change year-on-year +3.66% +2.50% +6.67%
10th Percentile £29.00 £24.00 £24.23
90th Percentile £60.20 £53.75 £50.00
UK excluding London median hourly rate £42.50 £41.00 £40.00
% change year-on-year +3.66% +2.50% +6.67%

Log4j
Job Vacancy Trend

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

Job vacancy trend for Log4j in the UK

Log4j
Contractor Daily Rate Trend

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

Contractor daily rate trend for Log4j in the UK

Log4j
Contractor Daily Rate Histogram

The daily rate distribution of IT jobs citing Log4j over the 6 months to 21 November 2017.

Contractor daily rate histogram for Log4j in the UK

Log4j
Contractor Hourly Rate Trend

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing Log4j.

Contractor hourly rate trend for Log4j in the UK

Log4j
Top 5 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Log4j within the UK over the 6 months to 21 November 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
England -15 16 £500 +17.65%
London -10 11 £500 -4.76%
UK excluding London -19 9 £550 +29.41% 1
East of England -3 5 - -
Scotland -4 4 £550 - 1

For the 6 months to 21 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 with a requirement for Log4j.

1 18 (90.00%) Java
2 17 (85.00%) Web Services
2 17 (85.00%) Git (software)
3 16 (80.00%) Tomcat
4 15 (75.00%) Linux
4 15 (75.00%) SQL
4 15 (75.00%) Agile Software Development
4 15 (75.00%) TDD
5 14 (70.00%) Apache
6 13 (65.00%) JUnit
6 13 (65.00%) JDBC
7 12 (60.00%) MySQL
7 12 (60.00%) XML
8 11 (55.00%) XSLT
8 11 (55.00%) J2EE
8 11 (55.00%) JSP
8 11 (55.00%) EJB
9 9 (45.00%) Unix
9 9 (45.00%) Spring
9 9 (45.00%) REST
10 8 (40.00%) Mockito
10 8 (40.00%) Continuous Integration
10 8 (40.00%) Maven
10 8 (40.00%) Subversion
10 8 (40.00%) JSON
10 8 (40.00%) XSD
10 8 (40.00%) SOAP
10 8 (40.00%) HPUX
10 8 (40.00%) Solaris
10 8 (40.00%) RAD

Log4j
Co-occurring 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 16 (80.00%) Tomcat
2 14 (70.00%) Apache
3 8 (40.00%) MQSeries
4 4 (20.00%) WebSphere
5 3 (15.00%) JBoss
6 1 (5.00%) Adobe Experience Manager
6 1 (5.00%) CMS
6 1 (5.00%) Oracle SOA Suite
6 1 (5.00%) WebSphere Application Server
Business Applications
1 1 (5.00%) Magento
Cloud Services
1 5 (25.00%) Amazon AWS
2 3 (15.00%) iPaaS
3 2 (10.00%) Amazon CloudWatch
3 2 (10.00%) BlazeMeter
4 1 (5.00%) npm
Communications & Networking
1 8 (40.00%) Internet
2 5 (25.00%) HTTP
2 5 (25.00%) LDAP
3 1 (5.00%) HTTPS
3 1 (5.00%) SSL
Database & Business Intelligence
1 12 (60.00%) MySQL
2 5 (25.00%) Apache Cassandra
2 5 (25.00%) SQL Server
3 4 (20.00%) Oracle Database
3 4 (20.00%) RDBMS
3 4 (20.00%) Relational Database
4 3 (15.00%) MongoDB
4 3 (15.00%) Oracle Database 11g
5 1 (5.00%) DB2
5 1 (5.00%) Hadoop
5 1 (5.00%) Jackrabbit
Development Applications
1 17 (85.00%) Git (software)
2 13 (65.00%) JUnit
3 8 (40.00%) Eclipse
3 8 (40.00%) Jenkins
3 8 (40.00%) Maven
3 8 (40.00%) Mockito
3 8 (40.00%) Subversion
4 7 (35.00%) JMeter
4 7 (35.00%) Talend Open Studio
5 5 (25.00%) Atlassian Bamboo
5 5 (25.00%) Bitbucket
5 5 (25.00%) Fiddler
5 5 (25.00%) JIRA
5 5 (25.00%) YourKit
6 4 (20.00%) Gatling
6 4 (20.00%) Hudson
6 4 (20.00%) LoadRunner
6 4 (20.00%) LoadUI
6 4 (20.00%) WebSphere Studio Application Developer
7 3 (15.00%) XMLSpy
General
1 6 (30.00%) Games
2 1 (5.00%) Banking
2 1 (5.00%) Finance
Job Titles
1 8 (40.00%) Developer
2 5 (25.00%) Java Developer
3 4 (20.00%) Performance Engineer
3 4 (20.00%) Technical Leader
4 3 (15.00%) Architect
5 2 (10.00%) DevOps Engineer
6 1 (5.00%) AWS Infrastructure Lead
6 1 (5.00%) Infrastructure Tester
6 1 (5.00%) Java Engineer
6 1 (5.00%) Performance Test Engineer
6 1 (5.00%) QA Engineer
6 1 (5.00%) Senior DevOps
6 1 (5.00%) Senior DevOps Engineer
6 1 (5.00%) Senior Performance Engineer
6 1 (5.00%) Test Engineer
6 1 (5.00%) Test Leader
6 1 (5.00%) Tester
Libraries, Frameworks & Software Standards
1 17 (85.00%) Web Services
2 13 (65.00%) JDBC
3 12 (60.00%) XML
4 11 (55.00%) EJB
4 11 (55.00%) J2EE
4 11 (55.00%) JSP
4 11 (55.00%) XSLT
5 9 (45.00%) REST
5 9 (45.00%) Spring
6 8 (40.00%) JMS
6 8 (40.00%) JSON
6 8 (40.00%) SOAP
6 8 (40.00%) XSD
7 7 (35.00%) ActiveMQ
7 7 (35.00%) Apache Camel
7 7 (35.00%) HTML
7 7 (35.00%) Spring Boot
7 7 (35.00%) Spring Security
8 6 (30.00%) Ajax
9 5 (25.00%) ODBC
Miscellaneous
1 5 (25.00%) Client/Server
2 2 (10.00%) Computer Science
Operating Systems
1 15 (75.00%) Linux
2 9 (45.00%) Unix
3 8 (40.00%) HPUX
3 8 (40.00%) Solaris
4 6 (30.00%) Windows
Processes & Methodologies
1 15 (75.00%) Agile Software Development
1 15 (75.00%) TDD
2 8 (40.00%) Continuous Integration
2 8 (40.00%) E-Commerce
2 8 (40.00%) RAD
3 7 (35.00%) Dependency Management
3 7 (35.00%) ETL
4 5 (25.00%) ATDD
4 5 (25.00%) BDD
4 5 (25.00%) Continuous Delivery
4 5 (25.00%) Defect Management
4 5 (25.00%) Feature Driven Development
4 5 (25.00%) Performance Monitoring
4 5 (25.00%) Performance Tuning
4 5 (25.00%) UML
5 4 (20.00%) Performance Testing
6 3 (15.00%) DNA
6 3 (15.00%) OOA/OOD
6 3 (15.00%) Performance Engineering
6 3 (15.00%) Scrum
Programming Languages
1 18 (90.00%) Java
2 15 (75.00%) SQL
3 7 (35.00%) Bash Shell
4 6 (30.00%) JavaScript
5 2 (10.00%) Groovy
5 2 (10.00%) Scala
6 1 (5.00%) Perl
6 1 (5.00%) PL/SQL
Qualifications
1 2 (10.00%) Degree
2 1 (5.00%) Computer Science Degree
Quality Assurance & Compliance
1 4 (20.00%) QA
2 1 (5.00%) Sarbanes-Oxley
Systems Management
1 5 (25.00%) Grafana
1 5 (25.00%) Graphite
1 5 (25.00%) HP SiteScope
1 5 (25.00%) Nagios
1 5 (25.00%) ZABBIX
2 2 (10.00%) Ansible
2 2 (10.00%) Opscode Chef
2 2 (10.00%) Puppet
Vendors
1 8 (40.00%) IBM
2 7 (35.00%) Talend
3 5 (25.00%) Dynatrace
3 5 (25.00%) HP
4 4 (20.00%) Oracle
5 3 (15.00%) Guidewire
6 2 (10.00%) Neustar
6 2 (10.00%) SOASTA, Inc
7 1 (5.00%) ATG
7 1 (5.00%) Blue Martini
7 1 (5.00%) Demandware
7 1 (5.00%) Elastic Path
7 1 (5.00%) hybris