The table below looks at the statistics for CentOS skills in IT contracts advertised for the City of London region. Included is a guide to the average contractor rates offered in IT contracts that have cited CentOS over the 3 months to 3 July 2015 with a comparison to the same period in the previous 2 years.

Note that daily contractor rates and hourly contractor rates are treated separately. When calculating average contractor rates, daily rates are not derived from quoted hourly rates or vice versa.

Location
3 months to
3 Jul 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 187 181 204
Rank change year-on-year
-6 +23
Contract jobs citing CentOS 14 13 11
As % of all contract IT jobs located in the City of London 0.24% 0.23% 0.16%
As % of the Operating Systems category 1.18% 1.02% 0.80%
Number of daily rates quoted 13 13 8
Average daily rate
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£425 £450 £350
Average daily rate % change year-on-year
-5.55% +28.57%
90% offered a daily rate of more than £363 £309 £234
10% offered a daily rate of more than £550 £558 £413
UK excluding London average daily rate £375 £350 £350
% change year-on-year
+7.14% -
Number of hourly rates quoted 0 0 1
Average hourly rate - - £54.00
UK excluding London average hourly rate - £16.75 £33.00
% change year-on-year
- -49.24%
CentOS
London

The following table is for comparison with the above and provides statistics for the entire Operating Systems category in contract jobs advertised in the City of London region.

Operating Systems Category
City of London
Contract IT job ads with a match in the
Operating Systems category
1191 1269 1382
As % of all contract IT jobs located in the City of London 20.41% 22.05% 19.92%
Number of daily rates quoted 925 928 948
Average daily rate £425 £397 £400
Average daily rate % change year-on-year
+6.98% -0.68%
90% offered a daily rate of more than £225 £175 £220
10% offered a daily rate of more than £576 £550 £550
UK excluding London average daily rate £350 £310 £325
% change year-on-year
+12.90% -4.61%
Number of hourly rates quoted 52 54 79
Average hourly rate £20.00 £18.70 £20.00
Average hourly rate % change year-on-year
+6.95% -6.50%
90% offered a hourly rate of more than £11.60 £13.40 £11.50
10% offered a hourly rate of more than £35.80 £27.50 £135.00
UK excluding London average hourly rate £16.20 £15.00 £16.00
% change year-on-year
+8.00% -6.25%

CentOS
Jobs Demand Trend in the City of London

This chart provides a 3-month moving total of IT contractor jobs citing CentOS across the City of London region as a proportion of the total demand within the Operating Systems category.

CentOS Jobs Demand Trend in the City of London

CentOS
Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in IT contract jobs citing CentOS across the City of London region.

CentOS Daily Rate Trend in the City of London

CentOS
Daily Rate Histogram in the City of London

This chart provides a histogram of daily rates quoted in contract IT jobs citing CentOS across the City of London region over the 3 months to 3 July 2015.

CentOS Daily Rate Histogram in the City of London

CentOS
Hourly Rate Trend in the City of London

This chart provides the 3-month moving average for hourly rates quoted in IT contractor jobs citing CentOS across the City of London region.

CentOS Hourly Rate Trend in the City of London

CentOS
Top 30 Related IT Skills in the City of London

For the 6 months to 3 July 2015, IT contractor jobs across the City of London region citing CentOS 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 contract IT job ads sampled that cited CentOS.

1 19 (90.48%) Linux
2 16 (76.19%) Puppet
3 12 (57.14%) Bash Shell
4 10 (47.62%) Python
4 10 (47.62%) Red Hat
4 10 (47.62%) VMware
4 10 (47.62%) DevOps
5 9 (42.86%) Jenkins
5 9 (42.86%) Amazon AWS
5 9 (42.86%) Red Hat Enterprise Linux
6 8 (38.10%) Ubuntu
6 8 (38.10%) Configuration Management
7 7 (33.33%) Firewall
7 7 (33.33%) Perl
7 7 (33.33%) MySQL
7 7 (33.33%) Windows
8 6 (28.57%) Ruby
8 6 (28.57%) ZABBIX
8 6 (28.57%) Docker
9 5 (23.81%) Ansible
9 5 (23.81%) Opscode Chef
9 5 (23.81%) NoSQL
9 5 (23.81%) Git (software)
9 5 (23.81%) IIS
9 5 (23.81%) Apache
9 5 (23.81%) Tomcat
10 4 (19.05%) Web Services
10 4 (19.05%) PHP
10 4 (19.05%) SAN
10 4 (19.05%) Active Directory

CentOS
Top Related IT Skills in the City of London by Category

For the 6 months to 3 July 2015, IT contractor jobs across the City of London region citing CentOS also mentioned the following IT skills grouped by category. The figures indicate the number of jobs and their proportion against the total number of contract IT job ads sampled that cited CentOS. Up to 20 skills are shown per category.

Application Platforms
1 5 (23.81%) Apache
1 5 (23.81%) Tomcat
1 5 (23.81%) IIS
2 3 (14.29%) JBoss
2 3 (14.29%) OpenStack
2 3 (14.29%) nginx
3 2 (9.52%) Mule ESB
4 1 (4.76%) Elasticsearch
4 1 (4.76%) Apache Solr
4 1 (4.76%) Moodle
4 1 (4.76%) Node.js
4 1 (4.76%) CMS
4 1 (4.76%) Drupal
Applications
1 1 (4.76%) Photoshop
Cloud Services
1 9 (42.86%) Amazon AWS
2 2 (9.52%) Amazon EC2
2 2 (9.52%) Google Cloud Platform
3 1 (4.76%) Amazon S3
3 1 (4.76%) SaaS
3 1 (4.76%) PaaS
3 1 (4.76%) Rackspace Cloud
3 1 (4.76%) Route 53
3 1 (4.76%) GitHub
3 1 (4.76%) IaaS
3 1 (4.76%) Amazon ELB
Communications & Networking
1 7 (33.33%) Firewall
2 4 (19.05%) SAN
2 4 (19.05%) NAS
3 3 (14.29%) iSCSI
3 3 (14.29%) LDAP
3 3 (14.29%) LAN
4 2 (9.52%) DHCP
4 2 (9.52%) VPN
4 2 (9.52%) DNS
4 2 (9.52%) Reverse Proxy
4 2 (9.52%) PCoIP
5 1 (4.76%) SSL
Database & Business Intelligence
1 7 (33.33%) MySQL
2 5 (23.81%) NoSQL
3 4 (19.05%) MongoDB
4 3 (14.29%) Redis
4 3 (14.29%) SQL Server
4 3 (14.29%) PostgreSQL
5 2 (9.52%) Apache Cassandra
6 1 (4.76%) SQL Server Reporting Services
6 1 (4.76%) SQL Server Integration Services
6 1 (4.76%) SQL Server 2012
6 1 (4.76%) DataStax
Development Applications
1 9 (42.86%) Jenkins
2 5 (23.81%) Git (software)
3 2 (9.52%) Mercurial
3 2 (9.52%) Subversion
3 2 (9.52%) Maven
3 2 (9.52%) Gerrit
3 2 (9.52%) Artifactory
3 2 (9.52%) SonarQube
4 1 (4.76%) Grunt
4 1 (4.76%) Ant
4 1 (4.76%) Gradle
4 1 (4.76%) Atlassian Bamboo
4 1 (4.76%) Hudson
Job Titles
1 6 (28.57%) DevOps Engineer
2 4 (19.05%) Linux DevOps Engineer
2 4 (19.05%) Analyst
3 3 (14.29%) Systems Administrator
3 3 (14.29%) Support Analyst
3 3 (14.29%) Applications Support
3 3 (14.29%) Administrator
3 3 (14.29%) Applications Support Analyst
4 2 (9.52%) UNIX Systems Administrator
4 2 (9.52%) UNIX Administrator
4 2 (9.52%) Linux Engineer
4 2 (9.52%) Developer
5 1 (4.76%) Architect
5 1 (4.76%) Infrastructure Engineer
5 1 (4.76%) Infrastructure Analyst
5 1 (4.76%) 2nd Line Support
5 1 (4.76%) 2nd Line Support Analyst
5 1 (4.76%) Applications Engineer
5 1 (4.76%) Moodle Developer
5 1 (4.76%) PHP Developer
Libraries, Frameworks & Software Standards
1 4 (19.05%) Web Services
2 2 (9.52%) LAMP
2 2 (9.52%) HTML5
2 2 (9.52%) RabbitMQ
2 2 (9.52%) HTML
2 2 (9.52%) J2EE
2 2 (9.52%) CSS
2 2 (9.52%) MCollective
3 1 (4.76%) React
3 1 (4.76%) REST
3 1 (4.76%) WebSockets
3 1 (4.76%) Backbone.js
3 1 (4.76%) Sass
3 1 (4.76%) LESS
3 1 (4.76%) Underscore.js
3 1 (4.76%) AngularJS
3 1 (4.76%) Twitter Bootstrap
3 1 (4.76%) ActiveMQ
3 1 (4.76%) Spring
3 1 (4.76%) Ajax
Miscellaneous
1 3 (14.29%) Management Information System
2 2 (9.52%) Freedom of Information
2 2 (9.52%) Freedom of Information Act
2 2 (9.52%) Fat Client
2 2 (9.52%) Digital Media
2 2 (9.52%) Enterprise Software
2 2 (9.52%) Analytical Skills
2 2 (9.52%) Client/Server
2 2 (9.52%) Thin Client
2 2 (9.52%) Data Centre
3 1 (4.76%) W3C
3 1 (4.76%) Public Cloud
3 1 (4.76%) Video on Demand
3 1 (4.76%) Enterprise Storage
3 1 (4.76%) Streaming Video
3 1 (4.76%) Clustering
3 1 (4.76%) E-Learning
Operating Systems
1 19 (90.48%) Linux
2 9 (42.86%) Red Hat Enterprise Linux
3 8 (38.10%) Ubuntu
4 7 (33.33%) Windows
5 4 (19.05%) Windows Server 2012
6 3 (14.29%) Windows 7
6 3 (14.29%) Windows 8
6 3 (14.29%) UNIX
7 2 (9.52%) Solaris
7 2 (9.52%) Windows Server 2008
7 2 (9.52%) SUSE
8 1 (4.76%) AIX
8 1 (4.76%) HPUX
Processes & Methodologies
1 10 (47.62%) DevOps
2 8 (38.10%) Configuration Management
3 4 (19.05%) Problem Management
3 4 (19.05%) Continuous Integration
3 4 (19.05%) Root Cause Analysis
3 4 (19.05%) Capacity Management
4 3 (14.29%) Service Delivery
4 3 (14.29%) Agile Software Development
5 2 (9.52%) Risk Management
5 2 (9.52%) Change Management
5 2 (9.52%) Project Management
5 2 (9.52%) Data Protection
5 2 (9.52%) OWASP
5 2 (9.52%) Open Source
5 2 (9.52%) Web Development
6 1 (4.76%) OO
6 1 (4.76%) Performance Testing
6 1 (4.76%) Performance Improvement
6 1 (4.76%) Service Management
6 1 (4.76%) Disaster Recovery
Programming Languages
1 12 (57.14%) Bash Shell
2 10 (47.62%) Python
3 7 (33.33%) Perl
4 6 (28.57%) Ruby
5 4 (19.05%) PHP
6 3 (14.29%) SQL
7 2 (9.52%) JavaScript
8 1 (4.76%) Java
8 1 (4.76%) PHP5
8 1 (4.76%) Groovy
Qualifications
1 3 (14.29%) Security Cleared
2 2 (9.52%) MCSE
2 2 (9.52%) CCNA
2 2 (9.52%) Cisco Certification
2 2 (9.52%) Microsoft Certification
2 2 (9.52%) RHCE
2 2 (9.52%) SC Cleared
3 1 (4.76%) DV Cleared
Quality Assurance & Compliance
1 1 (4.76%) SLA
1 1 (4.76%) QA
System Software
1 6 (28.57%) Docker
2 4 (19.05%) Active Directory
2 4 (19.05%) VMware Infrastructure
3 3 (14.29%) VMware ESXi
4 2 (9.52%) vCloud
4 2 (9.52%) Terminal Services
5 1 (4.76%) VMware ESX
5 1 (4.76%) Varnish
Systems Management
1 16 (76.19%) Puppet
2 6 (28.57%) ZABBIX
3 5 (23.81%) Opscode Chef
3 5 (23.81%) Ansible
4 4 (19.05%) Vagrant
5 3 (14.29%) Kibana
6 2 (9.52%) Rundeck
6 2 (9.52%) logstash
6 2 (9.52%) Salt
6 2 (9.52%) HAProxy
6 2 (9.52%) Cobbler
7 1 (4.76%) Red Hat Satellite
Vendors
1 10 (47.62%) Red Hat
1 10 (47.62%) VMware
2 3 (14.29%) Cisco
2 3 (14.29%) Microsoft
2 3 (14.29%) Dell
3 2 (9.52%) Citrix
3 2 (9.52%) Google
3 2 (9.52%) Rackspace
4 1 (4.76%) Zend
4 1 (4.76%) Akamai
4 1 (4.76%) Facebook
4 1 (4.76%) Twitter
City, London
Hays Finance Technology
Rate: £400.00 per annum
Posted: 8 hours ago
City, London
Oscar Associates (UK) Ltd
Rate: £350 - £400 per day
Posted: 16 hours ago