The table below looks at the statistics for CentOS skills in IT contracts advertised across the UK. Included is a guide to the average contractor rates offered in IT contracts that have cited CentOS over the 3 months to 27 April 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
27 Apr 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 356 448 450
Rank change year-on-year
+92 +2
Contract jobs citing CentOS 258 151 92
As % of all contract IT jobs located in the UK 0.46% 0.28% 0.19%
As % of the Operating Systems category 2.10% 1.26% 0.91%
Number of daily rates quoted 182 86 65
Average daily rate
Keep up to 90%
of your Daily Rate
Get a Free Illustration
£395 £396 £325
Average daily rate % change year-on-year
-0.31% +21.92%
90% offered a daily rate of more than £225 £298 £152
10% offered a daily rate of more than £500 £525 £428
UK excluding London average daily rate £350 £375 £300
% change year-on-year
-6.66% +25.00%
Number of hourly rates quoted 0 2 4
Average hourly rate - £35.00 £34.50
Average hourly rate % change year-on-year
- +1.44%
UK excluding London average hourly rate - £35.00 £34.00
% change year-on-year
- +2.94%

The following table is for comparison with the above and provides statistics for the entire Operating Systems category in contract jobs advertised across the UK.

Operating Systems Category
UK
Contract IT job ads with a match in the
Operating Systems category
12272 12027 10115
As % of all contract IT jobs located in the UK 22.05% 22.08% 21.20%
Number of daily rates quoted 6955 6714 5422
Average daily rate £363 £350 £350
Average daily rate % change year-on-year
+3.57% -
90% offered a daily rate of more than £170 £160 £180
10% offered a daily rate of more than £525 £504 £500
UK excluding London average daily rate £340 £320 £325
% change year-on-year
+6.25% -1.53%
Number of hourly rates quoted 1004 1034 993
Average hourly rate £16.00 £16.25 £17.00
Average hourly rate % change year-on-year
-1.53% -4.41%
90% offered a hourly rate of more than £11.00 £11.00 £11.00
10% offered a hourly rate of more than £37.50 £36.70 £37.50
UK excluding London average hourly rate £15.38 £16.00 £16.00
% change year-on-year
-3.90% -

CentOS
Jobs Demand Trend

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

CentOS Jobs Demand Trend in the UK

CentOS
Daily Rate Trend

This chart provides the 3-month moving average for daily rates quoted in IT contract jobs citing CentOS within the UK.

CentOS Daily Rate Trend in the UK

CentOS
Daily Rate Histogram

This chart provides a histogram of daily rates quoted in contract IT jobs citing CentOS within the UK over the 3 months to 27 April 2015.

CentOS Daily Rate Histogram in the UK

CentOS
Hourly Rate Trend

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

CentOS Hourly Rate Trend in the UK

CentOS
Top 30 Contract Locations

The table below looks at the demand and provides a guide to the average contractor rates quoted in IT jobs citing CentOS within the UK over the 3 months to 27 April 2015. 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
(Use links below to see detailed
statistics and historical trends)
Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Average
Daily Rate
Last 3 Months
Average Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +94 251 £391 -1.26% 99
London +21 97 £450 +3.15% 48
Yorkshire +7 44 £225 -35.71% 6
South East 0 39 £375 -3.22% 16
South West +19 33 £375 +7.14% 13
Bristol +22 31 £375 +7.14% 6
Leeds +15 29 £225 -35.71% 2
West Yorkshire +10 29 £225 -35.71% 2
North West -22 23 £400 +3.22% 7
Hampshire +4 17 £325 -10.34% 4
South Yorkshire +3 14 £400 - 2
Manchester - 12 £220 - 6
Sheffield +3 11 £400 - 2
East Midlands +3 11 £450 +16.12% 3
Oxfordshire - 10 £425 - 4
City of London +5 9 £381 +24.59% 14
Northamptonshire -4 9 £450 +16.12%
Cheshire -24 9 £425 +9.67%
Northampton - 9 £450 -
Chester -9 8 £425 +13.33%
Berkshire +10 6 £350 -17.64% 6
Buckinghamshire -8 5 £403 +15.00%
Farnborough - 5 £238 - 1
Oxford - 4 - -
Portsmouth -4 3 £290 -31.76%
Milton Keynes -5 3 £443 +26.42%
East of England +10 2 - - 4
Reading +7 2 £310 -27.05% 6
Cambridge +2 2 - - 2
Cambridgeshire 0 2 - - 2

CentOS
Top 30 Related IT Skills

For the 6 months to 27 April 2015, IT contractor jobs within the UK 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.

1 485 (88.34%) Linux
2 266 (48.45%) Red Hat
2 266 (48.45%) Puppet
3 228 (41.53%) DevOps
4 203 (36.98%) Jenkins
5 196 (35.70%) Ubuntu
6 192 (34.97%) Continuous Integration
7 190 (34.61%) Python
8 186 (33.88%) MySQL
9 184 (33.52%) Git (software)
10 183 (33.33%) Bash Shell
11 174 (31.69%) Apache
12 173 (31.51%) VMware
13 172 (31.33%) Agile Software Development
14 170 (30.97%) Red Hat Enterprise Linux
15 156 (28.42%) Java
16 150 (27.32%) Windows
16 150 (27.32%) Ruby
17 144 (26.23%) Opscode Chef
18 142 (25.87%) PHP
19 118 (21.49%) Amazon AWS
20 115 (20.95%) Perl
21 107 (19.49%) Firewall
22 102 (18.58%) Configuration Management
23 97 (17.67%) MongoDB
24 86 (15.66%) Maven
25 83 (15.12%) Security Cleared
25 83 (15.12%) Web Services
26 82 (14.94%) Nagios
26 82 (14.94%) NoSQL

CentOS
Top Related IT Skills by Category

For the 6 months to 27 April 2015, IT contractor jobs within the UK 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
1 174 (31.69%) Apache
2 61 (11.11%) Tomcat
3 57 (10.38%) nginx
4 45 (8.20%) OpenStack
5 36 (6.56%) IIS
6 33 (6.01%) JBoss
7 30 (5.46%) Confluence
8 27 (4.92%) Node.js
9 19 (3.46%) MediaWiki
10 16 (2.91%) Elasticsearch
10 16 (2.91%) Cloud Foundry
11 11 (2.00%) Mule ESB
12 9 (1.64%) SharePoint
12 9 (1.64%) WebSphere
13 6 (1.09%) Apache ServiceMix
13 6 (1.09%) Moodle
14 5 (0.91%) Lync
14 5 (0.91%) WildFly
14 5 (0.91%) Drupal
14 5 (0.91%) Alfresco
Applications
1 27 (4.92%) MS Excel
2 7 (1.28%) MS Office
3 1 (0.18%) Photoshop
3 1 (0.18%) MS Visio
Business Applications
1 7 (1.28%) SAP Oil and Gas
2 4 (0.73%) ResourceLink
3 2 (0.36%) Agresso
4 1 (0.18%) AWD
Cloud Services
1 118 (21.49%) Amazon AWS
2 49 (8.93%) PaaS
3 43 (7.83%) Amazon S3
4 42 (7.65%) Amazon EC2
5 17 (3.10%) Amazon ELB
6 16 (2.91%) Heroku
6 16 (2.91%) Engine Yard
7 14 (2.55%) Route 53
8 10 (1.82%) Google Cloud Platform
9 8 (1.46%) SaaS
10 7 (1.28%) GitHub
10 7 (1.28%) IaaS
10 7 (1.28%) Microsoft Azure
11 5 (0.91%) Virtual Private Cloud
12 4 (0.73%) AWS CloudFormation
12 4 (0.73%) Cloud Computing
13 3 (0.55%) Amazon CloudWatch
14 2 (0.36%) Amazon SQS
14 2 (0.36%) Rackspace Cloud
Communications & Networking
1 107 (19.49%) Firewall
2 53 (9.65%) DNS
3 52 (9.47%) VPN
4 44 (8.01%) TCP/IP
4 44 (8.01%) LDAP
5 41 (7.47%) VLAN
6 40 (7.29%) LAN
7 36 (6.56%) SAN
8 34 (6.19%) WAN
9 32 (5.83%) SSL
10 25 (4.55%) Network Security
11 21 (3.83%) HTTP
12 19 (3.46%) iSCSI
13 17 (3.10%) IPv6
13 17 (3.10%) Internet
14 16 (2.91%) IPsec
15 15 (2.73%) EIGRP
15 15 (2.73%) OSPF
15 15 (2.73%) BGP
16 12 (2.19%) IP Telephony
Database & Business Intelligence
1 186 (33.88%) MySQL
2 97 (17.67%) MongoDB
3 82 (14.94%) NoSQL
4 65 (11.84%) PostgreSQL
5 46 (8.38%) Apache Cassandra
6 35 (6.38%) Relational Database
7 32 (5.83%) SQL Server
8 28 (5.10%) Hadoop
9 27 (4.92%) Redis
10 23 (4.19%) CouchDB
11 21 (3.83%) RDBMS
12 17 (3.10%) MariaDB
13 14 (2.55%) Big Data
14 13 (2.37%) SQL Server 2012
15 10 (1.82%) Riak
16 7 (1.28%) Amazon RDS
17 6 (1.09%) Pentaho
18 5 (0.91%) SQL Server 2008
19 3 (0.55%) SQL Server Integration Services
19 3 (0.55%) SQL Server Reporting Services
Development Applications
1 203 (36.98%) Jenkins
2 184 (33.52%) Git (software)
3 86 (15.66%) Maven
4 81 (14.75%) Subversion
5 48 (8.74%) Hudson
6 35 (6.38%) JIRA
6 35 (6.38%) PHPUnit
7 27 (4.92%) Artifactory
8 24 (4.37%) SonarQube
9 15 (2.73%) JMeter
10 14 (2.55%) Selenium
11 13 (2.37%) Gerrit
11 13 (2.37%) Gradle
12 10 (1.82%) Mercurial
13 7 (1.28%) JUnit
14 6 (1.09%) Atlassian Bamboo
14 6 (1.09%) QUnit
15 5 (0.91%) Grunt
16 4 (0.73%) webpack
16 4 (0.73%) Ant
General
1 42 (7.65%) Finance
2 13 (2.37%) Games
2 13 (2.37%) Telecoms
3 10 (1.82%) Marketing
4 8 (1.46%) Manufacturing
4 8 (1.46%) Electronics
5 3 (0.55%) Advertising
6 2 (0.36%) Military
6 2 (0.36%) Banking
6 2 (0.36%) Retail
7 1 (0.18%) Back Office
Job Titles
1 142 (25.87%) DevOps Engineer
2 83 (15.12%) Administrator
3 68 (12.39%) Developer
4 67 (12.20%) Linux Administrator
5 63 (11.48%) Systems Administrator
6 57 (10.38%) Senior DevOps Engineer
7 48 (8.74%) Linux Engineer
8 46 (8.38%) Linux Systems Administrator
9 45 (8.20%) Linux DevOps Engineer
10 30 (5.46%) PHP Developer
11 22 (4.01%) Support Engineer
12 21 (3.83%) Analyst
12 21 (3.83%) Architect
13 20 (3.64%) Software Engineer
13 20 (3.64%) Infrastructure Engineer
14 18 (3.28%) Systems Engineer
14 18 (3.28%) 2nd Line Support
15 17 (3.10%) Linux Support
16 13 (2.37%) Support Analyst
17 12 (2.19%) Technical Support
Libraries, Frameworks & Software Standards
1 83 (15.12%) Web Services
2 63 (11.48%) jQuery
3 62 (11.29%) LAMP
4 60 (10.93%) HTML
5 51 (9.29%) HTML5
6 35 (6.38%) Doctrine
7 34 (6.19%) Zend Framework
8 32 (5.83%) RabbitMQ
9 31 (5.65%) MCollective
10 29 (5.28%) CSS
11 22 (4.01%) XML
11 22 (4.01%) JSON
12 20 (3.64%) REST
13 19 (3.46%) J2EE
14 16 (2.91%) Spring
15 14 (2.55%) Hibernate
16 13 (2.37%) Kafka
17 12 (2.19%) JPA
18 11 (2.00%) ActiveMQ
19 10 (1.82%) Ajax
Miscellaneous
1 59 (10.75%) Clustering
2 58 (10.56%) Open Source
3 21 (3.83%) Device Driver
4 19 (3.46%) Wiki
5 16 (2.91%) Hybrid Cloud
6 15 (2.73%) Computer Science
6 15 (2.73%) Analytical Skills
6 15 (2.73%) NHS
6 15 (2.73%) Smartcard
7 12 (2.19%) PKI
7 12 (2.19%) Private Cloud
8 9 (1.64%) Online Games
8 9 (1.64%) Management Information System
9 7 (1.28%) DTV
9 7 (1.28%) User Experience
10 5 (0.91%) W3C
10 5 (0.91%) Digital Media
11 4 (0.73%) Data Structures
11 4 (0.73%) Fat Client
11 4 (0.73%) Thin Client
Operating Systems
1 485 (88.34%) Linux
2 196 (35.70%) Ubuntu
3 170 (30.97%) Red Hat Enterprise Linux
4 150 (27.32%) Windows
5 70 (12.75%) UNIX
6 51 (9.29%) Debian
7 47 (8.56%) Windows Server 2003
8 44 (8.01%) Windows Server 2008
9 31 (5.65%) Fedora
10 29 (5.28%) Windows Server 2012
11 16 (2.91%) Windows 7
12 12 (2.19%) Solaris
13 11 (2.00%) VMS
14 10 (1.82%) Windows XP
15 9 (1.64%) Mac OS X
16 8 (1.46%) SUSE
16 8 (1.46%) Oracle Linux
17 7 (1.28%) HPUX
18 6 (1.09%) Windows 8
19 3 (0.55%) Amazon Linux
Processes & Methodologies
1 228 (41.53%) DevOps
2 192 (34.97%) Continuous Integration
3 172 (31.33%) Agile Software Development
4 102 (18.58%) Configuration Management
5 74 (13.48%) Scrum
6 65 (11.84%) Load Balancing
7 56 (10.20%) ITIL
8 52 (9.47%) Automated Testing
9 48 (8.74%) Build Automation
10 46 (8.38%) Workflow
11 38 (6.92%) Software Engineering
12 35 (6.38%) Service Management
13 32 (5.83%) Change Management
14 31 (5.65%) Capacity Planning
14 31 (5.65%) Mentoring
15 27 (4.92%) Refactoring
16 25 (4.55%) Kanban
17 24 (4.37%) Service Delivery
18 23 (4.19%) TDD
18 23 (4.19%) Release Management
Programming Languages
1 190 (34.61%) Python
2 183 (33.33%) Bash Shell
3 156 (28.42%) Java
4 150 (27.32%) Ruby
5 142 (25.87%) PHP
6 115 (20.95%) Perl
7 76 (13.84%) SQL
8 74 (13.48%) JavaScript
9 53 (9.65%) Shell Script
10 19 (3.46%) Korn
11 11 (2.00%) Scala
12 9 (1.64%) C++
13 8 (1.46%) C#
14 7 (1.28%) Go
15 6 (1.09%) C
16 5 (0.91%) PHP5
16 5 (0.91%) Groovy
17 4 (0.73%) PowerShell
18 2 (0.36%) sed
19 1 (0.18%) PL/SQL
Qualifications
1 83 (15.12%) Security Cleared
2 51 (9.29%) SC Cleared
3 25 (4.55%) Cisco Certification
4 24 (4.37%) CCNA
5 12 (2.19%) DV Cleared
6 11 (2.00%) RHCE
7 10 (1.82%) Degree
8 8 (1.46%) RHCT
9 4 (0.73%) CCNP
10 3 (0.55%) JNCIA
10 3 (0.55%) JNCIS
11 1 (0.18%) MCSE
11 1 (0.18%) Microsoft Certification
11 1 (0.18%) BC Cleared
Quality Assurance & Compliance
1 36 (6.56%) QA
2 7 (1.28%) SLA
3 6 (1.09%) PCI DSS
4 3 (0.55%) WAI
5 2 (0.36%) Sarbanes-Oxley
5 2 (0.36%) ISO/IEC 27001
5 2 (0.36%) HIPAA
6 1 (0.18%) ISO 9001
System Software
1 79 (14.39%) VMware Infrastructure
2 51 (9.29%) Active Directory
3 39 (7.10%) vCloud
3 39 (7.10%) Docker
4 29 (5.28%) Postfix
5 28 (5.10%) iptables
6 24 (4.37%) Samba
7 21 (3.83%) Hyper-V
8 20 (3.64%) vSphere
9 18 (3.28%) NFS
10 16 (2.91%) XenServer
11 14 (2.55%) Firmware
12 10 (1.82%) Xen
12 10 (1.82%) VMware Server
12 10 (1.82%) XenDesktop
12 10 (1.82%) XenApp
13 9 (1.64%) VMware ESXi
14 7 (1.28%) Terminal Services
15 5 (0.91%) qmail
16 4 (0.73%) Varnish
Systems Management
1 266 (48.45%) Puppet
2 144 (26.23%) Opscode Chef
3 82 (14.94%) Nagios
4 77 (14.03%) ZABBIX
4 77 (14.03%) Ansible
5 57 (10.38%) Salt
6 33 (6.01%) Cobbler
7 27 (4.92%) Cacti
8 26 (4.74%) Vagrant
9 25 (4.55%) Graphite
10 21 (3.83%) Kibana
11 20 (3.64%) HAProxy
12 17 (3.10%) logstash
13 15 (2.73%) SELinux
14 13 (2.37%) collectd
15 12 (2.19%) FortiGate
15 12 (2.19%) yum
16 9 (1.64%) Zenoss
16 9 (1.64%) Graylog
16 9 (1.64%) Red Hat Spacewalk
Vendors
1 266 (48.45%) Red Hat
2 173 (31.51%) VMware
3 65 (11.84%) Splunk
4 63 (11.48%) Microsoft
5 57 (10.38%) Cisco
6 44 (8.01%) Oracle
7 37 (6.74%) Zend
8 31 (5.65%) Citrix
9 22 (4.01%) HP
10 18 (3.28%) Rackspace
11 17 (3.10%) NetApp
12 14 (2.55%) Perforce
12 14 (2.55%) Google
12 14 (2.55%) Percona
13 10 (1.82%) Brocade
14 8 (1.46%) F5
14 8 (1.46%) Dell
14 8 (1.46%) SAP
15 6 (1.09%) EMC
15 6 (1.09%) New Relic
Central London / West End
Digitech Resourcing Ltd
Rate: Up to £450 per day then £70,000
Posted: 10 hours ago
City of London
Talent Analytix
Posted: 14 hours ago
Bicester, Oxfordshire
TEKsystems
Rate: £350 - £400 per day
Posted: 15 hours ago
City, London
Oliver Bernard
Rate: From £400 to £450 per day
Posted: 18 hours ago
Didcot, Oxfordshire
Connectus
Rate: £530 per day
Posted: 3 days ago
Didcot, Oxfordshire
Interaction Recruitment PLC
Rate: £400 - 450 per day + .
Posted: 3 days ago
Oxfordshire
Claremont Consulting Limited
Rate: £450 - £535 per day
Posted: 3 days ago
London
Computer Futures
Rate: competitive
Posted: 17 days ago
Croydon, Surrey
Solid Consulting Limited
Rate: From £375 to £450 per day
Posted: 24 days ago
City of London
Real Staffing
Rate: £375 - £376 per day + DOE
Posted: 26 days ago
Sheffield
Claremont Consulting Limited
Rate: £400 per annum
Posted: 27 days ago