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 30 January 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
30 Jan 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 334 460 419
Rank change year-on-year
+126 -41
Contract jobs citing CentOS 282 93 120
As % of all contract IT jobs located in the UK 0.55% 0.19% 0.27%
As % of the Operating Systems category 2.45% 0.86% 1.22%
Number of daily rates quoted 197 67 68
Average daily rate
Keep up to 90%
of your Daily Rate
Get a Free Illustration
£425 £400 £375
Average daily rate % change year-on-year
+6.25% +6.66%
90% offered a daily rate of more than £245 £275 £243
10% offered a daily rate of more than £530 £463 £450
UK excluding London average daily rate £350 £400 £325
% change year-on-year
-12.50% +23.07%
Number of hourly rates quoted 1 2 2
Average hourly rate £47.50 £23.75 £35.50
Average hourly rate % change year-on-year
+100.00% -33.09%
UK excluding London average hourly rate £47.50 £23.75 £32.50
% change year-on-year
+100.00% -26.92%

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
11503 10761 9850
As % of all contract IT jobs located in the UK 22.54% 22.34% 22.06%
Number of daily rates quoted 6743 5881 5185
Average daily rate £375 £350 £350
Average daily rate % change year-on-year
+7.14% -
90% offered a daily rate of more than £170 £150 £175
10% offered a daily rate of more than £525 £505 £500
UK excluding London average daily rate £338 £307 £325
% change year-on-year
+9.93% -5.53%
Number of hourly rates quoted 909 971 1091
Average hourly rate £15.85 £15.50 £17.50
Average hourly rate % change year-on-year
+2.25% -11.42%
90% offered a hourly rate of more than £11.00 £11.00 £11.00
10% offered a hourly rate of more than £37.50 £33.50 £37.65
UK excluding London average hourly rate £15.50 £15.00 £17.00
% change year-on-year
+3.33% -11.76%

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 30 January 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 30 January 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 +135 276 £425 +6.25% 110
London +80 146 £450 +9.09% 52
South West +24 42 £400 +28.00% 10
South East +24 39 £381 -4.68% 16
Bristol +25 31 £413 +17.85% 7
Yorkshire +9 19 £238 - 11
East of England +11 18 £189 -52.81% 3
West Yorkshire +9 18 £238 - 8
Leeds +3 18 £238 - 7
City of London +7 15 £475 +11.76% 14
Hampshire -13 13 £430 +7.50% 5
Cambridgeshire -3 11 £170 -58.15% 2
Cambridge +4 9 £170 -58.78% 2
Oxfordshire - 8 £275 - 1
Berkshire +6 6 £418 +33.60% 8
Surrey 0 6 - - 1
North West -14 5 £300 -29.41% 13
North East - 5 £300 -
Buckinghamshire -6 4 £424 +5.93%
Essex - 4 £313 -
Gloucestershire - 4 £450 - 1
Oxford - 4 £288 -
Guildford -2 3 - - 1
Manchester -7 3 £325 -23.52% 6
Milton Keynes - 3 £425 -
Newcastle upon Tyne - 3 £300 -
Devon - 3 £240 -
Exeter - 3 £240 -
Cheltenham - 3 - - 1
Tyne and Wear - 3 £300 -

CentOS
Top 30 Related IT Skills

For the 6 months to 30 January 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.

1 541 (89.87%) Linux
2 315 (52.33%) Puppet
3 288 (47.84%) Red Hat
4 287 (47.67%) DevOps
5 247 (41.03%) Agile Software Development
6 246 (40.86%) Continuous Integration
7 227 (37.71%) Apache
8 217 (36.05%) Jenkins
9 206 (34.22%) PHP
10 204 (33.89%) Red Hat Enterprise Linux
10 204 (33.89%) Git (software)
11 201 (33.39%) MySQL
12 192 (31.89%) Ruby
13 191 (31.73%) Bash Shell
14 189 (31.40%) Ubuntu
15 187 (31.06%) Opscode Chef
16 181 (30.07%) Python
17 171 (28.41%) Java
18 163 (27.08%) VMware
19 136 (22.59%) Configuration Management
20 123 (20.43%) Windows
21 122 (20.27%) Perl
22 119 (19.77%) Amazon AWS
23 115 (19.10%) Security Cleared
24 111 (18.44%) Maven
25 110 (18.27%) JavaScript
25 110 (18.27%) Nagios
26 104 (17.28%) Open Source
27 99 (16.45%) Firewall
28 98 (16.28%) Web Services

CentOS
Top Related IT Skills by Category

For the 6 months to 30 January 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
1 227 (37.71%) Apache
2 56 (9.30%) OpenStack
3 54 (8.97%) nginx
4 51 (8.47%) Tomcat
5 27 (4.49%) Elasticsearch
6 24 (3.99%) JBoss
7 23 (3.82%) Node.js
8 21 (3.49%) IIS
9 18 (2.99%) Confluence
10 13 (2.16%) MediaWiki
11 12 (1.99%) Cloud Foundry
12 9 (1.50%) WebSphere
13 8 (1.33%) MS Exchange
14 6 (1.00%) Moodle
15 5 (0.83%) Apache ServiceMix
15 5 (0.83%) SharePoint
15 5 (0.83%) Exchange Server 2010
16 4 (0.66%) Lync
16 4 (0.66%) Drupal
16 4 (0.66%) Exchange Server 2013
Applications
1 28 (4.65%) MS Excel
2 7 (1.16%) MS Office
Business Applications
1 10 (1.66%) SAP Oil and Gas
2 3 (0.50%) ResourceLink
3 2 (0.33%) Agresso
4 1 (0.17%) Oracle BPM
4 1 (0.17%) Magento
Cloud Services
1 119 (19.77%) Amazon AWS
2 63 (10.47%) Amazon EC2
3 62 (10.30%) Amazon S3
4 58 (9.63%) PaaS
5 26 (4.32%) Amazon ELB
6 21 (3.49%) SaaS
7 18 (2.99%) Route 53
8 12 (1.99%) Heroku
8 12 (1.99%) Engine Yard
9 7 (1.16%) IaaS
10 6 (1.00%) Cloud Computing
10 6 (1.00%) GitHub
11 4 (0.66%) Google Cloud Platform
12 2 (0.33%) Amazon SQS
12 2 (0.33%) Google Apps
13 1 (0.17%) Yammer
13 1 (0.17%) Joyent
13 1 (0.17%) Microsoft Azure
Communications & Networking
1 99 (16.45%) Firewall
2 47 (7.81%) DNS
3 46 (7.64%) TCP/IP
4 40 (6.64%) WAN
5 39 (6.48%) LAN
6 37 (6.15%) VPN
7 35 (5.81%) VLAN
8 30 (4.98%) LDAP
9 29 (4.82%) Internet
10 28 (4.65%) SSL
11 26 (4.32%) Network Security
12 24 (3.99%) SAN
13 18 (2.99%) HTTP
14 16 (2.66%) DHCP
15 14 (2.33%) IPv6
16 13 (2.16%) VoIP
16 13 (2.16%) BGP
16 13 (2.16%) IPsec
16 13 (2.16%) iSCSI
17 12 (1.99%) OSPF
Database & Business Intelligence
1 201 (33.39%) MySQL
2 92 (15.28%) MongoDB
3 79 (13.12%) PostgreSQL
4 77 (12.79%) NoSQL
5 55 (9.14%) Apache Cassandra
6 40 (6.64%) SQL Server
7 35 (5.81%) Relational Database
8 28 (4.65%) Hadoop
9 24 (3.99%) Big Data
10 23 (3.82%) RDBMS
11 20 (3.32%) Redis
11 20 (3.32%) SQL Server 2012
12 18 (2.99%) CouchDB
13 17 (2.82%) Riak
14 15 (2.49%) MariaDB
15 10 (1.66%) SQL Server 2008
15 10 (1.66%) Amazon RDS
16 8 (1.33%) Oracle Database
17 7 (1.16%) SQL Server 2005
17 7 (1.16%) SQL Server Reporting Services
Development Applications
1 217 (36.05%) Jenkins
2 204 (33.89%) Git (software)
3 111 (18.44%) Maven
4 71 (11.79%) PHPUnit
5 62 (10.30%) Subversion
6 54 (8.97%) Hudson
7 22 (3.65%) JIRA
8 15 (2.49%) Artifactory
9 12 (1.99%) Cucumber
9 12 (1.99%) Selenium
9 12 (1.99%) JMeter
9 12 (1.99%) JUnit
10 10 (1.66%) Atlassian Bamboo
10 10 (1.66%) RSpec
11 8 (1.33%) Gerrit
12 7 (1.16%) Gradle
12 7 (1.16%) Mercurial
13 5 (0.83%) QUnit
14 4 (0.66%) Grunt
14 4 (0.66%) Behat
General
1 58 (9.63%) Finance
2 12 (1.99%) Marketing
3 11 (1.83%) Telecoms
3 11 (1.83%) Manufacturing
4 10 (1.66%) Electronics
5 8 (1.33%) Games
6 6 (1.00%) Publishing
7 4 (0.66%) Banking
7 4 (0.66%) Retail
8 2 (0.33%) Legal
9 1 (0.17%) Billing
9 1 (0.17%) French Language
9 1 (0.17%) German Language
Job Titles
1 173 (28.74%) DevOps Engineer
2 117 (19.44%) Developer
3 68 (11.30%) Administrator
4 64 (10.63%) Senior DevOps Engineer
5 63 (10.47%) Linux DevOps Engineer
5 63 (10.47%) PHP Developer
6 47 (7.81%) Systems Administrator
6 47 (7.81%) Linux Administrator
7 33 (5.48%) PHP Zend Developer
8 30 (4.98%) Linux Systems Administrator
9 25 (4.15%) Architect
10 24 (3.99%) Software Engineer
11 23 (3.82%) Analyst
11 23 (3.82%) Senior Developer
11 23 (3.82%) Infrastructure Engineer
12 22 (3.65%) Linux Engineer
13 18 (2.99%) Support Analyst
13 18 (2.99%) Support Engineer
14 17 (2.82%) Java Developer
15 16 (2.66%) 2nd Line Support
Libraries, Frameworks & Software Standards
1 98 (16.28%) Web Services
2 95 (15.78%) jQuery
3 93 (15.45%) HTML
4 91 (15.12%) LAMP
5 82 (13.62%) HTML5
6 66 (10.96%) Zend Framework
7 65 (10.80%) Doctrine
8 36 (5.98%) MCollective
9 35 (5.81%) CSS
10 19 (3.16%) JSON
11 18 (2.99%) REST
12 16 (2.66%) RESTful
13 14 (2.33%) Spring
14 13 (2.16%) Hibernate
15 12 (1.99%) JPA
15 12 (1.99%) J2EE
15 12 (1.99%) XML
16 11 (1.83%) .NET
17 10 (1.66%) RabbitMQ
17 10 (1.66%) ActiveMQ
Miscellaneous
1 104 (17.28%) Open Source
2 49 (8.14%) Clustering
3 23 (3.82%) Computer Science
4 19 (3.16%) Replication
5 16 (2.66%) Device Driver
6 15 (2.49%) Wiki
7 14 (2.33%) PKI
8 13 (2.16%) Analytical Skills
9 10 (1.66%) DTV
10 8 (1.33%) NHS
11 7 (1.16%) Data Structures
12 5 (0.83%) Smartcard
12 5 (0.83%) Online Games
13 4 (0.66%) W3C
13 4 (0.66%) Algorithms
13 4 (0.66%) Enterprise Software
13 4 (0.66%) Digital Media
14 3 (0.50%) Mobile App
14 3 (0.50%) User Experience
14 3 (0.50%) Client/Server
Operating Systems
1 541 (89.87%) Linux
2 204 (33.89%) Red Hat Enterprise Linux
3 189 (31.40%) Ubuntu
4 123 (20.43%) Windows
5 68 (11.30%) UNIX
6 48 (7.97%) Debian
7 34 (5.65%) Windows Server 2008
7 34 (5.65%) Windows Server 2003
8 18 (2.99%) Fedora
8 18 (2.99%) Windows Server 2012
9 14 (2.33%) Solaris
10 10 (1.66%) VMS
10 10 (1.66%) Windows XP
11 9 (1.50%) Mac OS X
12 7 (1.16%) SUSE
13 6 (1.00%) Windows 7
14 4 (0.66%) Oracle Linux
14 4 (0.66%) SUSE Linux Enterprise Server
15 3 (0.50%) Windows 8
15 3 (0.50%) AIX
Processes & Methodologies
1 287 (47.67%) DevOps
2 247 (41.03%) Agile Software Development
3 246 (40.86%) Continuous Integration
4 136 (22.59%) Configuration Management
5 96 (15.95%) Scrum
6 82 (13.62%) Load Balancing
7 71 (11.79%) Automated Testing
8 56 (9.30%) Software Engineering
9 52 (8.64%) Build Automation
10 43 (7.14%) Mentoring
11 42 (6.98%) Kanban
12 37 (6.15%) ITIL
12 37 (6.15%) Refactoring
13 36 (5.98%) Workflow
14 34 (5.65%) Service Delivery
15 32 (5.32%) Change Management
16 28 (4.65%) Capacity Planning
16 28 (4.65%) TDD
16 28 (4.65%) Service Management
17 20 (3.32%) BDD
Programming Languages
1 206 (34.22%) PHP
2 192 (31.89%) Ruby
3 191 (31.73%) Bash Shell
4 181 (30.07%) Python
5 171 (28.41%) Java
6 122 (20.27%) Perl
7 110 (18.27%) JavaScript
8 67 (11.13%) SQL
9 41 (6.81%) Shell Script
10 17 (2.82%) Korn
11 11 (1.83%) PowerShell
12 10 (1.66%) Scala
13 9 (1.50%) PHP5
14 7 (1.16%) C++
15 6 (1.00%) Groovy
15 6 (1.00%) C
16 5 (0.83%) Golang
16 5 (0.83%) C#
17 3 (0.50%) sed
17 3 (0.50%) T-SQL
Qualifications
1 115 (19.10%) Security Cleared
2 86 (14.29%) SC Cleared
3 35 (5.81%) Cisco Certification
4 34 (5.65%) CCNA
5 12 (1.99%) DV Cleared
5 12 (1.99%) Degree
6 9 (1.50%) RHCT
7 5 (0.83%) RHCE
8 3 (0.50%) BC Cleared
8 3 (0.50%) CTC Cleared
9 2 (0.33%) PhD
10 1 (0.17%) MCSE
10 1 (0.17%) Microsoft Certification
10 1 (0.17%) CCNP
10 1 (0.17%) MCITP
10 1 (0.17%) LPIC
Quality Assurance & Compliance
1 43 (7.14%) QA
2 12 (1.99%) SLA
3 9 (1.50%) PCI DSS
4 4 (0.66%) HIPAA
4 4 (0.66%) Sarbanes-Oxley
5 1 (0.17%) ISO/IEC 27001
System Software
1 80 (13.29%) VMware Infrastructure
2 47 (7.81%) vCloud
3 29 (4.82%) XenServer
4 26 (4.32%) Samba
5 25 (4.15%) Active Directory
6 16 (2.66%) vSphere
6 16 (2.66%) Hyper-V
7 15 (2.49%) Postfix
8 13 (2.16%) NFS
9 12 (1.99%) Firmware
10 11 (1.83%) Varnish
11 10 (1.66%) XenApp
11 10 (1.66%) Docker
12 9 (1.50%) Xen
12 9 (1.50%) XenDesktop
13 8 (1.33%) VMware ESXi
14 7 (1.16%) VMware ESX
15 4 (0.66%) Terminal Services
16 3 (0.50%) KVM
16 3 (0.50%) VMware Server
Systems Management
1 315 (52.33%) Puppet
2 187 (31.06%) Opscode Chef
3 110 (18.27%) Nagios
4 76 (12.62%) ZABBIX
5 67 (11.13%) Ansible
6 46 (7.64%) Salt
7 41 (6.81%) Cacti
7 41 (6.81%) Vagrant
8 28 (4.65%) Cobbler
9 23 (3.82%) Kibana
9 23 (3.82%) Graphite
10 20 (3.32%) Zenoss
11 18 (2.99%) FortiGate
12 16 (2.66%) Graylog2
13 13 (2.16%) logstash
14 12 (1.99%) Red Hat Spacewalk
15 11 (1.83%) yum
16 10 (1.66%) collectd
17 9 (1.50%) HAProxy
18 8 (1.33%) SELinux
Vendors
1 288 (47.84%) Red Hat
2 163 (27.08%) VMware
3 70 (11.63%) Zend
4 51 (8.47%) Splunk
4 51 (8.47%) Microsoft
5 41 (6.81%) Cisco
5 41 (6.81%) Oracle
6 36 (5.98%) Citrix
7 24 (3.99%) Perforce
7 24 (3.99%) Rackspace
8 23 (3.82%) Percona
9 15 (2.49%) RightScale
10 13 (2.16%) EMC
11 11 (1.83%) SAP
11 11 (1.83%) HP
12 10 (1.66%) IBM
12 10 (1.66%) Juniper
12 10 (1.66%) New Relic
13 9 (1.50%) AppDynamics
13 9 (1.50%) Google
Bristol
Kainos
Posted: 21 hours ago
Winchester, Hampshire
Connectus
Rate: £400 - £450 per day
Posted: 22 hours ago
Portsmouth
Spectrum IT
Rate: £250 - £330 per day
Posted: Yesterday
London
Spargonet Consulting Plc
Rate: £400 - £500 per day
Posted: 2 days ago
London
Spargonet Consulting Plc
Rate: £400 - £500 per day
Posted: 2 days ago
London
TEKsystems
Rate: £450 - £525 per day
Posted: 4 days ago
London
TRG
Rate: 350-420 Per Day call for details
Posted: 6 days ago
City, London
TRG
Rate: £350 - £420 Per Day call for details
Posted: 6 days ago
Bristol, Avon
TRG
Rate: £350 - £420 Per Day call for details
Posted: 6 days ago