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 19 December 2014 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
19 Dec 2014
Same period 2013 Same period 2012
CentOS Linux
Rank 294 477 454
Rank change year-on-year
+183 -23
Contract jobs citing CentOS 357 105 103
As % of all contract IT jobs located in the UK 0.65% 0.20% 0.21%
As % of the Operating Systems category 2.81% 0.89% 0.94%
Number of daily rates quoted 264 80 58
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 £250 £300 £221
10% offered a daily rate of more than £525 £461 £440
UK excluding London average daily rate £375 £388 £341
% change year-on-year
-3.22% +13.55%
Number of hourly rates quoted 0 5 3
Average hourly rate - £32.50 £32.50
UK excluding London average hourly rate - £32.50 £32.50

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
12684 11754 10984
As % of all contract IT jobs located in the UK 22.99% 22.78% 22.13%
Number of daily rates quoted 7516 6547 5795
Average daily rate £363 £350 £350
Average daily rate % change year-on-year
+3.57% -
90% offered a daily rate of more than £170 £155 £175
10% offered a daily rate of more than £525 £513 £533
UK excluding London average daily rate £338 £310 £325
% change year-on-year
+8.87% -4.61%
Number of hourly rates quoted 1066 1061 1137
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 £33.50 £34.00 £37.50
UK excluding London average hourly rate £15.85 £15.00 £17.00
% change year-on-year
+5.66% -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 19 December 2014.

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 19 December 2014. 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 +166 349 £425 +6.25% 87
London +111 168 £450 +12.50% 27
South West +38 63 £400 +45.45% 14
Bristol - 50 £425 - 1
South East +15 49 £420 +12.00% 25
City of London +5 23 £425 +1.49% 6
Yorkshire +11 22 £250 -47.08% 5
Leeds +14 21 £250 -47.08% 2
West Yorkshire +9 21 £250 -47.08% 2
Hampshire -3 21 £435 +8.75% 9
East of England -5 19 £190 -52.50% 5
North West -1 16 £400 -5.88% 9
Cheshire +21 15 £400 - 1
Surrey +7 13 £450 +16.12% 3
Cambridgeshire -3 9 £170 -49.62% 3
North East - 9 £300 -
Guildford - 8 £450 -
Cambridge - 7 £170 - 3
Southampton +1 6 £430 +20.27% 1
Oxfordshire - 6 £275 - 3
Essex - 4 £313 -
Devon - 4 £245 - 1
Newcastle upon Tyne - 4 £300 -
Tyne and Wear - 4 £300 -
Berkshire +2 3 £418 +19.28% 6
Hertfordshire -1 3 £375 -6.25%
Buckinghamshire -11 3 £423 +14.96% 4
Milton Keynes -11 3 £423 +26.11%
Oxford - 3 £275 - 3
Gloucestershire - 3 - -

CentOS
Top 30 Related IT Skills

For the 6 months to 19 December 2014, 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.

1 549 (90.15%) Linux
2 315 (51.72%) Puppet
3 299 (49.10%) Red Hat
4 276 (45.32%) DevOps
5 247 (40.56%) Apache
6 243 (39.90%) Agile Software Development
7 236 (38.75%) Continuous Integration
8 211 (34.65%) PHP
9 209 (34.32%) Jenkins
10 206 (33.83%) Red Hat Enterprise Linux
11 205 (33.66%) MySQL
12 192 (31.53%) Git (software)
13 188 (30.87%) Ubuntu
13 188 (30.87%) Opscode Chef
14 183 (30.05%) Python
15 182 (29.89%) Ruby
16 179 (29.39%) Bash Shell
17 176 (28.90%) Java
18 165 (27.09%) VMware
19 128 (21.02%) Perl
20 123 (20.20%) Configuration Management
21 122 (20.03%) Windows
22 120 (19.70%) Amazon AWS
23 117 (19.21%) Nagios
24 113 (18.56%) JavaScript
25 109 (17.90%) Maven
26 108 (17.73%) Open Source
26 108 (17.73%) Web Services
27 107 (17.57%) Security Cleared
28 100 (16.42%) LAMP

CentOS
Top Related IT Skills by Category

For the 6 months to 19 December 2014, 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
1 247 (40.56%) Apache
2 62 (10.18%) Tomcat
3 52 (8.54%) nginx
4 49 (8.05%) OpenStack
5 31 (5.09%) Elasticsearch
6 29 (4.76%) JBoss
7 21 (3.45%) Node.js
8 14 (2.30%) IIS
9 12 (1.97%) MS Exchange
9 12 (1.97%) WebSphere
10 11 (1.81%) Cloud Foundry
10 11 (1.81%) Confluence
11 8 (1.31%) Exchange Server 2010
12 7 (1.15%) MediaWiki
12 7 (1.15%) Moodle
13 6 (0.99%) Drupal
14 4 (0.66%) SharePoint
14 4 (0.66%) WordPress
14 4 (0.66%) Lync
14 4 (0.66%) Apache ServiceMix
Applications
1 26 (4.27%) MS Excel
2 6 (0.99%) MS Office
Business Applications
1 7 (1.15%) SAP Oil and Gas
2 3 (0.49%) Magento
2 3 (0.49%) ResourceLink
3 2 (0.33%) Agresso
4 1 (0.16%) Oracle BPM
Cloud Services
1 120 (19.70%) Amazon AWS
2 61 (10.02%) Amazon EC2
2 61 (10.02%) Amazon S3
3 49 (8.05%) PaaS
4 26 (4.27%) Amazon ELB
5 19 (3.12%) SaaS
6 18 (2.96%) Route 53
7 11 (1.81%) Heroku
7 11 (1.81%) Engine Yard
8 6 (0.99%) Google Apps
8 6 (0.99%) IaaS
9 5 (0.82%) Cloud Computing
10 4 (0.66%) GitHub
11 3 (0.49%) Amazon SQS
11 3 (0.49%) Google Cloud Platform
12 2 (0.33%) Office 365
13 1 (0.16%) Joyent
13 1 (0.16%) Microsoft Azure
Communications & Networking
1 87 (14.29%) Firewall
2 52 (8.54%) DNS
3 40 (6.57%) TCP/IP
4 34 (5.58%) LDAP
5 32 (5.25%) WAN
5 32 (5.25%) Internet
6 31 (5.09%) LAN
7 30 (4.93%) VPN
8 27 (4.43%) VLAN
9 26 (4.27%) SAN
10 25 (4.11%) SSL
11 21 (3.45%) Network Security
12 16 (2.63%) DHCP
13 15 (2.46%) HTTP
14 13 (2.13%) iSCSI
15 10 (1.64%) VoIP
16 9 (1.48%) Fibre Channel
16 9 (1.48%) Cisco ASA
16 9 (1.48%) Wireshark
16 9 (1.48%) BGP
Database & Business Intelligence
1 205 (33.66%) MySQL
2 88 (14.45%) MongoDB
3 75 (12.32%) NoSQL
4 70 (11.49%) PostgreSQL
5 54 (8.87%) Apache Cassandra
6 32 (5.25%) SQL Server
6 32 (5.25%) Relational Database
7 30 (4.93%) Hadoop
8 26 (4.27%) Big Data
9 22 (3.61%) CouchDB
10 20 (3.28%) Redis
10 20 (3.28%) Riak
11 19 (3.12%) RDBMS
12 15 (2.46%) SQL Server 2012
13 13 (2.13%) MariaDB
14 10 (1.64%) Amazon RDS
15 9 (1.48%) Oracle Database
15 9 (1.48%) SQL Server 2008
16 7 (1.15%) SQL Server Analysis Services
16 7 (1.15%) SQL Server Reporting Services
Development Applications
1 209 (34.32%) Jenkins
2 192 (31.53%) Git (software)
3 109 (17.90%) Maven
4 72 (11.82%) PHPUnit
5 53 (8.70%) Subversion
6 52 (8.54%) Hudson
7 16 (2.63%) JIRA
8 14 (2.30%) RSpec
9 13 (2.13%) Cucumber
10 11 (1.81%) Selenium
10 11 (1.81%) JUnit
11 10 (1.64%) Atlassian Bamboo
11 10 (1.64%) Artifactory
12 9 (1.48%) JMeter
13 6 (0.99%) Mercurial
14 5 (0.82%) Gradle
14 5 (0.82%) Grunt
14 5 (0.82%) Behat
14 5 (0.82%) Gerrit
15 4 (0.66%) QUnit
General
1 59 (9.69%) Finance
2 14 (2.30%) Games
3 9 (1.48%) Marketing
4 8 (1.31%) Electronics
4 8 (1.31%) Manufacturing
5 7 (1.15%) Telecoms
6 6 (0.99%) Publishing
6 6 (0.99%) Retail
7 3 (0.49%) Banking
7 3 (0.49%) Legal
8 1 (0.16%) Billing
8 1 (0.16%) French Language
8 1 (0.16%) German Language
Job Titles
1 162 (26.60%) DevOps Engineer
2 119 (19.54%) Developer
3 72 (11.82%) Administrator
4 63 (10.34%) Linux DevOps Engineer
5 62 (10.18%) PHP Developer
6 57 (9.36%) Senior DevOps Engineer
7 53 (8.70%) Linux Administrator
8 50 (8.21%) Systems Administrator
9 34 (5.58%) Linux Engineer
10 33 (5.42%) Linux Systems Administrator
11 32 (5.25%) Architect
11 32 (5.25%) PHP Zend Developer
12 26 (4.27%) Analyst
13 25 (4.11%) Software Engineer
14 23 (3.78%) Senior Developer
15 22 (3.61%) Support Analyst
16 19 (3.12%) Systems Engineer
17 18 (2.96%) DevOps Architect
18 17 (2.79%) Support Engineer
18 17 (2.79%) 2nd Line Support
Libraries, Frameworks & Software Standards
1 108 (17.73%) Web Services
2 100 (16.42%) LAMP
3 91 (14.94%) HTML
3 91 (14.94%) jQuery
4 81 (13.30%) HTML5
5 67 (11.00%) Zend Framework
6 65 (10.67%) Doctrine
7 34 (5.58%) MCollective
8 32 (5.25%) CSS
9 19 (3.12%) REST
9 19 (3.12%) JSON
10 18 (2.96%) RESTful
11 16 (2.63%) XML
12 14 (2.30%) Spring
13 13 (2.13%) Hibernate
14 12 (1.97%) JPA
15 10 (1.64%) SOAP
16 9 (1.48%) AngularJS
16 9 (1.48%) ActiveMQ
16 9 (1.48%) J2EE
Miscellaneous
1 108 (17.73%) Open Source
2 42 (6.90%) Clustering
3 29 (4.76%) Computer Science
4 21 (3.45%) Replication
5 12 (1.97%) Device Driver
5 12 (1.97%) PKI
5 12 (1.97%) Analytical Skills
6 10 (1.64%) Online Games
7 9 (1.48%) Wiki
8 8 (1.31%) NHS
9 7 (1.15%) Data Structures
9 7 (1.15%) DTV
10 4 (0.66%) Smartcard
10 4 (0.66%) W3C
10 4 (0.66%) VLE
10 4 (0.66%) Algorithms
10 4 (0.66%) User Experience
11 3 (0.49%) Mobile App
11 3 (0.49%) Enterprise Software
11 3 (0.49%) Digital Media
Operating Systems
1 549 (90.15%) Linux
2 206 (33.83%) Red Hat Enterprise Linux
3 188 (30.87%) Ubuntu
4 122 (20.03%) Windows
5 80 (13.14%) UNIX
6 59 (9.69%) Debian
7 39 (6.40%) Windows Server 2003
8 37 (6.08%) Windows Server 2008
9 22 (3.61%) Windows Server 2012
10 13 (2.13%) Fedora
10 13 (2.13%) Solaris
11 11 (1.81%) Windows XP
12 10 (1.64%) VMS
13 9 (1.48%) Mac OS X
14 6 (0.99%) SUSE
14 6 (0.99%) Windows 7
15 5 (0.82%) SUSE Linux Enterprise Server
15 5 (0.82%) AIX
16 4 (0.66%) Oracle Linux
17 3 (0.49%) Windows 8
Processes & Methodologies
1 276 (45.32%) DevOps
2 243 (39.90%) Agile Software Development
3 236 (38.75%) Continuous Integration
4 123 (20.20%) Configuration Management
5 95 (15.60%) Scrum
6 73 (11.99%) Load Balancing
7 65 (10.67%) Automated Testing
8 57 (9.36%) Software Engineering
9 53 (8.70%) Build Automation
10 46 (7.55%) Kanban
11 45 (7.39%) Mentoring
12 41 (6.73%) ITIL
13 38 (6.24%) Refactoring
14 37 (6.08%) Workflow
15 33 (5.42%) Service Delivery
16 28 (4.60%) Service Management
17 26 (4.27%) TDD
18 24 (3.94%) Change Management
19 21 (3.45%) OO
19 21 (3.45%) Capacity Planning
Programming Languages
1 211 (34.65%) PHP
2 183 (30.05%) Python
3 182 (29.89%) Ruby
4 179 (29.39%) Bash Shell
5 176 (28.90%) Java
6 128 (21.02%) Perl
7 113 (18.56%) JavaScript
8 68 (11.17%) SQL
9 39 (6.40%) Shell Script
10 13 (2.13%) Korn
11 12 (1.97%) PowerShell
12 10 (1.64%) Scala
13 8 (1.31%) C++
14 7 (1.15%) PHP5
15 6 (0.99%) C
16 4 (0.66%) C#
16 4 (0.66%) Groovy
17 3 (0.49%) Golang
17 3 (0.49%) T-SQL
18 2 (0.33%) PL/SQL
Qualifications
1 107 (17.57%) Security Cleared
2 78 (12.81%) SC Cleared
3 29 (4.76%) Cisco Certification
4 28 (4.60%) CCNA
5 16 (2.63%) Degree
6 11 (1.81%) DV Cleared
7 6 (0.99%) RHCE
7 6 (0.99%) RHCT
7 6 (0.99%) RHCSA
8 5 (0.82%) BC Cleared
9 3 (0.49%) CTC Cleared
9 3 (0.49%) Microsoft Certification
9 3 (0.49%) MCSE
9 3 (0.49%) PhD
10 2 (0.33%) LPIC
11 1 (0.16%) MCITP
11 1 (0.16%) Linux+ Certification
11 1 (0.16%) CCNP
Quality Assurance & Compliance
1 44 (7.22%) QA
2 14 (2.30%) SLA
3 8 (1.31%) PCI DSS
4 4 (0.66%) Sarbanes-Oxley
4 4 (0.66%) HIPAA
5 1 (0.16%) ISO/IEC 27001
System Software
1 82 (13.46%) VMware Infrastructure
2 47 (7.72%) vCloud
3 35 (5.75%) XenServer
4 24 (3.94%) Samba
4 24 (3.94%) Active Directory
5 22 (3.61%) Hyper-V
6 17 (2.79%) NFS
7 14 (2.30%) vSphere
7 14 (2.30%) Xen
8 13 (2.13%) Varnish
9 11 (1.81%) Postfix
10 9 (1.48%) XenApp
10 9 (1.48%) VMware ESX
11 8 (1.31%) Firmware
11 8 (1.31%) XenDesktop
11 8 (1.31%) VMware ESXi
12 7 (1.15%) Docker
13 5 (0.82%) Sendmail
14 4 (0.66%) Squid
14 4 (0.66%) VMware Server
Systems Management
1 315 (51.72%) Puppet
2 188 (30.87%) Opscode Chef
3 117 (19.21%) Nagios
4 70 (11.49%) ZABBIX
5 56 (9.20%) Ansible
6 51 (8.37%) Salt
7 47 (7.72%) Vagrant
8 43 (7.06%) Cacti
9 27 (4.43%) Cobbler
10 26 (4.27%) Graphite
11 23 (3.78%) Zenoss
11 23 (3.78%) Kibana
12 19 (3.12%) Red Hat Spacewalk
12 19 (3.12%) Graylog2
13 17 (2.79%) yum
14 15 (2.46%) FortiGate
15 11 (1.81%) SELinux
15 11 (1.81%) logstash
16 9 (1.48%) collectd
17 8 (1.31%) HAProxy
Vendors
1 299 (49.10%) Red Hat
2 165 (27.09%) VMware
3 70 (11.49%) Zend
4 58 (9.52%) Splunk
5 48 (7.88%) Microsoft
6 42 (6.90%) Oracle
7 37 (6.08%) Cisco
8 36 (5.91%) Citrix
9 27 (4.43%) Rackspace
10 24 (3.94%) Perforce
11 22 (3.61%) Percona
12 18 (2.96%) EMC
13 15 (2.46%) RightScale
14 12 (1.97%) Google
15 10 (1.64%) IBM
15 10 (1.64%) Juniper
16 9 (1.48%) NetApp
16 9 (1.48%) HP
16 9 (1.48%) SAP
17 7 (1.15%) New Relic
Greater Manchester
Opus Recruitment Solutions Ltd
Rate: Market Rate
Posted: 2 days ago
London
Spargonet Consulting Plc
Rate: £400 - £450 per day
Posted: 3 days ago
Cambridge, Cambridgeshire
Cooper Lomaz Recruitment Ltd
Rate: Negotiable
Posted: 4 days ago
London
Vertical IT
Rate: MARKET RATE + COMPETITIVE
Posted: 4 days ago
Staines, Middlesex
Quadratek People Limited
Rate: From £430 to £500 per day EXcellent salary + variable + excellent bene
Posted: 5 days ago
East Anglia
HP
Posted: 23 days ago