The first table below looks at the demand 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 25 July 2014 with a comparison to the same period in the previous 2 years. The second table is for comparison and provides aggregates for all of the Operating Systems category.

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
25 Jul 2014
Same period 2013 Same period 2012
CentOS Linux
Rank 369 424 495
Rank change year-on-year
+55 +71
Contract jobs citing CentOS 239 146 89
As % of all contract IT jobs located in the UK 0.44% 0.29% 0.15%
As % of the Operating Systems category 1.94% 1.28% 0.74%
Number of daily rates quoted 174 94 56
Average daily rate
Keep up to 90%
of your Daily Rate
Get a Free Illustration
£375 £369 £325
Average daily rate % change year-on-year
+1.69% +13.46%
90% offered a daily rate of more than £181 £212 £235
10% offered a daily rate of more than £500 £450 £400
UK excluding London average daily rate £350 £363 £288
% change year-on-year
-3.44% +26.08%
Number of hourly rates quoted 4 5 1
Average hourly rate £16.75 £42.50 £42.50
Average hourly rate % change year-on-year
-60.58% -
UK excluding London average hourly rate £16.75 £36.00 £42.50
% change year-on-year
-53.47% -15.29%
Operating Systems Category
UK
Contract IT job ads with a match in the
Operating Systems category
12342 11394 12107
As % of all contract IT jobs located in the UK 22.58% 22.33% 20.93%
Number of daily rates quoted 6992 6242 5951
Average daily rate £350 £350 £350
90% offered a daily rate of more than £163 £175 £190
10% offered a daily rate of more than £500 £500 £500
UK excluding London average daily rate £313 £325 £323
% change year-on-year
-3.84% +0.77%
Number of hourly rates quoted 1044 1027 1256
Average hourly rate £15.00 £17.00 £17.87
Average hourly rate % change year-on-year
-11.76% -4.84%
90% offered a hourly rate of more than £11.00 £11.00 £11.50
10% offered a hourly rate of more than £29.75 £37.50 £40.00
UK excluding London average hourly rate £15.00 £16.20 £17.50
% change year-on-year
-7.40% -7.42%

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 25 July 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 25 July 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 +48 231 £375 +1.69% 98
London -2 88 £400 +8.10% 53
South West +28 62 £375 - 5
Bristol +21 51 £375 - 2
Yorkshire +27 35 £185 -48.07% 7
West Yorkshire +26 31 £185 -47.14% 5
Leeds +20 29 £180 -48.57% 5
South East -5 25 £365 -14.11% 19
City of London +15 14 £450 +36.36% 11
Hampshire -15 12 £350 -17.64% 8
East Midlands - 12 £200 - 2
Southampton 0 10 £358 +93.24%
Northamptonshire - 10 £200 - 1
Buckinghamshire -1 8 £400 +86.69% 1
North West +3 7 £275 - 9
Cheshire - 5 £256 - 2
Northampton - 5 £200 - 1
Gloucestershire - 4 £363 - 2
Chester - 4 £238 - 2
Gloucester - 4 £363 - 1
East of England -23 3 - - 4
Guildford +8 2 £501 -
Surrey -3 2 £501 - 4
Scotland - 2 £225 - 5
Wales - 2 £425 - 3
Cambridge - 2 - - 1
Cambridgeshire - 2 - - 1
Reading +7 1 - - 2
Hammersmith +2 1 - -
Berkshire 0 1 - - 4

CentOS
Top 30 Related IT Skills

For the 6 months to 25 July 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.

1 323 (82.19%) Linux
2 238 (60.56%) Red Hat
3 187 (47.58%) Puppet
4 175 (44.53%) Apache
5 153 (38.93%) DevOps
6 142 (36.13%) Python
7 136 (34.61%) MySQL
8 132 (33.59%) Red Hat Enterprise Linux
9 130 (33.08%) PHP
10 125 (31.81%) Ubuntu
11 118 (30.03%) Continuous Integration
12 113 (28.75%) VMware
13 106 (26.97%) Jenkins
14 97 (24.68%) Opscode Chef
14 97 (24.68%) Ruby
15 94 (23.92%) Perl
16 93 (23.66%) Java
17 91 (23.16%) Bash Shell
18 88 (22.39%) Amazon AWS
19 87 (22.14%) Windows
20 85 (21.63%) LAMP
21 84 (21.37%) Agile Software Development
22 76 (19.34%) Web Services
23 74 (18.83%) Configuration Management
23 74 (18.83%) Open Source
24 73 (18.58%) UNIX
25 71 (18.07%) Nagios
25 71 (18.07%) VMware Infrastructure
26 62 (15.78%) Amazon EC2
27 58 (14.76%) Git (software)

CentOS
Top Related IT Skills by Category

For the 6 months to 25 July 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
1 175 (44.53%) Apache
2 45 (11.45%) Tomcat
3 44 (11.20%) nginx
4 23 (5.85%) Elasticsearch
5 20 (5.09%) OpenStack
6 18 (4.58%) Node.js
7 15 (3.82%) Confluence
8 13 (3.31%) Moodle
9 11 (2.80%) WebSphere
10 9 (2.29%) MS Exchange
10 9 (2.29%) IIS
11 8 (2.04%) Jetty
12 7 (1.78%) MediaWiki
13 6 (1.53%) SharePoint 2010
13 6 (1.53%) Exchange Server 2010
13 6 (1.53%) SharePoint
14 5 (1.27%) WebLogic
14 5 (1.27%) Office Communications Server
15 3 (0.76%) Drupal
16 2 (0.51%) WordPress
Applications
1 8 (2.04%) MS Excel
Business Applications
1 5 (1.27%) Oracle EBS
1 5 (1.27%) SAP Oil and Gas
1 5 (1.27%) Magento
2 3 (0.76%) Shopify
3 2 (0.51%) SAP ERP
Cloud Services
1 88 (22.39%) Amazon AWS
2 62 (15.78%) Amazon EC2
3 56 (14.25%) Amazon S3
4 30 (7.63%) Route 53
5 29 (7.38%) Amazon ELB
6 26 (6.62%) SaaS
7 17 (4.33%) PaaS
8 12 (3.05%) Cloud Computing
9 11 (2.80%) Rackspace Cloud
10 4 (1.02%) Google Apps
10 4 (1.02%) IaaS
11 2 (0.51%) GitHub
11 2 (0.51%) Office 365
11 2 (0.51%) Joyent
12 1 (0.25%) Amazon SQS
12 1 (0.25%) Amazon EMR
Communications & Networking
1 53 (13.49%) DNS
2 51 (12.98%) Firewall
3 42 (10.69%) LDAP
4 29 (7.38%) DHCP
5 24 (6.11%) SAN
5 24 (6.11%) SSH
6 18 (4.58%) SSL
6 18 (4.58%) VPN
7 17 (4.33%) TCP/IP
7 17 (4.33%) HTTP
7 17 (4.33%) iSCSI
8 16 (4.07%) LAN
8 16 (4.07%) WAN
9 14 (3.56%) Internet
9 14 (3.56%) Network Security
10 10 (2.54%) BGP
11 9 (2.29%) OSPF
11 9 (2.29%) SMTP
11 9 (2.29%) Ethernet
12 8 (2.04%) SNMP
Database & Business Intelligence
1 136 (34.61%) MySQL
2 57 (14.50%) MongoDB
3 47 (11.96%) NoSQL
4 31 (7.89%) Apache Cassandra
5 27 (6.87%) Big Data
6 26 (6.62%) PostgreSQL
7 22 (5.60%) Hadoop
8 19 (4.83%) CouchDB
9 18 (4.58%) Riak
10 17 (4.33%) Relational Database
11 15 (3.82%) Redis
12 11 (2.80%) SQL Server
13 10 (2.54%) Oracle Database
14 8 (2.04%) Data Warehouse
15 5 (1.27%) RDBMS
15 5 (1.27%) Oracle Database 11g
16 3 (0.76%) Hazelcast
16 3 (0.76%) Oracle Database 10g
16 3 (0.76%) SQL Server Reporting Services
16 3 (0.76%) SQL Server 2005
Development Applications
1 106 (26.97%) Jenkins
2 58 (14.76%) Git (software)
3 57 (14.50%) Hudson
4 56 (14.25%) Maven
5 36 (9.16%) Subversion
6 18 (4.58%) PHPUnit
7 16 (4.07%) JIRA
8 11 (2.80%) RSpec
8 11 (2.80%) Cucumber
9 7 (1.78%) JUnit
10 6 (1.53%) FitNesse
11 4 (1.02%) Selenium
11 4 (1.02%) Mockito
12 3 (0.76%) Grunt
13 2 (0.51%) Appcelerator Titanium
13 2 (0.51%) FishEye
13 2 (0.51%) Capybara
13 2 (0.51%) Eclipse
13 2 (0.51%) Ant
14 1 (0.25%) TeamCity
General
1 27 (6.87%) Finance
2 13 (3.31%) Games
3 9 (2.29%) Pharmaceutical
4 8 (2.04%) Electronics
5 6 (1.53%) Telecoms
5 6 (1.53%) Manufacturing
5 6 (1.53%) Marketing
6 3 (0.76%) Advertising
7 2 (0.51%) Publishing
7 2 (0.51%) Banking
7 2 (0.51%) Retail
8 1 (0.25%) Legal
Job Titles
1 84 (21.37%) DevOps Engineer
2 52 (13.23%) Developer
3 49 (12.47%) Administrator
4 47 (11.96%) Linux Engineer
5 42 (10.69%) Systems Administrator
6 31 (7.89%) Linux Administrator
7 24 (6.11%) Senior DevOps Engineer
8 23 (5.85%) PHP Developer
9 22 (5.60%) Linux Systems Administrator
10 19 (4.83%) Systems Engineer
10 19 (4.83%) Support Engineer
11 18 (4.58%) 2nd Line Support
11 18 (4.58%) Architect
12 16 (4.07%) Analyst
13 15 (3.82%) Designer
14 13 (3.31%) Software Engineer
15 12 (3.05%) Consultant
16 11 (2.80%) Java Developer
17 10 (2.54%) Linux Support
17 10 (2.54%) Cloud Engineer
Libraries, Frameworks & Software Standards
1 85 (21.63%) LAMP
2 76 (19.34%) Web Services
3 43 (10.94%) jQuery
4 32 (8.14%) RESTful
5 27 (6.87%) HTML
6 25 (6.36%) XML
7 24 (6.11%) Zend Framework
7 24 (6.11%) HTML5
8 20 (5.09%) JSON
9 18 (4.58%) Spring
10 17 (4.33%) CSS
11 16 (4.07%) Ajax
12 12 (3.05%) Servlets
12 12 (3.05%) MCollective
13 11 (2.80%) Symfony
14 9 (2.29%) Regular Expression
14 9 (2.29%) CakePHP
15 8 (2.04%) Hibernate
16 7 (1.78%) CSS3
17 6 (1.53%) REST
Miscellaneous
1 74 (18.83%) Open Source
2 16 (4.07%) Clustering
3 15 (3.82%) Computer Science
4 11 (2.80%) NHS
4 11 (2.80%) Replication
5 10 (2.54%) Online Games
6 9 (2.29%) E-Learning
7 8 (2.04%) VLE
7 8 (2.04%) Management Information System
7 8 (2.04%) Wiki
8 6 (1.53%) Blackberry
9 5 (1.27%) DTV
10 4 (1.02%) Animation
10 4 (1.02%) Learning Management System
11 3 (0.76%) STB
11 3 (0.76%) PKI
11 3 (0.76%) Linked Data
12 2 (0.51%) Social Network
12 2 (0.51%) iSeries
13 1 (0.25%) Visualisation
Operating Systems
1 323 (82.19%) Linux
2 132 (33.59%) Red Hat Enterprise Linux
3 125 (31.81%) Ubuntu
4 87 (22.14%) Windows
5 73 (18.58%) UNIX
6 56 (14.25%) Debian
7 48 (12.21%) Windows Server 2003
8 43 (10.94%) Windows Server 2008
9 23 (5.85%) Windows XP
10 16 (4.07%) Fedora
11 10 (2.54%) Windows 7
12 9 (2.29%) Windows Server 2012
13 8 (2.04%) AIX
14 6 (1.53%) Solaris
14 6 (1.53%) SUSE
15 5 (1.27%) Oracle Linux
15 5 (1.27%) Scientific Linux
16 3 (0.76%) SELinux
17 1 (0.25%) Mac OS X Server
17 1 (0.25%) Android
Processes & Methodologies
1 153 (38.93%) DevOps
2 118 (30.03%) Continuous Integration
3 84 (21.37%) Agile Software Development
4 74 (18.83%) Configuration Management
5 49 (12.47%) Scrum
6 38 (9.67%) Load Balancing
7 36 (9.16%) Workflow
8 30 (7.63%) Service Management
8 30 (7.63%) ITIL
9 29 (7.38%) Build Automation
10 24 (6.11%) E-Commerce
11 21 (5.34%) Kanban
12 20 (5.09%) TDD
12 20 (5.09%) Software Engineering
13 19 (4.83%) Migration
13 19 (4.83%) Performance Testing
14 17 (4.33%) Data Modelling
15 16 (4.07%) Incident Management
16 15 (3.82%) Performance Tuning
17 13 (3.31%) Disaster Recovery
Programming Languages
1 142 (36.13%) Python
2 130 (33.08%) PHP
3 97 (24.68%) Ruby
4 94 (23.92%) Perl
5 93 (23.66%) Java
6 91 (23.16%) Bash Shell
7 48 (12.21%) JavaScript
8 35 (8.91%) SQL
9 30 (7.63%) Shell Script
10 15 (3.82%) PHP5
11 12 (3.05%) sed
12 4 (1.02%) Scala
12 4 (1.02%) XQuery
13 3 (0.76%) T-SQL
13 3 (0.76%) AWK
13 3 (0.76%) C++
13 3 (0.76%) PowerShell
14 2 (0.51%) PL/SQL
14 2 (0.51%) C
15 1 (0.25%) C#
Qualifications
1 37 (9.41%) Security Cleared
2 31 (7.89%) SC Cleared
3 16 (4.07%) Degree
4 6 (1.53%) DV Cleared
4 6 (1.53%) RHCE
5 5 (1.27%) CCNA
5 5 (1.27%) Cisco Certification
6 3 (0.76%) Microsoft Certification
6 3 (0.76%) OCP
6 3 (0.76%) Oracle Certification
6 3 (0.76%) MCSE
6 3 (0.76%) BC Cleared
7 1 (0.25%) ITIL Foundation Certificate
7 1 (0.25%) ISTQB Foundation Certification
7 1 (0.25%) ISEB
7 1 (0.25%) Linux+ Certification
7 1 (0.25%) LPIC
Quality Assurance & Compliance
1 29 (7.38%) QA
2 15 (3.82%) SLA
3 1 (0.25%) PCI DSS
System Software
1 71 (18.07%) VMware Infrastructure
2 43 (10.94%) NFS
3 41 (10.43%) Active Directory
4 27 (6.87%) XenServer
5 21 (5.34%) VMware Server
5 21 (5.34%) Samba
5 21 (5.34%) vCloud
6 20 (5.09%) Xen
7 19 (4.83%) Postfix
8 17 (4.33%) Hyper-V
9 16 (4.07%) Sendmail
10 15 (3.82%) Squid
11 14 (3.56%) Varnish
12 12 (3.05%) KVM
13 10 (2.54%) vSphere
14 9 (2.29%) VMware ESXi
15 8 (2.04%) VMware ESX
16 6 (1.53%) qmail
17 3 (0.76%) Oracle RAC
17 3 (0.76%) Oracle RMAN
Systems Management
1 187 (47.58%) Puppet
2 97 (24.68%) Opscode Chef
3 71 (18.07%) Nagios
4 45 (11.45%) Vagrant
5 42 (10.69%) ZABBIX
6 41 (10.43%) Cacti
7 40 (10.18%) Salt
8 20 (5.09%) Red Hat Spacewalk
9 15 (3.82%) Ansible
10 14 (3.56%) StatsD
11 9 (2.29%) Zenoss
12 8 (2.04%) Munin
12 8 (2.04%) Cobbler
12 8 (2.04%) Opsview
13 7 (1.78%) Kibana
13 7 (1.78%) Graylog2
13 7 (1.78%) HAProxy
13 7 (1.78%) YUM
14 6 (1.53%) SCCM
14 6 (1.53%) SCOM
Vendors
1 238 (60.56%) Red Hat
2 113 (28.75%) VMware
3 50 (12.72%) Splunk
4 42 (10.69%) Rackspace
5 29 (7.38%) Oracle
6 28 (7.12%) Microsoft
7 27 (6.87%) Zend
8 26 (6.62%) RightScale
8 26 (6.62%) Cisco
9 24 (6.11%) NetApp
10 23 (5.85%) Percona
11 21 (5.34%) Citrix
11 21 (5.34%) HP
11 21 (5.34%) EMC
12 13 (3.31%) SaltStack
13 11 (2.80%) SAP
13 11 (2.80%) JBoss
14 9 (2.29%) Perforce
15 7 (1.78%) IBM
15 7 (1.78%) Dell
Gloucester, Gloucestershire
Yoh Company
Rate: £425 - £475 per day
Posted: 23 hours ago
North West
The Bridge Ltd
Rate: £ Excellent Market Rates
Posted: Yesterday
Bristol, Avon
Gold Group
Rate: From £350 to £425 per day
Posted: 2 days ago
Gloucestershire
Venn Group - UK
Rate: 250-400 Per Day
Posted: 8 days ago
North West England
Computer Futures
Rate: competitive
Posted: 11 days ago
North West England
Computer Futures
Posted: 23 days ago
Chester
Computer Futures
Posted: 23 days ago
Chester
Computer Futures
Rate: £225 - £250 per day
Posted: 23 days ago
Reading
Computer Futures
Rate: £400 - £500 per day
Posted: 25 days ago