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 18 April 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
18 Apr 2014
Same period 2013 Same period 2012
CentOS Linux
Rank 437 448 495
Rank change year-on-year
+11 +47
Contract jobs citing CentOS 151 96 93
As % of all contract IT jobs located in the UK 0.27% 0.20% 0.15%
As % of the Operating Systems category 1.23% 0.95% 0.77%
Number of daily rates quoted 85 68 53
Average daily rate £393 £325 £390
Average daily rate % change year-on-year
+20.76% -16.66%
90% offered a daily rate of more than £295 £161 £267
10% offered a daily rate of more than £525 £441 £450
UK excluding London average daily rate £363 £300 £450
% change year-on-year
+20.83% -33.33%
Number of hourly rates quoted 2 4 0
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% -
Operating Systems Category
UK
Contract IT job ads with a match in the
Operating Systems category
12312 10060 12139
As % of all contract IT jobs located in the UK 21.87% 21.08% 20.02%
Number of daily rates quoted 6850 5374 6201
Average daily rate £350 £350 £361
Average daily rate % change year-on-year
- -2.91%
90% offered a daily rate of more than £160 £175 £200
10% offered a daily rate of more than £500 £500 £500
UK excluding London average daily rate £320 £315 £325
% change year-on-year
+1.58% -3.07%
Number of hourly rates quoted 1083 989 1179
Average hourly rate £16.08 £17.00 £17.50
Average hourly rate % change year-on-year
-5.41% -2.85%
90% offered a hourly rate of more than £11.00 £11.00 £11.50
10% offered a hourly rate of more than £35.00 £37.50 £38.50
UK excluding London average hourly rate £16.00 £16.00 £17.00
% change year-on-year
- -5.88%

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 18 April 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 18 April 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
(Click each for more statistics)
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
Find
Job
Vacancies
England -39 142 £393 +23.62% 94
London -19 64 £438 +25.00% 39
North West +7 25 £388 +127.94% 5
Cheshire - 24 £394 - 4
Chester - 20 £363 - 1
South East -1 19 £350 +12.00% 10
South West -9 13 £350 -22.13% 9
City of London -12 12 £306 -7.27% 2
Bristol - 12 £350 - 3
Yorkshire -17 11 £350 +29.62% 14
Buckinghamshire -11 9 £350 +16.66% 1
Leeds -16 8 £350 +34.61% 7
West Yorkshire -18 8 £350 +32.07% 10
Milton Keynes -10 7 £350 - 1
East of England -24 5 £400 +14.28% 8
Hampshire +7 4 £363 - 1
Cambridge +5 4 £400 +21.21% 5
Cambridgeshire -8 4 £400 +17.64% 6
Northamptonshire - 4 £388 - 2
East Midlands - 4 £388 - 5
Wales - 4 £375 - 1
South Wales - 4 £375 - 1
South Yorkshire - 3 - - 2
Cardiff - 3 £375 -
Staines +2 2 - - 1
Surrey -9 2 - - 2
Gloucestershire +3 1 £425 -5.45% 2
Manchester -14 1 £260 +52.94% 1
Berkshire - 1 - - 5
Middlesex - 1 - -

CentOS
Top 30 Related IT Skills

For the 6 months to 18 April 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.

1 204 (80.63%) Linux
2 161 (63.64%) Red Hat
3 131 (51.78%) Puppet
4 109 (43.08%) Apache
5 89 (35.18%) Red Hat Enterprise Linux
6 81 (32.02%) MySQL
7 75 (29.64%) PHP
8 74 (29.25%) Python
8 74 (29.25%) Opscode Chef
9 70 (27.67%) Amazon AWS
10 65 (25.69%) Web Services
11 64 (25.30%) Continuous Integration
12 60 (23.72%) Jenkins
12 60 (23.72%) Perl
12 60 (23.72%) Ruby
13 56 (22.13%) VMware
13 56 (22.13%) Windows
14 55 (21.74%) Nagios
15 53 (20.95%) DNS
15 53 (20.95%) Bash Shell
16 51 (20.16%) LAMP
17 49 (19.37%) MongoDB
17 49 (19.37%) Ubuntu
18 48 (18.97%) Configuration Management
18 48 (18.97%) UNIX
19 46 (18.18%) Agile Software Development
20 45 (17.79%) Java
20 45 (17.79%) VMware Infrastructure
21 43 (17.00%) Hudson
22 42 (16.60%) Amazon EC2

CentOS
Top Related IT Skills by Category

For the 6 months to 18 April 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
1 109 (43.08%) Apache
2 41 (16.21%) nginx
3 34 (13.44%) Tomcat
4 23 (9.09%) Node.js
5 16 (6.32%) Elasticsearch
6 13 (5.14%) OpenStack
7 12 (4.74%) IIS
8 8 (3.16%) WebSphere
8 8 (3.16%) Jetty
9 6 (2.37%) MS Exchange
10 5 (1.98%) Exchange Server 2010
11 4 (1.58%) SharePoint
11 4 (1.58%) SharePoint 2010
11 4 (1.58%) Office Communications Server
12 3 (1.19%) Moodle
13 2 (0.79%) WebLogic
13 2 (0.79%) Confluence
13 2 (0.79%) WordPress
13 2 (0.79%) Drupal
14 1 (0.40%) Exchange Server 2007
Applications
1 8 (3.16%) MS Excel
2 3 (1.19%) Mingle
3 1 (0.40%) MS Office
3 1 (0.40%) MS Visio
Business Applications
1 3 (1.19%) Oracle EBS
2 2 (0.79%) SAP ERP
2 2 (0.79%) SAP Oil and Gas
3 1 (0.40%) Oracle 11i
Cloud Services
1 70 (27.67%) Amazon AWS
2 42 (16.60%) Amazon EC2
3 33 (13.04%) Amazon S3
4 26 (10.28%) Amazon ELB
4 26 (10.28%) Route 53
5 20 (7.91%) SaaS
6 13 (5.14%) PaaS
7 10 (3.95%) Cloud Computing
8 6 (2.37%) Rackspace Cloud
9 5 (1.98%) IaaS
10 2 (0.79%) Joyent
10 2 (0.79%) GitHub
Communications & Networking
1 53 (20.95%) DNS
2 39 (15.42%) Firewall
3 30 (11.86%) HTTP
4 25 (9.88%) DHCP
5 19 (7.51%) LDAP
6 14 (5.53%) SSL
7 13 (5.14%) SMTP
7 13 (5.14%) TCP/IP
7 13 (5.14%) SSH
8 10 (3.95%) iSCSI
9 8 (3.16%) BIG-IP
9 8 (3.16%) Network Security
10 6 (2.37%) SNMP
10 6 (2.37%) VPN
10 6 (2.37%) IPsec
11 5 (1.98%) WAN
11 5 (1.98%) PPTP
12 4 (1.58%) SAN
12 4 (1.58%) LAN
13 3 (1.19%) Internet
Database & Business Intelligence
1 81 (32.02%) MySQL
2 49 (19.37%) MongoDB
3 30 (11.86%) NoSQL
4 23 (9.09%) Apache Cassandra
5 21 (8.30%) SQL Server
6 19 (7.51%) Big Data
7 17 (6.72%) CouchDB
8 16 (6.32%) Oracle Database
8 16 (6.32%) Redis
9 15 (5.93%) Riak
10 13 (5.14%) Hadoop
11 12 (4.74%) PostgreSQL
11 12 (4.74%) SQL Server 2008
12 11 (4.35%) Neo4j
12 11 (4.35%) RavenDB
13 8 (3.16%) Data Warehouse
14 7 (2.77%) Relational Database
15 6 (2.37%) Oracle Database 10g
16 5 (1.98%) Oracle Database 11g
17 2 (0.79%) RDBMS
Development Applications
1 60 (23.72%) Jenkins
2 43 (17.00%) Hudson
3 33 (13.04%) Git (software)
4 25 (9.88%) Subversion
4 25 (9.88%) Maven
5 11 (4.35%) TeamCity
5 11 (4.35%) MSTest
5 11 (4.35%) Visual Studio
5 11 (4.35%) NUnit
6 9 (3.56%) Cucumber
7 8 (3.16%) JUnit
7 8 (3.16%) FitNesse
8 4 (1.58%) Bitbucket
9 3 (1.19%) Eclipse
10 2 (0.79%) Ant
10 2 (0.79%) Mockito
10 2 (0.79%) Mercurial
10 2 (0.79%) PHPUnit
10 2 (0.79%) Selenium
10 2 (0.79%) JIRA
General
1 18 (7.11%) Finance
2 10 (3.95%) Retail
2 10 (3.95%) Marketing
3 9 (3.56%) Games
4 8 (3.16%) Pharmaceutical
5 5 (1.98%) Telecoms
6 4 (1.58%) Manufacturing
7 3 (1.19%) Publishing
7 3 (1.19%) Electronics
8 2 (0.79%) Advertising
8 2 (0.79%) Banking
9 1 (0.40%) Japanese Language
9 1 (0.40%) Legal
9 1 (0.40%) Back Office
Job Titles
1 57 (22.53%) DevOps Engineer
2 40 (15.81%) Administrator
3 37 (14.62%) Systems Administrator
4 30 (11.86%) Linux Engineer
5 29 (11.46%) Developer
6 23 (9.09%) Linux Administrator
7 22 (8.70%) Systems Engineer
8 21 (8.30%) Linux Systems Administrator
9 15 (5.93%) Support Engineer
10 14 (5.53%) Software Engineer
11 8 (3.16%) C# Developer
11 8 (3.16%) Cloud Engineer
12 7 (2.77%) UNIX Systems Administrator
12 7 (2.77%) Senior Software Engineer
12 7 (2.77%) Consultant
13 6 (2.37%) Senior Developer
13 6 (2.37%) UNIX Administrator
14 5 (1.98%) Systems Support Engineer
14 5 (1.98%) Systems Support
14 5 (1.98%) Programmer
Libraries, Frameworks & Software Standards
1 65 (25.69%) Web Services
2 51 (20.16%) LAMP
3 29 (11.46%) XML
4 26 (10.28%) HTML
5 22 (8.70%) RESTful
6 20 (7.91%) CSS
7 18 (7.11%) JSON
8 16 (6.32%) HTML5
8 16 (6.32%) CSS3
9 12 (4.74%) .NET
9 12 (4.74%) RabbitMQ
9 12 (4.74%) jQuery
10 11 (4.35%) ASP.NET MVC 4
10 11 (4.35%) ASP.NET MVC
10 11 (4.35%) KnockoutJS
10 11 (4.35%) ASP.NET
11 10 (3.95%) Zend Framework
12 9 (3.56%) Servlets
13 8 (3.16%) Silverlight
14 7 (2.77%) Software Packaging
Miscellaneous
1 42 (16.60%) Open Source
2 13 (5.14%) Replication
2 13 (5.14%) Clustering
3 9 (3.56%) NHS
4 8 (3.16%) Derivative
5 6 (2.37%) Management Information System
5 6 (2.37%) Computer Science
5 6 (2.37%) Online Games
6 4 (1.58%) Blackberry
7 2 (0.79%) DTV
7 2 (0.79%) Visualisation
7 2 (0.79%) Wiki
7 2 (0.79%) Social Network
8 1 (0.40%) PKI
8 1 (0.40%) IPTV
8 1 (0.40%) Mobile Banking
8 1 (0.40%) Mobile App
8 1 (0.40%) Enterprise Storage
8 1 (0.40%) STB
8 1 (0.40%) Device Driver
Operating Systems
1 204 (80.63%) Linux
2 89 (35.18%) Red Hat Enterprise Linux
3 56 (22.13%) Windows
4 49 (19.37%) Ubuntu
5 48 (18.97%) UNIX
6 34 (13.44%) Debian
7 20 (7.91%) Windows Server 2008
8 11 (4.35%) Windows Server 2003
9 9 (3.56%) Oracle Linux
9 9 (3.56%) Fedora
9 9 (3.56%) Solaris
10 8 (3.16%) Windows 7
11 6 (2.37%) SUSE
12 4 (1.58%) Windows Server 2012
13 3 (1.19%) Scientific Linux
14 2 (0.79%) Mac OS X
15 1 (0.40%) Windows Mobile
15 1 (0.40%) Android
15 1 (0.40%) Mac OS X Server
15 1 (0.40%) Windows 8
Processes & Methodologies
1 64 (25.30%) Continuous Integration
2 48 (18.97%) Configuration Management
3 46 (18.18%) Agile Software Development
4 24 (9.49%) E-Commerce
5 23 (9.09%) TDD
6 21 (8.30%) Load Balancing
7 18 (7.11%) OO
7 18 (7.11%) BDD
8 17 (6.72%) Performance Tuning
9 16 (6.32%) Software Engineering
10 13 (5.14%) ITIL
11 12 (4.74%) Workflow
12 11 (4.35%) Unit Testing
12 11 (4.35%) CQRS
12 11 (4.35%) Migration
12 11 (4.35%) MVC
12 11 (4.35%) Disaster Recovery
13 9 (3.56%) Automated Testing
13 9 (3.56%) Scrum
14 8 (3.16%) Project Management
Programming Languages
1 75 (29.64%) PHP
2 74 (29.25%) Python
3 60 (23.72%) Perl
3 60 (23.72%) Ruby
4 53 (20.95%) Bash Shell
5 45 (17.79%) Java
6 27 (10.67%) Shell Script
7 18 (7.11%) JavaScript
8 17 (6.72%) SQL
9 15 (5.93%) PowerShell
10 11 (4.35%) C#
11 10 (3.95%) PHP5
12 5 (1.98%) sed
12 5 (1.98%) AWK
13 2 (0.79%) C++
13 2 (0.79%) C
13 2 (0.79%) Korn
14 1 (0.40%) C-shell
14 1 (0.40%) Scala
14 1 (0.40%) Groovy
Qualifications
1 17 (6.72%) Security Cleared
2 14 (5.53%) SC Cleared
3 7 (2.77%) Degree
4 5 (1.98%) DV Cleared
4 5 (1.98%) RHCE
5 3 (1.19%) Cisco Certification
5 3 (1.19%) ISEB
6 2 (0.79%) CCNA
6 2 (0.79%) Microsoft Certification
7 1 (0.40%) ISTQB
7 1 (0.40%) MCTS
7 1 (0.40%) LPIC
7 1 (0.40%) RHCT
7 1 (0.40%) CCSA
7 1 (0.40%) CCNP
7 1 (0.40%) OCP
7 1 (0.40%) Oracle Certification
7 1 (0.40%) MCSE
7 1 (0.40%) MCSD
Quality Assurance & Compliance
1 24 (9.49%) QA
2 7 (2.77%) SLA
3 1 (0.40%) PCI DSS
System Software
1 45 (17.79%) VMware Infrastructure
2 26 (10.28%) Active Directory
3 24 (9.49%) NFS
4 23 (9.09%) Xen
5 17 (6.72%) Varnish
6 12 (4.74%) VMware ESX
6 12 (4.74%) VMware ESXi
6 12 (4.74%) KVM
7 7 (2.77%) Sendmail
7 7 (2.77%) Hyper-V
7 7 (2.77%) vCloud
8 6 (2.37%) Squid
8 6 (2.37%) XenServer
8 6 (2.37%) Postfix
9 5 (1.98%) Oracle RAC
9 5 (1.98%) VirtualBox
10 4 (1.58%) Shibboleth
11 3 (1.19%) Apache Flume
12 2 (0.79%) Samba
12 2 (0.79%) vSphere
Systems Management
1 131 (51.78%) Puppet
2 74 (29.25%) Opscode Chef
3 55 (21.74%) Nagios
4 37 (14.62%) Vagrant
5 28 (11.07%) ZABBIX
6 25 (9.88%) Cacti
7 17 (6.72%) StatsD
8 12 (4.74%) Ansible
9 9 (3.56%) HAProxy
10 8 (3.16%) Red Hat Spacewalk
11 7 (2.77%) Munin
12 6 (2.37%) Cobbler
13 4 (1.58%) Tivoli Storage Manager
13 4 (1.58%) collectd
13 4 (1.58%) Capistrano
13 4 (1.58%) Zenoss
14 3 (1.19%) Foglight
15 2 (0.79%) YUM
15 2 (0.79%) SCCM
16 1 (0.40%) WSUS
Vendors
1 161 (63.64%) Red Hat
2 56 (22.13%) VMware
3 33 (13.04%) Rackspace
4 27 (10.67%) Oracle
5 24 (9.49%) Cisco
6 23 (9.09%) HP
7 22 (8.70%) RightScale
8 21 (8.30%) Microsoft
9 19 (7.51%) Splunk
9 19 (7.51%) NetApp
10 12 (4.74%) Percona
11 10 (3.95%) Zend
12 8 (3.16%) Citrix
13 7 (2.77%) IBM
13 7 (2.77%) EMC
14 5 (1.98%) F5
14 5 (1.98%) Dell
14 5 (1.98%) CheckPoint
14 5 (1.98%) SAP
15 4 (1.58%) Veritas
Reading, Berkshire
Stafford-Sharp Associates
Rate: From £300 to £425 per day
Posted: Yesterday
West Yorkshire
QUANTICA
Posted: Yesterday
London
Harvey Nash plc
Rate: £425 per day
Posted: Yesterday
Chester, Cheshire
HAYS INFORMATION TECHNOLOGY
Rate: £375.00 - £400.00 per annum
Posted: 2 days ago
Gloucester
Computer Futures
Rate: £300 - £400 per day
Posted: 2 days ago
Milton Keynes, Buckinghamshire
Certes Computing Ltd (Birmingham)
Rate: Negotiable
Posted: 3 days ago
Gloucester, Gloucestershire
Coal IT Services
Rate: From £400 to £450 per day
Posted: 3 days ago
Cambridge
Hays IT - Uk Posting account
Rate: £240.00 per day
Posted: 7 days ago
London
Opus Recruitment Solutions Ltd
Rate: Market Rate
Posted: 9 days ago
London
Digital Gurus
Rate: £375 - £425 Per Day
Posted: 11 days ago
London
Computer Futures
Posted: 21 days ago