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 May 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 May 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 394 408 462
Rank change year-on-year
+14 +54
Contract jobs citing CentOS 233 185 81
As % of all contract IT jobs located in the UK 0.42% 0.35% 0.17%
As % of the Operating Systems category 1.91% 1.55% 0.81%
Number of daily rates quoted 149 116 44
Average daily rate
Keep up to 90%
of your Daily Rate
Get a Free Illustration
£400 £353 £300
Average daily rate % change year-on-year
+13.47% +17.40%
90% offered a daily rate of more than £227 £181 £170
10% offered a daily rate of more than £505 £488 £425
UK excluding London average daily rate £375 £350 £285
% change year-on-year
+7.14% +22.80%
Number of hourly rates quoted 0 5 5
Average hourly rate - £17.50 £35.50
Average hourly rate % change year-on-year
- -50.70%
UK excluding London average hourly rate - £17.50 £34.00
% change year-on-year
- -48.52%

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
12205 11946 10017
As % of all contract IT jobs located in the UK 22.12% 22.65% 21.59%
Number of daily rates quoted 7050 6806 5380
Average daily rate £363 £350 £360
Average daily rate % change year-on-year
+3.57% -2.77%
90% offered a daily rate of more than £170 £160 £200
10% offered a daily rate of more than £525 £500 £500
UK excluding London average daily rate £350 £315 £325
% change year-on-year
+11.11% -3.07%
Number of hourly rates quoted 1012 1042 956
Average hourly rate £16.50 £15.75 £17.50
Average hourly rate % change year-on-year
+4.76% -10.00%
90% offered a hourly rate of more than £11.00 £11.00 £11.00
10% offered a hourly rate of more than £37.85 £34.00 £38.50
UK excluding London average hourly rate £16.00 £15.50 £16.20
% change year-on-year
+3.22% -4.32%

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 May 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 May 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 +16 227 £395 +12.85% 107
London +60 96 £450 +12.50% 44
Yorkshire -16 39 £243 +31.08% 5
South East -15 31 £375 +1.69% 31
North West -20 28 £418 +6.03% 6
South West +10 23 £375 - 10
Bristol +7 22 £375 +7.14% 6
Leeds -17 22 £225 +21.62% 2
West Yorkshire -22 22 £225 +21.62% 2
South Yorkshire +5 17 £400 - 2
Oxfordshire - 12 £413 - 2
Manchester - 12 £220 - 5
Hampshire +13 11 £263 -20.45% 5
City of London +3 11 £450 +38.46% 14
Sheffield - 11 £400 - 2
Cheshire -22 10 £425 +9.67% 1
Chester -8 9 £425 +13.33% 1
Croydon - 8 £438 -
Oxford - 7 £470 - 2
Lancashire +14 6 £475 +11.76%
Burnley +9 6 £475 +11.76%
Farnborough - 6 £239 - 2
Berkshire +2 5 £350 -13.84% 16
East Midlands -16 5 £438 +9.37% 1
East of England -2 4 - - 8
Northamptonshire -8 4 £500 +25.00%
Northampton - 4 £500 -
Altrincham - 3 - - 1
Bicester - 3 £375 -
Cambridge -3 2 - - 4

CentOS
Top 30 Related IT Skills

For the 6 months to 27 May 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.

1 410 (87.42%) Linux
2 232 (49.47%) Puppet
3 224 (47.76%) Red Hat
4 197 (42.00%) DevOps
5 177 (37.74%) Ubuntu
6 173 (36.89%) Jenkins
7 165 (35.18%) Python
8 162 (34.54%) Continuous Integration
8 162 (34.54%) Bash Shell
9 158 (33.69%) Git (software)
10 154 (32.84%) MySQL
11 153 (32.62%) Agile Software Development
12 143 (30.49%) Red Hat Enterprise Linux
13 139 (29.64%) Java
14 138 (29.42%) VMware
15 136 (29.00%) Apache
16 127 (27.08%) Opscode Chef
17 118 (25.16%) PHP
18 116 (24.73%) Ruby
19 113 (24.09%) Windows
20 104 (22.17%) Perl
21 99 (21.11%) Amazon AWS
22 95 (20.26%) Configuration Management
23 93 (19.83%) MongoDB
24 88 (18.76%) Firewall
25 77 (16.42%) Security Cleared
26 74 (15.78%) ZABBIX
27 72 (15.35%) Web Services
27 72 (15.35%) UNIX
28 70 (14.93%) Ansible

CentOS
Top Related IT Skills by Category

For the 6 months to 27 May 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
1 136 (29.00%) Apache
2 56 (11.94%) nginx
3 55 (11.73%) Tomcat
4 43 (9.17%) Confluence
5 36 (7.68%) OpenStack
6 35 (7.46%) Node.js
7 34 (7.25%) JBoss
8 30 (6.40%) IIS
9 18 (3.84%) MediaWiki
10 17 (3.62%) Elasticsearch
11 15 (3.20%) Mule ESB
12 11 (2.35%) WildFly
12 11 (2.35%) Alfresco
13 9 (1.92%) CMS
13 9 (1.92%) SharePoint
14 8 (1.71%) Drupal
14 8 (1.71%) Cloud Foundry
15 7 (1.49%) WebLogic
16 6 (1.28%) Mule
16 6 (1.28%) WordPress
Applications
1 20 (4.26%) MS Excel
2 7 (1.49%) MS Office
3 1 (0.21%) Photoshop
3 1 (0.21%) MS Visio
Business Applications
1 5 (1.07%) SAP Oil and Gas
2 4 (0.85%) Oracle BPM
3 1 (0.21%) ResourceLink
3 1 (0.21%) AWD
3 1 (0.21%) Oracle EBS
3 1 (0.21%) Oracle Applications
3 1 (0.21%) Hyperion Enterprise
Cloud Services
1 99 (21.11%) Amazon AWS
2 38 (8.10%) Amazon S3
3 35 (7.46%) Amazon EC2
4 30 (6.40%) PaaS
5 19 (4.05%) Amazon ELB
6 15 (3.20%) Route 53
7 11 (2.35%) Google Cloud Platform
8 9 (1.92%) IaaS
9 8 (1.71%) SaaS
9 8 (1.71%) Heroku
9 8 (1.71%) Engine Yard
10 6 (1.28%) Microsoft Azure
11 5 (1.07%) GitHub
11 5 (1.07%) OpenShift
12 4 (0.85%) Cloud Computing
13 3 (0.64%) Virtual Private Cloud
14 2 (0.43%) Amazon SQS
14 2 (0.43%) Rackspace Cloud
14 2 (0.43%) AWS CloudFormation
15 1 (0.21%) Amazon CloudWatch
Communications & Networking
1 88 (18.76%) Firewall
2 47 (10.02%) LDAP
3 43 (9.17%) VPN
4 41 (8.74%) DNS
5 35 (7.46%) LAN
6 32 (6.82%) VLAN
7 30 (6.40%) SAN
8 27 (5.76%) WAN
9 26 (5.54%) SSL
9 26 (5.54%) TCP/IP
10 24 (5.12%) Network Security
11 19 (4.05%) iSCSI
12 17 (3.62%) HTTP
13 15 (3.20%) IPsec
14 14 (2.99%) OSPF
14 14 (2.99%) BGP
14 14 (2.99%) EIGRP
14 14 (2.99%) IPv6
15 12 (2.56%) Internet
16 10 (2.13%) Reverse Proxy
Database & Business Intelligence
1 154 (32.84%) MySQL
2 93 (19.83%) MongoDB
3 61 (13.01%) NoSQL
4 59 (12.58%) PostgreSQL
5 34 (7.25%) Redis
6 33 (7.04%) Hadoop
7 29 (6.18%) Apache Cassandra
8 25 (5.33%) SQL Server
8 25 (5.33%) Relational Database
9 22 (4.69%) CouchDB
10 14 (2.99%) RDBMS
11 10 (2.13%) Riak
11 10 (2.13%) Big Data
11 10 (2.13%) SQL Server 2012
12 9 (1.92%) HBase
13 8 (1.71%) MariaDB
14 4 (0.85%) Infinispan
14 4 (0.85%) InterSystems Cache
15 3 (0.64%) SQL Server Reporting Services
15 3 (0.64%) SQL Server Integration Services
Development Applications
1 173 (36.89%) Jenkins
2 158 (33.69%) Git (software)
3 67 (14.29%) Maven
4 66 (14.07%) Subversion
5 47 (10.02%) JIRA
6 44 (9.38%) Hudson
7 29 (6.18%) Artifactory
8 22 (4.69%) PHPUnit
9 21 (4.48%) SonarQube
10 18 (3.84%) Selenium
10 18 (3.84%) JMeter
11 17 (3.62%) Gerrit
11 17 (3.62%) Gradle
12 10 (2.13%) Cucumber
12 10 (2.13%) Mercurial
13 8 (1.71%) JUnit
14 7 (1.49%) IntelliJ
14 7 (1.49%) Atlassian Bamboo
14 7 (1.49%) Spock
14 7 (1.49%) Geb
General
1 26 (5.54%) Finance
2 14 (2.99%) Telecoms
3 8 (1.71%) Marketing
4 7 (1.49%) Games
5 6 (1.28%) Electronics
6 5 (1.07%) Manufacturing
7 3 (0.64%) Advertising
7 3 (0.64%) Retail
8 2 (0.43%) Military
9 1 (0.21%) Banking
9 1 (0.21%) Billing
9 1 (0.21%) Back Office
Job Titles
1 131 (27.93%) DevOps Engineer
2 78 (16.63%) Administrator
3 66 (14.07%) Systems Administrator
4 60 (12.79%) Developer
4 60 (12.79%) Linux Administrator
5 46 (9.81%) Linux Systems Administrator
6 43 (9.17%) Linux Engineer
7 38 (8.10%) Senior DevOps Engineer
8 33 (7.04%) Linux DevOps Engineer
9 25 (5.33%) PHP Developer
10 18 (3.84%) Architect
10 18 (3.84%) Infrastructure Engineer
11 16 (3.41%) Systems Engineer
11 16 (3.41%) Support Engineer
12 15 (3.20%) Software Engineer
13 13 (2.77%) Java Developer
14 11 (2.35%) Technical Support
14 11 (2.35%) Linux Support
15 10 (2.13%) DevOps Specialist
15 10 (2.13%) Network Engineer
Libraries, Frameworks & Software Standards
1 72 (15.35%) Web Services
2 51 (10.87%) LAMP
3 49 (10.45%) HTML
4 46 (9.81%) jQuery
5 42 (8.96%) RabbitMQ
6 38 (8.10%) HTML5
7 31 (6.61%) CSS
8 24 (5.12%) Doctrine
9 23 (4.90%) Spring
10 21 (4.48%) Zend Framework
10 21 (4.48%) XML
11 20 (4.26%) JSON
11 20 (4.26%) MCollective
12 18 (3.84%) RESTful
13 17 (3.62%) J2EE
14 16 (3.41%) Kafka
15 15 (3.20%) Apache Camel
15 15 (3.20%) Twitter Bootstrap
16 14 (2.99%) CSS3
17 13 (2.77%) REST
Miscellaneous
1 53 (11.30%) Data Centre
2 39 (8.32%) Clustering
3 18 (3.84%) Wiki
4 15 (3.20%) Analytical Skills
5 13 (2.77%) NHS
5 13 (2.77%) Smartcard
5 13 (2.77%) Device Driver
6 12 (2.56%) User Experience
6 12 (2.56%) Private Cloud
6 12 (2.56%) Hybrid Cloud
7 9 (1.92%) Management Information System
7 9 (1.92%) Computer Science
8 8 (1.71%) PKI
9 6 (1.28%) Online Games
10 5 (1.07%) Fat Client
10 5 (1.07%) DTV
10 5 (1.07%) W3C
10 5 (1.07%) Thin Client
11 4 (0.85%) Enterprise Software
12 3 (0.64%) EqualLogic
Operating Systems
1 410 (87.42%) Linux
2 177 (37.74%) Ubuntu
3 143 (30.49%) Red Hat Enterprise Linux
4 113 (24.09%) Windows
5 72 (15.35%) UNIX
6 51 (10.87%) Debian
7 34 (7.25%) Fedora
7 34 (7.25%) Windows Server 2003
8 32 (6.82%) Windows Server 2008
9 20 (4.26%) Windows Server 2012
10 13 (2.77%) Windows 7
11 12 (2.56%) Solaris
12 7 (1.49%) SUSE
12 7 (1.49%) Windows 8
13 6 (1.28%) Oracle Linux
13 6 (1.28%) HPUX
14 5 (1.07%) Windows XP
15 3 (0.64%) VMS
15 3 (0.64%) Windows 2000
15 3 (0.64%) Android
Processes & Methodologies
1 197 (42.00%) DevOps
2 162 (34.54%) Continuous Integration
3 153 (32.62%) Agile Software Development
4 95 (20.26%) Configuration Management
5 64 (13.65%) Scrum
6 53 (11.30%) Open Source
7 51 (10.87%) Load Balancing
7 51 (10.87%) ITIL
8 35 (7.46%) Workflow
8 35 (7.46%) Build Automation
9 32 (6.82%) Service Management
10 31 (6.61%) TDD
10 31 (6.61%) Automated Testing
11 28 (5.97%) Software Engineering
12 27 (5.76%) Mentoring
13 26 (5.54%) Continuous Delivery
14 24 (5.12%) Microservices
15 22 (4.69%) Change Management
16 20 (4.26%) E-Commerce
16 20 (4.26%) Capacity Planning
Programming Languages
1 165 (35.18%) Python
2 162 (34.54%) Bash Shell
3 139 (29.64%) Java
4 118 (25.16%) PHP
5 116 (24.73%) Ruby
6 104 (22.17%) Perl
7 64 (13.65%) JavaScript
8 60 (12.79%) SQL
9 52 (11.09%) Shell Script
10 12 (2.56%) Korn
10 12 (2.56%) Scala
10 12 (2.56%) Groovy
11 9 (1.92%) C++
12 7 (1.49%) C
12 7 (1.49%) C#
13 6 (1.28%) Go
14 4 (0.85%) PHP5
15 2 (0.43%) PowerShell
15 2 (0.43%) sed
16 1 (0.21%) PL/SQL
Qualifications
1 77 (16.42%) Security Cleared
2 50 (10.66%) SC Cleared
3 22 (4.69%) CCNA
3 22 (4.69%) Cisco Certification
4 12 (2.56%) Degree
4 12 (2.56%) DV Cleared
5 11 (2.35%) RHCE
6 8 (1.71%) RHCT
7 3 (0.64%) JNCIA
7 3 (0.64%) JNCIS
7 3 (0.64%) CCNP
8 2 (0.43%) MCSE
8 2 (0.43%) Microsoft Certification
8 2 (0.43%) CTC Cleared
9 1 (0.21%) BC Cleared
Quality Assurance & Compliance
1 32 (6.82%) QA
2 6 (1.28%) SLA
3 5 (1.07%) WAI
4 3 (0.64%) PCI DSS
5 1 (0.21%) ISO 9001
5 1 (0.21%) ISO/IEC 27001
System Software
1 69 (14.71%) VMware Infrastructure
2 47 (10.02%) Active Directory
2 47 (10.02%) Docker
3 36 (7.68%) vCloud
4 28 (5.97%) iptables
4 28 (5.97%) Postfix
5 21 (4.48%) Samba
6 17 (3.62%) Hyper-V
7 16 (3.41%) vSphere
8 15 (3.20%) XenServer
9 14 (2.99%) NFS
10 11 (2.35%) Firmware
11 8 (1.71%) VMware ESXi
12 7 (1.49%) VMware Server
12 7 (1.49%) Varnish
13 6 (1.28%) Terminal Services
14 5 (1.07%) Squid
14 5 (1.07%) Xen
14 5 (1.07%) qmail
15 4 (0.85%) SpamAssassin
Systems Management
1 232 (49.47%) Puppet
2 127 (27.08%) Opscode Chef
3 74 (15.78%) ZABBIX
4 70 (14.93%) Ansible
5 68 (14.50%) Nagios
6 60 (12.79%) Salt
7 31 (6.61%) Graphite
8 29 (6.18%) Vagrant
9 26 (5.54%) Rundeck
10 23 (4.90%) Kibana
10 23 (4.90%) HAProxy
11 20 (4.26%) logstash
11 20 (4.26%) Cobbler
12 18 (3.84%) Cacti
13 12 (2.56%) SELinux
14 9 (1.92%) FortiGate
14 9 (1.92%) yum
15 7 (1.49%) OVSD
16 6 (1.28%) Zenoss
16 6 (1.28%) Graylog
Vendors
1 224 (47.76%) Red Hat
2 138 (29.42%) VMware
3 60 (12.79%) Splunk
4 52 (11.09%) Cisco
5 43 (9.17%) Microsoft
6 37 (7.89%) Oracle
7 26 (5.54%) Zend
8 22 (4.69%) Citrix
9 19 (4.05%) NetApp
9 19 (4.05%) HP
10 15 (3.20%) Google
11 14 (2.99%) Rackspace
12 11 (2.35%) Perforce
13 10 (2.13%) Dell
14 9 (1.92%) Percona
15 8 (1.71%) F5
16 7 (1.49%) EMC
17 6 (1.28%) New Relic
17 6 (1.28%) AppDynamics
18 5 (1.07%) Twitter
Chester, Cheshire
TEKsystems
Posted: 19 hours ago
Farnborough, Hampshire
ComputAppoint
Rate: £300 - £420 per day
Posted: Yesterday
Hungerford, Berkshire
Involved Solutions Ltd
Rate: £350 - £400 per day + TBA
Posted: Yesterday
Bristol, Avon
Reed Technology
Rate: £300 - £350 per day + +
Posted: 5 days ago
City, London
E-synergy Solutions
Rate: £400 - £450 per day
Posted: 5 days ago
Bristol, Avon
People Source Consulting
Rate: £350 - £425 per day
Posted: 5 days ago
London
Mercator IT Solutions
Salary: £Good market rates with longer term salary + share options
Posted: 5 days ago
City of London
Templeton and Partners - SAP & UK Account
Rate: £475 - 535 per day
Posted: 6 days ago
Swindon
Computer Futures
Rate: £350 - £400 per day + competitive
Posted: 8 days ago
South East London
Lawrence Harvey
Rate: £540 per day
Posted: 15 days ago
Swindon
Computer Futures
Rate: £250 - £400 per day + competitive
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