The table below looks at the statistics for CentOS skills in IT contracts advertised for the England region. Included is a guide to the average contractor rates offered in IT contracts that have cited CentOS over the 3 months to 28 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
28 May 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 372 388 443
Rank change year-on-year
+16 +55
Contract jobs citing CentOS 224 181 86
As % of all contract IT jobs located in England 0.45% 0.37% 0.20%
As % of the Operating Systems category 2.01% 1.62% 0.92%
Number of daily rates quoted 141 113 49
Average daily rate
Keep up to 90%
of your Daily Rate
Get a Free Illustration
£388 £355 £338
Average daily rate % change year-on-year
+9.15% +5.18%
90% offered a daily rate of more than £225 £183 £170
10% offered a daily rate of more than £505 £490 £413
UK excluding London average daily rate £375 £350 £300
% change year-on-year
+7.14% +16.66%
Number of hourly rates quoted 0 4 5
Average hourly rate - £16.75 £35.50
Average hourly rate % change year-on-year
- -52.81%
UK excluding London average hourly rate - £16.75 £34.00
% change year-on-year
- -50.73%
CentOS
UK

The following table is for comparison with the above and provides statistics for the entire Operating Systems category in contract jobs advertised in the England region.

Operating Systems Category
England
Contract IT job ads with a match in the
Operating Systems category
11151 11172 9310
As % of all contract IT jobs located in England 22.29% 22.65% 21.84%
Number of daily rates quoted 6537 6469 5106
Average daily rate £363 £350 £363
Average daily rate % change year-on-year
+3.57% -3.44%
90% offered a daily rate of more than £175 £165 £200
10% offered a daily rate of more than £535 £500 £501
UK excluding London average daily rate £350 £313 £325
% change year-on-year
+12.00% -3.84%
Number of hourly rates quoted 912 993 935
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 £10.50 £11.00
10% offered a hourly rate of more than £37.50 £33.50 £37.74
UK excluding London average hourly rate £16.00 £15.50 £16.20
% change year-on-year
+3.22% -4.32%

CentOS
Jobs Demand Trend in England

This chart provides a 3-month moving total of IT contractor jobs citing CentOS across the England region as a proportion of the total demand within the Operating Systems category.

CentOS Jobs Demand Trend in England

CentOS
Daily Rate Trend in England

This chart provides the 3-month moving average for daily rates quoted in IT contract jobs citing CentOS across the England region.

CentOS Daily Rate Trend in England

CentOS
Daily Rate Histogram in England

This chart provides a histogram of daily rates quoted in contract IT jobs citing CentOS across the England region over the 3 months to 28 May 2015.

CentOS Daily Rate Histogram in England

CentOS
Hourly Rate Trend in England

This chart provides the 3-month moving average for hourly rates quoted in IT contractor jobs citing CentOS across the England region.

CentOS Hourly Rate Trend in England

CentOS
Contract Job Locations in England

The table below looks at the demand and provides a guide to the average contractor rates quoted in IT jobs citing CentOS within the England region over the 3 months to 28 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
London +63 95 £450 +12.50% 42
Yorkshire -14 38 £240 +29.72% 6
South East -16 30 £375 +1.69% 32
North West -10 28 £418 +7.74% 7
South West +8 24 £375 - 12
East Midlands -7 5 £438 +9.37% 1
East of England +7 4 - - 8
CentOS
UK

CentOS
Top 30 Related IT Skills in England

For the 6 months to 28 May 2015, IT contractor jobs across the England region 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.

1 398 (87.09%) Linux
2 230 (50.33%) Puppet
3 215 (47.05%) Red Hat
4 195 (42.67%) DevOps
5 176 (38.51%) Ubuntu
6 172 (37.64%) Jenkins
7 160 (35.01%) Python
8 159 (34.79%) Continuous Integration
9 158 (34.57%) Bash Shell
10 156 (34.14%) Git (software)
11 155 (33.92%) MySQL
12 150 (32.82%) Agile Software Development
13 138 (30.20%) VMware
14 136 (29.76%) Java
15 135 (29.54%) Apache
16 132 (28.88%) Red Hat Enterprise Linux
17 128 (28.01%) Opscode Chef
18 116 (25.38%) PHP
19 114 (24.95%) Ruby
20 105 (22.98%) Perl
21 104 (22.76%) Windows
22 97 (21.23%) Amazon AWS
23 94 (20.57%) MongoDB
24 92 (20.13%) Configuration Management
25 89 (19.47%) Firewall
26 77 (16.85%) Security Cleared
27 75 (16.41%) ZABBIX
28 72 (15.75%) Web Services
29 71 (15.54%) UNIX
30 70 (15.32%) Ansible

CentOS
Top Related IT Skills in England by Category

For the 6 months to 28 May 2015, IT contractor jobs across the England region 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
1 135 (29.54%) Apache
2 57 (12.47%) Tomcat
3 56 (12.25%) nginx
4 43 (9.41%) Confluence
5 36 (7.88%) OpenStack
6 35 (7.66%) Node.js
6 35 (7.66%) JBoss
7 29 (6.35%) IIS
8 18 (3.94%) MediaWiki
9 17 (3.72%) Elasticsearch
10 16 (3.50%) Mule ESB
11 11 (2.41%) WildFly
11 11 (2.41%) Alfresco
12 9 (1.97%) CMS
12 9 (1.97%) SharePoint
13 8 (1.75%) Drupal
13 8 (1.75%) Cloud Foundry
14 7 (1.53%) WebLogic
15 6 (1.31%) Mule
15 6 (1.31%) WordPress
Applications
1 15 (3.28%) MS Excel
2 7 (1.53%) MS Office
3 1 (0.22%) MS Visio
3 1 (0.22%) Photoshop
Business Applications
1 4 (0.88%) SAP Oil and Gas
1 4 (0.88%) Oracle BPM
2 1 (0.22%) Oracle Applications
2 1 (0.22%) Oracle EBS
2 1 (0.22%) AWD
2 1 (0.22%) Hyperion Enterprise
2 1 (0.22%) ResourceLink
Cloud Services
1 97 (21.23%) Amazon AWS
2 34 (7.44%) Amazon S3
3 31 (6.78%) Amazon EC2
4 29 (6.35%) PaaS
5 19 (4.16%) Amazon ELB
6 15 (3.28%) Route 53
7 12 (2.63%) Google Cloud Platform
8 9 (1.97%) IaaS
9 8 (1.75%) SaaS
9 8 (1.75%) Heroku
9 8 (1.75%) Engine Yard
10 6 (1.31%) Microsoft Azure
11 5 (1.09%) OpenShift
11 5 (1.09%) GitHub
12 4 (0.88%) Cloud Computing
13 3 (0.66%) Virtual Private Cloud
14 2 (0.44%) Rackspace Cloud
14 2 (0.44%) Amazon SQS
15 1 (0.22%) Amazon CloudWatch
15 1 (0.22%) AWS CloudFormation
Communications & Networking
1 89 (19.47%) Firewall
2 47 (10.28%) LDAP
3 44 (9.63%) VPN
4 41 (8.97%) DNS
5 35 (7.66%) LAN
6 32 (7.00%) VLAN
7 30 (6.56%) SAN
8 27 (5.91%) WAN
9 26 (5.69%) TCP/IP
9 26 (5.69%) SSL
10 24 (5.25%) Network Security
11 19 (4.16%) iSCSI
12 17 (3.72%) HTTP
13 15 (3.28%) IPsec
14 14 (3.06%) IPv6
14 14 (3.06%) OSPF
14 14 (3.06%) BGP
14 14 (3.06%) EIGRP
15 12 (2.63%) Internet
16 11 (2.41%) Reverse Proxy
Database & Business Intelligence
1 155 (33.92%) MySQL
2 94 (20.57%) MongoDB
3 62 (13.57%) NoSQL
4 61 (13.35%) PostgreSQL
5 35 (7.66%) Redis
6 33 (7.22%) Hadoop
7 29 (6.35%) Apache Cassandra
8 26 (5.69%) SQL Server
9 25 (5.47%) Relational Database
10 22 (4.81%) CouchDB
11 14 (3.06%) RDBMS
12 10 (2.19%) Riak
12 10 (2.19%) Big Data
12 10 (2.19%) SQL Server 2012
13 9 (1.97%) HBase
14 8 (1.75%) MariaDB
15 4 (0.88%) InterSystems Cache
15 4 (0.88%) Infinispan
16 3 (0.66%) Amazon RDS
16 3 (0.66%) SQL Server 2008
Development Applications
1 172 (37.64%) Jenkins
2 156 (34.14%) Git (software)
3 66 (14.44%) Subversion
4 65 (14.22%) Maven
5 47 (10.28%) JIRA
6 44 (9.63%) Hudson
7 30 (6.56%) Artifactory
8 22 (4.81%) SonarQube
9 21 (4.60%) PHPUnit
10 18 (3.94%) Selenium
10 18 (3.94%) Gerrit
10 18 (3.94%) JMeter
11 17 (3.72%) Gradle
12 11 (2.41%) Mercurial
13 10 (2.19%) Cucumber
14 8 (1.75%) JUnit
15 7 (1.53%) Geb
15 7 (1.53%) Spock
15 7 (1.53%) IntelliJ
15 7 (1.53%) Atlassian Bamboo
General
1 24 (5.25%) Finance
2 13 (2.84%) Telecoms
3 7 (1.53%) Games
3 7 (1.53%) Marketing
4 5 (1.09%) Electronics
5 4 (0.88%) Manufacturing
6 3 (0.66%) Advertising
6 3 (0.66%) Retail
7 2 (0.44%) Military
8 1 (0.22%) Back Office
8 1 (0.22%) Banking
8 1 (0.22%) Billing
Job Titles
1 129 (28.23%) DevOps Engineer
2 73 (15.97%) Administrator
3 59 (12.91%) Developer
3 59 (12.91%) Systems Administrator
4 53 (11.60%) Linux Administrator
5 43 (9.41%) Linux Engineer
6 39 (8.53%) Linux Systems Administrator
7 37 (8.10%) Senior DevOps Engineer
8 32 (7.00%) Linux DevOps Engineer
9 24 (5.25%) PHP Developer
10 18 (3.94%) Infrastructure Engineer
10 18 (3.94%) Architect
11 15 (3.28%) Support Engineer
11 15 (3.28%) Systems Engineer
12 14 (3.06%) Software Engineer
13 13 (2.84%) Java Developer
14 11 (2.41%) Technical Support
15 10 (2.19%) Network Engineer
15 10 (2.19%) DevOps Specialist
16 9 (1.97%) 2nd Line Support
Libraries, Frameworks & Software Standards
1 72 (15.75%) Web Services
2 51 (11.16%) LAMP
3 48 (10.50%) HTML
4 45 (9.85%) jQuery
5 43 (9.41%) RabbitMQ
6 37 (8.10%) HTML5
7 31 (6.78%) CSS
8 23 (5.03%) Doctrine
8 23 (5.03%) Spring
9 21 (4.60%) XML
10 20 (4.38%) Zend Framework
10 20 (4.38%) JSON
10 20 (4.38%) MCollective
11 18 (3.94%) RESTful
11 18 (3.94%) J2EE
12 16 (3.50%) Kafka
13 15 (3.28%) Twitter Bootstrap
13 15 (3.28%) Apache Camel
14 14 (3.06%) CSS3
15 13 (2.84%) REST
Miscellaneous
1 54 (11.82%) Data Centre
2 39 (8.53%) Clustering
3 18 (3.94%) Wiki
4 15 (3.28%) Analytical Skills
5 13 (2.84%) Device Driver
5 13 (2.84%) Smartcard
5 13 (2.84%) NHS
6 12 (2.63%) User Experience
6 12 (2.63%) Private Cloud
6 12 (2.63%) Hybrid Cloud
7 9 (1.97%) Computer Science
8 8 (1.75%) PKI
8 8 (1.75%) Management Information System
9 6 (1.31%) Online Games
10 5 (1.09%) Enterprise Software
10 5 (1.09%) Thin Client
10 5 (1.09%) W3C
10 5 (1.09%) Fat Client
11 4 (0.88%) Client/Server
11 4 (0.88%) DTV
Operating Systems
1 398 (87.09%) Linux
2 176 (38.51%) Ubuntu
3 132 (28.88%) Red Hat Enterprise Linux
4 104 (22.76%) Windows
5 71 (15.54%) UNIX
6 51 (11.16%) Debian
7 35 (7.66%) Windows Server 2003
8 32 (7.00%) Windows Server 2008
9 26 (5.69%) Fedora
10 21 (4.60%) Windows Server 2012
11 13 (2.84%) Windows 7
12 11 (2.41%) Solaris
13 7 (1.53%) Windows 8
13 7 (1.53%) SUSE
14 6 (1.31%) Oracle Linux
14 6 (1.31%) HPUX
15 5 (1.09%) Windows XP
16 3 (0.66%) Amazon Linux
16 3 (0.66%) VMS
16 3 (0.66%) Windows 2000
Processes & Methodologies
1 195 (42.67%) DevOps
2 159 (34.79%) Continuous Integration
3 150 (32.82%) Agile Software Development
4 92 (20.13%) Configuration Management
5 61 (13.35%) Scrum
6 52 (11.38%) Open Source
7 51 (11.16%) Load Balancing
7 51 (11.16%) ITIL
8 35 (7.66%) Workflow
9 34 (7.44%) Build Automation
10 32 (7.00%) Service Management
11 30 (6.56%) Automated Testing
11 30 (6.56%) TDD
12 27 (5.91%) Mentoring
12 27 (5.91%) Software Engineering
13 26 (5.69%) Continuous Delivery
14 24 (5.25%) Microservices
15 21 (4.60%) Change Management
16 20 (4.38%) Capacity Planning
16 20 (4.38%) E-Commerce
Programming Languages
1 160 (35.01%) Python
2 158 (34.57%) Bash Shell
3 136 (29.76%) Java
4 116 (25.38%) PHP
5 114 (24.95%) Ruby
6 105 (22.98%) Perl
7 63 (13.79%) JavaScript
8 61 (13.35%) SQL
9 47 (10.28%) Shell Script
10 13 (2.84%) Groovy
11 12 (2.63%) Korn
11 12 (2.63%) Scala
12 9 (1.97%) C++
13 7 (1.53%) C
13 7 (1.53%) C#
14 6 (1.31%) Go
15 4 (0.88%) PHP5
16 3 (0.66%) PowerShell
17 2 (0.44%) sed
18 1 (0.22%) PL/SQL
Qualifications
1 77 (16.85%) Security Cleared
2 50 (10.94%) SC Cleared
3 22 (4.81%) Cisco Certification
3 22 (4.81%) CCNA
4 12 (2.63%) DV Cleared
4 12 (2.63%) Degree
5 9 (1.97%) RHCE
6 8 (1.75%) RHCT
7 3 (0.66%) CCNP
7 3 (0.66%) JNCIA
7 3 (0.66%) JNCIS
8 2 (0.44%) CTC Cleared
8 2 (0.44%) MCSE
8 2 (0.44%) Microsoft Certification
9 1 (0.22%) BC Cleared
Quality Assurance & Compliance
1 32 (7.00%) QA
2 6 (1.31%) SLA
3 5 (1.09%) WAI
4 3 (0.66%) PCI DSS
5 1 (0.22%) ISO 9001
5 1 (0.22%) ISO/IEC 27001
System Software
1 67 (14.66%) VMware Infrastructure
2 48 (10.50%) Active Directory
2 48 (10.50%) Docker
3 37 (8.10%) vCloud
4 28 (6.13%) Postfix
4 28 (6.13%) iptables
5 21 (4.60%) Samba
6 17 (3.72%) Hyper-V
7 16 (3.50%) vSphere
8 15 (3.28%) XenServer
9 14 (3.06%) NFS
10 11 (2.41%) Firmware
11 8 (1.75%) VMware ESXi
12 7 (1.53%) Varnish
12 7 (1.53%) VMware Server
13 6 (1.31%) Terminal Services
14 5 (1.09%) qmail
14 5 (1.09%) Xen
14 5 (1.09%) Squid
15 4 (0.88%) SpamAssassin
Systems Management
1 230 (50.33%) Puppet
2 128 (28.01%) Opscode Chef
3 75 (16.41%) ZABBIX
4 70 (15.32%) Ansible
5 68 (14.88%) Nagios
6 61 (13.35%) Salt
7 31 (6.78%) Graphite
7 31 (6.78%) Vagrant
8 27 (5.91%) Rundeck
9 24 (5.25%) Kibana
9 24 (5.25%) HAProxy
10 21 (4.60%) logstash
11 20 (4.38%) Cobbler
12 16 (3.50%) Cacti
13 12 (2.63%) SELinux
14 9 (1.97%) FortiGate
14 9 (1.97%) yum
15 7 (1.53%) OVSD
16 6 (1.31%) Zenoss
16 6 (1.31%) Graylog
Vendors
1 215 (47.05%) Red Hat
2 138 (30.20%) VMware
3 60 (13.13%) Splunk
4 52 (11.38%) Cisco
5 41 (8.97%) Microsoft
6 38 (8.32%) Oracle
7 25 (5.47%) Zend
8 22 (4.81%) Citrix
9 20 (4.38%) NetApp
10 19 (4.16%) HP
11 16 (3.50%) Google
12 14 (3.06%) Rackspace
13 11 (2.41%) Perforce
14 10 (2.19%) Dell
15 9 (1.97%) Percona
16 8 (1.75%) F5
17 7 (1.53%) EMC
18 6 (1.31%) AppDynamics
18 6 (1.31%) New Relic
19 5 (1.09%) Twitter
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