The table below looks at the statistics for CentOS skills in IT contracts advertised for the London region. Included is a guide to the average contractor rates offered in IT contracts that have cited CentOS over the 3 months to 5 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
5 May 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 308 362 335
Rank change year-on-year
+54 -27
Contract jobs citing CentOS 92 53 53
As % of all contract IT jobs located in London 0.41% 0.23% 0.24%
As % of the Operating Systems category 1.91% 1.07% 1.18%
Number of daily rates quoted 62 40 39
Average daily rate
Keep up to 90%
of your Daily Rate
Get a Free Illustration
£450 £438 £350
Average daily rate % change year-on-year
+2.85% +25.00%
90% offered a daily rate of more than £326 £300 £125
10% offered a daily rate of more than £534 £525 £468
UK excluding London average daily rate £375 £375 £300
% change year-on-year
- +25.00%
Number of hourly rates quoted 0 0 1
Average hourly rate - - £35.00
UK excluding London average hourly rate - £35.00 £34.00
% change year-on-year
- +2.94%
CentOS
England

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

Operating Systems Category
London
Contract IT job ads with a match in the
Operating Systems category
4813 4950 4479
As % of all contract IT jobs located in London 21.41% 21.21% 20.70%
Number of daily rates quoted 3203 3379 2952
Average daily rate £400 £400 £400
90% offered a daily rate of more than £183 £190 £225
10% offered a daily rate of more than £550 £575 £550
UK excluding London average daily rate £349 £315 £325
% change year-on-year
+10.79% -3.07%
Number of hourly rates quoted 189 238 233
Average hourly rate £18.00 £17.50 £19.00
Average hourly rate % change year-on-year
+2.85% -7.89%
90% offered a hourly rate of more than £13.09 £12.00 £13.00
10% offered a hourly rate of more than £31.50 £27.50 £135.00
UK excluding London average hourly rate £15.75 £15.88 £16.00
% change year-on-year
-0.78% -0.78%

CentOS
Jobs Demand Trend in London

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

CentOS Jobs Demand Trend in London

CentOS
Daily Rate Trend in London

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

CentOS Daily Rate Trend in London

CentOS
Daily Rate Histogram in London

This chart provides a histogram of daily rates quoted in contract IT jobs citing CentOS across the London region over the 3 months to 5 May 2015.

CentOS Daily Rate Histogram in London

CentOS
Hourly Rate Trend in London

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

CentOS Hourly Rate Trend in London

CentOS
Contract Job Locations in London

The table below looks at the demand and provides a guide to the average contractor rates quoted in IT jobs citing CentOS within the London region over the 3 months to 5 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
City of London +11 9 £363 -17.14% 11
Croydon - 4 £444 -
Ealing - 1 £425 -
CentOS
England

CentOS
Top 30 Related IT Skills in London

For the 6 months to 5 May 2015, IT contractor jobs across the London 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.

1 216 (92.31%) Linux
2 163 (69.66%) Puppet
3 148 (63.25%) DevOps
4 132 (56.41%) Jenkins
5 127 (54.27%) Red Hat
6 123 (52.56%) Bash Shell
7 116 (49.57%) Ubuntu
8 106 (45.30%) Ruby
8 106 (45.30%) Python
9 102 (43.59%) Continuous Integration
10 100 (42.74%) Git (software)
10 100 (42.74%) Agile Software Development
11 94 (40.17%) Opscode Chef
12 90 (38.46%) VMware
12 90 (38.46%) MySQL
13 84 (35.90%) Java
13 84 (35.90%) Perl
14 79 (33.76%) Apache
15 78 (33.33%) Amazon AWS
16 77 (32.91%) Red Hat Enterprise Linux
17 75 (32.05%) MongoDB
18 70 (29.91%) Maven
19 63 (26.92%) Ansible
20 62 (26.50%) Web Services
21 60 (25.64%) NoSQL
22 57 (24.36%) ZABBIX
23 56 (23.93%) Windows
23 56 (23.93%) Nagios
23 56 (23.93%) Scrum
24 54 (23.08%) PHP

CentOS
Top Related IT Skills in London by Category

For the 6 months to 5 May 2015, IT contractor jobs across the London 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 79 (33.76%) Apache
2 41 (17.52%) OpenStack
3 28 (11.97%) Tomcat
3 28 (11.97%) nginx
4 25 (10.68%) Node.js
5 24 (10.26%) IIS
5 24 (10.26%) JBoss
6 16 (6.84%) Confluence
6 16 (6.84%) Cloud Foundry
7 14 (5.98%) Elasticsearch
8 12 (5.13%) Mule ESB
9 7 (2.99%) WildFly
9 7 (2.99%) Alfresco
10 6 (2.56%) Moodle
11 5 (2.14%) MediaWiki
12 3 (1.28%) Mule
12 3 (1.28%) GlassFish
12 3 (1.28%) Jetty
12 3 (1.28%) WebLogic
13 2 (0.85%) SharePoint
Applications
1 16 (6.84%) MS Excel
2 1 (0.43%) Photoshop
2 1 (0.43%) MS Office
Business Applications
1 4 (1.71%) ResourceLink
2 2 (0.85%) Oracle BPM
2 2 (0.85%) Agresso
Cloud Services
1 78 (33.33%) Amazon AWS
2 36 (15.38%) PaaS
3 16 (6.84%) Heroku
3 16 (6.84%) Engine Yard
4 12 (5.13%) Amazon S3
5 11 (4.70%) Amazon EC2
6 10 (4.27%) Google Cloud Platform
7 7 (2.99%) GitHub
8 3 (1.28%) IaaS
8 3 (1.28%) Amazon ELB
9 2 (0.85%) OpenShift
9 2 (0.85%) Rackspace Cloud
9 2 (0.85%) Route 53
10 1 (0.43%) Cloud Computing
10 1 (0.43%) Microsoft Azure
10 1 (0.43%) SaaS
Communications & Networking
1 45 (19.23%) Firewall
2 36 (15.38%) DNS
3 35 (14.96%) TCP/IP
4 23 (9.83%) VPN
5 20 (8.55%) VLAN
6 16 (6.84%) LAN
7 15 (6.41%) LDAP
7 15 (6.41%) HTTP
7 15 (6.41%) SSL
8 10 (4.27%) WAN
9 9 (3.85%) iSCSI
10 8 (3.42%) Reverse Proxy
10 8 (3.42%) SAN
10 8 (3.42%) DMZ
10 8 (3.42%) Internet
11 7 (2.99%) Network Security
12 6 (2.56%) IPv6
12 6 (2.56%) IPsec
13 5 (2.14%) OSPF
13 5 (2.14%) BGP
Database & Business Intelligence
1 90 (38.46%) MySQL
2 75 (32.05%) MongoDB
3 60 (25.64%) NoSQL
4 44 (18.80%) Apache Cassandra
5 34 (14.53%) PostgreSQL
6 24 (10.26%) Hadoop
7 23 (9.83%) Redis
7 23 (9.83%) Relational Database
8 21 (8.97%) RDBMS
9 20 (8.55%) SQL Server
10 12 (5.13%) SQL Server 2012
11 11 (4.70%) Big Data
11 11 (4.70%) Riak
12 9 (3.85%) CouchDB
13 8 (3.42%) MariaDB
14 3 (1.28%) SQL Server Reporting Services
14 3 (1.28%) SQL Server Integration Services
15 2 (0.85%) SQL Server 2008
15 2 (0.85%) Apache Hive
15 2 (0.85%) DB2
Development Applications
1 132 (56.41%) Jenkins
2 100 (42.74%) Git (software)
3 70 (29.91%) Maven
4 42 (17.95%) Subversion
5 27 (11.54%) Artifactory
6 23 (9.83%) SonarQube
7 20 (8.55%) JIRA
8 19 (8.12%) Hudson
9 13 (5.56%) Gradle
9 13 (5.56%) Selenium
10 12 (5.13%) Gerrit
11 10 (4.27%) Mercurial
12 9 (3.85%) JMeter
13 4 (1.71%) Ant
13 4 (1.71%) Atlassian Bamboo
13 4 (1.71%) Grunt
14 3 (1.28%) webpack
14 3 (1.28%) PHPUnit
15 2 (0.85%) Mocha
15 2 (0.85%) MSI
General
1 8 (3.42%) Games
2 5 (2.14%) Finance
3 4 (1.71%) Telecoms
4 3 (1.28%) Advertising
5 1 (0.43%) Manufacturing
5 1 (0.43%) Banking
5 1 (0.43%) Marketing
Job Titles
1 90 (38.46%) DevOps Engineer
2 57 (24.36%) Senior DevOps Engineer
3 27 (11.54%) Linux DevOps Engineer
4 24 (10.26%) Administrator
5 22 (9.40%) Developer
5 22 (9.40%) Linux Engineer
6 19 (8.12%) Systems Administrator
7 12 (5.13%) Architect
8 11 (4.70%) DevOps Specialist
9 8 (3.42%) PHP Developer
9 8 (3.42%) Linux Administrator
10 7 (2.99%) Systems Engineer
10 7 (2.99%) DevOps Architect
11 6 (2.56%) Moodle Developer
11 6 (2.56%) Analyst
12 5 (2.14%) Infrastructure Engineer
13 4 (1.71%) Applications Support
13 4 (1.71%) Linux Systems Administrator
13 4 (1.71%) Deployment Engineer
14 3 (1.28%) Linux Systems Engineer
Libraries, Frameworks & Software Standards
1 62 (26.50%) Web Services
2 32 (13.68%) LAMP
3 29 (12.39%) MCollective
4 21 (8.97%) HTML
5 20 (8.55%) CSS
5 20 (8.55%) HTML5
6 19 (8.12%) RabbitMQ
7 18 (7.69%) jQuery
8 13 (5.56%) JSON
9 12 (5.13%) J2EE
9 12 (5.13%) REST
10 11 (4.70%) CSS3
11 10 (4.27%) .NET
11 10 (4.27%) Spring
12 9 (3.85%) Twitter Bootstrap
13 8 (3.42%) AngularJS
14 7 (2.99%) RESTful
15 6 (2.56%) Backbone.js
15 6 (2.56%) Hibernate
15 6 (2.56%) XML
Miscellaneous
1 42 (17.95%) Open Source
2 26 (11.11%) Clustering
3 21 (8.97%) Device Driver
4 16 (6.84%) Hybrid Cloud
5 13 (5.56%) Computer Science
6 10 (4.27%) Analytical Skills
7 7 (2.99%) User Experience
8 6 (2.56%) W3C
9 5 (2.14%) Wiki
9 5 (2.14%) Online Games
10 4 (1.71%) Client/Server
10 4 (1.71%) Fat Client
10 4 (1.71%) Thin Client
10 4 (1.71%) Digital Media
11 3 (1.28%) Enterprise Software
11 3 (1.28%) Private Cloud
11 3 (1.28%) E-Learning
11 3 (1.28%) IPTV
12 2 (0.85%) VLE
12 2 (0.85%) Interactive TV
Operating Systems
1 216 (92.31%) Linux
2 116 (49.57%) Ubuntu
3 77 (32.91%) Red Hat Enterprise Linux
4 56 (23.93%) Windows
5 26 (11.11%) UNIX
6 19 (8.12%) Windows Server 2012
7 18 (7.69%) Debian
8 14 (5.98%) Windows Server 2008
9 10 (4.27%) Windows 7
9 10 (4.27%) Fedora
10 7 (2.99%) Windows Server 2003
10 7 (2.99%) SUSE
11 6 (2.56%) HPUX
12 5 (2.14%) Windows 8
13 4 (1.71%) Solaris
14 3 (1.28%) VMS
14 3 (1.28%) Android
15 2 (0.85%) Mac OS X
15 2 (0.85%) CoreOS
16 1 (0.43%) Amazon Linux
Processes & Methodologies
1 148 (63.25%) DevOps
2 102 (43.59%) Continuous Integration
3 100 (42.74%) Agile Software Development
4 56 (23.93%) Scrum
5 48 (20.51%) Load Balancing
5 48 (20.51%) Configuration Management
6 31 (13.25%) Build Automation
7 26 (11.11%) Change Management
8 21 (8.97%) Service Delivery
8 21 (8.97%) Release Management
9 20 (8.55%) Automated Testing
10 18 (7.69%) Kanban
10 18 (7.69%) OWASP
10 18 (7.69%) Continuous Delivery
11 13 (5.56%) Capacity Planning
12 12 (5.13%) BDD
12 12 (5.13%) SOA
13 11 (4.70%) TDD
14 9 (3.85%) ITIL
14 9 (3.85%) Root Cause Analysis
Programming Languages
1 123 (52.56%) Bash Shell
2 106 (45.30%) Ruby
2 106 (45.30%) Python
3 84 (35.90%) Java
3 84 (35.90%) Perl
4 54 (23.08%) PHP
5 43 (18.38%) Shell Script
6 30 (12.82%) SQL
7 27 (11.54%) JavaScript
8 19 (8.12%) Korn
9 10 (4.27%) Scala
10 7 (2.99%) Go
11 4 (1.71%) PowerShell
12 2 (0.85%) sed
12 2 (0.85%) PHP5
12 2 (0.85%) C
13 1 (0.43%) PL/SQL
13 1 (0.43%) Groovy
Qualifications
1 45 (19.23%) Security Cleared
2 30 (12.82%) SC Cleared
3 8 (3.42%) Cisco Certification
4 7 (2.99%) CCNA
5 5 (2.14%) Degree
5 5 (2.14%) DV Cleared
6 4 (1.71%) CCNP
7 3 (1.28%) JNCIA
7 3 (1.28%) JNCIS
8 1 (0.43%) MCSE
8 1 (0.43%) Microsoft Certification
8 1 (0.43%) RHCE
8 1 (0.43%) BC Cleared
Quality Assurance & Compliance
1 26 (11.11%) QA
2 4 (1.71%) WAI
3 2 (0.85%) SLA
3 2 (0.85%) PCI DSS
System Software
1 37 (15.81%) VMware Infrastructure
2 33 (14.10%) vCloud
3 21 (8.97%) Docker
4 18 (7.69%) Active Directory
5 10 (4.27%) vSphere
6 9 (3.85%) NFS
7 8 (3.42%) VMware ESXi
8 6 (2.56%) Terminal Services
8 6 (2.56%) Samba
8 6 (2.56%) iptables
9 5 (2.14%) Hyper-V
9 5 (2.14%) Postfix
9 5 (2.14%) XenApp
9 5 (2.14%) XenServer
9 5 (2.14%) XenDesktop
9 5 (2.14%) Xen
10 4 (1.71%) Varnish
11 3 (1.28%) Squid
12 2 (0.85%) VirtualBox
12 2 (0.85%) Apache Flume
Systems Management
1 163 (69.66%) Puppet
2 94 (40.17%) Opscode Chef
3 63 (26.92%) Ansible
4 57 (24.36%) ZABBIX
5 56 (23.93%) Nagios
6 32 (13.68%) Cobbler
7 30 (12.82%) Salt
8 21 (8.97%) Kibana
9 17 (7.26%) Cacti
10 13 (5.56%) collectd
10 13 (5.56%) logstash
11 11 (4.70%) HAProxy
12 10 (4.27%) Graphite
13 9 (3.85%) Graylog
13 9 (3.85%) Zenoss
14 8 (3.42%) Red Hat Spacewalk
15 7 (2.99%) Vagrant
16 4 (1.71%) yum
17 2 (0.85%) Oozie
17 2 (0.85%) Hadoop YARN
Vendors
1 127 (54.27%) Red Hat
2 90 (38.46%) VMware
3 33 (14.10%) Oracle
4 25 (10.68%) Microsoft
5 17 (7.26%) Rackspace
6 15 (6.41%) Cisco
7 14 (5.98%) Citrix
7 14 (5.98%) Perforce
8 12 (5.13%) Splunk
9 10 (4.27%) Google
10 8 (3.42%) Percona
11 6 (2.56%) New Relic
11 6 (2.56%) AppDynamics
11 6 (2.56%) HP
12 5 (2.14%) Dell
12 5 (2.14%) Brocade
13 4 (1.71%) IBM
13 4 (1.71%) SaltStack
13 4 (1.71%) Cognos
13 4 (1.71%) Akamai
City of London
Explore Group
Posted: 3 hours ago
City, London
Harrington Starr
Rate: £550 per day
Posted: 3 days ago
London
NSK International Consultants Ltd
Rate: Up to £420 per day
Posted: 4 days ago
Central London / West End
Digitech Resourcing Ltd
Rate: Up to £550 per day
Posted: 5 days ago
City, London
Arrows Group
Rate: £350 - £375 per day
Posted: 6 days ago
London
Computer Futures
Rate: competitive
Posted: 25 days ago