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 30 January 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
30 Jan 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 254 334 291
Rank change year-on-year
+80 -43
Contract jobs citing CentOS 146 59 72
As % of all contract IT jobs located in London 0.69% 0.27% 0.37%
As % of the Operating Systems category 3.01% 1.25% 1.64%
Number of daily rates quoted 103 40 41
Average daily rate
Keep up to 90%
of your Daily Rate
Get a Free Illustration
£450 £413 £400
Average daily rate % change year-on-year
+9.09% +3.12%
90% offered a daily rate of more than £400 £309 £250
10% offered a daily rate of more than £575 £465 £475
UK excluding London average daily rate £350 £400 £325
% change year-on-year
-12.50% +23.07%
Number of hourly rates quoted 0 0 1
Average hourly rate - - £38.50
UK excluding London average hourly rate £47.50 £23.75 £32.50
% change year-on-year
+100.00% -26.92%
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
4853 4731 4402
As % of all contract IT jobs located in London 22.97% 21.95% 22.77%
Number of daily rates quoted 3350 3140 2778
Average daily rate £413 £400 £390
Average daily rate % change year-on-year
+3.12% +2.56%
90% offered a daily rate of more than £190 £200 £213
10% offered a daily rate of more than £550 £550 £550
UK excluding London average daily rate £338 £307 £325
% change year-on-year
+9.93% -5.53%
Number of hourly rates quoted 147 209 283
Average hourly rate £17.25 £17.50 £18.60
Average hourly rate % change year-on-year
-1.42% -5.91%
90% offered a hourly rate of more than £12.50 £12.50 £12.00
10% offered a hourly rate of more than £37.50 £35.00 £40.10
UK excluding London average hourly rate £15.50 £15.00 £17.00
% change year-on-year
+3.33% -11.76%

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 30 January 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 30 January 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 +7 15 £475 +11.76% 16
Croydon - 1 £400 -
Isleworth - - - - 1
Twickenham - - - -
Uxbridge - - - - 1
Hammersmith - - - -
Bromley - - - - 1
CentOS
England

CentOS
Top 30 Related IT Skills in London

For the 6 months to 30 January 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.

1 277 (93.27%) Linux
2 209 (70.37%) DevOps
3 204 (68.69%) Puppet
4 153 (51.52%) Jenkins
5 143 (48.15%) Ubuntu
6 142 (47.81%) Opscode Chef
7 136 (45.79%) Ruby
8 135 (45.45%) Red Hat
9 133 (44.78%) Git (software)
10 132 (44.44%) Bash Shell
10 132 (44.44%) Agile Software Development
11 125 (42.09%) Red Hat Enterprise Linux
12 122 (41.08%) Python
13 121 (40.74%) Continuous Integration
14 115 (38.72%) Java
15 100 (33.67%) MySQL
15 100 (33.67%) Apache
16 96 (32.32%) Maven
17 87 (29.29%) PHP
18 84 (28.28%) VMware
19 81 (27.27%) Perl
20 80 (26.94%) MongoDB
21 77 (25.93%) Web Services
21 77 (25.93%) Nagios
22 75 (25.25%) Configuration Management
23 73 (24.58%) Open Source
24 72 (24.24%) Amazon AWS
25 67 (22.56%) Scrum
26 66 (22.22%) NoSQL
27 64 (21.55%) ZABBIX

CentOS
Top Related IT Skills in London by Category

For the 6 months to 30 January 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
1 100 (33.67%) Apache
2 51 (17.17%) OpenStack
3 35 (11.78%) nginx
4 22 (7.41%) Node.js
5 20 (6.73%) Elasticsearch
6 18 (6.06%) Tomcat
7 14 (4.71%) IIS
8 12 (4.04%) JBoss
8 12 (4.04%) Cloud Foundry
9 9 (3.03%) Confluence
10 6 (2.02%) Moodle
11 5 (1.68%) MediaWiki
12 2 (0.67%) MS Exchange
12 2 (0.67%) SharePoint
12 2 (0.67%) WordPress
12 2 (0.67%) Drupal
13 1 (0.34%) Oracle SOA Suite
13 1 (0.34%) Apache Solr
13 1 (0.34%) WildFly
13 1 (0.34%) CMS
Applications
1 27 (9.09%) MS Excel
2 4 (1.35%) MS Office
Business Applications
1 3 (1.01%) ResourceLink
2 2 (0.67%) Agresso
3 1 (0.34%) Magento
3 1 (0.34%) Oracle BPM
Cloud Services
1 72 (24.24%) Amazon AWS
2 45 (15.15%) PaaS
3 26 (8.75%) Amazon S3
4 22 (7.41%) Amazon EC2
5 12 (4.04%) Heroku
5 12 (4.04%) Engine Yard
6 6 (2.02%) Amazon ELB
6 6 (2.02%) GitHub
7 4 (1.35%) Google Cloud Platform
7 4 (1.35%) SaaS
8 3 (1.01%) Route 53
9 2 (0.67%) Cloud Computing
9 2 (0.67%) Google Apps
10 1 (0.34%) Joyent
10 1 (0.34%) Microsoft Azure
Communications & Networking
1 34 (11.45%) Firewall
2 33 (11.11%) DNS
3 30 (10.10%) TCP/IP
4 18 (6.06%) Internet
5 17 (5.72%) VPN
5 17 (5.72%) VLAN
6 15 (5.05%) HTTP
7 13 (4.38%) SSL
8 12 (4.04%) WAN
9 11 (3.70%) LAN
10 9 (3.03%) Fibre Channel
10 9 (3.03%) iSCSI
11 8 (2.69%) SAN
11 8 (2.69%) LDAP
12 6 (2.02%) IPv6
12 6 (2.02%) BGP
12 6 (2.02%) Wi-Fi
12 6 (2.02%) IPsec
13 5 (1.68%) Network Security
13 5 (1.68%) EIGRP
Database & Business Intelligence
1 100 (33.67%) MySQL
2 80 (26.94%) MongoDB
3 66 (22.22%) NoSQL
4 55 (18.52%) Apache Cassandra
5 33 (11.11%) PostgreSQL
6 26 (8.75%) Hadoop
7 25 (8.42%) SQL Server
8 21 (7.07%) Big Data
9 19 (6.40%) Relational Database
9 19 (6.40%) Redis
10 18 (6.06%) CouchDB
11 17 (5.72%) Riak
12 16 (5.39%) RDBMS
13 13 (4.38%) SQL Server 2012
14 6 (2.02%) MariaDB
15 5 (1.68%) Couchbase
16 3 (1.01%) Amazon RDS
16 3 (1.01%) SQL Server 2008
17 1 (0.34%) Pentaho
17 1 (0.34%) Oracle Database
Development Applications
1 153 (51.52%) Jenkins
2 133 (44.78%) Git (software)
3 96 (32.32%) Maven
4 35 (11.78%) Subversion
5 25 (8.42%) Hudson
6 14 (4.71%) Artifactory
7 11 (3.70%) JIRA
8 9 (3.03%) Selenium
9 8 (2.69%) PHPUnit
10 7 (2.36%) Gerrit
11 6 (2.02%) Atlassian Bamboo
11 6 (2.02%) Cucumber
11 6 (2.02%) Mercurial
11 6 (2.02%) Gradle
12 5 (1.68%) JUnit
13 4 (1.35%) JMeter
13 4 (1.35%) Grunt
13 4 (1.35%) Behat
14 3 (1.01%) Liquibase
14 3 (1.01%) MSI
General
1 8 (2.69%) Games
2 7 (2.36%) Finance
3 5 (1.68%) Publishing
4 3 (1.01%) Banking
5 2 (0.67%) Retail
6 1 (0.34%) Legal
6 1 (0.34%) Manufacturing
6 1 (0.34%) Billing
Job Titles
1 119 (40.07%) DevOps Engineer
2 64 (21.55%) Senior DevOps Engineer
3 43 (14.48%) Developer
4 39 (13.13%) Linux DevOps Engineer
5 28 (9.43%) Administrator
6 24 (8.08%) Systems Administrator
7 19 (6.40%) Architect
8 16 (5.39%) Linux Administrator
8 16 (5.39%) PHP Developer
9 15 (5.05%) DevOps Architect
9 15 (5.05%) Linux Engineer
10 13 (4.38%) Senior Developer
11 11 (3.70%) Linux Systems Administrator
12 10 (3.37%) Java Developer
12 10 (3.37%) Operations Engineer
12 10 (3.37%) Senior Operations Engineer
12 10 (3.37%) DevOps Specialist
13 9 (3.03%) DevOps Administrator
13 9 (3.03%) Systems Engineer
14 7 (2.36%) Infrastructure Engineer
Libraries, Frameworks & Software Standards
1 77 (25.93%) Web Services
2 51 (17.17%) LAMP
3 36 (12.12%) MCollective
4 25 (8.42%) HTML
5 21 (7.07%) HTML5
5 21 (7.07%) CSS
5 21 (7.07%) jQuery
6 12 (4.04%) JSON
6 12 (4.04%) RESTful
7 11 (3.70%) .NET
8 10 (3.37%) RabbitMQ
9 9 (3.03%) REST
10 8 (2.69%) AngularJS
11 7 (2.36%) Play Framework
11 7 (2.36%) Spring
12 6 (2.02%) J2EE
12 6 (2.02%) SOAP
12 6 (2.02%) Zend Framework
12 6 (2.02%) CSS3
13 5 (1.68%) Backbone.js
Miscellaneous
1 73 (24.58%) Open Source
2 23 (7.74%) Clustering
2 23 (7.74%) Computer Science
3 16 (5.39%) Device Driver
4 12 (4.04%) Replication
5 7 (2.36%) Data Structures
6 6 (2.02%) Wiki
7 5 (1.68%) Online Games
8 4 (1.35%) W3C
8 4 (1.35%) Analytical Skills
8 4 (1.35%) Enterprise Software
8 4 (1.35%) Digital Media
9 3 (1.01%) Mobile App
9 3 (1.01%) User Experience
9 3 (1.01%) E-Learning
9 3 (1.01%) Interactive TV
9 3 (1.01%) VLE
9 3 (1.01%) Client/Server
10 2 (0.67%) Management Information System
10 2 (0.67%) Algorithms
Operating Systems
1 277 (93.27%) Linux
2 143 (48.15%) Ubuntu
3 125 (42.09%) Red Hat Enterprise Linux
4 47 (15.82%) Windows
5 32 (10.77%) Debian
6 30 (10.10%) UNIX
7 19 (6.40%) Windows Server 2008
8 12 (4.04%) Windows Server 2012
9 9 (3.03%) Windows Server 2003
10 6 (2.02%) VMS
10 6 (2.02%) SUSE
11 5 (1.68%) Windows 7
12 3 (1.01%) Fedora
12 3 (1.01%) Solaris
13 2 (0.67%) Windows XP
13 2 (0.67%) Mac OS X
13 2 (0.67%) CoreOS
13 2 (0.67%) SUSE Linux Enterprise Server
13 2 (0.67%) Windows 8
14 1 (0.34%) Apple iOS
Processes & Methodologies
1 209 (70.37%) DevOps
2 132 (44.44%) Agile Software Development
3 121 (40.74%) Continuous Integration
4 75 (25.25%) Configuration Management
5 67 (22.56%) Scrum
6 64 (21.55%) Load Balancing
7 46 (15.49%) Build Automation
8 34 (11.45%) Kanban
9 31 (10.44%) Automated Testing
10 30 (10.10%) Change Management
11 29 (9.76%) Service Delivery
12 19 (6.40%) BDD
12 19 (6.40%) Release Management
13 17 (5.72%) OO
14 16 (5.39%) ITIL
15 15 (5.05%) TDD
16 13 (4.38%) Capacity Planning
17 12 (4.04%) SOA
18 11 (3.70%) OWASP
19 10 (3.37%) Performance Tuning
Programming Languages
1 136 (45.79%) Ruby
2 132 (44.44%) Bash Shell
3 122 (41.08%) Python
4 115 (38.72%) Java
5 87 (29.29%) PHP
6 81 (27.27%) Perl
7 38 (12.79%) JavaScript
8 30 (10.10%) Shell Script
9 20 (6.73%) SQL
10 15 (5.05%) Korn
11 10 (3.37%) Scala
12 5 (1.68%) Golang
13 4 (1.35%) PHP5
13 4 (1.35%) PowerShell
14 3 (1.01%) sed
14 3 (1.01%) Groovy
14 3 (1.01%) T-SQL
15 2 (0.67%) TypeScript
16 1 (0.34%) WebLogic Scripting Tool
16 1 (0.34%) C-shell
Qualifications
1 52 (17.51%) Security Cleared
2 43 (14.48%) SC Cleared
3 4 (1.35%) Cisco Certification
4 3 (1.01%) CCNA
5 2 (0.67%) Degree
6 1 (0.34%) BC Cleared
6 1 (0.34%) DV Cleared
6 1 (0.34%) RHCT
6 1 (0.34%) LPIC
6 1 (0.34%) RHCE
6 1 (0.34%) CCNP
Quality Assurance & Compliance
1 21 (7.07%) QA
2 7 (2.36%) SLA
3 3 (1.01%) PCI DSS
System Software
1 42 (14.14%) VMware Infrastructure
2 38 (12.79%) vCloud
3 12 (4.04%) vSphere
4 10 (3.37%) XenServer
4 10 (3.37%) Docker
5 9 (3.03%) Active Directory
6 8 (2.69%) Xen
7 7 (2.36%) Varnish
7 7 (2.36%) Hyper-V
7 7 (2.36%) NFS
8 6 (2.02%) Samba
8 6 (2.02%) XenApp
8 6 (2.02%) VMware ESXi
9 5 (1.68%) XenDesktop
9 5 (1.68%) Postfix
10 3 (1.01%) Terminal Services
11 2 (0.67%) VMware ESX
11 2 (0.67%) Ceph
11 2 (0.67%) KVM
12 1 (0.34%) VirtualBox
Systems Management
1 204 (68.69%) Puppet
2 142 (47.81%) Opscode Chef
3 77 (25.93%) Nagios
4 64 (21.55%) ZABBIX
5 55 (18.52%) Ansible
6 34 (11.45%) Cacti
7 28 (9.43%) Cobbler
8 27 (9.09%) Salt
9 22 (7.41%) Kibana
10 19 (6.40%) Graphite
11 17 (5.72%) Zenoss
12 16 (5.39%) Graylog2
13 12 (4.04%) Red Hat Spacewalk
13 12 (4.04%) Vagrant
14 10 (3.37%) collectd
15 9 (3.03%) logstash
15 9 (3.03%) HAProxy
16 6 (2.02%) Capistrano
17 2 (0.67%) Tivoli Storage Manager
18 1 (0.34%) FortiGate
Vendors
1 135 (45.45%) Red Hat
2 84 (28.28%) VMware
3 35 (11.78%) Microsoft
4 24 (8.08%) Perforce
5 22 (7.41%) Oracle
5 22 (7.41%) Rackspace
6 18 (6.06%) Splunk
7 17 (5.72%) Percona
8 12 (4.04%) Citrix
8 12 (4.04%) Cisco
9 10 (3.37%) New Relic
10 9 (3.03%) AppDynamics
11 8 (2.69%) EMC
11 8 (2.69%) Google
12 7 (2.36%) IBM
13 6 (2.02%) Zend
14 4 (1.35%) F5
15 3 (1.01%) Vyatta
15 3 (1.01%) Scality
15 3 (1.01%) Brocade
London
TEKsystems
Rate: £450 - £525 per day
Posted: 15 hours ago
City, London
Oscar Associates (UK) Ltd
Rate: £250 - £350 per day
Posted: 15 hours ago
London
Spargonet Consulting Plc
Rate: £400 - £500 per day
Posted: 2 days ago
London
Spargonet Consulting Plc
Rate: £400 - £500 per day
Posted: 2 days ago
London
TRG
Rate: 350-420 Per Day call for details
Posted: 7 days ago