The first table below looks at the demand 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 17 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 for the London region.

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
17 Apr 2014
Same period 2013 Same period 2012
CentOS Linux
Rank 346 319 369
Rank change year-on-year
-27 +50
Contract jobs citing CentOS 66 59 60
As % of all contract IT jobs located in London 0.27% 0.27% 0.21%
As % of the Operating Systems category 1.32% 1.33% 1.10%
Number of daily rates quoted 43 44 39
Average daily rate £438 £350 £338
Average daily rate % change year-on-year
+25.00% +3.70%
90% offered a daily rate of more than £296 £125 £267
10% offered a daily rate of more than £525 £456 £450
UK excluding London average daily rate £350 £300 £450
% change year-on-year
+16.66% -33.33%
Number of hourly rates quoted 0 1 0
Average hourly rate - £35.00 -
UK excluding London average hourly rate £35.00 £34.00 -
% change year-on-year
+2.94% -
Operating Systems Category
London
Contract IT job ads with a match in the
Operating Systems category
5003 4425 5453
As % of all contract IT jobs located in London 20.66% 20.46% 19.47%
Number of daily rates quoted 3361 2865 3361
Average daily rate £400 £400 £400
90% offered a daily rate of more than £190 £220 £215
10% offered a daily rate of more than £575 £550 £550
UK excluding London average daily rate £320 £314 £325
% change year-on-year
+1.91% -3.38%
Number of hourly rates quoted 233 234 319
Average hourly rate £17.50 £19.00 £19.50
Average hourly rate % change year-on-year
-7.89% -2.56%
90% offered a hourly rate of more than £12.50 £12.50 £13.00
10% offered a hourly rate of more than £31.50 £135.00 £37.00
UK excluding London average hourly rate £16.00 £16.00 £17.00
% change year-on-year
- -5.88%
CentOS
England

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 17 April 2014.

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 17 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
City of London -9 12 £306 -7.27% 2
Canary Wharf - - - -
Hammersmith - - - -
Croydon - - - - 1
Ruislip - - - -
CentOS
England

CentOS
Top 30 Related IT Skills in London

For the 6 months to 17 April 2014, 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.

1 119 (89.47%) Linux
2 94 (70.68%) Red Hat
3 79 (59.40%) Puppet
4 63 (47.37%) Apache
5 60 (45.11%) Red Hat Enterprise Linux
5 60 (45.11%) Opscode Chef
6 57 (42.86%) MySQL
7 53 (39.85%) Python
8 52 (39.10%) Nagios
9 49 (36.84%) Perl
10 48 (36.09%) Bash Shell
11 47 (35.34%) Web Services
12 45 (33.83%) PHP
13 41 (30.83%) Amazon AWS
14 38 (28.57%) UNIX
14 38 (28.57%) LAMP
15 37 (27.82%) Ruby
16 36 (27.07%) MongoDB
17 34 (25.56%) VMware
18 29 (21.80%) Debian
18 29 (21.80%) Ubuntu
18 29 (21.80%) Continuous Integration
18 29 (21.80%) Windows
18 29 (21.80%) DNS
19 28 (21.05%) Java
19 28 (21.05%) VMware Infrastructure
19 28 (21.05%) Jenkins
20 26 (19.55%) ZABBIX
21 25 (18.80%) NoSQL
22 23 (17.29%) Apache Cassandra

CentOS
Top Related IT Skills in London by Category

For the 6 months to 17 April 2014, 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 63 (47.37%) Apache
2 23 (17.29%) Tomcat
2 23 (17.29%) nginx
3 14 (10.53%) Node.js
4 11 (8.27%) Elasticsearch
5 10 (7.52%) IIS
6 4 (3.01%) SharePoint 2010
6 4 (3.01%) Exchange Server 2010
6 4 (3.01%) SharePoint
6 4 (3.01%) MS Exchange
6 4 (3.01%) Office Communications Server
7 3 (2.26%) Moodle
8 2 (1.50%) WordPress
8 2 (1.50%) Drupal
8 2 (1.50%) OpenStack
9 1 (0.75%) Jetty
9 1 (0.75%) WebSphere Application Server
9 1 (0.75%) WebLogic
9 1 (0.75%) Commerce Server
9 1 (0.75%) WebSphere
Applications
1 1 (0.75%) MS Excel
1 1 (0.75%) MS Visio
Business Applications
1 1 (0.75%) Oracle 11i
Cloud Services
1 41 (30.83%) Amazon AWS
2 15 (11.28%) Amazon EC2
3 10 (7.52%) Cloud Computing
4 8 (6.02%) Amazon S3
5 2 (1.50%) GitHub
5 2 (1.50%) Rackspace Cloud
5 2 (1.50%) Joyent
6 1 (0.75%) Route 53
6 1 (0.75%) IaaS
6 1 (0.75%) Amazon ELB
Communications & Networking
1 29 (21.80%) DNS
2 22 (16.54%) HTTP
3 11 (8.27%) LDAP
3 11 (8.27%) SMTP
4 8 (6.02%) TCP/IP
5 7 (5.26%) SSH
5 7 (5.26%) Firewall
6 6 (4.51%) SSL
7 5 (3.76%) PPTP
7 5 (3.76%) VPN
7 5 (3.76%) SNMP
7 5 (3.76%) IPsec
8 4 (3.01%) Internet
9 3 (2.26%) DHCP
9 3 (2.26%) Network Security
10 2 (1.50%) VoIP
10 2 (1.50%) SAN
11 1 (0.75%) BIG-IP
11 1 (0.75%) VLAN
11 1 (0.75%) Cisco IOS
Database & Business Intelligence
1 57 (42.86%) MySQL
2 36 (27.07%) MongoDB
3 25 (18.80%) NoSQL
4 23 (17.29%) Apache Cassandra
5 17 (12.78%) CouchDB
6 15 (11.28%) Riak
7 12 (9.02%) Redis
7 12 (9.02%) Hadoop
8 11 (8.27%) Big Data
9 9 (6.77%) SQL Server
10 7 (5.26%) Oracle Database
11 6 (4.51%) Oracle Database 10g
11 6 (4.51%) PostgreSQL
12 5 (3.76%) Oracle Database 11g
13 3 (2.26%) Relational Database
14 2 (1.50%) Neo4j
14 2 (1.50%) SQL Server 2008
14 2 (1.50%) RavenDB
15 1 (0.75%) SQL Server Reporting Services
15 1 (0.75%) SQL Server 2005
Development Applications
1 28 (21.05%) Jenkins
2 18 (13.53%) Hudson
3 17 (12.78%) Git (software)
4 8 (6.02%) Subversion
5 4 (3.01%) Bitbucket
6 2 (1.50%) TeamCity
6 2 (1.50%) Maven
6 2 (1.50%) Visual Studio
6 2 (1.50%) NUnit
6 2 (1.50%) Mercurial
6 2 (1.50%) MSTest
6 2 (1.50%) PHPUnit
7 1 (0.75%) Mockito
7 1 (0.75%) Hamcrest
7 1 (0.75%) Cucumber
7 1 (0.75%) JIRA
7 1 (0.75%) Ant
General
1 16 (12.03%) Finance
2 9 (6.77%) Games
3 2 (1.50%) Banking
3 2 (1.50%) Advertising
3 2 (1.50%) Publishing
3 2 (1.50%) Marketing
4 1 (0.75%) Retail
4 1 (0.75%) Manufacturing
4 1 (0.75%) Back Office
4 1 (0.75%) Electronics
4 1 (0.75%) Telecoms
Job Titles
1 38 (28.57%) DevOps Engineer
2 29 (21.80%) Administrator
3 28 (21.05%) Systems Administrator
4 22 (16.54%) Linux Engineer
5 18 (13.53%) Linux Administrator
5 18 (13.53%) Linux Systems Administrator
6 13 (9.77%) Systems Engineer
7 9 (6.77%) Developer
8 7 (5.26%) UNIX Systems Administrator
9 6 (4.51%) UNIX Administrator
10 5 (3.76%) Consultant
10 5 (3.76%) Support Engineer
11 4 (3.01%) Graduate
12 3 (2.26%) Platform Engineer
12 3 (2.26%) Senior Linux Engineer
13 2 (1.50%) Senior Systems Administrator
13 2 (1.50%) Architect
13 2 (1.50%) Software Engineer
13 2 (1.50%) Senior Developer
13 2 (1.50%) C# Developer
Libraries, Frameworks & Software Standards
1 47 (35.34%) Web Services
2 38 (28.57%) LAMP
3 16 (12.03%) XML
4 13 (9.77%) HTML
5 10 (7.52%) JSON
6 8 (6.02%) RESTful
7 7 (5.26%) CSS
8 6 (4.51%) REST
8 6 (4.51%) CSS3
8 6 (4.51%) SOAP
8 6 (4.51%) JMX
8 6 (4.51%) HTML5
9 5 (3.76%) Ruby on Rails
10 4 (3.01%) Backbone.js
10 4 (3.01%) AngularJS
10 4 (3.01%) Semantic HTML
11 3 (2.26%) Software Packaging
11 3 (2.26%) JDBC
11 3 (2.26%) J2EE
12 2 (1.50%) ASP.NET
Miscellaneous
1 13 (9.77%) Replication
2 12 (9.02%) Clustering
3 11 (8.27%) Open Source
4 6 (4.51%) Online Games
4 6 (4.51%) Computer Science
5 4 (3.01%) Blackberry
6 2 (1.50%) Visualisation
6 2 (1.50%) Social Network
7 1 (0.75%) NHS
7 1 (0.75%) Enterprise Storage
7 1 (0.75%) Mobile App
7 1 (0.75%) Mobile Banking
7 1 (0.75%) Device Driver
7 1 (0.75%) Wiki
7 1 (0.75%) STB
7 1 (0.75%) IPTV
Operating Systems
1 119 (89.47%) Linux
2 60 (45.11%) Red Hat Enterprise Linux
3 38 (28.57%) UNIX
4 29 (21.80%) Windows
4 29 (21.80%) Debian
4 29 (21.80%) Ubuntu
5 13 (9.77%) Windows Server 2008
6 8 (6.02%) Fedora
7 7 (5.26%) Windows Server 2003
8 6 (4.51%) SUSE
9 5 (3.76%) Windows 7
9 5 (3.76%) Oracle Linux
9 5 (3.76%) Solaris
10 3 (2.26%) Scientific Linux
11 2 (1.50%) Mac OS X
12 1 (0.75%) HPUX
12 1 (0.75%) Windows 8
12 1 (0.75%) Windows Server 2012
12 1 (0.75%) Windows Mobile
12 1 (0.75%) Mac OS X Server
Processes & Methodologies
1 29 (21.80%) Continuous Integration
2 17 (12.78%) Agile Software Development
3 14 (10.53%) TDD
3 14 (10.53%) Load Balancing
3 14 (10.53%) Configuration Management
4 9 (6.77%) E-Commerce
4 9 (6.77%) BDD
4 9 (6.77%) Performance Tuning
5 7 (5.26%) Disaster Recovery
6 6 (4.51%) ITIL
6 6 (4.51%) Workflow
6 6 (4.51%) Scrum
6 6 (4.51%) Kernel Tuning
7 5 (3.76%) Performance Monitoring
7 5 (3.76%) Continuous Improvement
7 5 (3.76%) Kanban
8 4 (3.01%) Migration
8 4 (3.01%) Data Management
8 4 (3.01%) Software Engineering
8 4 (3.01%) OO
Programming Languages
1 53 (39.85%) Python
2 49 (36.84%) Perl
3 48 (36.09%) Bash Shell
4 45 (33.83%) PHP
5 37 (27.82%) Ruby
6 28 (21.05%) Java
7 21 (15.79%) Shell Script
8 8 (6.02%) JavaScript
9 6 (4.51%) PowerShell
10 5 (3.76%) sed
10 5 (3.76%) AWK
10 5 (3.76%) SQL
11 2 (1.50%) C#
12 1 (0.75%) C++
12 1 (0.75%) Jython
12 1 (0.75%) Scala
12 1 (0.75%) Korn
12 1 (0.75%) Groovy
12 1 (0.75%) PL/SQL
Qualifications
1 4 (3.01%) Degree
2 2 (1.50%) RHCE
2 2 (1.50%) RHCT
2 2 (1.50%) LPIC
3 1 (0.75%) ISTQB
3 1 (0.75%) SC Cleared
3 1 (0.75%) Security Cleared
3 1 (0.75%) CCNA
3 1 (0.75%) ISEB
3 1 (0.75%) Cisco Certification
Quality Assurance & Compliance
1 4 (3.01%) QA
2 1 (0.75%) SLA
System Software
1 28 (21.05%) VMware Infrastructure
2 18 (13.53%) Xen
3 11 (8.27%) Varnish
3 11 (8.27%) Active Directory
4 10 (7.52%) NFS
4 10 (7.52%) VMware ESX
5 9 (6.77%) VMware ESXi
6 8 (6.02%) KVM
7 7 (5.26%) vCloud
8 6 (4.51%) XenServer
9 5 (3.76%) VirtualBox
9 5 (3.76%) Oracle RAC
10 4 (3.01%) Shibboleth
11 3 (2.26%) Apache Flume
12 2 (1.50%) Hyper-V
12 2 (1.50%) Postfix
12 2 (1.50%) Sendmail
13 1 (0.75%) Samba
13 1 (0.75%) SpamAssassin
13 1 (0.75%) vSphere
Systems Management
1 79 (59.40%) Puppet
2 60 (45.11%) Opscode Chef
3 52 (39.10%) Nagios
4 26 (19.55%) ZABBIX
5 20 (15.04%) Cacti
6 9 (6.77%) StatsD
6 9 (6.77%) Vagrant
7 6 (4.51%) Ansible
7 6 (4.51%) Cobbler
7 6 (4.51%) Munin
8 4 (3.01%) Zenoss
8 4 (3.01%) Capistrano
8 4 (3.01%) Red Hat Spacewalk
9 3 (2.26%) HAProxy
10 2 (1.50%) Tivoli Storage Manager
10 2 (1.50%) Foglight
11 1 (0.75%) Norton AntiVirus
11 1 (0.75%) YUM
Vendors
1 94 (70.68%) Red Hat
2 34 (25.56%) VMware
3 23 (17.29%) Rackspace
4 11 (8.27%) Oracle
5 10 (7.52%) Splunk
6 9 (6.77%) Percona
6 9 (6.77%) HP
6 9 (6.77%) NetApp
7 8 (6.02%) Citrix
7 8 (6.02%) Microsoft
7 8 (6.02%) Cisco
8 4 (3.01%) IBM
8 4 (3.01%) Dell
8 4 (3.01%) Veritas
8 4 (3.01%) New Relic
8 4 (3.01%) Infoblox
9 3 (2.26%) EMC
9 3 (2.26%) JBoss
10 2 (1.50%) Apple
10 2 (1.50%) CheckPoint
London
Harvey Nash plc
Rate: £425 per day
Posted: 6 hours ago
London
Opus Recruitment Solutions Ltd
Rate: Market Rate
Posted: 8 days ago
London
Digital Gurus
Rate: £375 - £425 Per Day
Posted: 10 days ago
London
Computer Futures
Posted: 20 days ago