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 23 September 2014 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
23 Sep 2014
Same period 2013 Same period 2012
CentOS Linux
Rank 290 338 358
Rank change year-on-year
+48 +20
Contract jobs citing CentOS 126 92 62
As % of all contract IT jobs located in London 0.51% 0.37% 0.24%
As % of the Operating Systems category 2.27% 1.59% 1.13%
Number of daily rates quoted 91 72 39
Average daily rate
Keep up to 90%
of your Daily Rate
Get a Free Illustration
£400 £365 £363
Average daily rate % change year-on-year
+9.58% +0.68%
90% offered a daily rate of more than £325 £228 £289
10% offered a daily rate of more than £525 £450 £422
UK excluding London average daily rate £375 £375 £294
% change year-on-year
- +27.65%
Number of hourly rates quoted 0 0 1
Average hourly rate - - £20.50
UK excluding London average hourly rate - £45.00 £21.00
% change year-on-year
- +114.28%
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
5562 5780 5504
As % of all contract IT jobs located in London 22.69% 23.00% 21.03%
Number of daily rates quoted 3732 3814 3397
Average daily rate £400 £400 £375
Average daily rate % change year-on-year
- +6.66%
90% offered a daily rate of more than £175 £213 £200
10% offered a daily rate of more than £550 £550 £543
UK excluding London average daily rate £325 £325 £320
% change year-on-year
- +1.56%
Number of hourly rates quoted 243 248 329
Average hourly rate £15.00 £17.50 £18.00
Average hourly rate % change year-on-year
-14.28% -2.77%
90% offered a hourly rate of more than £12.00 £13.00 £12.00
10% offered a hourly rate of more than £34.50 £32.35 £40.00
UK excluding London average hourly rate £16.16 £15.50 £17.00
% change year-on-year
+4.25% -8.82%

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 23 September 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 23 September 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
(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 15 £425 +17.24% 7
Hammersmith - 2 £413 -
Kingston Upon Thames - 1 £388 - 1
Twickenham - - - -
Uxbridge - - - -
CentOS
England

CentOS
Top 30 Related IT Skills in London

For the 6 months to 23 September 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.

1 181 (92.82%) Linux
2 120 (61.54%) Puppet
3 111 (56.92%) DevOps
4 103 (52.82%) Red Hat
5 88 (45.13%) Python
6 84 (43.08%) Red Hat Enterprise Linux
7 83 (42.56%) Opscode Chef
8 81 (41.54%) PHP
9 80 (41.03%) Apache
10 76 (38.97%) Agile Software Development
10 76 (38.97%) Ubuntu
11 74 (37.95%) Git (software)
11 74 (37.95%) MySQL
12 70 (35.90%) Bash Shell
13 65 (33.33%) Jenkins
13 65 (33.33%) Perl
14 63 (32.31%) Nagios
15 58 (29.74%) Web Services
16 57 (29.23%) Java
17 56 (28.72%) Continuous Integration
18 53 (27.18%) Ruby
19 50 (25.64%) Amazon AWS
20 49 (25.13%) Open Source
21 47 (24.10%) Configuration Management
22 45 (23.08%) MongoDB
23 44 (22.56%) Maven
24 42 (21.54%) LAMP
24 42 (21.54%) ZABBIX
24 42 (21.54%) NoSQL
25 39 (20.00%) Scrum

CentOS
Top Related IT Skills in London by Category

For the 6 months to 23 September 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 80 (41.03%) Apache
2 24 (12.31%) nginx
3 23 (11.79%) OpenStack
4 17 (8.72%) Elasticsearch
5 14 (7.18%) Node.js
6 10 (5.13%) Moodle
7 9 (4.62%) MS Exchange
8 8 (4.10%) Tomcat
9 6 (3.08%) SharePoint
9 6 (3.08%) SharePoint 2010
9 6 (3.08%) Exchange Server 2010
10 5 (2.56%) Office Communications Server
11 4 (2.05%) Confluence
11 4 (2.05%) WebLogic
11 4 (2.05%) IIS
12 3 (1.54%) WordPress
12 3 (1.54%) Oracle SOA Suite
13 2 (1.03%) Drupal
14 1 (0.51%) Apache Solr
14 1 (0.51%) Blackberry Enterprise Server
Applications
1 2 (1.03%) MS Office
2 1 (0.51%) MS Excel
Business Applications
1 2 (1.03%) Magento
2 1 (0.51%) Oracle BPM
Cloud Services
1 50 (25.64%) Amazon AWS
2 19 (9.74%) Amazon S3
3 17 (8.72%) Amazon EC2
4 4 (2.05%) Cloud Computing
4 4 (2.05%) SaaS
4 4 (2.05%) Amazon ELB
5 2 (1.03%) Route 53
5 2 (1.03%) PaaS
5 2 (1.03%) Office 365
6 1 (0.51%) Joyent
6 1 (0.51%) Amazon SQS
6 1 (0.51%) Google Apps
6 1 (0.51%) Amazon EMR
Communications & Networking
1 20 (10.26%) Internet
2 14 (7.18%) DNS
3 11 (5.64%) LDAP
4 10 (5.13%) SSH
5 9 (4.62%) Ethernet
5 9 (4.62%) SAN
6 7 (3.59%) iSCSI
7 6 (3.08%) TCP/IP
8 5 (2.56%) Firewall
9 4 (2.05%) BGP
9 4 (2.05%) Fibre Channel
10 3 (1.54%) VPN
10 3 (1.54%) WAN
10 3 (1.54%) NAS
11 2 (1.03%) DHCP
11 2 (1.03%) SSL
11 2 (1.03%) DMZ
11 2 (1.03%) F5 BIG-IP LTM
11 2 (1.03%) Multicast
11 2 (1.03%) VLAN
Database & Business Intelligence
1 74 (37.95%) MySQL
2 45 (23.08%) MongoDB
3 42 (21.54%) NoSQL
4 31 (15.90%) Apache Cassandra
5 20 (10.26%) Big Data
6 19 (9.74%) Hadoop
7 18 (9.23%) CouchDB
7 18 (9.23%) PostgreSQL
8 16 (8.21%) Riak
9 9 (4.62%) Redis
9 9 (4.62%) SQL Server
10 5 (2.56%) Couchbase
11 3 (1.54%) Amazon RDS
11 3 (1.54%) Oracle Database
11 3 (1.54%) SQL Server Reporting Services
11 3 (1.54%) SQL Server 2005
11 3 (1.54%) SQL Server Integration Services
11 3 (1.54%) Oracle Database 11g
11 3 (1.54%) SQL Server 2012
12 2 (1.03%) Relational Database
Development Applications
1 74 (37.95%) Git (software)
2 65 (33.33%) Jenkins
3 44 (22.56%) Maven
4 20 (10.26%) Hudson
5 11 (5.64%) Subversion
6 9 (4.62%) PHPUnit
7 5 (2.56%) Cucumber
7 5 (2.56%) JUnit
7 5 (2.56%) JIRA
8 4 (2.05%) Mercurial
8 4 (2.05%) Behat
9 3 (1.54%) Gerrit
9 3 (1.54%) Artifactory
10 2 (1.03%) FishEye
10 2 (1.03%) Selenium
10 2 (1.03%) Atlassian Bamboo
10 2 (1.03%) Ant
11 1 (0.51%) JMeter
11 1 (0.51%) Jasmine
11 1 (0.51%) Gradle
General
1 10 (5.13%) Games
2 7 (3.59%) Finance
3 3 (1.54%) Publishing
3 3 (1.54%) Banking
4 2 (1.03%) Retail
4 2 (1.03%) Electronics
4 2 (1.03%) Legal
4 2 (1.03%) Advertising
5 1 (0.51%) Billing
Job Titles
1 56 (28.72%) DevOps Engineer
2 30 (15.38%) Developer
3 27 (13.85%) Senior DevOps Engineer
4 20 (10.26%) Systems Administrator
5 19 (9.74%) Administrator
5 19 (9.74%) Architect
5 19 (9.74%) Linux DevOps Engineer
6 18 (9.23%) Linux Engineer
7 14 (7.18%) DevOps Architect
8 12 (6.15%) Linux Systems Administrator
8 12 (6.15%) PHP Developer
9 11 (5.64%) Linux Administrator
10 8 (4.10%) Analyst
11 7 (3.59%) DBA
11 7 (3.59%) Java Developer
12 6 (3.08%) Lead Architect
12 6 (3.08%) PHP Zend Developer
13 5 (2.56%) Designer
13 5 (2.56%) Systems Engineer
14 4 (2.05%) Technical Analyst
Libraries, Frameworks & Software Standards
1 58 (29.74%) Web Services
2 42 (21.54%) LAMP
3 20 (10.26%) MCollective
4 18 (9.23%) HTML
5 17 (8.72%) RESTful
6 16 (8.21%) HTML5
7 11 (5.64%) jQuery
7 11 (5.64%) CSS
8 9 (4.62%) Regular Expression
9 8 (4.10%) Zend Framework
9 8 (4.10%) XML
10 7 (3.59%) AngularJS
11 6 (3.08%) SOAP
11 6 (3.08%) JSON
12 5 (2.56%) Backbone.js
12 5 (2.56%) Semantic HTML
12 5 (2.56%) CSS3
13 4 (2.05%) Laravel
13 4 (2.05%) Play Framework
13 4 (2.05%) RabbitMQ
Miscellaneous
1 49 (25.13%) Open Source
2 21 (10.77%) Computer Science
3 14 (7.18%) Replication
4 10 (5.13%) E-Learning
5 8 (4.10%) Online Games
6 7 (3.59%) Clustering
7 6 (3.08%) Blackberry
8 5 (2.56%) VLE
8 5 (2.56%) User Experience
9 4 (2.05%) Learning Management System
10 3 (1.54%) Mobile App
10 3 (1.54%) Enterprise Software
11 2 (1.03%) iSeries
11 2 (1.03%) STB
11 2 (1.03%) Analytical Skills
12 1 (0.51%) Client/Server
12 1 (0.51%) Mathematics
12 1 (0.51%) Management Information System
12 1 (0.51%) Blog
12 1 (0.51%) Social Network
Operating Systems
1 181 (92.82%) Linux
2 84 (43.08%) Red Hat Enterprise Linux
3 76 (38.97%) Ubuntu
4 36 (18.46%) Debian
4 36 (18.46%) UNIX
5 22 (11.28%) Windows
6 8 (4.10%) Windows Server 2008
7 7 (3.59%) Windows Server 2003
8 5 (2.56%) AIX
9 4 (2.05%) Fedora
10 2 (1.03%) VMS
10 2 (1.03%) Windows Server 2012
11 1 (0.51%) Mac OS X
11 1 (0.51%) Windows XP
11 1 (0.51%) Solaris
11 1 (0.51%) SUSE
11 1 (0.51%) Mac OS
11 1 (0.51%) Apple iOS
11 1 (0.51%) Scientific Linux
11 1 (0.51%) Windows 8
Processes & Methodologies
1 111 (56.92%) DevOps
2 76 (38.97%) Agile Software Development
3 56 (28.72%) Continuous Integration
4 47 (24.10%) Configuration Management
5 39 (20.00%) Scrum
6 32 (16.41%) Load Balancing
7 28 (14.36%) Kanban
8 25 (12.82%) ITIL
9 20 (10.26%) Build Automation
10 18 (9.23%) Service Delivery
11 16 (8.21%) BDD
12 15 (7.69%) OO
13 14 (7.18%) TDD
14 13 (6.67%) Performance Testing
15 12 (6.15%) Mentoring
16 10 (5.13%) Data Modelling
17 8 (4.10%) Workflow
17 8 (4.10%) Performance Tuning
18 7 (3.59%) SOA
19 5 (2.56%) Migration
Programming Languages
1 88 (45.13%) Python
2 81 (41.54%) PHP
3 70 (35.90%) Bash Shell
4 65 (33.33%) Perl
5 57 (29.23%) Java
6 53 (27.18%) Ruby
7 37 (18.97%) JavaScript
8 22 (11.28%) SQL
9 16 (8.21%) Shell Script
10 9 (4.62%) sed
11 6 (3.08%) Scala
12 3 (1.54%) T-SQL
12 3 (1.54%) PowerShell
13 2 (1.03%) TypeScript
13 2 (1.03%) XQuery
13 2 (1.03%) WebLogic Scripting Tool
13 2 (1.03%) PHP5
14 1 (0.51%) Korn
14 1 (0.51%) C-shell
14 1 (0.51%) C
Qualifications
1 16 (8.21%) Security Cleared
2 15 (7.69%) SC Cleared
3 5 (2.56%) Degree
4 3 (1.54%) MCSE
4 3 (1.54%) Microsoft Certification
5 2 (1.03%) RHCE
5 2 (1.03%) LPIC
6 1 (0.51%) CCNA
6 1 (0.51%) Cisco Certification
6 1 (0.51%) Linux+ Certification
6 1 (0.51%) RHCT
Quality Assurance & Compliance
1 9 (4.62%) SLA
2 3 (1.54%) QA
3 1 (0.51%) PCI DSS
System Software
1 21 (10.77%) vCloud
2 19 (9.74%) VMware Infrastructure
3 13 (6.67%) Active Directory
4 8 (4.10%) Xen
4 8 (4.10%) XenServer
4 8 (4.10%) Varnish
5 6 (3.08%) NFS
5 6 (3.08%) vSphere
6 3 (1.54%) Docker
6 3 (1.54%) Hyper-V
7 2 (1.03%) Veritas Cluster Server
7 2 (1.03%) VMware ESXi
8 1 (0.51%) XenApp
8 1 (0.51%) Microsoft Virtual Server
8 1 (0.51%) Citrix Presentation Server
8 1 (0.51%) VMware ESX
Systems Management
1 120 (61.54%) Puppet
2 83 (42.56%) Opscode Chef
3 63 (32.31%) Nagios
4 42 (21.54%) ZABBIX
5 31 (15.90%) Cacti
6 23 (11.79%) Salt
7 17 (8.72%) Kibana
7 17 (8.72%) Zenoss
8 14 (7.18%) Graylog2
9 9 (4.62%) Red Hat Spacewalk
9 9 (4.62%) Cobbler
10 8 (4.10%) Opsview
10 8 (4.10%) Ansible
11 7 (3.59%) Vagrant
12 6 (3.08%) Capistrano
13 5 (2.56%) CFEngine
13 5 (2.56%) HAProxy
13 5 (2.56%) logstash
14 4 (2.05%) SCCM
15 3 (1.54%) SCOM
Vendors
1 103 (52.82%) Red Hat
2 26 (13.33%) VMware
3 24 (12.31%) Splunk
4 20 (10.26%) Rackspace
5 17 (8.72%) Perforce
6 13 (6.67%) Oracle
7 11 (5.64%) Percona
8 8 (4.10%) Zend
8 8 (4.10%) Dell
9 7 (3.59%) Microsoft
9 7 (3.59%) Cisco
9 7 (3.59%) SaltStack
10 6 (3.08%) Infoblox
10 6 (3.08%) JBoss
10 6 (3.08%) Google
10 6 (3.08%) Veritas
11 5 (2.56%) Citrix
11 5 (2.56%) New Relic
12 2 (1.03%) F5
12 2 (1.03%) Juniper
City, London
Oliver Bernard
Rate: From £500 to £550 per day
Posted: Yesterday
London
Lorien Resourcing
Posted: 6 days ago
Croydon, Surrey
Venturi
Rate: £400 per day
Posted: 6 days ago
Central London / West End
Reed Business Information Ltd
Rate: From £400 to £500 per day direct - no agency margin
Posted: 13 days ago
London
Opus Recruitment Solutions Ltd
Rate: Market Rate
Posted: 15 days ago