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 24 October 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
24 Oct 2014
Same period 2013 Same period 2012
CentOS Linux
Rank 281 351 372
Rank change year-on-year
+70 +21
Contract jobs citing CentOS 146 69 44
As % of all contract IT jobs located in London 0.59% 0.27% 0.18%
As % of the Operating Systems category 2.59% 1.20% 0.85%
Number of daily rates quoted 108 50 27
Average daily rate
Keep up to 90%
of your Daily Rate
Get a Free Illustration
£425 £365 £375
Average daily rate % change year-on-year
+16.43% -2.66%
90% offered a daily rate of more than £343 £300 £284
10% offered a daily rate of more than £525 £450 £450
UK excluding London average daily rate £388 £363 £315
% change year-on-year
+6.89% +15.07%
Number of hourly rates quoted 0 0 1
Average hourly rate - - £20.50
UK excluding London average hourly rate - £32.50 £21.00
% change year-on-year
- +54.76%
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
5643 5770 5152
As % of all contract IT jobs located in London 22.89% 22.77% 21.30%
Number of daily rates quoted 3903 3815 3369
Average daily rate £400 £400 £375
Average daily rate % change year-on-year
- +6.66%
90% offered a daily rate of more than £180 £225 £200
10% offered a daily rate of more than £550 £560 £575
UK excluding London average daily rate £325 £320 £325
% change year-on-year
+1.56% -1.53%
Number of hourly rates quoted 257 233 248
Average hourly rate £15.50 £17.00 £18.00
Average hourly rate % change year-on-year
-8.82% -5.55%
90% offered a hourly rate of more than £11.50 £13.00 £12.00
10% offered a hourly rate of more than £34.00 £31.50 £40.00
UK excluding London average hourly rate £16.16 £15.00 £17.00
% change year-on-year
+7.73% -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 24 October 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 24 October 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 +14 21 £400 +6.66% 10
Hammersmith - 1 £413 -
Kingston Upon Thames - - - -
Twickenham - - - -
Uxbridge - - - -
CentOS
England

CentOS
Top 30 Related IT Skills in London

For the 6 months to 24 October 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.

1 215 (92.27%) Linux
2 141 (60.52%) Puppet
2 141 (60.52%) DevOps
3 112 (48.07%) Red Hat
4 110 (47.21%) Red Hat Enterprise Linux
5 101 (43.35%) Git (software)
6 100 (42.92%) Opscode Chef
7 98 (42.06%) Agile Software Development
8 94 (40.34%) Ubuntu
8 94 (40.34%) Python
9 89 (38.20%) PHP
9 89 (38.20%) Jenkins
10 88 (37.77%) Bash Shell
11 87 (37.34%) Apache
12 78 (33.48%) Java
12 78 (33.48%) MySQL
12 78 (33.48%) Continuous Integration
13 73 (31.33%) Perl
14 71 (30.47%) Ruby
15 63 (27.04%) Nagios
16 62 (26.61%) Maven
17 60 (25.75%) Web Services
18 55 (23.61%) Amazon AWS
19 53 (22.75%) MongoDB
19 53 (22.75%) Configuration Management
20 52 (22.32%) Open Source
21 50 (21.46%) Scrum
22 48 (20.60%) ZABBIX
23 46 (19.74%) NoSQL
24 45 (19.31%) LAMP

CentOS
Top Related IT Skills in London by Category

For the 6 months to 24 October 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 87 (37.34%) Apache
2 28 (12.02%) OpenStack
3 23 (9.87%) nginx
4 19 (8.15%) Elasticsearch
5 16 (6.87%) Node.js
6 11 (4.72%) Moodle
7 9 (3.86%) Tomcat
7 9 (3.86%) MS Exchange
8 8 (3.43%) JBoss
9 6 (2.58%) Confluence
9 6 (2.58%) SharePoint 2010
9 6 (2.58%) Exchange Server 2010
9 6 (2.58%) SharePoint
10 5 (2.15%) Office Communications Server
11 4 (1.72%) WebLogic
11 4 (1.72%) IIS
12 3 (1.29%) WordPress
12 3 (1.29%) Oracle SOA Suite
13 2 (0.86%) Drupal
14 1 (0.43%) Blackberry Enterprise Server
Applications
1 8 (3.43%) MS Excel
2 3 (1.29%) MS Office
Business Applications
1 2 (0.86%) Magento
2 1 (0.43%) Oracle BPM
Cloud Services
1 55 (23.61%) Amazon AWS
2 19 (8.15%) Amazon S3
3 15 (6.44%) Amazon EC2
4 9 (3.86%) PaaS
5 6 (2.58%) Amazon ELB
6 4 (1.72%) Cloud Computing
6 4 (1.72%) SaaS
7 2 (0.86%) Google Apps
7 2 (0.86%) Office 365
7 2 (0.86%) Joyent
7 2 (0.86%) Route 53
8 1 (0.43%) Amazon EMR
8 1 (0.43%) Amazon SQS
Communications & Networking
1 23 (9.87%) Internet
2 19 (8.15%) DNS
3 13 (5.58%) LDAP
4 12 (5.15%) SSH
5 10 (4.29%) Ethernet
6 9 (3.86%) SAN
7 7 (3.00%) Firewall
7 7 (3.00%) iSCSI
8 6 (2.58%) TCP/IP
9 5 (2.15%) BGP
10 4 (1.72%) Wi-Fi
10 4 (1.72%) NAS
10 4 (1.72%) Fibre Channel
10 4 (1.72%) VPN
10 4 (1.72%) WAN
11 3 (1.29%) HTTP
11 3 (1.29%) LAN
11 3 (1.29%) OSPF
12 2 (0.86%) DAB
12 2 (0.86%) BIG-IP
Database & Business Intelligence
1 78 (33.48%) MySQL
2 53 (22.75%) MongoDB
3 46 (19.74%) NoSQL
4 35 (15.02%) Apache Cassandra
5 22 (9.44%) PostgreSQL
6 21 (9.01%) Hadoop
6 21 (9.01%) Big Data
7 19 (8.15%) CouchDB
8 17 (7.30%) Riak
9 13 (5.58%) Redis
9 13 (5.58%) SQL Server
10 5 (2.15%) SQL Server 2012
10 5 (2.15%) Couchbase
11 3 (1.29%) Amazon RDS
11 3 (1.29%) Oracle Database
11 3 (1.29%) Relational Database
11 3 (1.29%) Oracle Database 11g
12 2 (0.86%) SQL Server Reporting Services
12 2 (0.86%) SQL Server 2005
12 2 (0.86%) SQL Server Integration Services
Development Applications
1 101 (43.35%) Git (software)
2 89 (38.20%) Jenkins
3 62 (26.61%) Maven
4 22 (9.44%) Hudson
5 14 (6.01%) Subversion
6 10 (4.29%) PHPUnit
7 8 (3.43%) JIRA
8 6 (2.58%) Atlassian Bamboo
9 5 (2.15%) Cucumber
9 5 (2.15%) JUnit
10 4 (1.72%) Selenium
10 4 (1.72%) Mercurial
10 4 (1.72%) Behat
11 3 (1.29%) Artifactory
11 3 (1.29%) Gerrit
12 2 (0.86%) FishEye
12 2 (0.86%) Ant
13 1 (0.43%) JMeter
13 1 (0.43%) DbUnit
13 1 (0.43%) Jasmine
General
1 10 (4.29%) Finance
1 10 (4.29%) Games
2 5 (2.15%) Publishing
3 3 (1.29%) Banking
4 2 (0.86%) Retail
4 2 (0.86%) Electronics
4 2 (0.86%) Legal
4 2 (0.86%) Advertising
5 1 (0.43%) Billing
Job Titles
1 73 (31.33%) DevOps Engineer
2 41 (17.60%) Developer
3 32 (13.73%) Senior DevOps Engineer
4 27 (11.59%) Linux DevOps Engineer
5 24 (10.30%) Systems Administrator
5 24 (10.30%) Administrator
6 23 (9.87%) Architect
7 18 (7.73%) Linux Engineer
8 17 (7.30%) DevOps Architect
9 15 (6.44%) Linux Administrator
10 14 (6.01%) PHP Developer
10 14 (6.01%) Linux Systems Administrator
11 10 (4.29%) Senior Developer
12 8 (3.43%) Analyst
13 7 (3.00%) Java Developer
13 7 (3.00%) Operations Engineer
13 7 (3.00%) Senior Operations Engineer
13 7 (3.00%) DevOps Administrator
13 7 (3.00%) PHP Zend Developer
14 6 (2.58%) Designer
Libraries, Frameworks & Software Standards
1 60 (25.75%) Web Services
2 45 (19.31%) LAMP
3 23 (9.87%) MCollective
4 20 (8.58%) HTML
5 17 (7.30%) RESTful
5 17 (7.30%) HTML5
6 13 (5.58%) jQuery
7 12 (5.15%) CSS
8 10 (4.29%) Regular Expression
9 9 (3.86%) Zend Framework
9 9 (3.86%) XML
10 7 (3.00%) JSON
10 7 (3.00%) AngularJS
11 6 (2.58%) .NET
11 6 (2.58%) SOAP
12 5 (2.15%) CSS3
12 5 (2.15%) Semantic HTML
13 4 (1.72%) Play Framework
13 4 (1.72%) REST
13 4 (1.72%) Laravel
Miscellaneous
1 52 (22.32%) Open Source
2 24 (10.30%) Computer Science
3 15 (6.44%) Replication
4 10 (4.29%) E-Learning
5 8 (3.43%) Clustering
5 8 (3.43%) Online Games
6 7 (3.00%) Data Structures
7 6 (2.58%) Blackberry
7 6 (2.58%) VLE
8 5 (2.15%) Algorithms
8 5 (2.15%) User Experience
9 4 (1.72%) Learning Management System
10 3 (1.29%) Analytical Skills
10 3 (1.29%) Mobile App
10 3 (1.29%) Enterprise Software
11 2 (0.86%) iSeries
11 2 (0.86%) Wiki
11 2 (0.86%) STB
12 1 (0.43%) Economics
12 1 (0.43%) Mathematics
Operating Systems
1 215 (92.27%) Linux
2 110 (47.21%) Red Hat Enterprise Linux
3 94 (40.34%) Ubuntu
4 35 (15.02%) Debian
4 35 (15.02%) UNIX
5 27 (11.59%) Windows
6 11 (4.72%) Windows Server 2008
7 10 (4.29%) Windows Server 2003
8 5 (2.15%) AIX
9 3 (1.29%) Fedora
9 3 (1.29%) Windows Server 2012
10 2 (0.86%) Windows 8
10 2 (0.86%) Solaris
10 2 (0.86%) Windows XP
10 2 (0.86%) VMS
10 2 (0.86%) Mac OS X
11 1 (0.43%) SUSE
11 1 (0.43%) Mac OS
11 1 (0.43%) Apple iOS
Processes & Methodologies
1 141 (60.52%) DevOps
2 98 (42.06%) Agile Software Development
3 78 (33.48%) Continuous Integration
4 53 (22.75%) Configuration Management
5 50 (21.46%) Scrum
6 37 (15.88%) Load Balancing
7 36 (15.45%) Kanban
8 31 (13.30%) Build Automation
9 25 (10.73%) ITIL
10 23 (9.87%) Service Delivery
11 16 (6.87%) OO
11 16 (6.87%) BDD
12 15 (6.44%) Performance Testing
12 15 (6.44%) TDD
13 13 (5.58%) Mentoring
14 12 (5.15%) Data Modelling
15 11 (4.72%) Automated Testing
16 10 (4.29%) SOA
16 10 (4.29%) Performance Tuning
17 8 (3.43%) Workflow
Programming Languages
1 94 (40.34%) Python
2 89 (38.20%) PHP
3 88 (37.77%) Bash Shell
4 78 (33.48%) Java
5 73 (31.33%) Perl
6 71 (30.47%) Ruby
7 38 (16.31%) JavaScript
8 25 (10.73%) SQL
9 18 (7.73%) Shell Script
10 10 (4.29%) sed
11 6 (2.58%) Scala
12 3 (1.29%) PowerShell
12 3 (1.29%) PHP5
12 3 (1.29%) T-SQL
13 2 (0.86%) XQuery
13 2 (0.86%) WebLogic Scripting Tool
13 2 (0.86%) TypeScript
14 1 (0.43%) Golang
14 1 (0.43%) C
14 1 (0.43%) Groovy
Qualifications
1 29 (12.45%) Security Cleared
2 25 (10.73%) SC Cleared
3 6 (2.58%) Degree
4 3 (1.29%) MCSE
4 3 (1.29%) Microsoft Certification
5 2 (0.86%) RHCE
5 2 (0.86%) LPIC
6 1 (0.43%) CCNA
6 1 (0.43%) Cisco Certification
6 1 (0.43%) Linux+ Certification
6 1 (0.43%) RHCT
Quality Assurance & Compliance
1 12 (5.15%) SLA
2 7 (3.00%) QA
3 1 (0.43%) PCI DSS
System Software
1 29 (12.45%) VMware Infrastructure
2 26 (11.16%) vCloud
3 12 (5.15%) Active Directory
4 9 (3.86%) XenServer
5 8 (3.43%) Xen
5 8 (3.43%) vSphere
5 8 (3.43%) Varnish
6 5 (2.15%) NFS
6 5 (2.15%) Hyper-V
7 3 (1.29%) VMware ESXi
7 3 (1.29%) Docker
8 2 (0.86%) Ceph
8 2 (0.86%) Veritas Cluster Server
8 2 (0.86%) VMware ESX
9 1 (0.43%) Samba
9 1 (0.43%) Postfix
9 1 (0.43%) XenApp
9 1 (0.43%) Citrix Presentation Server
Systems Management
1 141 (60.52%) Puppet
2 100 (42.92%) Opscode Chef
3 63 (27.04%) Nagios
4 48 (20.60%) ZABBIX
5 28 (12.02%) Cacti
6 24 (10.30%) Salt
7 20 (8.58%) Kibana
7 20 (8.58%) Zenoss
8 17 (7.30%) Graylog2
8 17 (7.30%) Ansible
9 13 (5.58%) Red Hat Spacewalk
10 11 (4.72%) Cobbler
11 9 (3.86%) Vagrant
12 8 (3.43%) Opsview
13 6 (2.58%) Capistrano
14 5 (2.15%) CFEngine
14 5 (2.15%) HAProxy
14 5 (2.15%) logstash
15 4 (1.72%) SCCM
16 3 (1.29%) SCOM
Vendors
1 112 (48.07%) Red Hat
2 38 (16.31%) VMware
3 27 (11.59%) Splunk
4 22 (9.44%) Perforce
4 22 (9.44%) Rackspace
5 15 (6.44%) Microsoft
6 13 (5.58%) Oracle
7 9 (3.86%) Cisco
7 9 (3.86%) Zend
7 9 (3.86%) Percona
8 8 (3.43%) Dell
9 7 (3.00%) Google
9 7 (3.00%) Veritas
9 7 (3.00%) New Relic
10 6 (2.58%) SaltStack
10 6 (2.58%) Infoblox
10 6 (2.58%) EMC
10 6 (2.58%) Citrix
11 4 (1.72%) IBM
12 3 (1.29%) HP
London
Opus Recruitment Solutions Ltd
Rate: Market Rate
Posted: Yesterday
City of London
Mint Recruitment Solutions
Rate: £280 - £300 per day
Posted: Yesterday
London
Experis Ltd
Rate: market rates
Posted: 2 days ago
London
Vertical IT
Rate: MARKET RATE + COMPETITIVE
Posted: 3 days ago
London
Spargonet Consulting Plc
Rate: £400 to £500 per day
Posted: 3 days ago
City, London
E-synergy Solutions
Rate: £500 - £600 per day + benefits
Posted: 3 days ago
West London
Opus Recruitment Solutions Ltd
Rate: Competitive Day Rate
Posted: 17 days ago
London
Austin Fraser Limited
Rate: £350 - £400 per day
Posted: 25 days ago