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 19 December 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
19 Dec 2014
Same period 2013 Same period 2012
CentOS Linux
Rank 246 357 321
Rank change year-on-year
+111 -36
Contract jobs citing CentOS 168 67 60
As % of all contract IT jobs located in London 0.73% 0.28% 0.28%
As % of the Operating Systems category 3.20% 1.24% 1.22%
Number of daily rates quoted 126 52 34
Average daily rate
Keep up to 90%
of your Daily Rate
Get a Free Illustration
£450 £400 £398
Average daily rate % change year-on-year
+12.50% +0.62%
90% offered a daily rate of more than £375 £310 £215
10% offered a daily rate of more than £546 £489 £447
UK excluding London average daily rate £375 £388 £341
% change year-on-year
-3.22% +13.55%
Number of hourly rates quoted 0 0 2
Average hourly rate - - £29.50
UK excluding London average hourly rate - £32.50 £32.50
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
5243 5404 4902
As % of all contract IT jobs located in London 22.74% 22.28% 22.91%
Number of daily rates quoted 3697 3602 3159
Average daily rate £400 £400 £390
Average daily rate % change year-on-year
- +2.56%
90% offered a daily rate of more than £185 £210 £205
10% offered a daily rate of more than £550 £550 £590
UK excluding London average daily rate £338 £310 £325
% change year-on-year
+8.87% -4.61%
Number of hourly rates quoted 192 220 300
Average hourly rate £15.86 £17.50 £18.70
Average hourly rate % change year-on-year
-9.37% -6.41%
90% offered a hourly rate of more than £11.59 £12.50 £12.00
10% offered a hourly rate of more than £26.00 £35.00 £40.00
UK excluding London average hourly rate £15.85 £15.00 £17.00
% change year-on-year
+5.66% -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 19 December 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 19 December 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 +5 23 £425 +1.49% 6
Croydon - 2 £400 -
Kingston Upon Thames - - - -
Uxbridge - - - -
Hammersmith - - - -
Bromley - - - - 1
CentOS
England

CentOS
Top 30 Related IT Skills in London

For the 6 months to 19 December 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.

1 273 (93.17%) Linux
2 198 (67.58%) Puppet
3 194 (66.21%) DevOps
4 144 (49.15%) Jenkins
5 138 (47.10%) Opscode Chef
5 138 (47.10%) Ubuntu
6 131 (44.71%) Red Hat
7 126 (43.00%) Python
7 126 (43.00%) Red Hat Enterprise Linux
7 126 (43.00%) Git (software)
8 125 (42.66%) Agile Software Development
9 121 (41.30%) Ruby
10 120 (40.96%) Bash Shell
11 113 (38.57%) Continuous Integration
12 107 (36.52%) Java
13 105 (35.84%) Apache
14 99 (33.79%) MySQL
15 93 (31.74%) Maven
16 92 (31.40%) PHP
17 86 (29.35%) Nagios
18 81 (27.65%) Perl
19 80 (27.30%) Web Services
20 76 (25.94%) MongoDB
21 73 (24.91%) Amazon AWS
21 73 (24.91%) VMware
22 70 (23.89%) Open Source
23 69 (23.55%) Configuration Management
24 65 (22.18%) NoSQL
25 64 (21.84%) Scrum
26 60 (20.48%) ZABBIX

CentOS
Top Related IT Skills in London by Category

For the 6 months to 19 December 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
1 105 (35.84%) Apache
2 44 (15.02%) OpenStack
3 34 (11.60%) nginx
4 23 (7.85%) Elasticsearch
5 20 (6.83%) Node.js
5 20 (6.83%) Tomcat
6 12 (4.10%) JBoss
7 11 (3.75%) Cloud Foundry
8 7 (2.39%) IIS
9 6 (2.05%) MS Exchange
10 5 (1.71%) Moodle
10 5 (1.71%) Confluence
11 3 (1.02%) SharePoint
11 3 (1.02%) Office Communications Server
11 3 (1.02%) WordPress
11 3 (1.02%) Exchange Server 2010
11 3 (1.02%) SharePoint 2010
12 2 (0.68%) WebLogic
12 2 (0.68%) Drupal
13 1 (0.34%) CMS
Applications
1 23 (7.85%) MS Excel
2 4 (1.37%) MS Office
Business Applications
1 3 (1.02%) ResourceLink
2 2 (0.68%) Magento
2 2 (0.68%) Agresso
3 1 (0.34%) Oracle BPM
Cloud Services
1 73 (24.91%) Amazon AWS
2 37 (12.63%) PaaS
3 25 (8.53%) Amazon S3
4 21 (7.17%) Amazon EC2
5 11 (3.75%) Heroku
5 11 (3.75%) Engine Yard
6 6 (2.05%) Amazon ELB
7 4 (1.37%) SaaS
7 4 (1.37%) GitHub
8 3 (1.02%) Google Cloud Platform
8 3 (1.02%) Route 53
9 2 (0.68%) Google Apps
9 2 (0.68%) Office 365
9 2 (0.68%) Cloud Computing
10 1 (0.34%) Microsoft Azure
10 1 (0.34%) Joyent
10 1 (0.34%) Amazon SQS
Communications & Networking
1 33 (11.26%) DNS
2 23 (7.85%) Firewall
3 22 (7.51%) TCP/IP
4 19 (6.48%) Internet
5 12 (4.10%) HTTP
5 12 (4.10%) VLAN
6 11 (3.75%) LDAP
6 11 (3.75%) iSCSI
7 10 (3.41%) SAN
7 10 (3.41%) SSL
7 10 (3.41%) VPN
8 9 (3.07%) Fibre Channel
9 7 (2.39%) WAN
10 6 (2.05%) LAN
10 6 (2.05%) Wi-Fi
11 4 (1.37%) NAS
12 3 (1.02%) SSH
12 3 (1.02%) Reverse Proxy
12 3 (1.02%) DHCP
12 3 (1.02%) BGP
Database & Business Intelligence
1 99 (33.79%) MySQL
2 76 (25.94%) MongoDB
3 65 (22.18%) NoSQL
4 54 (18.43%) Apache Cassandra
5 27 (9.22%) Hadoop
6 25 (8.53%) PostgreSQL
7 24 (8.19%) Big Data
8 22 (7.51%) CouchDB
9 20 (6.83%) Riak
10 19 (6.48%) Redis
11 17 (5.80%) SQL Server
12 15 (5.12%) Relational Database
13 12 (4.10%) RDBMS
14 8 (2.73%) SQL Server 2012
15 5 (1.71%) Couchbase
16 4 (1.37%) MariaDB
16 4 (1.37%) Amazon RDS
17 2 (0.68%) SQL Server 2008
18 1 (0.34%) Oracle Database 11g
18 1 (0.34%) Oracle Database
Development Applications
1 144 (49.15%) Jenkins
2 126 (43.00%) Git (software)
3 93 (31.74%) Maven
4 28 (9.56%) Subversion
5 25 (8.53%) Hudson
6 10 (3.41%) PHPUnit
6 10 (3.41%) Artifactory
7 8 (2.73%) Selenium
7 8 (2.73%) JIRA
8 6 (2.05%) Cucumber
8 6 (2.05%) Atlassian Bamboo
9 5 (1.71%) JUnit
9 5 (1.71%) Gradle
9 5 (1.71%) Mercurial
9 5 (1.71%) Behat
9 5 (1.71%) Gerrit
10 4 (1.37%) Grunt
11 3 (1.02%) JMeter
11 3 (1.02%) Liquibase
12 2 (0.68%) MSI
General
1 14 (4.78%) Games
2 11 (3.75%) Finance
3 5 (1.71%) Publishing
4 3 (1.02%) Banking
5 2 (0.68%) Retail
5 2 (0.68%) Legal
6 1 (0.34%) Manufacturing
6 1 (0.34%) Electronics
6 1 (0.34%) Billing
Job Titles
1 105 (35.84%) DevOps Engineer
2 57 (19.45%) Senior DevOps Engineer
3 45 (15.36%) Developer
4 38 (12.97%) Linux DevOps Engineer
5 31 (10.58%) Administrator
6 28 (9.56%) Systems Administrator
7 26 (8.87%) Architect
8 21 (7.17%) Linux Engineer
9 19 (6.48%) Linux Administrator
10 18 (6.14%) DevOps Architect
11 16 (5.46%) PHP Developer
12 15 (5.12%) Linux Systems Administrator
13 13 (4.44%) Senior Developer
14 10 (3.41%) Operations Engineer
14 10 (3.41%) Senior Operations Engineer
14 10 (3.41%) Systems Engineer
14 10 (3.41%) Java Developer
15 9 (3.07%) DevOps Administrator
16 7 (2.39%) Consultant
17 6 (2.05%) PHP Zend Developer
Libraries, Frameworks & Software Standards
1 80 (27.30%) Web Services
2 54 (18.43%) LAMP
3 34 (11.60%) MCollective
4 26 (8.87%) HTML
5 22 (7.51%) HTML5
6 21 (7.17%) jQuery
7 20 (6.83%) CSS
8 13 (4.44%) RESTful
9 12 (4.10%) JSON
10 10 (3.41%) REST
11 9 (3.07%) AngularJS
12 8 (2.73%) Zend Framework
13 7 (2.39%) Spring
13 7 (2.39%) XML
13 7 (2.39%) .NET
13 7 (2.39%) RabbitMQ
14 6 (2.05%) Backbone.js
14 6 (2.05%) CSS3
14 6 (2.05%) Doctrine
14 6 (2.05%) Play Framework
Miscellaneous
1 70 (23.89%) Open Source
2 28 (9.56%) Computer Science
3 19 (6.48%) Clustering
4 14 (4.78%) Replication
5 12 (4.10%) Device Driver
6 10 (3.41%) Online Games
7 7 (2.39%) Data Structures
8 4 (1.37%) User Experience
8 4 (1.37%) W3C
9 3 (1.02%) Interactive TV
9 3 (1.02%) E-Learning
9 3 (1.02%) Client/Server
9 3 (1.02%) Blackberry
9 3 (1.02%) Mobile App
9 3 (1.02%) Enterprise Software
9 3 (1.02%) Analytical Skills
9 3 (1.02%) Digital Media
10 2 (0.68%) iSeries
10 2 (0.68%) Algorithms
10 2 (0.68%) Management Information System
Operating Systems
1 273 (93.17%) Linux
2 138 (47.10%) Ubuntu
3 126 (43.00%) Red Hat Enterprise Linux
4 40 (13.65%) Windows
5 39 (13.31%) Debian
5 39 (13.31%) UNIX
6 16 (5.46%) Windows Server 2008
7 10 (3.41%) Windows Server 2012
8 9 (3.07%) Windows Server 2003
9 6 (2.05%) VMS
10 5 (1.71%) SUSE
11 4 (1.37%) Windows 7
12 3 (1.02%) Fedora
12 3 (1.02%) Solaris
12 3 (1.02%) SUSE Linux Enterprise Server
13 2 (0.68%) Windows 8
13 2 (0.68%) Mac OS X
13 2 (0.68%) AIX
13 2 (0.68%) Windows XP
14 1 (0.34%) Mac OS
Processes & Methodologies
1 194 (66.21%) DevOps
2 125 (42.66%) Agile Software Development
3 113 (38.57%) Continuous Integration
4 69 (23.55%) Configuration Management
5 64 (21.84%) Scrum
6 58 (19.80%) Load Balancing
7 43 (14.68%) Build Automation
8 40 (13.65%) Kanban
9 28 (9.56%) Service Delivery
10 25 (8.53%) Automated Testing
11 24 (8.19%) ITIL
12 23 (7.85%) Change Management
13 19 (6.48%) OO
14 18 (6.14%) BDD
15 16 (5.46%) Release Management
16 15 (5.12%) TDD
17 12 (4.10%) Performance Tuning
18 10 (3.41%) SOA
18 10 (3.41%) Workflow
19 9 (3.07%) Mentoring
Programming Languages
1 126 (43.00%) Python
2 121 (41.30%) Ruby
3 120 (40.96%) Bash Shell
4 107 (36.52%) Java
5 92 (31.40%) PHP
6 81 (27.65%) Perl
7 44 (15.02%) JavaScript
8 26 (8.87%) Shell Script
9 18 (6.14%) SQL
10 11 (3.75%) Korn
11 9 (3.07%) Scala
12 5 (1.71%) PowerShell
13 4 (1.37%) PHP5
14 3 (1.02%) T-SQL
14 3 (1.02%) Golang
15 2 (0.68%) sed
15 2 (0.68%) TypeScript
15 2 (0.68%) Groovy
16 1 (0.34%) XQuery
16 1 (0.34%) C
Qualifications
1 45 (15.36%) Security Cleared
2 36 (12.29%) SC Cleared
3 6 (2.05%) RHCSA
4 3 (1.02%) Degree
5 2 (0.68%) Cisco Certification
5 2 (0.68%) Microsoft Certification
5 2 (0.68%) RHCE
5 2 (0.68%) MCSE
5 2 (0.68%) LPIC
6 1 (0.34%) Linux+ Certification
6 1 (0.34%) RHCT
6 1 (0.34%) CCNP
6 1 (0.34%) CCNA
6 1 (0.34%) BC Cleared
6 1 (0.34%) DV Cleared
Quality Assurance & Compliance
1 19 (6.48%) QA
2 9 (3.07%) SLA
3 2 (0.68%) PCI DSS
System Software
1 41 (13.99%) VMware Infrastructure
2 35 (11.95%) vCloud
3 11 (3.75%) Xen
3 11 (3.75%) Active Directory
3 11 (3.75%) vSphere
4 9 (3.07%) NFS
4 9 (3.07%) Hyper-V
4 9 (3.07%) Varnish
5 8 (2.73%) XenServer
6 7 (2.39%) Docker
7 6 (2.05%) VMware ESXi
8 5 (1.71%) XenApp
9 4 (1.37%) XenDesktop
10 2 (0.68%) Veritas Cluster Server
10 2 (0.68%) Ceph
10 2 (0.68%) KVM
10 2 (0.68%) Terminal Services
10 2 (0.68%) Samba
10 2 (0.68%) VMware ESX
11 1 (0.34%) Citrix Presentation Server
Systems Management
1 198 (67.58%) Puppet
2 138 (47.10%) Opscode Chef
3 86 (29.35%) Nagios
4 60 (20.48%) ZABBIX
5 44 (15.02%) Ansible
6 36 (12.29%) Cacti
7 27 (9.22%) Cobbler
8 26 (8.87%) Salt
9 23 (7.85%) Kibana
10 22 (7.51%) Graphite
11 20 (6.83%) Zenoss
12 19 (6.48%) Graylog2
13 17 (5.80%) Red Hat Spacewalk
14 12 (4.10%) Vagrant
15 9 (3.07%) collectd
16 8 (2.73%) HAProxy
17 7 (2.39%) logstash
17 7 (2.39%) Capistrano
18 5 (1.71%) Opsview
19 4 (1.37%) CFEngine
Vendors
1 131 (44.71%) Red Hat
2 73 (24.91%) VMware
3 32 (10.92%) Microsoft
4 26 (8.87%) Splunk
5 25 (8.53%) Rackspace
6 24 (8.19%) Perforce
7 22 (7.51%) Oracle
8 16 (5.46%) Percona
9 11 (3.75%) Cisco
10 9 (3.07%) Citrix
11 8 (2.73%) EMC
11 8 (2.73%) Zend
12 7 (2.39%) Google
12 7 (2.39%) IBM
12 7 (2.39%) New Relic
13 6 (2.05%) AppDynamics
14 5 (1.71%) Dell
15 4 (1.37%) F5
15 4 (1.37%) Veritas
16 3 (1.02%) Cognos
London
Spargonet Consulting Plc
Rate: £400 - £450 per day
Posted: 2 days ago
London
Vertical IT
Rate: MARKET RATE + COMPETITIVE
Posted: 3 days ago
London
Brightred Resourcing
Rate: £350 - £400 per day
Posted: 10 days ago
London
Brightred Resourcing
Rate: £350 - £400 per day. 3 mths contract
Posted: 11 days ago