The table below looks at the statistics for CentOS skills in IT contracts advertised for the City of London region. Included is a guide to the average contractor rates offered in IT contracts that have cited CentOS over the 3 months to 5 May 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
5 May 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 186 197 194
Rank change year-on-year
+11 -3
Contract jobs citing CentOS 9 10 10
As % of all contract IT jobs located in the City of London 0.16% 0.16% 0.16%
As % of the Operating Systems category 0.79% 0.81% 0.77%
Number of daily rates quoted 8 5 10
Average daily rate
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of your Daily Rate
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£363 £438 £330
Average daily rate % change year-on-year
-17.14% +32.57%
90% offered a daily rate of more than £296 £248 £120
10% offered a daily rate of more than £480 £565 £500
UK excluding London average daily rate £375 £375 £300
% change year-on-year
- +25.00%
Number of hourly rates quoted 0 0 0
Average hourly rate - - -
UK excluding London average hourly rate - £35.00 £34.00
% change year-on-year
- +2.94%
CentOS
London

The following table is for comparison with the above and provides statistics for the entire Operating Systems category in contract jobs advertised in the City of London region.

Operating Systems Category
City of London
Contract IT job ads with a match in the
Operating Systems category
1145 1237 1292
As % of all contract IT jobs located in the City of London 20.79% 19.73% 20.51%
Number of daily rates quoted 874 903 896
Average daily rate £400 £400 £400
90% offered a daily rate of more than £200 £180 £225
10% offered a daily rate of more than £575 £600 £550
UK excluding London average daily rate £349 £315 £325
% change year-on-year
+10.79% -3.07%
Number of hourly rates quoted 47 53 73
Average hourly rate £17.87 £18.70 £25.00
Average hourly rate % change year-on-year
-4.46% -25.20%
90% offered a hourly rate of more than £12.50 £12.00 £12.50
10% offered a hourly rate of more than £22.83 £26.00 £135.00
UK excluding London average hourly rate £15.75 £15.88 £16.00
% change year-on-year
-0.78% -0.78%

CentOS
Jobs Demand Trend in the City of London

This chart provides a 3-month moving total of IT contractor jobs citing CentOS across the City of London region as a proportion of the total demand within the Operating Systems category.

CentOS Jobs Demand Trend in the City of London

CentOS
Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in IT contract jobs citing CentOS across the City of London region.

CentOS Daily Rate Trend in the City of London

CentOS
Daily Rate Histogram in the City of London

This chart provides a histogram of daily rates quoted in contract IT jobs citing CentOS across the City of London region over the 3 months to 5 May 2015.

CentOS Daily Rate Histogram in the City of London

CentOS
Hourly Rate Trend in the City of London

This chart provides the 3-month moving average for hourly rates quoted in IT contractor jobs citing CentOS across the City of London region.

CentOS Hourly Rate Trend in the City of London

CentOS
Top 30 Related IT Skills in the City of London

For the 6 months to 5 May 2015, IT contractor jobs across the City of 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 19 (82.61%) Linux
2 15 (65.22%) Puppet
3 13 (56.52%) Jenkins
4 12 (52.17%) Red Hat
5 11 (47.83%) Agile Software Development
5 11 (47.83%) DevOps
6 10 (43.48%) Red Hat Enterprise Linux
6 10 (43.48%) Git (software)
7 9 (39.13%) Configuration Management
7 9 (39.13%) MySQL
8 8 (34.78%) Bash Shell
9 7 (30.43%) Amazon AWS
9 7 (30.43%) Ruby
9 7 (30.43%) Java
9 7 (30.43%) Python
9 7 (30.43%) VMware
10 6 (26.09%) JavaScript
10 6 (26.09%) Perl
10 6 (26.09%) IIS
10 6 (26.09%) Windows
10 6 (26.09%) Ubuntu
10 6 (26.09%) Maven
10 6 (26.09%) Continuous Integration
11 5 (21.74%) Subversion
11 5 (21.74%) HTML5
11 5 (21.74%) HTML
11 5 (21.74%) CSS
11 5 (21.74%) DNS
11 5 (21.74%) Apache
12 4 (17.39%) Web Services

CentOS
Top Related IT Skills in the City of London by Category

For the 6 months to 5 May 2015, IT contractor jobs across the City of 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 6 (26.09%) IIS
2 5 (21.74%) Apache
3 4 (17.39%) OpenStack
4 2 (8.70%) Tomcat
4 2 (8.70%) nginx
4 2 (8.70%) Moodle
5 1 (4.35%) Elasticsearch
5 1 (4.35%) Node.js
5 1 (4.35%) Jetty
5 1 (4.35%) GlassFish
Applications
1 1 (4.35%) MS Office
1 1 (4.35%) Photoshop
Cloud Services
1 7 (30.43%) Amazon AWS
2 2 (8.70%) Amazon EC2
3 1 (4.35%) Route 53
3 1 (4.35%) IaaS
3 1 (4.35%) Amazon ELB
3 1 (4.35%) Rackspace Cloud
3 1 (4.35%) Amazon S3
3 1 (4.35%) SaaS
3 1 (4.35%) PaaS
Communications & Networking
1 5 (21.74%) DNS
2 2 (8.70%) Wi-Fi
2 2 (8.70%) DHCP
3 1 (4.35%) OpenVPN
3 1 (4.35%) IMAP
3 1 (4.35%) SNMP
3 1 (4.35%) VPN
3 1 (4.35%) IPv6
3 1 (4.35%) SSL
3 1 (4.35%) IPsec
3 1 (4.35%) Firewall
3 1 (4.35%) DVB
Database & Business Intelligence
1 9 (39.13%) MySQL
2 4 (17.39%) SQL Server
2 4 (17.39%) NoSQL
3 3 (13.04%) MongoDB
4 2 (8.70%) PostgreSQL
4 2 (8.70%) Apache Cassandra
4 2 (8.70%) SQL Server 2012
5 1 (4.35%) Redis
5 1 (4.35%) SQL Server Integration Services
5 1 (4.35%) SQL Server Reporting Services
Development Applications
1 13 (56.52%) Jenkins
2 10 (43.48%) Git (software)
3 6 (26.09%) Maven
4 5 (21.74%) Subversion
5 3 (13.04%) Grunt
6 2 (8.70%) Selenium
6 2 (8.70%) webpack
6 2 (8.70%) SonarQube
7 1 (4.35%) Gradle
7 1 (4.35%) Hudson
7 1 (4.35%) Mercurial
7 1 (4.35%) Ant
General
1 1 (4.35%) Games
Job Titles
1 8 (34.78%) DevOps Engineer
2 5 (21.74%) Developer
3 4 (17.39%) Linux DevOps Engineer
4 3 (13.04%) Analyst
5 2 (8.70%) Systems Engineer
5 2 (8.70%) Support Analyst
5 2 (8.70%) Applications Support
5 2 (8.70%) Applications Support Analyst
5 2 (8.70%) PHP Developer
5 2 (8.70%) Linux Engineer
5 2 (8.70%) Moodle Developer
5 2 (8.70%) Senior DevOps Engineer
5 2 (8.70%) Linux Systems Engineer
6 1 (4.35%) Full Stack Developer
6 1 (4.35%) DevOps Administrator
6 1 (4.35%) Linux Administrator
6 1 (4.35%) Applications Architect
6 1 (4.35%) Java Software Engineer
6 1 (4.35%) Server Engineer
6 1 (4.35%) Java Developer
Libraries, Frameworks & Software Standards
1 5 (21.74%) HTML5
1 5 (21.74%) HTML
1 5 (21.74%) CSS
2 4 (17.39%) Web Services
2 4 (17.39%) REST
3 3 (13.04%) MCollective
3 3 (13.04%) AngularJS
3 3 (13.04%) Backbone.js
3 3 (13.04%) Spring
3 3 (13.04%) jQuery
3 3 (13.04%) XHTML
4 2 (8.70%) LAMP
4 2 (8.70%) Hibernate
4 2 (8.70%) JPA
4 2 (8.70%) JSON
5 1 (4.35%) beanstalkd
5 1 (4.35%) React
5 1 (4.35%) Sass
5 1 (4.35%) LESS
5 1 (4.35%) Underscore.js
Miscellaneous
1 4 (17.39%) Open Source
2 3 (13.04%) Client/Server
2 3 (13.04%) W3C
3 2 (8.70%) E-Learning
3 2 (8.70%) Digital Media
4 1 (4.35%) Hybrid Cloud
4 1 (4.35%) Public Cloud
4 1 (4.35%) Analytical Skills
4 1 (4.35%) Data Structures
4 1 (4.35%) Interactive TV
4 1 (4.35%) Clustering
Operating Systems
1 19 (82.61%) Linux
2 10 (43.48%) Red Hat Enterprise Linux
3 6 (26.09%) Windows
3 6 (26.09%) Ubuntu
4 4 (17.39%) Windows Server 2008
5 2 (8.70%) VMS
5 2 (8.70%) Windows Server 2012
6 1 (4.35%) UNIX
6 1 (4.35%) Debian
Processes & Methodologies
1 11 (47.83%) Agile Software Development
1 11 (47.83%) DevOps
2 9 (39.13%) Configuration Management
3 6 (26.09%) Continuous Integration
4 3 (13.04%) Root Cause Analysis
4 3 (13.04%) Kanban
4 3 (13.04%) Load Balancing
4 3 (13.04%) Problem Management
4 3 (13.04%) OO
5 2 (8.70%) Change Management
5 2 (8.70%) ITIL
5 2 (8.70%) Performance Testing
5 2 (8.70%) Web Development
5 2 (8.70%) Performance Tuning
5 2 (8.70%) Performance Monitoring
5 2 (8.70%) Server Monitoring
5 2 (8.70%) Kalman Filter
6 1 (4.35%) Continuous Delivery
6 1 (4.35%) Auto-Scaling
6 1 (4.35%) Build Automation
Programming Languages
1 8 (34.78%) Bash Shell
2 7 (30.43%) Ruby
2 7 (30.43%) Java
2 7 (30.43%) Python
3 6 (26.09%) JavaScript
3 6 (26.09%) Perl
4 4 (17.39%) PHP
4 4 (17.39%) SQL
5 2 (8.70%) Shell Script
6 1 (4.35%) PHP5
Qualifications
1 1 (4.35%) DV Cleared
1 1 (4.35%) Security Cleared
Quality Assurance & Compliance
1 1 (4.35%) PCI DSS
1 1 (4.35%) QA
System Software
1 3 (13.04%) VMware Infrastructure
2 2 (8.70%) vSphere
2 2 (8.70%) Docker
3 1 (4.35%) KVM
3 1 (4.35%) vCloud
3 1 (4.35%) VMware ESXi
3 1 (4.35%) FreeRADIUS
3 1 (4.35%) NFS
3 1 (4.35%) Active Directory
Systems Management
1 15 (65.22%) Puppet
2 4 (17.39%) Cobbler
3 3 (13.04%) Opscode Chef
3 3 (13.04%) Ansible
4 2 (8.70%) ZABBIX
4 2 (8.70%) Red Hat Spacewalk
5 1 (4.35%) Vagrant
5 1 (4.35%) Cacti
5 1 (4.35%) Nagios
Vendors
1 12 (52.17%) Red Hat
2 7 (30.43%) VMware
3 2 (8.70%) Microsoft
3 2 (8.70%) EMC
3 2 (8.70%) Rackspace
4 1 (4.35%) Percona
4 1 (4.35%) Facebook
4 1 (4.35%) Twitter
4 1 (4.35%) Zend
4 1 (4.35%) Cisco
4 1 (4.35%) IBM
City, London
Harrington Starr
Rate: £550 per day
Posted: 3 days ago
City, London
Arrows Group
Rate: £350 - £375 per day
Posted: 6 days ago