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 27 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
27 May 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 188 191 199
Rank change year-on-year
+3 +8
Contract jobs citing CentOS 11 8 8
As % of all contract IT jobs located in the City of London 0.20% 0.13% 0.13%
As % of the Operating Systems category 0.98% 0.65% 0.64%
Number of daily rates quoted 11 5 7
Average daily rate
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of your Daily Rate
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£450 £325 £310
Average daily rate % change year-on-year
+38.46% +4.83%
90% offered a daily rate of more than £363 £302 £191
10% offered a daily rate of more than £550 £522 £386
UK excluding London average daily rate £375 £350 £285
% change year-on-year
+7.14% +22.80%
Number of hourly rates quoted 0 0 1
Average hourly rate - - £54.00
UK excluding London average hourly rate - £17.50 £34.00
% change year-on-year
- -48.52%
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
1124 1225 1258
As % of all contract IT jobs located in the City of London 20.30% 20.54% 19.72%
Number of daily rates quoted 855 907 873
Average daily rate £400 £400 £400
90% offered a daily rate of more than £225 £185 £248
10% offered a daily rate of more than £575 £563 £550
UK excluding London average daily rate £350 £315 £325
% change year-on-year
+11.11% -3.07%
Number of hourly rates quoted 51 46 73
Average hourly rate £18.25 £19.00 £28.00
Average hourly rate % change year-on-year
-3.94% -32.14%
90% offered a hourly rate of more than £12.50 £13.00 £13.50
10% offered a hourly rate of more than £23.11 £27.50 £135.00
UK excluding London average hourly rate £16.00 £15.50 £16.20
% change year-on-year
+3.22% -4.32%

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 27 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 27 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 17 (89.47%) Linux
2 14 (73.68%) Puppet
3 11 (57.89%) Bash Shell
4 10 (52.63%) Red Hat Enterprise Linux
4 10 (52.63%) Jenkins
4 10 (52.63%) DevOps
5 9 (47.37%) Python
5 9 (47.37%) Configuration Management
6 8 (42.11%) VMware
7 7 (36.84%) Red Hat
7 7 (36.84%) Git (software)
7 7 (36.84%) Amazon AWS
7 7 (36.84%) Agile Software Development
7 7 (36.84%) Ubuntu
8 6 (31.58%) Ruby
8 6 (31.58%) Perl
8 6 (31.58%) MySQL
9 5 (26.32%) IIS
9 5 (26.32%) Continuous Integration
10 4 (21.05%) Maven
10 4 (21.05%) ZABBIX
10 4 (21.05%) VMware Infrastructure
10 4 (21.05%) Windows
10 4 (21.05%) DNS
11 3 (15.79%) Active Directory
11 3 (15.79%) Apache
11 3 (15.79%) SQL
11 3 (15.79%) Java
11 3 (15.79%) Firewall
11 3 (15.79%) Open Source

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

For the 6 months to 27 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 5 (26.32%) IIS
2 3 (15.79%) Apache
2 3 (15.79%) OpenStack
3 2 (10.53%) Tomcat
4 1 (5.26%) GlassFish
4 1 (5.26%) Jetty
4 1 (5.26%) nginx
4 1 (5.26%) Moodle
4 1 (5.26%) Node.js
4 1 (5.26%) Elasticsearch
Applications
1 1 (5.26%) Photoshop
Cloud Services
1 7 (36.84%) Amazon AWS
2 2 (10.53%) Amazon EC2
3 1 (5.26%) Amazon S3
3 1 (5.26%) SaaS
3 1 (5.26%) PaaS
3 1 (5.26%) Rackspace Cloud
3 1 (5.26%) Route 53
3 1 (5.26%) GitHub
3 1 (5.26%) IaaS
3 1 (5.26%) Amazon ELB
Communications & Networking
1 4 (21.05%) DNS
2 3 (15.79%) Firewall
3 2 (10.53%) LDAP
3 2 (10.53%) LAN
3 2 (10.53%) DHCP
3 2 (10.53%) SAN
3 2 (10.53%) iSCSI
3 2 (10.53%) NAS
4 1 (5.26%) OpenVPN
4 1 (5.26%) PCoIP
4 1 (5.26%) SSL
4 1 (5.26%) SNMP
4 1 (5.26%) VPN
4 1 (5.26%) Wi-Fi
4 1 (5.26%) IPsec
4 1 (5.26%) IMAP
Database & Business Intelligence
1 6 (31.58%) MySQL
2 3 (15.79%) NoSQL
3 2 (10.53%) MongoDB
3 2 (10.53%) Apache Cassandra
3 2 (10.53%) SQL Server
3 2 (10.53%) PostgreSQL
4 1 (5.26%) SQL Server Reporting Services
4 1 (5.26%) SQL Server Integration Services
4 1 (5.26%) SQL Server 2012
Development Applications
1 10 (52.63%) Jenkins
2 7 (36.84%) Git (software)
3 4 (21.05%) Maven
4 3 (15.79%) Subversion
5 1 (5.26%) Ant
5 1 (5.26%) Selenium
5 1 (5.26%) Mercurial
5 1 (5.26%) Hudson
5 1 (5.26%) Gradle
5 1 (5.26%) Grunt
Job Titles
1 6 (31.58%) DevOps Engineer
2 3 (15.79%) Developer
2 3 (15.79%) Analyst
2 3 (15.79%) Linux DevOps Engineer
3 2 (10.53%) Systems Administrator
3 2 (10.53%) Support Analyst
3 2 (10.53%) Applications Support
3 2 (10.53%) Administrator
3 2 (10.53%) Linux Engineer
3 2 (10.53%) Applications Support Analyst
4 1 (5.26%) UNIX Systems Administrator
4 1 (5.26%) UNIX Administrator
4 1 (5.26%) PHP Developer
4 1 (5.26%) Moodle Developer
4 1 (5.26%) Senior DevOps Engineer
4 1 (5.26%) Infrastructure Engineer
4 1 (5.26%) Infrastructure Analyst
4 1 (5.26%) Systems Engineer
4 1 (5.26%) Applications Developer
4 1 (5.26%) Linux Systems Engineer
Libraries, Frameworks & Software Standards
1 3 (15.79%) MCollective
2 2 (10.53%) HTML
2 2 (10.53%) CSS
2 2 (10.53%) Web Services
2 2 (10.53%) HTML5
3 1 (5.26%) REST
3 1 (5.26%) WebSockets
3 1 (5.26%) Backbone.js
3 1 (5.26%) Sass
3 1 (5.26%) LESS
3 1 (5.26%) Underscore.js
3 1 (5.26%) AngularJS
3 1 (5.26%) Twitter Bootstrap
3 1 (5.26%) XHTML
3 1 (5.26%) RSS
3 1 (5.26%) LAMP
3 1 (5.26%) Spring
3 1 (5.26%) Ajax
3 1 (5.26%) Java EE
3 1 (5.26%) jQuery
Miscellaneous
1 2 (10.53%) Client/Server
1 2 (10.53%) Analytical Skills
1 2 (10.53%) Data Centre
2 1 (5.26%) Public Cloud
2 1 (5.26%) W3C
2 1 (5.26%) Thin Client
2 1 (5.26%) Management Information System
2 1 (5.26%) Clustering
2 1 (5.26%) E-Learning
2 1 (5.26%) Freedom of Information
2 1 (5.26%) Freedom of Information Act
2 1 (5.26%) Fat Client
2 1 (5.26%) Digital Media
Operating Systems
1 17 (89.47%) Linux
2 10 (52.63%) Red Hat Enterprise Linux
3 7 (36.84%) Ubuntu
4 4 (21.05%) Windows
5 3 (15.79%) Windows Server 2012
6 2 (10.53%) UNIX
6 2 (10.53%) Windows Server 2008
6 2 (10.53%) Windows 7
6 2 (10.53%) Windows 8
7 1 (5.26%) Solaris
7 1 (5.26%) SUSE
7 1 (5.26%) Debian
Processes & Methodologies
1 10 (52.63%) DevOps
2 9 (47.37%) Configuration Management
3 7 (36.84%) Agile Software Development
4 5 (26.32%) Continuous Integration
5 3 (15.79%) Open Source
5 3 (15.79%) Root Cause Analysis
5 3 (15.79%) Problem Management
6 2 (10.53%) Web Development
6 2 (10.53%) Load Balancing
6 2 (10.53%) Capacity Management
7 1 (5.26%) Build Automation
7 1 (5.26%) Performance Tuning
7 1 (5.26%) Performance Monitoring
7 1 (5.26%) Server Monitoring
7 1 (5.26%) High Availability
7 1 (5.26%) Performance Improvement
7 1 (5.26%) Kanban
7 1 (5.26%) Data Protection
7 1 (5.26%) Kalman Filter
7 1 (5.26%) Auto-Scaling
Programming Languages
1 11 (57.89%) Bash Shell
2 9 (47.37%) Python
3 6 (31.58%) Ruby
3 6 (31.58%) Perl
4 3 (15.79%) Java
4 3 (15.79%) SQL
5 2 (10.53%) JavaScript
5 2 (10.53%) PHP
6 1 (5.26%) PHP5
6 1 (5.26%) Groovy
6 1 (5.26%) Shell Script
Qualifications
1 1 (5.26%) MCSE
1 1 (5.26%) CCNA
1 1 (5.26%) Cisco Certification
1 1 (5.26%) Microsoft Certification
1 1 (5.26%) RHCE
1 1 (5.26%) DV Cleared
1 1 (5.26%) Security Cleared
Quality Assurance & Compliance
1 1 (5.26%) QA
1 1 (5.26%) PCI DSS
System Software
1 4 (21.05%) VMware Infrastructure
2 3 (15.79%) Active Directory
2 3 (15.79%) Docker
3 2 (10.53%) VMware ESXi
4 1 (5.26%) FreeRADIUS
4 1 (5.26%) KVM
4 1 (5.26%) NFS
4 1 (5.26%) Terminal Services
Systems Management
1 14 (73.68%) Puppet
2 4 (21.05%) ZABBIX
3 3 (15.79%) Cobbler
3 3 (15.79%) Opscode Chef
3 3 (15.79%) Ansible
4 1 (5.26%) Kibana
4 1 (5.26%) Vagrant
4 1 (5.26%) Cacti
4 1 (5.26%) Red Hat Spacewalk
4 1 (5.26%) Nagios
Vendors
1 8 (42.11%) VMware
2 7 (36.84%) Red Hat
3 2 (10.53%) Rackspace
3 2 (10.53%) Cisco
3 2 (10.53%) Microsoft
3 2 (10.53%) Dell
4 1 (5.26%) EMC
4 1 (5.26%) Citrix
4 1 (5.26%) Zend
4 1 (5.26%) Facebook
4 1 (5.26%) Twitter
City, London
E-synergy Solutions
Rate: £400 - £450 per day
Posted: 5 days ago
City of London
Templeton and Partners - SAP & UK Account
Rate: £475 - 535 per day
Posted: 6 days ago