The following table provides summary statistics for contract job vacancies advertised in Wiltshire with a requirement for CentOS skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited CentOS over the 3 months to 24 June 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

CentOS Linux
South West / Wiltshire
3 months to
24 Jun 2017
Same period 2016 Same period 2015
Rank 61 63 58
Rank change year-on-year +2 -5  
Contract jobs citing CentOS 1 3 1
As % of all contract IT jobs advertised in Wiltshire 0.15% 0.46% 0.16%
As % of the Operating Systems category 1.25% 1.97% 0.88%
Number of daily rates quoted 0 0 1
Median daily rate - - £425
UK excluding London median daily rate £460 £425 £375
% change year-on-year +8.23% +13.33%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £47.50 £55.00 -
% change year-on-year -13.63% -  

CentOS is in the operating system skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Wiltshire with a requirement for operating system skills.

Contract Operating System Skills
Wiltshire
Contract job vacancies with a requirement for operating system skills 80 152 113
As % of all contract IT job vacancies advertised in Wiltshire 12.14% 23.21% 17.82%
Number of daily rates quoted 55 99 46
Median daily rate £330 £375 £350
Median daily rate % change year-on-year -12.00% +7.14%  
90% offered a daily rate of more than £150 £140 £170
10% offered a daily rate of more than £550 £590 £500
UK excluding London median daily rate £375 £363 £348
% change year-on-year +3.44% +4.31%  
Number of hourly rates quoted 3 3 26
Median hourly rate £42.00 £16.50 £20.19
Median hourly rate % change year-on-year +154.54% -18.25%  
UK excluding London median hourly rate £15.50 £17.00 £16.20
% change year-on-year -8.82% +4.93%  

CentOS
Job Vacancy Trend in Wiltshire

The job posting trend of jobs advertised in Wiltshire citing CentOS as a proportion of all contract or permanent IT jobs with a match in the Operating Systems category.

Job vacancy trend for CentOS in Wiltshire

CentOS
Contractor Daily Rate Trend in Wiltshire

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing CentOS in Wiltshire.

Contractor daily rate trend for CentOS in Wiltshire

For the 6 months to 24 June 2017, IT contractor jobs citing CentOS also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Wiltshire region with a requirement for CentOS.

1 2 (100.00%) Red Hat
1 2 (100.00%) Linux
1 2 (100.00%) Apache
2 1 (50.00%) Tomcat
2 1 (50.00%) LDAP
2 1 (50.00%) SharePoint
2 1 (50.00%) LAN
2 1 (50.00%) WAN
2 1 (50.00%) DNS
2 1 (50.00%) RDBMS
2 1 (50.00%) Cisco
2 1 (50.00%) Microsoft
2 1 (50.00%) Active Directory
2 1 (50.00%) HP
2 1 (50.00%) Dell
2 1 (50.00%) Juniper
2 1 (50.00%) SAN
2 1 (50.00%) Java
2 1 (50.00%) Perl
2 1 (50.00%) PHP
2 1 (50.00%) MySQL
2 1 (50.00%) Oracle
2 1 (50.00%) SQL Server
2 1 (50.00%) ITIL
2 1 (50.00%) PRINCE2
2 1 (50.00%) Unix
2 1 (50.00%) Windows
2 1 (50.00%) Solaris
2 1 (50.00%) SAML
2 1 (50.00%) Internet

CentOS
Co-occurring IT Skills in Wiltshire by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 2 (100.00%) Apache
2 1 (50.00%) GlassFish
2 1 (50.00%) SharePoint
2 1 (50.00%) Tomcat
Cloud Services
1 1 (50.00%) Microsoft Azure
Communications & Networking
1 1 (50.00%) Cisco ASA
1 1 (50.00%) DNS
1 1 (50.00%) F5 BIG-IP LTM
1 1 (50.00%) Firewall
1 1 (50.00%) Internet
1 1 (50.00%) LAN
1 1 (50.00%) LDAP
1 1 (50.00%) SAN
1 1 (50.00%) WAN
Database & Business Intelligence
1 1 (50.00%) MySQL
1 1 (50.00%) Oracle Database
1 1 (50.00%) RDBMS
1 1 (50.00%) Relational Database
1 1 (50.00%) SQL Server
Job Titles
1 1 (50.00%) Administrator
1 1 (50.00%) Infrastructure Engineer
1 1 (50.00%) Linux Administrator
1 1 (50.00%) Linux Systems Administrator
1 1 (50.00%) Senior Infrastructure Engineer
Libraries, Frameworks & Software Standards
1 1 (50.00%) LAMP
1 1 (50.00%) SAML
Operating Systems
1 2 (100.00%) Linux
2 1 (50.00%) Solaris
2 1 (50.00%) Ubuntu
2 1 (50.00%) Unix
2 1 (50.00%) Windows
2 1 (50.00%) Windows Server 2008
2 1 (50.00%) Windows Server 2012
Processes & Methodologies
1 1 (50.00%) Agile Software Development
1 1 (50.00%) DevOps
1 1 (50.00%) Identity Management
1 1 (50.00%) ITIL
1 1 (50.00%) ITIL V3
1 1 (50.00%) Open Source
1 1 (50.00%) PRINCE2
Programming Languages
1 1 (50.00%) Java
1 1 (50.00%) Perl
1 1 (50.00%) PHP
Qualifications
1 1 (50.00%) SANS
1 1 (50.00%) SC Cleared
1 1 (50.00%) Security Cleared
System Software
1 1 (50.00%) Active Directory
1 1 (50.00%) Shibboleth
1 1 (50.00%) VMware Infrastructure
Systems Management
1 1 (50.00%) Red Hat Satellite
Vendors
1 2 (100.00%) Red Hat
2 1 (50.00%) ArcSight
2 1 (50.00%) Cisco
2 1 (50.00%) Dell
2 1 (50.00%) F5
2 1 (50.00%) Gemalto
2 1 (50.00%) HP
2 1 (50.00%) Juniper
2 1 (50.00%) Microsoft
2 1 (50.00%) Oracle
2 1 (50.00%) Rackspace
2 1 (50.00%) VMware