The following table provides summary statistics for contract job vacancies advertised in Gloucestershire 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 28 March 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 / Gloucestershire
3 months to
28 Mar 2017
Same period 2016 Same period 2015
Rank 46 48 57
Rank change year-on-year +2 +9  
Contract jobs citing CentOS 1 3 2
As % of all contract IT jobs advertised in Gloucestershire 0.30% 0.67% 0.42%
As % of the Operating Systems category 1.15% 2.21% 1.63%
Number of daily rates quoted 0 2 2
Median daily rate - £356 £450
Median daily rate % change year-on-year - -20.83%  
UK excluding London median daily rate £473 £425 £375
% change year-on-year +11.29% +13.33%  
Number of hourly rates quoted 0 1 0
Median hourly rate - £8.50 -
UK excluding London median hourly rate £17.50 £8.50 £47.50
% change year-on-year +105.88% -82.10%  

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 Gloucestershire with a requirement for operating system skills.

Contract Operating System Skills
Gloucestershire
Contract job vacancies with a requirement for operating system skills 87 136 123
As % of all contract IT job vacancies advertised in Gloucestershire 26.20% 30.16% 25.73%
Number of daily rates quoted 46 67 83
Median daily rate £165 £358 £400
Median daily rate % change year-on-year -53.84% -10.62%  
90% offered a daily rate of more than £113 £130 £130
10% offered a daily rate of more than £475 £550 £472
UK excluding London median daily rate £388 £363 £338
% change year-on-year +6.89% +7.40%  
Number of hourly rates quoted 13 15 7
Median hourly rate £14.00 £12.25 £20.00
Median hourly rate % change year-on-year +14.28% -38.75%  
90% offered a hourly rate of more than £12.00 £8.50 £12.01
10% offered a hourly rate of more than £42.00 £44.10 £43.75
UK excluding London median hourly rate £15.25 £16.50 £15.50
% change year-on-year -7.57% +6.45%  

CentOS
Job Vacancy Trend in Gloucestershire

The job posting trend of jobs advertised in Gloucestershire 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 Gloucestershire

CentOS
Contractor Daily Rate Trend in Gloucestershire

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

Contractor daily rate trend for CentOS in Gloucestershire

For the 6 months to 28 March 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 Gloucestershire region with a requirement for CentOS.

1 4 (100.00%) Linux
2 3 (75.00%) Java
2 3 (75.00%) Python
2 3 (75.00%) Scrum
2 3 (75.00%) Agile Software Development
2 3 (75.00%) Security Cleared
2 3 (75.00%) Red Hat Enterprise Linux
2 3 (75.00%) Bash Shell
3 2 (50.00%) Confluence
3 2 (50.00%) DV Cleared
3 2 (50.00%) Open Source
3 2 (50.00%) Bitbucket
3 2 (50.00%) Git (software)
3 2 (50.00%) Atlassian Bamboo
3 2 (50.00%) Software Engineering
3 2 (50.00%) SAP Oil and Gas
3 2 (50.00%) Marketing
3 2 (50.00%) JIRA
3 2 (50.00%) Digital Marketing
3 2 (50.00%) Programme Management
3 2 (50.00%) Electronics
3 2 (50.00%) Telecoms
3 2 (50.00%) Finance
3 2 (50.00%) Manufacturing
3 2 (50.00%) TCP/IP
3 2 (50.00%) Business Intelligence
3 2 (50.00%) Red Hat
3 2 (50.00%) JavaScript
3 2 (50.00%) Perl
3 2 (50.00%) C++

CentOS
Co-occurring IT Skills in Gloucestershire 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 (50.00%) Confluence
2 1 (25.00%) Apache
2 1 (25.00%) Elasticsearch
Business Applications
1 2 (50.00%) SAP Oil and Gas
Communications & Networking
1 2 (50.00%) TCP/IP
2 1 (25.00%) HTTP
2 1 (25.00%) SSH
2 1 (25.00%) VoIP
2 1 (25.00%) Wireshark
Database & Business Intelligence
1 1 (25.00%) Apache Accumulo
1 1 (25.00%) Big Data
1 1 (25.00%) Hadoop
1 1 (25.00%) Oracle Database
1 1 (25.00%) Oracle Database 12c
Development Applications
1 2 (50.00%) Atlassian Bamboo
1 2 (50.00%) Bitbucket
1 2 (50.00%) Git (software)
1 2 (50.00%) Jenkins
1 2 (50.00%) JIRA
1 2 (50.00%) JUnit
2 1 (25.00%) Ant
2 1 (25.00%) CMake
2 1 (25.00%) EasyMock
2 1 (25.00%) Eclipse
2 1 (25.00%) Maven
General
1 2 (50.00%) Electronics
1 2 (50.00%) Finance
1 2 (50.00%) Manufacturing
1 2 (50.00%) Marketing
1 2 (50.00%) Telecoms
Job Titles
1 3 (75.00%) Developer
2 2 (50.00%) Java Developer
3 1 (25.00%) Big Data Developer
3 1 (25.00%) C++ Developer
3 1 (25.00%) DV Cleared Software Engineer
3 1 (25.00%) Java Engineer
3 1 (25.00%) Java Software Engineer
3 1 (25.00%) Linux Developer
3 1 (25.00%) Software Engineer
Libraries, Frameworks & Software Standards
1 1 (25.00%) EJB
1 1 (25.00%) Java EE
1 1 (25.00%) JSF
1 1 (25.00%) Middleware
1 1 (25.00%) Spring
Miscellaneous
1 1 (25.00%) Cyberthreat
1 1 (25.00%) Linux Command Line
1 1 (25.00%) Wiki
Operating Systems
1 4 (100.00%) Linux
2 3 (75.00%) Red Hat Enterprise Linux
3 1 (25.00%) Debian
3 1 (25.00%) Ubuntu
3 1 (25.00%) Unix
Processes & Methodologies
1 3 (75.00%) Agile Software Development
1 3 (75.00%) Scrum
2 2 (50.00%) Business Intelligence
2 2 (50.00%) DevOps
2 2 (50.00%) Digital Marketing
2 2 (50.00%) Open Source
2 2 (50.00%) Programme Management
2 2 (50.00%) Software Engineering
3 1 (25.00%) Continuous Integration
3 1 (25.00%) Cybersecurity
3 1 (25.00%) Issue Tracking
3 1 (25.00%) ITIL
3 1 (25.00%) Kanban
3 1 (25.00%) OO
3 1 (25.00%) OOD
3 1 (25.00%) Service Delivery
3 1 (25.00%) Unit Testing
Programming Languages
1 3 (75.00%) Bash Shell
1 3 (75.00%) Java
1 3 (75.00%) Python
2 2 (50.00%) C++
2 2 (50.00%) JavaScript
2 2 (50.00%) Perl
3 1 (25.00%) C
3 1 (25.00%) PHP
3 1 (25.00%) PL/SQL
3 1 (25.00%) Ruby
3 1 (25.00%) Shell Script
3 1 (25.00%) SQL
Qualifications
1 3 (75.00%) Security Cleared
2 2 (50.00%) DV Cleared
3 1 (25.00%) SC Cleared
Systems Management
1 1 (25.00%) SELinux
Vendors
1 2 (50.00%) Red Hat
1 2 (50.00%) SAP
2 1 (25.00%) Oracle