The following table provides summary statistics for contract job vacancies advertised in the South West 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 27 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
England / South West
3 months to
27 Mar 2017
Same period 2016 Same period 2015
Rank 120 122 115
Rank change year-on-year +2 -7  
Contract jobs citing CentOS 16 18 34
As % of all contract IT jobs advertised in the South West 0.62% 0.62% 1.08%
As % of the Operating Systems category 3.49% 2.74% 5.50%
Number of daily rates quoted 8 10 24
Median daily rate £465 £425 £375
Median daily rate % change year-on-year +9.41% +13.33%  
90% offered a daily rate of more than £385 £310 £283
10% offered a daily rate of more than £558 £525 £450
UK excluding London median daily rate £475 £425 £375
% change year-on-year +11.76% +13.33%  
Number of hourly rates quoted 5 1 0
Median hourly rate £17.50 £8.50 -
Median hourly rate % change year-on-year +105.88% -  
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 the South West with a requirement for operating system skills.

Contract Operating System Skills
South West
Contract job vacancies with a requirement for operating system skills 459 657 618
As % of all contract IT job vacancies advertised in the South West 17.83% 22.64% 19.65%
Number of daily rates quoted 269 394 310
Median daily rate £350 £350 £340
Median daily rate % change year-on-year - +2.94%  
90% offered a daily rate of more than £123 £160 £130
10% offered a daily rate of more than £550 £471 £450
UK excluding London median daily rate £390 £363 £338
% change year-on-year +7.58% +7.40%  
Number of hourly rates quoted 48 73 85
Median hourly rate £16.50 £19.25 £17.00
Median hourly rate % change year-on-year -14.28% +13.23%  
90% offered a hourly rate of more than £11.20 £9.72 £11.00
10% offered a hourly rate of more than £42.90 £46.27 £36.35
UK excluding London median hourly rate £15.25 £16.84 £15.50
% change year-on-year -9.44% +8.64%  

CentOS
Job Vacancy Trend in the South West

The job posting trend of jobs advertised in the South West 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 the South West

CentOS
Contractor Daily Rate Trend in the South West

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

Contractor daily rate trend for CentOS in the South West

CentOS
Contractor Daily Rate Histogram in the South West

The daily rate distribution of IT jobs citing CentOS in the South West over the 3 months to 27 March 2017.

Contractor daily rate histogram for CentOS in the South West

CentOS
Contractor Hourly Rate Trend in the South West

This chart provides the 3-month moving average for hourly rates quoted in IT contractor jobs citing CentOS in the South West.

Contractor hourly rate trend for CentOS in the South West

CentOS
Contract Job Locations in the South West

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the South West region over the 3 months to 27 March 2017. 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 Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Bristol +14 11 £465 +45.31% 8
Gloucestershire +4 1 - - 2
Wiltshire -9 1 - -
CentOS
England

CentOS
Top 30 Co-occurring IT Skills in the South West

For the 6 months to 27 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 South West region with a requirement for CentOS.

1 33 (100.00%) Linux
2 21 (63.64%) Red Hat Enterprise Linux
3 18 (54.55%) DevOps
4 14 (42.42%) Ansible
4 14 (42.42%) Jenkins
4 14 (42.42%) Amazon AWS
4 14 (42.42%) Bash Shell
4 14 (42.42%) Python
4 14 (42.42%) Red Hat
5 13 (39.39%) Java
6 12 (36.36%) Docker
7 10 (30.30%) Oracle
7 10 (30.30%) Agile Software Development
8 9 (27.27%) Ruby
8 9 (27.27%) Ubuntu
9 8 (24.24%) Security Cleared
9 8 (24.24%) Open Source
9 8 (24.24%) Puppet
10 7 (21.21%) Continuous Integration
10 7 (21.21%) JIRA
10 7 (21.21%) Debian
10 7 (21.21%) Unix
10 7 (21.21%) Windows
10 7 (21.21%) Perl
10 7 (21.21%) SQL
10 7 (21.21%) MySQL
10 7 (21.21%) TCP/IP
10 7 (21.21%) SSL
10 7 (21.21%) Configuration Management
11 6 (18.18%) Nagios

CentOS
Co-occurring IT Skills in the South West 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 6 (18.18%) Confluence
2 3 (9.09%) Apache
2 3 (9.09%) Tomcat
3 2 (6.06%) Elasticsearch
3 2 (6.06%) GlassFish
4 1 (3.03%) JBoss
4 1 (3.03%) SharePoint
4 1 (3.03%) WebSphere
Applications
1 1 (3.03%) MS Excel
Business Applications
1 2 (6.06%) SAP Oil and Gas
2 1 (3.03%) IBM Operational Decision Manager
Cloud Services
1 14 (42.42%) Amazon AWS
2 6 (18.18%) Google Cloud Platform
3 5 (15.15%) Amazon EC2
3 5 (15.15%) Amazon ElastiCache
3 5 (15.15%) Amazon S3
3 5 (15.15%) AWS Elastic Beanstalk
3 5 (15.15%) AWS Lambda
3 5 (15.15%) Route 53
3 5 (15.15%) Virtual Private Cloud
4 4 (12.12%) Microsoft Azure
5 3 (9.09%) GitHub
6 1 (3.03%) Cloud Computing
Communications & Networking
1 7 (21.21%) SSL
1 7 (21.21%) TCP/IP
2 6 (18.18%) HTTP
3 4 (12.12%) LDAP
3 4 (12.12%) VPN
4 3 (9.09%) Network Security
4 3 (9.09%) SAN
5 2 (6.06%) Cisco ASA
5 2 (6.06%) DNS
5 2 (6.06%) F5 BIG-IP LTM
5 2 (6.06%) Firewall
5 2 (6.06%) Internet
5 2 (6.06%) IPsec
5 2 (6.06%) LAN
5 2 (6.06%) WAN
6 1 (3.03%) NAS
6 1 (3.03%) SSH
6 1 (3.03%) VoIP
6 1 (3.03%) Wireshark
Database & Business Intelligence
1 7 (21.21%) MySQL
2 6 (18.18%) PostgreSQL
2 6 (18.18%) SQL Server
3 5 (15.15%) Amazon RDS
3 5 (15.15%) Apache Cassandra
4 4 (12.12%) Amazon DynamoDB
4 4 (12.12%) MongoDB
4 4 (12.12%) NoSQL
5 3 (9.09%) Oracle Database
6 2 (6.06%) RDBMS
6 2 (6.06%) Relational Database
7 1 (3.03%) Apache Accumulo
7 1 (3.03%) Big Data
7 1 (3.03%) Hadoop
7 1 (3.03%) Oracle Database 12c
Development Applications
1 14 (42.42%) Jenkins
2 7 (21.21%) JIRA
3 6 (18.18%) Atlassian Bamboo
4 5 (15.15%) Git (software)
4 5 (15.15%) Sonatype Nexus
5 4 (12.12%) Artifactory
5 4 (12.12%) SonarQube
5 4 (12.12%) Subversion
5 4 (12.12%) Vagrant
6 3 (9.09%) Hudson
6 3 (9.09%) Maven
7 2 (6.06%) Bitbucket
7 2 (6.06%) JUnit
8 1 (3.03%) Ant
8 1 (3.03%) CMake
8 1 (3.03%) EasyMock
8 1 (3.03%) Eclipse
General
1 2 (6.06%) Electronics
1 2 (6.06%) Finance
1 2 (6.06%) Manufacturing
1 2 (6.06%) Marketing
1 2 (6.06%) Telecoms
Job Titles
1 10 (30.30%) DevOps Engineer
2 7 (21.21%) Administrator
3 6 (18.18%) Systems Administrator
4 5 (15.15%) Linux Administrator
4 5 (15.15%) Linux Systems Administrator
5 4 (12.12%) Lead DevOps
5 4 (12.12%) Linux Support
6 3 (9.09%) AWS DevOps
6 3 (9.09%) AWS Engineer
6 3 (9.09%) Developer
6 3 (9.09%) IT Support
6 3 (9.09%) Support Officer
7 2 (6.06%) Analyst
7 2 (6.06%) Architect
7 2 (6.06%) Desktop Support
7 2 (6.06%) Desktop Support Analyst
7 2 (6.06%) Support Analyst
7 2 (6.06%) Technical Architect
7 2 (6.06%) Unix Administrator
7 2 (6.06%) Unix Systems Administrator
Libraries, Frameworks & Software Standards
1 5 (15.15%) Elastic Stack
2 3 (9.09%) Middleware
3 2 (6.06%) LAMP
3 2 (6.06%) MCollective
3 2 (6.06%) SAML
4 1 (3.03%) EJB
4 1 (3.03%) Java EE
4 1 (3.03%) JSF
4 1 (3.03%) Oracle Fusion
4 1 (3.03%) Sensu
4 1 (3.03%) Spring
Miscellaneous
1 2 (6.06%) CESG
2 1 (3.03%) Clustering
2 1 (3.03%) Computer Science
2 1 (3.03%) Cyberthreat
2 1 (3.03%) Fat Client
2 1 (3.03%) Linux Command Line
2 1 (3.03%) Thin Client
2 1 (3.03%) Wiki
Operating Systems
1 33 (100.00%) Linux
2 21 (63.64%) Red Hat Enterprise Linux
3 9 (27.27%) Ubuntu
4 7 (21.21%) Debian
4 7 (21.21%) Unix
4 7 (21.21%) Windows
5 4 (12.12%) CoreOS
6 2 (6.06%) Oracle Linux
6 2 (6.06%) Windows Server 2008
6 2 (6.06%) Windows Server 2012
Processes & Methodologies
1 18 (54.55%) DevOps
2 10 (30.30%) Agile Software Development
3 8 (24.24%) Open Source
4 7 (21.21%) Configuration Management
4 7 (21.21%) Continuous Integration
5 5 (15.15%) Auto-Scaling
5 5 (15.15%) Migration
5 5 (15.15%) Scrum
6 4 (12.12%) Load Balancing
7 3 (9.09%) Identity Management
7 3 (9.09%) ITIL
8 2 (6.06%) Build Automation
8 2 (6.06%) Business Intelligence
8 2 (6.06%) Digital Marketing
8 2 (6.06%) OO
8 2 (6.06%) OOD
8 2 (6.06%) Programme Management
8 2 (6.06%) Service Delivery
8 2 (6.06%) Software Engineering
8 2 (6.06%) Web Operations
Programming Languages
1 14 (42.42%) Bash Shell
1 14 (42.42%) Python
2 13 (39.39%) Java
3 9 (27.27%) Ruby
4 7 (21.21%) Perl
4 7 (21.21%) SQL
5 5 (15.15%) PL/SQL
6 4 (12.12%) Shell Script
7 3 (9.09%) PHP
8 2 (6.06%) C++
8 2 (6.06%) JavaScript
9 1 (3.03%) C
Qualifications
1 8 (24.24%) Security Cleared
2 6 (18.18%) SC Cleared
3 2 (6.06%) CESG Certified Professional
3 2 (6.06%) DV Cleared
4 1 (3.03%) BPSS Clearance
4 1 (3.03%) RHCE
4 1 (3.03%) RHCSS
4 1 (3.03%) SANS
Quality Assurance & Compliance
1 3 (9.09%) Disclosure Scotland
2 1 (3.03%) JSP 440
System Software
1 12 (36.36%) Docker
2 6 (18.18%) VMware Infrastructure
3 4 (12.12%) Active Directory
3 4 (12.12%) LXC
3 4 (12.12%) Virtual Machines
3 4 (12.12%) VirtualBox
4 2 (6.06%) Hyper-V
4 2 (6.06%) Shibboleth
4 2 (6.06%) Xen
5 1 (3.03%) GFS2
5 1 (3.03%) Gluster
5 1 (3.03%) OCFS2
5 1 (3.03%) Oracle RAC
Systems Management
1 14 (42.42%) Ansible
2 8 (24.24%) Puppet
3 6 (18.18%) Nagios
4 5 (15.15%) OSSEC
4 5 (15.15%) Terraform
5 2 (6.06%) Bcfg2
5 2 (6.06%) Salt
5 2 (6.06%) vRealize
5 2 (6.06%) ZABBIX
6 1 (3.03%) Graphite
6 1 (3.03%) HAProxy
6 1 (3.03%) Opscode Chef
6 1 (3.03%) SELinux
Vendors
1 14 (42.42%) Red Hat
2 10 (30.30%) Oracle
3 6 (18.18%) VMware
4 5 (15.15%) New Relic
5 3 (9.09%) Google
5 3 (9.09%) Microsoft
5 3 (9.09%) SaltStack
6 2 (6.06%) Cisco
6 2 (6.06%) Dell
6 2 (6.06%) F5
6 2 (6.06%) Gemalto
6 2 (6.06%) HP
6 2 (6.06%) Juniper
6 2 (6.06%) SAP
7 1 (3.03%) ArcSight
7 1 (3.03%) Rackspace
7 1 (3.03%) Sonatype