The following table provides summary statistics for contract job vacancies advertised in Berkshire 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 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 East / Berkshire
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank 84 119 112
Rank change year-on-year +35 -7  
Contract jobs citing CentOS 21 6 6
As % of all contract IT jobs advertised in Berkshire 1.15% 0.25% 0.25%
As % of the Operating Systems category 7.53% 1.28% 1.27%
Number of daily rates quoted 17 6 4
Median daily rate £550 £450 £355
Median daily rate % change year-on-year +22.22% +26.76%  
90% offered a daily rate of more than £354 £450 £318
10% offered a daily rate of more than £575 £498 £456
UK excluding London median daily rate £460 £425 £355
% change year-on-year +8.23% +19.71%  
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 Berkshire with a requirement for operating system skills.

Contract Operating System Skills
Berkshire
Contract job vacancies with a requirement for operating system skills 279 469 474
As % of all contract IT job vacancies advertised in Berkshire 15.26% 19.70% 19.69%
Number of daily rates quoted 153 262 229
Median daily rate £367 £375 £400
Median daily rate % change year-on-year -2.26% -6.25%  
90% offered a daily rate of more than £130 £205 £210
10% offered a daily rate of more than £550 £525 £495
UK excluding London median daily rate £375 £363 £350
% change year-on-year +3.44% +3.57%  
Number of hourly rates quoted 22 35 55
Median hourly rate £12.50 £17.50 £19.50
Median hourly rate % change year-on-year -28.57% -10.25%  
90% offered a hourly rate of more than £12.00 £12.50 £14.00
10% offered a hourly rate of more than £43.13 £43.28 £35.00
UK excluding London median hourly rate £15.50 £17.50 £16.50
% change year-on-year -11.42% +6.06%  

CentOS
Job Vacancy Trend in Berkshire

The job posting trend of jobs advertised in Berkshire 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 Berkshire

CentOS
Contractor Daily Rate Trend in Berkshire

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

Contractor daily rate trend for CentOS in Berkshire

CentOS
Contractor Daily Rate Histogram in Berkshire

The daily rate distribution of IT jobs citing CentOS in Berkshire over the 3 months to 28 June 2017.

Contractor daily rate histogram for CentOS in Berkshire

CentOS
Contract Job Locations in Berkshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the Berkshire region over the 3 months to 28 June 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
Slough +14 8 £550 +15.78% 2
Windsor +3 7 £575 +10.57%
Reading - 3 £390 - 5
Maidenhead - 2 £350 -
Newbury - 1 £335 - 2
CentOS
South East

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

1 41 (100.00%) Linux
2 32 (78.05%) Python
3 30 (73.17%) DevOps
4 22 (53.66%) Java
4 22 (53.66%) Red Hat Enterprise Linux
5 21 (51.22%) Ansible
6 20 (48.78%) Red Hat
7 18 (43.90%) JavaScript
7 18 (43.90%) Git (software)
7 18 (43.90%) Bash Shell
8 16 (39.02%) Puppet
8 16 (39.02%) Debian
8 16 (39.02%) VMware
9 15 (36.59%) Ubuntu
9 15 (36.59%) Unix
10 14 (34.15%) SSH
10 14 (34.15%) SC Cleared
10 14 (34.15%) Security Cleared
10 14 (34.15%) SELinux
11 13 (31.71%) Opscode Chef
11 13 (31.71%) Hadoop
11 13 (31.71%) Nagios
12 11 (26.83%) ICMP
12 11 (26.83%) EMC
12 11 (26.83%) HTTP
12 11 (26.83%) TCP/IP
12 11 (26.83%) VMware Infrastructure
12 11 (26.83%) Prototyping
13 10 (24.39%) Linux Command Line
14 9 (21.95%) Open Source

CentOS
Co-occurring IT Skills in Berkshire 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 5 (12.20%) IIS
2 3 (7.32%) Apache
2 3 (7.32%) MS Exchange
3 2 (4.88%) Jetty
3 2 (4.88%) Skype for Business
3 2 (4.88%) Tomcat
4 1 (2.44%) IBM Domino
4 1 (2.44%) OpenStack
Applications
1 2 (4.88%) Microsoft Excel
Cloud Services
1 4 (9.76%) Cloud Computing
2 3 (7.32%) GitHub
2 3 (7.32%) Microsoft Azure
3 2 (4.88%) Amazon AWS
4 1 (2.44%) Amazon EC2
4 1 (2.44%) Amazon S3
Communications & Networking
1 14 (34.15%) SSH
2 11 (26.83%) HTTP
2 11 (26.83%) ICMP
2 11 (26.83%) TCP/IP
3 5 (12.20%) Firewall
4 4 (9.76%) Cisco Nexus
4 4 (9.76%) Internet
4 4 (9.76%) VPN
5 2 (4.88%) LDAP
5 2 (4.88%) Skype
6 1 (2.44%) DNS
Database & Business Intelligence
1 13 (31.71%) Hadoop
2 5 (12.20%) Big Data
2 5 (12.20%) MySQL
3 4 (9.76%) MongoDB
4 2 (4.88%) SQL Server
4 2 (4.88%) SQL Server 2008
4 2 (4.88%) SQL Server 2016
5 1 (2.44%) Amazon DynamoDB
Development Applications
1 18 (43.90%) Git (software)
2 5 (12.20%) Jenkins
3 4 (9.76%) Sonatype Nexus
4 3 (7.32%) Hudson
4 3 (7.32%) Subversion
5 2 (4.88%) Ant
5 2 (4.88%) Eclipse
5 2 (4.88%) Maven
5 2 (4.88%) MSBuild
5 2 (4.88%) Team Foundation Server
5 2 (4.88%) Visual Studio
6 1 (2.44%) Selenium
General
1 7 (17.07%) Telecoms
Job Titles
1 13 (31.71%) Developer
1 13 (31.71%) DevOps Engineer
2 10 (24.39%) DevOps Developer
3 9 (21.95%) Administrator
3 9 (21.95%) Linux Administrator
3 9 (21.95%) Linux Systems Administrator
3 9 (21.95%) Linux/Unix DevOps
4 8 (19.51%) Linux Engineer
5 7 (17.07%) Senior DevOps
5 7 (17.07%) Senior Linux Administrator
5 7 (17.07%) Senior Linux Engineer
5 7 (17.07%) Senior Linux Systems Administrator
5 7 (17.07%) Senior Systems Administrator
6 6 (14.63%) Linux Systems Engineer
6 6 (14.63%) Open Source Developer
6 6 (14.63%) Senior Linux Systems Engineer
6 6 (14.63%) Senior Systems Engineer
6 6 (14.63%) Systems Engineer
6 6 (14.63%) VMWare Administrator
7 5 (12.20%) JavaScript Engineer
Libraries, Frameworks & Software Standards
1 5 (12.20%) LAMP
2 4 (9.76%) .NET
2 4 (9.76%) Sensu
2 4 (9.76%) Web Services
3 3 (7.32%) CGI
4 2 (4.88%) OAuth
4 2 (4.88%) RESTful
Miscellaneous
1 10 (24.39%) Linux Command Line
2 5 (12.20%) EMC VNX
3 2 (4.88%) Computer Science
4 1 (2.44%) Enterprise Cloud
4 1 (2.44%) Hybrid Cloud
4 1 (2.44%) N-Tier
4 1 (2.44%) Private Cloud
Operating Systems
1 41 (100.00%) Linux
2 22 (53.66%) Red Hat Enterprise Linux
3 16 (39.02%) Debian
4 15 (36.59%) Ubuntu
4 15 (36.59%) Unix
5 5 (12.20%) Windows
6 3 (7.32%) Windows Server
7 1 (2.44%) Amazon Linux
7 1 (2.44%) Solaris
7 1 (2.44%) SUSE
7 1 (2.44%) Windows Server 2003
7 1 (2.44%) Windows Server 2008
7 1 (2.44%) Windows Server 2012
Processes & Methodologies
1 30 (73.17%) DevOps
2 11 (26.83%) Prototyping
3 9 (21.95%) Data Management
3 9 (21.95%) Open Source
4 7 (17.07%) ITIL
5 6 (14.63%) Open Source Development
6 4 (9.76%) Configuration Management
7 3 (7.32%) Agile Software Development
7 3 (7.32%) Continuous Integration
7 3 (7.32%) ITIL V3
8 2 (4.88%) Continuous Deployment
8 2 (4.88%) Load Balancing
8 2 (4.88%) Patch Management
8 2 (4.88%) Performance Testing
8 2 (4.88%) Process Improvement
8 2 (4.88%) Project Management
8 2 (4.88%) Scrum
8 2 (4.88%) Stakeholder and Relationship Management
8 2 (4.88%) Stakeholder Management
8 2 (4.88%) Time Management
Programming Languages
1 32 (78.05%) Python
2 22 (53.66%) Java
3 18 (43.90%) Bash Shell
3 18 (43.90%) JavaScript
4 9 (21.95%) Perl
5 6 (14.63%) Ruby
6 4 (9.76%) C#
7 3 (7.32%) PHP
7 3 (7.32%) PowerShell
8 1 (2.44%) SQL
Qualifications
1 14 (34.15%) SC Cleared
1 14 (34.15%) Security Cleared
2 9 (21.95%) CCNA
2 9 (21.95%) CCNP
2 9 (21.95%) Cisco Certification
3 4 (9.76%) RHCE
3 4 (9.76%) RHCSA
3 4 (9.76%) VMware Certified Professional (VCP)
4 2 (4.88%) CISA
4 2 (4.88%) Computer Science Degree
4 2 (4.88%) Degree
System Software
1 11 (26.83%) VMware Infrastructure
2 6 (14.63%) VMware ESXi
3 4 (9.76%) vSphere
4 2 (4.88%) Active Directory
4 2 (4.88%) Docker
5 1 (2.44%) Hyper-V
5 1 (2.44%) vCloud
Systems Management
1 21 (51.22%) Ansible
2 16 (39.02%) Puppet
3 14 (34.15%) SELinux
4 13 (31.71%) Nagios
4 13 (31.71%) Opscode Chef
5 4 (9.76%) vCenter Server
5 4 (9.76%) ZABBIX
6 1 (2.44%) CFEngine
6 1 (2.44%) Cobbler
6 1 (2.44%) Red Hat Spacewalk
6 1 (2.44%) SCCM
6 1 (2.44%) SCOM
6 1 (2.44%) SCOrch
6 1 (2.44%) SCVMM
6 1 (2.44%) Terraform
6 1 (2.44%) Unicenter
6 1 (2.44%) vRealize
Vendors
1 20 (48.78%) Red Hat
2 16 (39.02%) VMware
3 11 (26.83%) EMC
4 9 (21.95%) Cisco
5 3 (7.32%) Microsoft
6 1 (2.44%) 3PAR
6 1 (2.44%) CA
6 1 (2.44%) Dell
6 1 (2.44%) HP
6 1 (2.44%) IBM
6 1 (2.44%) Infoblox
6 1 (2.44%) Lotus
6 1 (2.44%) NetApp
6 1 (2.44%) Nimsoft
6 1 (2.44%) Sun
6 1 (2.44%) SunGard