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 26 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.

3 months to
26 Mar 2017
Same period 2016 Same period 2015
CentOS Linux
South East / Berkshire
Rank 78 107 129
Rank change year-on-year +29 +22  
Contract jobs citing CentOS 21 19 8
As % of all contract IT jobs advertised in Berkshire 1.16% 0.77% 0.27%
As % of the Operating Systems category 7.66% 3.76% 1.37%
Number of daily rates quoted 19 15 3
Median daily rate £500 £475 £350
Median daily rate % change year-on-year +5.26% +35.71%  
UK excluding London median daily rate £475 £425 £375
% change year-on-year +11.76% +13.33%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
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 Berkshire with a requirement for operating system skills.

Contract Operating System Skills
Berkshire
Contract job vacancies with a requirement for operating system skills 274 505 582
As % of all contract IT job vacancies advertised in Berkshire 15.11% 20.52% 19.84%
Number of daily rates quoted 138 302 294
Median daily rate £400 £363 £350
Median daily rate % change year-on-year +10.34% +3.57%  
90% offered a daily rate of more than £225 £165 £197
10% offered a daily rate of more than £600 £500 £500
UK excluding London median daily rate £390 £363 £338
% change year-on-year +7.58% +7.40%  
Number of hourly rates quoted 24 25 39
Median hourly rate £14.50 £18.00 £16.50
Median hourly rate % change year-on-year -19.44% +9.09%  
90% offered a hourly rate of more than £12.00 £14.00 £13.00
10% offered a hourly rate of more than £52.50 £160.00 £55.65
UK excluding London median hourly rate £15.25 £16.92 £15.50
% change year-on-year -9.86% +9.16%  

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 26 March 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 26 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
Reading +21 17 £500 +11.11% 7
Windsor +3 2 £550 +10.00% 1
Maidenhead - 2 - -
CentOS
South East

CentOS
Top 30 Related IT Skills in Berkshire

For the 6 months to 26 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 Berkshire region with a requirement for CentOS.

1 48 (100.00%) Linux
2 33 (68.75%) Python
3 31 (64.58%) Ubuntu
3 31 (64.58%) Ansible
3 31 (64.58%) DevOps
4 28 (58.33%) Red Hat Enterprise Linux
4 28 (58.33%) Java
5 25 (52.08%) Debian
5 25 (52.08%) Git (software)
6 24 (50.00%) Bash Shell
7 22 (45.83%) Puppet
7 22 (45.83%) SC Cleared
7 22 (45.83%) Security Cleared
7 22 (45.83%) Unix
7 22 (45.83%) Red Hat
8 21 (43.75%) JavaScript
8 21 (43.75%) SSH
8 21 (43.75%) SELinux
8 21 (43.75%) Opscode Chef
9 20 (41.67%) Hadoop
10 18 (37.50%) Prototyping
11 17 (35.42%) HTTP
12 16 (33.33%) TCP/IP
12 16 (33.33%) ICMP
12 16 (33.33%) Linux Command Line
13 15 (31.25%) Jenkins
14 11 (22.92%) VMware
14 11 (22.92%) Open Source
15 10 (20.83%) VMware Infrastructure
16 9 (18.75%) Cisco

CentOS
Top Related 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 7 (14.58%) OpenStack
2 6 (12.50%) Apache
3 5 (10.42%) Confluence
4 4 (8.33%) WebSphere
5 2 (4.17%) IIS
5 2 (4.17%) Jetty
5 2 (4.17%) nginx
5 2 (4.17%) Tomcat
6 1 (2.08%) JBoss
6 1 (2.08%) SAS
Cloud Services
1 7 (14.58%) Amazon AWS
2 6 (12.50%) GitHub
3 4 (8.33%) AWS CloudFormation
3 4 (8.33%) AWS Lambda
4 3 (6.25%) Microsoft Azure
Communications & Networking
1 21 (43.75%) SSH
2 17 (35.42%) HTTP
3 16 (33.33%) ICMP
3 16 (33.33%) TCP/IP
4 8 (16.67%) Firewall
5 3 (6.25%) LDAP
6 1 (2.08%) DHCP
6 1 (2.08%) DNS
6 1 (2.08%) Fibre Channel
6 1 (2.08%) IMAP
6 1 (2.08%) iSCSI
6 1 (2.08%) MRTG
6 1 (2.08%) SMTP
6 1 (2.08%) Software-Defined Networking
Database & Business Intelligence
1 20 (41.67%) Hadoop
2 6 (12.50%) Big Data
3 4 (8.33%) Amazon DynamoDB
4 1 (2.08%) MySQL
4 1 (2.08%) RDBMS
4 1 (2.08%) Relational Database
Development Applications
1 25 (52.08%) Git (software)
2 15 (31.25%) Jenkins
3 7 (14.58%) Hudson
4 6 (12.50%) Subversion
5 5 (10.42%) JIRA
5 5 (10.42%) Vagrant
6 4 (8.33%) Bitbucket
7 2 (4.17%) Eclipse
7 2 (4.17%) TeamCity
7 2 (4.17%) Visual Studio
General
1 2 (4.17%) Telecoms
2 1 (2.08%) Manufacturing
2 1 (2.08%) Retail
Job Titles
1 20 (41.67%) Developer
2 15 (31.25%) DevOps Engineer
3 13 (27.08%) Administrator
3 13 (27.08%) Linux Administrator
3 13 (27.08%) Linux Systems Administrator
3 13 (27.08%) Systems Administrator
4 11 (22.92%) Linux/Unix DevOps
5 10 (20.83%) Java Developer
5 10 (20.83%) JavaScript Developer
5 10 (20.83%) Python Developer
6 9 (18.75%) Consultant
6 9 (18.75%) DevOps Consultant
6 9 (18.75%) Java Consultant
6 9 (18.75%) Java Engineer
6 9 (18.75%) JavaScript Engineer
7 8 (16.67%) VMWare Administrator
8 7 (14.58%) Open Source Developer
9 5 (10.42%) AWS DevOps
9 5 (10.42%) DevOps Administrator
9 5 (10.42%) Linux DevOps Administrator
Libraries, Frameworks & Software Standards
1 3 (6.25%) CGI
2 2 (4.17%) .NET
3 1 (2.08%) LAMP
3 1 (2.08%) LEMP Stack
3 1 (2.08%) Web Services
Miscellaneous
1 16 (33.33%) Linux Command Line
2 4 (8.33%) Private Cloud
3 2 (4.17%) Computer Science
4 1 (2.08%) Data Centre
Operating Systems
1 48 (100.00%) Linux
2 31 (64.58%) Ubuntu
3 28 (58.33%) Red Hat Enterprise Linux
4 25 (52.08%) Debian
5 22 (45.83%) Unix
6 4 (8.33%) Windows
7 1 (2.08%) Mac OS
7 1 (2.08%) Solaris
Processes & Methodologies
1 31 (64.58%) DevOps
2 18 (37.50%) Prototyping
3 11 (22.92%) Open Source
4 8 (16.67%) Data Management
5 6 (12.50%) Configuration Management
5 6 (12.50%) Open Source Development
6 5 (10.42%) Continuous Integration
7 3 (6.25%) Application Performance Management
7 3 (6.25%) Performance Management
8 2 (4.17%) Process Improvement
8 2 (4.17%) Project Management
8 2 (4.17%) Stakeholder and Relationship Management
8 2 (4.17%) Stakeholder Management
8 2 (4.17%) Time Management
9 1 (2.08%) Cybersecurity
Programming Languages
1 33 (68.75%) Python
2 28 (58.33%) Java
3 24 (50.00%) Bash Shell
4 21 (43.75%) JavaScript
5 9 (18.75%) Ruby
6 2 (4.17%) C#
6 2 (4.17%) Perl
6 2 (4.17%) PHP
7 1 (2.08%) C
7 1 (2.08%) Korn
7 1 (2.08%) Shell Script
Qualifications
1 22 (45.83%) SC Cleared
1 22 (45.83%) Security Cleared
2 8 (16.67%) CCNA
2 8 (16.67%) CCNP
2 8 (16.67%) Cisco Certification
3 2 (4.17%) CISA
3 2 (4.17%) Degree
System Software
1 10 (20.83%) VMware Infrastructure
2 8 (16.67%) Docker
3 2 (4.17%) Active Directory
3 2 (4.17%) KVM
4 1 (2.08%) Ceph
4 1 (2.08%) Dovecot
4 1 (2.08%) iptables
4 1 (2.08%) Sendmail
4 1 (2.08%) Squid
4 1 (2.08%) vCloud
4 1 (2.08%) VMware ESXi
Systems Management
1 31 (64.58%) Ansible
2 22 (45.83%) Puppet
3 21 (43.75%) Opscode Chef
3 21 (43.75%) SELinux
4 9 (18.75%) Nagios
5 6 (12.50%) Terraform
6 5 (10.42%) Pingdom
7 3 (6.25%) Consul
8 1 (2.08%) Cacti
8 1 (2.08%) HAProxy
8 1 (2.08%) Oracle ZFS
8 1 (2.08%) RANCID
Vendors
1 22 (45.83%) Red Hat
2 11 (22.92%) VMware
3 9 (18.75%) Cisco
4 8 (16.67%) EMC
5 6 (12.50%) AppDynamics
6 5 (10.42%) Atlassian
6 5 (10.42%) PagerDuty
7 1 (2.08%) New Relic
7 1 (2.08%) Oracle