The following table provides summary statistics for permanent job vacancies advertised in Wales with a requirement for CentOS skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited CentOS over the 3 months to 25 March 2017 with a comparison to the same period in the previous 2 years.

3 months to
25 Mar 2017
Same period 2016 Same period 2015
CentOS Linux
UK / Wales
Rank 87 92 89
Rank change year-on-year +5 -3  
Permanent jobs citing CentOS 13 11 15
As % of all permanent IT jobs advertised in Wales 1.18% 0.79% 1.13%
As % of the Operating Systems category 5.39% 2.81% 3.73%
Number of salaries quoted 11 8 10
Median salary £35,000 £45,000 £37,000
Median salary % change year-on-year -22.22% +21.62%  
90% offered a salary of more than £24,000 £41,500 £33,750
10% offered a salary of more than £42,500 £45,000 £49,450
UK excluding London median salary £45,000 £45,000 £42,500
% change year-on-year - +5.88%  

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

Operating System Skills
Wales
Permanent job vacancies with a requirement for operating system skills 241 391 402
As % of all permanent IT job vacancies advertised in Wales 21.81% 28.15% 30.34%
Number of salaries quoted 211 336 326
Median salary £35,250 £35,000 £37,500
Median salary % change year-on-year +0.71% -6.66%  
90% offered a salary of more than £23,400 £22,500 £23,000
10% offered a salary of more than £45,000 £48,000 £50,000
UK excluding London median salary £37,500 £37,500 £37,500

CentOS
Job Vacancy Trend in Wales

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

Job vacancy trend for CentOS in Wales

CentOS
Salary Trend in Wales

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing CentOS in Wales.

Salary trend for CentOS in Wales

CentOS
Salary Histogram in Wales

The salary distribution of IT jobs citing CentOS in Wales over the 3 months to 25 March 2017.

Salary histogram for CentOS in Wales

CentOS
Job Locations in Wales

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the Wales region over the 3 months to 25 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
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
South Wales +9 10 £25,000 -44.44%
West Wales - 3 £40,000 -
CentOS
UK

CentOS
Top 30 Related IT Skills in Wales

For the 6 months to 25 March 2017, IT jobs citing CentOS also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the Wales region with a requirement for CentOS.

1 25 (100.00%) Linux
2 20 (80.00%) Red Hat
3 12 (48.00%) Debian
4 11 (44.00%) Ubuntu
4 11 (44.00%) Red Hat Enterprise Linux
4 11 (44.00%) Cisco
5 10 (40.00%) Oracle
6 9 (36.00%) Python
7 8 (32.00%) MySQL
7 8 (32.00%) TCP/IP
7 8 (32.00%) VMware
8 7 (28.00%) Firewall
8 7 (28.00%) Windows
8 7 (28.00%) VoIP
9 6 (24.00%) Apache
9 6 (24.00%) Unix
9 6 (24.00%) Amazon AWS
10 5 (20.00%) VMware Infrastructure
10 5 (20.00%) Java
10 5 (20.00%) DNS
10 5 (20.00%) Configuration Management
11 4 (16.00%) RTP
11 4 (16.00%) Telecoms
11 4 (16.00%) MPLS
11 4 (16.00%) AIX
11 4 (16.00%) PBX
11 4 (16.00%) Agile Software Development
11 4 (16.00%) PostgreSQL
11 4 (16.00%) Brocade
11 4 (16.00%) Wireshark

CentOS
Top Related IT Skills in Wales 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 (24.00%) Apache
2 2 (8.00%) JBoss
2 2 (8.00%) OpenStack
2 2 (8.00%) SharePoint
2 2 (8.00%) WebLogic
3 1 (4.00%) Confluence
3 1 (4.00%) IIS
3 1 (4.00%) nginx
3 1 (4.00%) Oracle HTTP Server
3 1 (4.00%) Skype for Business
3 1 (4.00%) Tomcat
Applications
1 3 (12.00%) MS Excel
Cloud Services
1 6 (24.00%) Amazon AWS
2 3 (12.00%) Microsoft Azure
3 2 (8.00%) PaaS
4 1 (4.00%) GitHub
Communications & Networking
1 8 (32.00%) TCP/IP
2 7 (28.00%) Firewall
2 7 (28.00%) VoIP
3 5 (20.00%) DNS
4 4 (16.00%) MPLS
4 4 (16.00%) PBX
4 4 (16.00%) RTP
4 4 (16.00%) Wireshark
5 2 (8.00%) IP Telephony
5 2 (8.00%) iSCSI
5 2 (8.00%) Kerberos
5 2 (8.00%) NAS
5 2 (8.00%) Network Security
5 2 (8.00%) OpenLDAP
5 2 (8.00%) SAN
6 1 (4.00%) BIG-IP
6 1 (4.00%) HTTP
6 1 (4.00%) Unified Communications
Database & Business Intelligence
1 8 (32.00%) MySQL
2 4 (16.00%) PostgreSQL
3 2 (8.00%) Big Data
3 2 (8.00%) Data Mining
3 2 (8.00%) NoSQL
3 2 (8.00%) Oracle Database
4 1 (4.00%) SQL Server
Development Applications
1 1 (4.00%) Atlassian Bamboo
1 1 (4.00%) Bitbucket
1 1 (4.00%) Cucumber
1 1 (4.00%) Jenkins
1 1 (4.00%) JIRA
1 1 (4.00%) JUnit
1 1 (4.00%) TestLink
1 1 (4.00%) VersionOne
General
1 4 (16.00%) Telecoms
2 3 (12.00%) Advertising
2 3 (12.00%) Finance
3 2 (8.00%) Law
3 2 (8.00%) Marketing
4 1 (4.00%) Games
4 1 (4.00%) Legal
Job Titles
1 8 (32.00%) Administrator
2 7 (28.00%) Systems Engineer
3 6 (24.00%) Linux Administrator
4 5 (20.00%) Linux Systems Administrator
5 4 (16.00%) Security Engineer
6 3 (12.00%) Linux Engineer
6 3 (12.00%) Systems Administrator
6 3 (12.00%) Unix Administrator
7 2 (8.00%) DBA
7 2 (8.00%) IT Engineer
7 2 (8.00%) IT Security Engineer
7 2 (8.00%) Linux Systems Engineer
7 2 (8.00%) Network Engineer
7 2 (8.00%) Oracle DBA
7 2 (8.00%) Senior Network Engineer
7 2 (8.00%) VoIP Engineer
8 1 (4.00%) 3rd Line Engineer
8 1 (4.00%) Infrastructure Security Engineer
8 1 (4.00%) Operations Engineer
8 1 (4.00%) Solaris Administrator
Libraries, Frameworks & Software Standards
1 1 (4.00%) LAMP
Miscellaneous
1 2 (8.00%) Analytical Skills
1 2 (8.00%) CMDB
1 2 (8.00%) Hybrid Cloud
1 2 (8.00%) Management Information System
1 2 (8.00%) Public Cloud
2 1 (4.00%) Client/Server
2 1 (4.00%) Clustering
2 1 (4.00%) LPAR
2 1 (4.00%) User Experience
Operating Systems
1 25 (100.00%) Linux
2 12 (48.00%) Debian
3 11 (44.00%) Red Hat Enterprise Linux
3 11 (44.00%) Ubuntu
4 7 (28.00%) Windows
5 6 (24.00%) Unix
6 4 (16.00%) AIX
6 4 (16.00%) Windows Server
7 3 (12.00%) HPUX
7 3 (12.00%) Solaris
7 3 (12.00%) Windows Server 2012
8 1 (4.00%) Android
8 1 (4.00%) Apple iOS
8 1 (4.00%) Gentoo
8 1 (4.00%) Windows Server 2008
Processes & Methodologies
1 5 (20.00%) Configuration Management
2 4 (16.00%) Agile Software Development
2 4 (16.00%) DevOps
2 4 (16.00%) Network Monitoring
3 3 (12.00%) SIEM
4 2 (8.00%) Change Management
4 2 (8.00%) E-Commerce
4 2 (8.00%) High Availability
4 2 (8.00%) ITIL
4 2 (8.00%) Low Latency
4 2 (8.00%) Mobile Marketing
4 2 (8.00%) Security Management
4 2 (8.00%) Security Monitoring
4 2 (8.00%) Service Management
5 1 (4.00%) Load Balancing
5 1 (4.00%) Migration
5 1 (4.00%) Penetration Testing
5 1 (4.00%) Regression Testing
5 1 (4.00%) Service Delivery
5 1 (4.00%) Vulnerability Assessment
Programming Languages
1 9 (36.00%) Python
2 5 (20.00%) Java
3 3 (12.00%) SQL
4 2 (8.00%) Bash Shell
4 2 (8.00%) Perl
5 1 (4.00%) C
5 1 (4.00%) C++
5 1 (4.00%) JavaScript
5 1 (4.00%) Korn
5 1 (4.00%) Objective-C
5 1 (4.00%) PHP
5 1 (4.00%) PowerShell
5 1 (4.00%) R
5 1 (4.00%) Ruby
Qualifications
1 3 (12.00%) DV Cleared
1 3 (12.00%) Security Cleared
2 1 (4.00%) CEH
2 1 (4.00%) CISSP
Quality Assurance & Compliance
1 2 (8.00%) QA
2 1 (4.00%) ISO/IEC 27001
System Software
1 5 (20.00%) VMware Infrastructure
2 3 (12.00%) Active Directory
2 3 (12.00%) vSphere
3 2 (8.00%) NFS
3 2 (8.00%) Squid
4 1 (4.00%) Hyper-V
Systems Management
1 2 (8.00%) Ansible
1 2 (8.00%) NetBackup
1 2 (8.00%) Opscode Chef
1 2 (8.00%) Puppet
2 1 (4.00%) QRadar
2 1 (4.00%) SCCM
2 1 (4.00%) WSUS
Vendors
1 20 (80.00%) Red Hat
2 11 (44.00%) Cisco
3 10 (40.00%) Oracle
4 8 (32.00%) VMware
5 4 (16.00%) Acme Packet
5 4 (16.00%) Brocade
5 4 (16.00%) SonicWALL
6 3 (12.00%) EMC
6 3 (12.00%) IBM
6 3 (12.00%) Microsoft
6 3 (12.00%) Splunk
7 2 (8.00%) Clearswift
7 2 (8.00%) Juniper
7 2 (8.00%) Palo Alto
8 1 (4.00%) AlienVault
8 1 (4.00%) BroadSoft
8 1 (4.00%) F5
8 1 (4.00%) Radware
8 1 (4.00%) Sonus
8 1 (4.00%) Yealink