The following table provides summary statistics for permanent job vacancies advertised in South 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 26 March 2017 with a comparison to the same period in the previous 2 years.

3 months to
26 Mar 2017
Same period 2016 Same period 2015
CentOS Linux
Wales / South Wales
Rank 78 88 87
Rank change year-on-year +10 -1  
Permanent jobs citing CentOS 10 11 16
As % of all permanent IT jobs advertised in South Wales 1.16% 0.89% 1.36%
As % of the Operating Systems category 5.05% 3.03% 4.13%
Number of salaries quoted 8 8 11
Median salary £25,000 £45,000 £37,000
Median salary % change year-on-year -44.44% +21.62%  
90% offered a salary of more than £23,400 £41,500 £33,750
10% offered a salary of more than £46,000 £45,000 £49,000
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 South Wales with a requirement for operating system skills.

Operating System Skills
South Wales
Permanent job vacancies with a requirement for operating system skills 198 363 387
As % of all permanent IT job vacancies advertised in South Wales 23.02% 29.44% 32.85%
Number of salaries quoted 173 322 323
Median salary £35,000 £35,000 £37,500
Median salary % change year-on-year - -6.66%  
90% offered a salary of more than £23,500 £22,500 £24,000
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 South Wales

The job posting trend of jobs advertised in South 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 South Wales

CentOS
Salary Trend in South Wales

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

Salary trend for CentOS in South Wales

CentOS
Salary Histogram in South Wales

The salary distribution of IT jobs citing CentOS in South Wales over the 3 months to 26 March 2017.

Salary histogram for CentOS in South Wales

CentOS
Job Locations in South Wales

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the South Wales 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
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Cardiff - 8 £25,000 -
Torfaen +9 1 £22,000 -51.11%
Bridgend - 1 £40,000 -
CentOS
Wales

CentOS
Top 30 Related IT Skills in South Wales

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

1 22 (100.00%) Linux
2 20 (90.91%) Red Hat
3 12 (54.55%) Debian
4 11 (50.00%) Ubuntu
4 11 (50.00%) Red Hat Enterprise Linux
5 10 (45.45%) Oracle
6 9 (40.91%) Cisco
7 8 (36.36%) MySQL
8 7 (31.82%) VoIP
9 6 (27.27%) TCP/IP
9 6 (27.27%) Apache
9 6 (27.27%) Python
9 6 (27.27%) Unix
9 6 (27.27%) Amazon AWS
10 5 (22.73%) VMware
10 5 (22.73%) VMware Infrastructure
10 5 (22.73%) Java
10 5 (22.73%) Configuration Management
10 5 (22.73%) Firewall
11 4 (18.18%) Telecoms
11 4 (18.18%) PostgreSQL
11 4 (18.18%) RTP
11 4 (18.18%) MPLS
11 4 (18.18%) Windows
11 4 (18.18%) AIX
11 4 (18.18%) SonicWALL
11 4 (18.18%) PBX
11 4 (18.18%) Agile Software Development
11 4 (18.18%) Brocade
11 4 (18.18%) Wireshark

CentOS
Top Related IT Skills in South 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 (27.27%) Apache
2 2 (9.09%) JBoss
2 2 (9.09%) OpenStack
2 2 (9.09%) SharePoint
2 2 (9.09%) WebLogic
3 1 (4.55%) Confluence
3 1 (4.55%) IIS
3 1 (4.55%) nginx
3 1 (4.55%) Oracle HTTP Server
3 1 (4.55%) Skype for Business
3 1 (4.55%) Tomcat
Applications
1 3 (13.64%) MS Excel
Cloud Services
1 6 (27.27%) Amazon AWS
2 3 (13.64%) Microsoft Azure
3 2 (9.09%) PaaS
4 1 (4.55%) GitHub
Communications & Networking
1 7 (31.82%) VoIP
2 6 (27.27%) TCP/IP
3 5 (22.73%) Firewall
4 4 (18.18%) MPLS
4 4 (18.18%) PBX
4 4 (18.18%) RTP
4 4 (18.18%) Wireshark
5 3 (13.64%) DNS
6 2 (9.09%) IP Telephony
6 2 (9.09%) iSCSI
6 2 (9.09%) Kerberos
6 2 (9.09%) NAS
6 2 (9.09%) Network Security
6 2 (9.09%) OpenLDAP
6 2 (9.09%) SAN
7 1 (4.55%) BIG-IP
7 1 (4.55%) HTTP
7 1 (4.55%) Unified Communications
Database & Business Intelligence
1 8 (36.36%) MySQL
2 4 (18.18%) PostgreSQL
3 2 (9.09%) Big Data
3 2 (9.09%) Data Mining
3 2 (9.09%) NoSQL
3 2 (9.09%) Oracle Database
4 1 (4.55%) SQL Server
Development Applications
1 1 (4.55%) Atlassian Bamboo
1 1 (4.55%) Bitbucket
1 1 (4.55%) Cucumber
1 1 (4.55%) Jenkins
1 1 (4.55%) JIRA
1 1 (4.55%) JUnit
1 1 (4.55%) TestLink
1 1 (4.55%) VersionOne
General
1 4 (18.18%) Telecoms
2 3 (13.64%) Advertising
3 2 (9.09%) Law
3 2 (9.09%) Marketing
4 1 (4.55%) Finance
4 1 (4.55%) Games
4 1 (4.55%) Legal
Job Titles
1 8 (36.36%) Administrator
2 7 (31.82%) Systems Engineer
3 6 (27.27%) Linux Administrator
4 5 (22.73%) Linux Systems Administrator
5 3 (13.64%) Linux Engineer
5 3 (13.64%) Systems Administrator
5 3 (13.64%) Unix Administrator
6 2 (9.09%) DBA
6 2 (9.09%) Linux Systems Engineer
6 2 (9.09%) Network Engineer
6 2 (9.09%) Oracle DBA
6 2 (9.09%) Senior Network Engineer
6 2 (9.09%) VoIP Engineer
7 1 (4.55%) 3rd Line Engineer
7 1 (4.55%) AIX Administrator
7 1 (4.55%) Infrastructure Security Engineer
7 1 (4.55%) Junior Systems Engineer
7 1 (4.55%) Operations Engineer
7 1 (4.55%) Security Engineer
7 1 (4.55%) Solaris Administrator
Libraries, Frameworks & Software Standards
1 1 (4.55%) LAMP
Miscellaneous
1 2 (9.09%) Analytical Skills
1 2 (9.09%) CMDB
1 2 (9.09%) Hybrid Cloud
1 2 (9.09%) Management Information System
1 2 (9.09%) Public Cloud
2 1 (4.55%) Client/Server
2 1 (4.55%) Clustering
2 1 (4.55%) LPAR
2 1 (4.55%) User Experience
Operating Systems
1 22 (100.00%) Linux
2 12 (54.55%) Debian
3 11 (50.00%) Red Hat Enterprise Linux
3 11 (50.00%) Ubuntu
4 6 (27.27%) Unix
5 4 (18.18%) AIX
5 4 (18.18%) Windows
6 3 (13.64%) HPUX
6 3 (13.64%) Solaris
7 1 (4.55%) Android
7 1 (4.55%) Apple iOS
7 1 (4.55%) Gentoo
7 1 (4.55%) Windows Server
7 1 (4.55%) Windows Server 2008
Processes & Methodologies
1 5 (22.73%) Configuration Management
2 4 (18.18%) Agile Software Development
2 4 (18.18%) DevOps
2 4 (18.18%) Network Monitoring
3 2 (9.09%) Change Management
3 2 (9.09%) E-Commerce
3 2 (9.09%) High Availability
3 2 (9.09%) ITIL
3 2 (9.09%) Low Latency
3 2 (9.09%) Mobile Marketing
3 2 (9.09%) Security Management
3 2 (9.09%) Service Management
4 1 (4.55%) Bug Management
4 1 (4.55%) Continuous Integration
4 1 (4.55%) Load Balancing
4 1 (4.55%) Migration
4 1 (4.55%) Regression Testing
4 1 (4.55%) Service Delivery
4 1 (4.55%) Test Management
4 1 (4.55%) Vulnerability Assessment
Programming Languages
1 6 (27.27%) Python
2 5 (22.73%) Java
3 3 (13.64%) SQL
4 2 (9.09%) Bash Shell
4 2 (9.09%) Perl
5 1 (4.55%) C
5 1 (4.55%) C++
5 1 (4.55%) JavaScript
5 1 (4.55%) Korn
5 1 (4.55%) Objective-C
5 1 (4.55%) PHP
5 1 (4.55%) PowerShell
5 1 (4.55%) R
5 1 (4.55%) Ruby
Qualifications
1 3 (13.64%) DV Cleared
1 3 (13.64%) Security Cleared
Quality Assurance & Compliance
1 2 (9.09%) QA
System Software
1 5 (22.73%) VMware Infrastructure
2 2 (9.09%) NFS
2 2 (9.09%) Squid
3 1 (4.55%) Active Directory
3 1 (4.55%) Hyper-V
3 1 (4.55%) vSphere
Systems Management
1 2 (9.09%) Ansible
1 2 (9.09%) NetBackup
1 2 (9.09%) Opscode Chef
1 2 (9.09%) Puppet
2 1 (4.55%) SCCM
2 1 (4.55%) WSUS
Vendors
1 20 (90.91%) Red Hat
2 10 (45.45%) Oracle
3 9 (40.91%) Cisco
4 5 (22.73%) VMware
5 4 (18.18%) Acme Packet
5 4 (18.18%) Brocade
5 4 (18.18%) SonicWALL
6 3 (13.64%) EMC
6 3 (13.64%) IBM
6 3 (13.64%) Microsoft
7 2 (9.09%) Juniper
8 1 (4.55%) BroadSoft
8 1 (4.55%) Dell
8 1 (4.55%) F5
8 1 (4.55%) Perforce
8 1 (4.55%) Polycom
8 1 (4.55%) Radware
8 1 (4.55%) Sonus
8 1 (4.55%) Yealink