The following table provides summary statistics for permanent job vacancies advertised in Cardiff 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
South Wales / Cardiff
Rank 60 - 59
Rank change year-on-year - 0  
Permanent jobs citing CentOS 8 0 9
As % of all permanent IT jobs advertised in Cardiff 1.42% - 1.38%
As % of the Operating Systems category 6.02% - 5.42%
Number of salaries quoted 6 0 8
Median salary £25,000 - £37,500
90% offered a salary of more than £24,500 - £33,750
10% offered a salary of more than £47,500 - £50,350
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 Cardiff with a requirement for operating system skills.

Operating System Skills
Cardiff
Permanent job vacancies with a requirement for operating system skills 133 169 166
As % of all permanent IT job vacancies advertised in Cardiff 23.67% 24.25% 25.42%
Number of salaries quoted 118 144 142
Median salary £35,000 £34,000 £36,000
Median salary % change year-on-year +2.94% -5.55%  
90% offered a salary of more than £22,500 £23,000 £24,500
10% offered a salary of more than £45,000 £45,000 £50,000
UK excluding London median salary £37,500 £37,500 £37,500

CentOS
Job Vacancy Trend in Cardiff

The job posting trend of jobs advertised in Cardiff 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 Cardiff

CentOS
Salary Trend in Cardiff

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

Salary trend for CentOS in Cardiff

CentOS
Salary Histogram in Cardiff

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

Salary histogram for CentOS in Cardiff

CentOS
Top 30 Related IT Skills in Cardiff

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 Cardiff region with a requirement for CentOS.

1 12 (100.00%) Linux
2 10 (83.33%) Red Hat
3 8 (66.67%) Cisco
3 8 (66.67%) MySQL
4 7 (58.33%) Oracle
5 6 (50.00%) TCP/IP
6 5 (41.67%) Python
6 5 (41.67%) VoIP
6 5 (41.67%) Firewall
6 5 (41.67%) Debian
6 5 (41.67%) Ubuntu
7 4 (33.33%) Brocade
7 4 (33.33%) Wireshark
7 4 (33.33%) SonicWALL
7 4 (33.33%) VMware Infrastructure
7 4 (33.33%) Red Hat Enterprise Linux
7 4 (33.33%) Amazon AWS
7 4 (33.33%) Acme Packet
7 4 (33.33%) Network Monitoring
7 4 (33.33%) DevOps
7 4 (33.33%) PostgreSQL
7 4 (33.33%) VMware
7 4 (33.33%) RTP
7 4 (33.33%) MPLS
7 4 (33.33%) PBX
7 4 (33.33%) Java
7 4 (33.33%) Apache
7 4 (33.33%) Windows
8 3 (25.00%) Unix
8 3 (25.00%) SQL

CentOS
Top Related IT Skills in Cardiff 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 4 (33.33%) Apache
2 2 (16.67%) JBoss
2 2 (16.67%) OpenStack
2 2 (16.67%) SharePoint
3 1 (8.33%) IIS
3 1 (8.33%) nginx
3 1 (8.33%) Oracle HTTP Server
3 1 (8.33%) Skype for Business
3 1 (8.33%) Tomcat
Applications
1 3 (25.00%) MS Excel
Cloud Services
1 4 (33.33%) Amazon AWS
2 3 (25.00%) Microsoft Azure
3 1 (8.33%) GitHub
Communications & Networking
1 6 (50.00%) TCP/IP
2 5 (41.67%) Firewall
2 5 (41.67%) VoIP
3 4 (33.33%) MPLS
3 4 (33.33%) PBX
3 4 (33.33%) RTP
3 4 (33.33%) Wireshark
4 1 (8.33%) BIG-IP
4 1 (8.33%) DNS
4 1 (8.33%) HTTP
Database & Business Intelligence
1 8 (66.67%) MySQL
2 4 (33.33%) PostgreSQL
3 2 (16.67%) NoSQL
4 1 (8.33%) SQL Server
Development Applications
1 1 (8.33%) Bitbucket
General
1 2 (16.67%) Law
2 1 (8.33%) Finance
2 1 (8.33%) Games
Job Titles
1 7 (58.33%) Systems Engineer
2 3 (25.00%) Linux Engineer
3 2 (16.67%) Linux Systems Engineer
3 2 (16.67%) Network Engineer
3 2 (16.67%) Senior Network Engineer
4 1 (8.33%) 3rd Line Engineer
4 1 (8.33%) Administrator
4 1 (8.33%) Infrastructure Engineer
4 1 (8.33%) Infrastructure Security Engineer
4 1 (8.33%) Junior
4 1 (8.33%) Junior Systems Engineer
4 1 (8.33%) Linux Administrator
4 1 (8.33%) Linux Systems Administrator
4 1 (8.33%) Operations Engineer
4 1 (8.33%) Security Engineer
4 1 (8.33%) Systems Administrator
Libraries, Frameworks & Software Standards
1 1 (8.33%) LAMP
Miscellaneous
1 2 (16.67%) Analytical Skills
1 2 (16.67%) CMDB
1 2 (16.67%) Hybrid Cloud
1 2 (16.67%) Management Information System
1 2 (16.67%) Public Cloud
Operating Systems
1 12 (100.00%) Linux
2 5 (41.67%) Debian
2 5 (41.67%) Ubuntu
3 4 (33.33%) Red Hat Enterprise Linux
3 4 (33.33%) Windows
4 3 (25.00%) Unix
5 1 (8.33%) AIX
5 1 (8.33%) Gentoo
5 1 (8.33%) Windows Server
5 1 (8.33%) Windows Server 2008
Processes & Methodologies
1 4 (33.33%) DevOps
1 4 (33.33%) Network Monitoring
2 3 (25.00%) Configuration Management
3 2 (16.67%) Change Management
3 2 (16.67%) ITIL
3 2 (16.67%) Security Management
3 2 (16.67%) Service Management
4 1 (8.33%) Agile Software Development
4 1 (8.33%) Load Balancing
4 1 (8.33%) Migration
4 1 (8.33%) Open Source
4 1 (8.33%) Service Delivery
4 1 (8.33%) Vulnerability Assessment
Programming Languages
1 5 (41.67%) Python
2 4 (33.33%) Java
3 3 (25.00%) SQL
4 1 (8.33%) Bash Shell
4 1 (8.33%) C
4 1 (8.33%) Perl
4 1 (8.33%) PowerShell
4 1 (8.33%) R
4 1 (8.33%) Ruby
System Software
1 4 (33.33%) VMware Infrastructure
2 1 (8.33%) Active Directory
2 1 (8.33%) Hyper-V
2 1 (8.33%) vSphere
Systems Management
1 2 (16.67%) NetBackup
2 1 (8.33%) SCCM
2 1 (8.33%) WSUS
Vendors
1 10 (83.33%) Red Hat
2 8 (66.67%) Cisco
3 7 (58.33%) Oracle
4 4 (33.33%) Acme Packet
4 4 (33.33%) Brocade
4 4 (33.33%) SonicWALL
4 4 (33.33%) VMware
5 3 (25.00%) Microsoft
6 2 (16.67%) Juniper
7 1 (8.33%) Dell
7 1 (8.33%) EMC
7 1 (8.33%) F5
7 1 (8.33%) IBM
7 1 (8.33%) Radware