Period
to 21 November 2017

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 6 months to 21 November 2017 with a comparison to the same period in the previous 2 years.

CentOS Linux
South Wales > Cardiff
6 months to
21 Nov 2017
Same period 2016 Same period 2015
Rank 64 94 111
Rank change year-on-year +30 +17 -20
Permanent jobs citing CentOS 12 17 4
As % of all permanent IT jobs advertised in Cardiff 1.48% 1.24% 0.26%
As % of the Operating Systems category 7.64% 4.87% 1.07%
Number of salaries quoted 10 17 3
Cardiff median annual salary £35,000 £32,500 £47,500
Median salary % change year-on-year +7.69% -31.58% +35.71%
10th Percentile £24,875 £24,250 £30,250
90th Percentile £40,700 £50,000 £57,750
South Wales median annual salary £37,500 £41,250 £40,000
% change year-on-year -9.09% +3.13% +17.65%

CentOS is in the Operating Systems category. The following 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.

All Operating Systems
Cardiff
Permanent vacancies with a requirement for operating system skills 157 349 375
As % of all permanent IT jobs advertised in Cardiff 19.38% 25.46% 24.02%
Number of salaries quoted 145 311 333
Cardiff median annual salary £36,000 £35,000 £36,000
Median salary % change year-on-year +2.86% -2.78% +10.77%
10th Percentile £23,600 £21,250 £21,000
90th Percentile £53,250 £52,500 £50,000
South Wales median annual salary £35,000 £35,000 £35,000

CentOS
Job Vacancy Trend in Cardiff

Job postings citing CentOS as a percentage of all IT jobs advertised in Cardiff.

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 6 months to 21 November 2017.

Salary histogram for CentOS in Cardiff

For the 6 months to 21 November 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 9 (75.00%) Cisco
3 8 (66.67%) Red Hat
3 8 (66.67%) Debian
4 7 (58.33%) Firewall
4 7 (58.33%) VMware
4 7 (58.33%) Java
4 7 (58.33%) VMware Infrastructure
5 6 (50.00%) Cloud Computing
5 6 (50.00%) Continuous Improvement
5 6 (50.00%) NetScaler
5 6 (50.00%) Citrix
5 6 (50.00%) SLA
5 6 (50.00%) Ubuntu
6 5 (41.67%) MongoDB
6 5 (41.67%) Elasticsearch
6 5 (41.67%) Microsoft Azure
6 5 (41.67%) Capacity Planning
6 5 (41.67%) DevOps
7 4 (33.33%) Amazon AWS
7 4 (33.33%) VPN
7 4 (33.33%) Apache
8 3 (25.00%) IIS
8 3 (25.00%) Unix
8 3 (25.00%) Windows
8 3 (25.00%) TCP/IP
8 3 (25.00%) Microsoft
8 3 (25.00%) IPsec
8 3 (25.00%) Configuration Management
8 3 (25.00%) Clustering

CentOS
Co-occurring 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 5 (41.67%) Elasticsearch
2 4 (33.33%) Apache
3 3 (25.00%) IIS
3 3 (25.00%) nginx
4 2 (16.67%) Apache Solr
4 2 (16.67%) Tomcat
5 1 (8.33%) Exchange Server 2013
5 1 (8.33%) MS Exchange
5 1 (8.33%) SharePoint
Cloud Services
1 6 (50.00%) Cloud Computing
2 5 (41.67%) Microsoft Azure
3 4 (33.33%) Amazon AWS
4 1 (8.33%) Office 365
Communications & Networking
1 7 (58.33%) Firewall
2 6 (50.00%) NetScaler
3 4 (33.33%) VPN
4 3 (25.00%) Cisco Nexus
4 3 (25.00%) IPsec
4 3 (25.00%) Network Security
4 3 (25.00%) TCP/IP
4 3 (25.00%) VLAN
5 2 (16.67%) DHCP
5 2 (16.67%) DNS
5 2 (16.67%) MPLS
5 2 (16.67%) SAN
5 2 (16.67%) VoIP
5 2 (16.67%) Wireshark
6 1 (8.33%) Cisco IOS
6 1 (8.33%) iSCSI
6 1 (8.33%) LAN
6 1 (8.33%) SNMP
6 1 (8.33%) SSH
6 1 (8.33%) Telnet
Database & Business Intelligence
1 5 (41.67%) MongoDB
2 2 (16.67%) MySQL
2 2 (16.67%) SQL Server
2 2 (16.67%) SQL Server 2008
Development Applications
1 1 (8.33%) GitLab
General
1 2 (16.67%) Law
2 1 (8.33%) Finance
Job Titles
1 5 (41.67%) DevOps Engineer
1 5 (41.67%) Infrastructure Engineer
1 5 (41.67%) Linux Engineer
2 4 (33.33%) Linux DevOps Engineer
2 4 (33.33%) Linux/Unix DevOps
3 3 (25.00%) Support Engineer
4 2 (16.67%) Cloud Engineer
4 2 (16.67%) Cloud Infrastructure Engineer
5 1 (8.33%) Unix Support
5 1 (8.33%) Windows Engineer
5 1 (8.33%) Windows Support Engineer
Miscellaneous
1 3 (25.00%) Clustering
2 2 (16.67%) CMDB
2 2 (16.67%) Replication
3 1 (8.33%) Analytical Skills
3 1 (8.33%) Data Centre
3 1 (8.33%) Linux Command Line
3 1 (8.33%) Management Information System
3 1 (8.33%) Public Cloud
Operating Systems
1 12 (100.00%) Linux
2 8 (66.67%) Debian
3 6 (50.00%) Ubuntu
4 3 (25.00%) Red Hat Enterprise Linux
4 3 (25.00%) Unix
4 3 (25.00%) Windows
4 3 (25.00%) Windows Server
4 3 (25.00%) Windows Server 2012
5 1 (8.33%) Windows Server 2008
Processes & Methodologies
1 6 (50.00%) Continuous Improvement
2 5 (41.67%) Capacity Planning
2 5 (41.67%) DevOps
3 3 (25.00%) Configuration Management
3 3 (25.00%) SIEM
4 2 (16.67%) Change Management
4 2 (16.67%) Load Balancing
4 2 (16.67%) Network Monitoring
4 2 (16.67%) Software Deployment
5 1 (8.33%) Agile Software Development
5 1 (8.33%) Collaborative Working
5 1 (8.33%) Customer Acquisition
5 1 (8.33%) Data Protection
5 1 (8.33%) ITIL
5 1 (8.33%) Migration
5 1 (8.33%) Network Load Balancing
5 1 (8.33%) Network Management
5 1 (8.33%) Problem Management
Programming Languages
1 7 (58.33%) Java
2 1 (8.33%) AWK
2 1 (8.33%) Bash Shell
Qualifications
1 1 (8.33%) CCNA
1 1 (8.33%) Cisco Certification
1 1 (8.33%) ITIL Foundation Certificate
1 1 (8.33%) MCSA
1 1 (8.33%) MCSE
1 1 (8.33%) Microsoft Certification
Quality Assurance & Compliance
1 6 (50.00%) SLA
2 1 (8.33%) GDPR
2 1 (8.33%) PCI DSS
System Software
1 7 (58.33%) VMware Infrastructure
2 3 (25.00%) VMware ESXi
3 1 (8.33%) Active Directory
3 1 (8.33%) Hyper-V
3 1 (8.33%) KVM
3 1 (8.33%) Virtual Machines
Systems Management
1 2 (16.67%) Ansible
2 1 (8.33%) Nagios
2 1 (8.33%) ServiceCenter
Vendors
1 9 (75.00%) Cisco
2 8 (66.67%) Red Hat
3 7 (58.33%) VMware
4 6 (50.00%) Citrix
5 3 (25.00%) Microsoft
6 2 (16.67%) Brocade
6 2 (16.67%) EMC
6 2 (16.67%) Nimble Storage
6 2 (16.67%) Oracle
6 2 (16.67%) SonicWALL
7 1 (8.33%) Dell
7 1 (8.33%) HP
7 1 (8.33%) Juniper
7 1 (8.33%) SolarWinds