Period
to 18 February 2018

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 18 February 2018 with a comparison to the same period in the previous 2 years.

CentOS Linux
South Wales > Cardiff
6 months to
18 Feb 2018
Same period 2017 Same period 2016
Rank 62 96 109
Rank change year-on-year +34 +13 -19
Permanent jobs citing CentOS 14 8 3
As % of all permanent IT jobs advertised in Cardiff 1.75% 0.69% 0.20%
As % of the Operating Systems category 9.21% 2.88% 0.85%
Number of salaries quoted 9 8 3
Cardiff median annual salary £38,000 £32,500 £47,500
Median salary % change year-on-year +16.92% -31.58% +38.18%
10th Percentile £30,100 £21,775 £30,250
90th Percentile £42,500 £59,750 £57,750
South Wales median annual salary £38,000 £40,000 £45,000
% change year-on-year -5.00% -11.11% +32.35%

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 152 278 351
As % of all permanent IT jobs advertised in Cardiff 19.02% 23.82% 23.96%
Number of salaries quoted 132 251 315
Cardiff median annual salary £34,875 £35,000 £35,000
Median salary % change year-on-year -0.36% - +7.69%
10th Percentile £20,500 £22,500 £21,250
90th Percentile £53,750 £52,500 £51,250
South Wales median annual salary £35,000 £36,000 £35,000
% change year-on-year -2.78% +2.86% -

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 18 February 2018.

Salary histogram for CentOS in Cardiff

For the 6 months to 18 February 2018, IT jobs citing CentOS also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads across the Cardiff region with a requirement for CentOS.

1 14 (100.00%) Linux
2 11 (78.57%) Red Hat
3 10 (71.43%) Java
4 9 (64.29%) DevOps
5 8 (57.14%) VMware
6 7 (50.00%) Debian
6 7 (50.00%) Cisco
7 6 (42.86%) TCP/IP
7 6 (42.86%) Citrix
7 6 (42.86%) Firewall
7 6 (42.86%) SLA
7 6 (42.86%) Ubuntu
7 6 (42.86%) Ansible
7 6 (42.86%) Cloud Computing
7 6 (42.86%) Bash Shell
7 6 (42.86%) Continuous Improvement
7 6 (42.86%) NetScaler
8 5 (35.71%) Microsoft Azure
8 5 (35.71%) VMware Infrastructure
8 5 (35.71%) Agile Software Development
8 5 (35.71%) Unix
9 4 (28.57%) Oracle
9 4 (28.57%) Apache
9 4 (28.57%) Python
9 4 (28.57%) Elasticsearch
9 4 (28.57%) MongoDB
9 4 (28.57%) Red Hat Enterprise Linux
9 4 (28.57%) Amazon AWS
9 4 (28.57%) Capacity Planning
10 3 (21.43%) Cisco Nexus

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 4 (28.57%) Apache
1 4 (28.57%) Elasticsearch
2 3 (21.43%) JBoss
2 3 (21.43%) nginx
3 2 (14.29%) Tomcat
4 1 (7.14%) Apache Solr
4 1 (7.14%) IIS
Cloud Services
1 6 (42.86%) Cloud Computing
2 5 (35.71%) Microsoft Azure
3 4 (28.57%) Amazon AWS
Communications & Networking
1 6 (42.86%) Firewall
1 6 (42.86%) NetScaler
1 6 (42.86%) TCP/IP
2 3 (21.43%) Cisco Nexus
2 3 (21.43%) IPsec
2 3 (21.43%) Network Security
2 3 (21.43%) VLAN
2 3 (21.43%) VPN
3 2 (14.29%) Cisco ASA
3 2 (14.29%) Cisco IOS
3 2 (14.29%) DHCP
3 2 (14.29%) DNS
3 2 (14.29%) LAN
3 2 (14.29%) SNMP
3 2 (14.29%) Spanning Tree
4 1 (7.14%) MPLS
4 1 (7.14%) SAN
4 1 (7.14%) VoIP
4 1 (7.14%) Wireshark
Database & Business Intelligence
1 4 (28.57%) MongoDB
2 1 (7.14%) MySQL
2 1 (7.14%) SQL Server
2 1 (7.14%) SQL Server 2008
Development Applications
1 3 (21.43%) Ant
2 2 (14.29%) Git (software)
2 2 (14.29%) Jenkins
2 2 (14.29%) Maven
General
1 1 (7.14%) Finance
Job Titles
1 9 (64.29%) DevOps Engineer
2 8 (57.14%) Linux Engineer
3 5 (35.71%) Linux DevOps Engineer
3 5 (35.71%) Linux/Unix DevOps
4 4 (28.57%) Infrastructure Engineer
5 1 (7.14%) Cloud Engineer
5 1 (7.14%) Cloud Infrastructure Engineer
5 1 (7.14%) Support Engineer
Libraries, Frameworks & Software Standards
1 3 (21.43%) J2EE
1 3 (21.43%) Web Services
2 1 (7.14%) LDAP
Miscellaneous
1 3 (21.43%) Analytical Skills
1 3 (21.43%) Clustering
2 2 (14.29%) Data Centre
2 2 (14.29%) Linux Command Line
3 1 (7.14%) Replication
Operating Systems
1 14 (100.00%) Linux
2 7 (50.00%) Debian
3 6 (42.86%) Ubuntu
4 5 (35.71%) Unix
5 4 (28.57%) Red Hat Enterprise Linux
6 1 (7.14%) Windows
6 1 (7.14%) Windows Server
6 1 (7.14%) Windows Server 2012
Processes & Methodologies
1 9 (64.29%) DevOps
2 6 (42.86%) Continuous Improvement
3 5 (35.71%) Agile Software Development
4 4 (28.57%) Capacity Planning
5 3 (21.43%) Scrum
5 3 (21.43%) SIEM
6 2 (14.29%) Data Protection
6 2 (14.29%) ITIL
6 2 (14.29%) Migration
6 2 (14.29%) Network Load Balancing
6 2 (14.29%) Network Management
7 1 (7.14%) Configuration Management
7 1 (7.14%) Continuous Integration
7 1 (7.14%) Customer Acquisition
7 1 (7.14%) Knowledge Management
7 1 (7.14%) Load Balancing
7 1 (7.14%) Network Monitoring
7 1 (7.14%) Software Deployment
Programming Languages
1 10 (71.43%) Java
2 6 (42.86%) Bash Shell
3 4 (28.57%) Python
4 3 (21.43%) Groovy
4 3 (21.43%) JavaScript
5 2 (14.29%) AWK
6 1 (7.14%) Perl
6 1 (7.14%) PHP
6 1 (7.14%) SQL
Qualifications
1 2 (14.29%) CCNA
1 2 (14.29%) Cisco Certification
1 2 (14.29%) ITIL Foundation Certificate
2 1 (7.14%) Degree
Quality Assurance & Compliance
1 6 (42.86%) SLA
2 2 (14.29%) GDPR
2 2 (14.29%) PCI DSS
System Software
1 5 (35.71%) VMware Infrastructure
2 3 (21.43%) VMware ESXi
3 1 (7.14%) Hyper-V
3 1 (7.14%) KVM
3 1 (7.14%) Virtual Machines
Systems Management
1 6 (42.86%) Ansible
2 2 (14.29%) Terraform
Vendors
1 11 (78.57%) Red Hat
2 8 (57.14%) VMware
3 7 (50.00%) Cisco
4 6 (42.86%) Citrix
5 4 (28.57%) Oracle
6 2 (14.29%) Microsoft
7 1 (7.14%) Brocade
7 1 (7.14%) EMC
7 1 (7.14%) Nimble Storage
7 1 (7.14%) SonicWALL