The following table provides summary statistics for permanent job vacancies advertised in Liverpool 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 28 March 2017 with a comparison to the same period in the previous 2 years.

CentOS Linux
Merseyside / Liverpool
3 months to
28 Mar 2017
Same period 2016 Same period 2015
Rank - 52 52
Permanent jobs citing CentOS 0 4 3
As % of all permanent IT jobs advertised in Liverpool - 1.02% 0.69%
As % of the Operating Systems category - 4.35% 2.78%
Number of salaries quoted 0 4 1
Median salary - £35,000 £37,500
Median salary % change year-on-year - -6.66%  
UK excluding London median salary £42,500 £45,000 £42,500
% change year-on-year -5.55% +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 Liverpool with a requirement for operating system skills.

Operating System Skills
Liverpool
Permanent job vacancies with a requirement for operating system skills 89 92 108
As % of all permanent IT job vacancies advertised in Liverpool 22.03% 23.53% 24.77%
Number of salaries quoted 54 64 99
Median salary £40,000 £35,000 £37,500
Median salary % change year-on-year +14.28% -6.66%  
90% offered a salary of more than £19,000 £26,000 £20,179
10% offered a salary of more than £52,500 £55,000 £60,000
UK excluding London median salary £37,500 £37,500 £37,500

CentOS
Job Vacancy Trend in Liverpool

The job posting trend of jobs advertised in Liverpool 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 Liverpool

CentOS
Salary Trend in Liverpool

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

Salary trend for CentOS in Liverpool

For the 6 months to 28 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 Liverpool region with a requirement for CentOS.

1 9 (100.00%) Linux
2 7 (77.78%) Bash Shell
3 6 (66.67%) Windows
4 5 (55.56%) Apache
4 5 (55.56%) Java
4 5 (55.56%) Perl
4 5 (55.56%) Microsoft
4 5 (55.56%) Finance
4 5 (55.56%) Unix
5 4 (44.44%) PowerShell
5 4 (44.44%) Red Hat Enterprise Linux
5 4 (44.44%) Puppet
5 4 (44.44%) Ruby
5 4 (44.44%) Red Hat
5 4 (44.44%) Tomcat
5 4 (44.44%) Python
5 4 (44.44%) Windows Server
6 3 (33.33%) Bourne shell
6 3 (33.33%) HPUX
6 3 (33.33%) PHP
6 3 (33.33%) C++
6 3 (33.33%) IIS
6 3 (33.33%) HP
6 3 (33.33%) Advertising
6 3 (33.33%) Fedora
6 3 (33.33%) Ubuntu
6 3 (33.33%) Korn
6 3 (33.33%) JIRA
6 3 (33.33%) Banking
6 3 (33.33%) Continuous Integration

CentOS
Co-occurring IT Skills in Liverpool 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 (55.56%) Apache
2 4 (44.44%) Tomcat
3 3 (33.33%) IIS
4 1 (11.11%) JBoss
Applications
1 2 (22.22%) MS Office
Cloud Services
1 1 (11.11%) Amazon AWS
Database & Business Intelligence
1 2 (22.22%) MySQL
Development Applications
1 3 (33.33%) JIRA
2 2 (22.22%) Git (software)
3 1 (11.11%) Jenkins
General
1 5 (55.56%) Finance
2 3 (33.33%) Advertising
2 3 (33.33%) Banking
3 1 (11.11%) Marketing
Job Titles
1 3 (33.33%) HPUX Engineer
1 3 (33.33%) Linux Engineer
1 3 (33.33%) Windows Engineer
2 2 (22.22%) Administrator
2 2 (22.22%) Developer
2 2 (22.22%) Linux Administrator
2 2 (22.22%) Linux Systems Administrator
2 2 (22.22%) Linux Systems Engineer
2 2 (22.22%) PHP Developer
2 2 (22.22%) Senior Linux Administrator
2 2 (22.22%) Senior Linux Systems Administrator
2 2 (22.22%) Senior Systems Administrator
2 2 (22.22%) Senior Windows Administrator
2 2 (22.22%) Senior Windows Systems Administrator
2 2 (22.22%) Systems Administrator
2 2 (22.22%) Systems Engineer
2 2 (22.22%) Windows Administrator
2 2 (22.22%) Windows Systems Administrator
2 2 (22.22%) Windows Systems Engineer
3 1 (11.11%) DevOps Engineer
Libraries, Frameworks & Software Standards
1 2 (22.22%) LAMP
1 2 (22.22%) Node.js
1 2 (22.22%) Symfony
1 2 (22.22%) WebSockets
2 1 (11.11%) OpenVZ
Miscellaneous
1 2 (22.22%) Data Centre
Operating Systems
1 9 (100.00%) Linux
2 6 (66.67%) Windows
3 5 (55.56%) Unix
4 4 (44.44%) Red Hat Enterprise Linux
4 4 (44.44%) Windows Server
5 3 (33.33%) Fedora
5 3 (33.33%) HPUX
5 3 (33.33%) Ubuntu
6 2 (22.22%) Debian
7 1 (11.11%) Solaris
Processes & Methodologies
1 3 (33.33%) Continuous Integration
2 2 (22.22%) Agile Software Development
2 2 (22.22%) Disaster Recovery
2 2 (22.22%) Scrum
3 1 (11.11%) Configuration Management
3 1 (11.11%) Content Management
3 1 (11.11%) DevOps
3 1 (11.11%) Digital Marketing
3 1 (11.11%) E-Commerce
3 1 (11.11%) Identity Management
3 1 (11.11%) Open Source
3 1 (11.11%) Software Engineering
3 1 (11.11%) Web Development
Programming Languages
1 7 (77.78%) Bash Shell
2 5 (55.56%) Java
2 5 (55.56%) Perl
3 4 (44.44%) PowerShell
3 4 (44.44%) Python
3 4 (44.44%) Ruby
4 3 (33.33%) Bourne shell
4 3 (33.33%) C++
4 3 (33.33%) Korn
4 3 (33.33%) PHP
5 2 (22.22%) JavaScript
6 1 (11.11%) Go
6 1 (11.11%) Groovy
6 1 (11.11%) SQL
System Software
1 2 (22.22%) VMware Infrastructure
2 1 (11.11%) Docker
Systems Management
1 4 (44.44%) Puppet
2 1 (11.11%) Ansible
2 1 (11.11%) Kubernetes
2 1 (11.11%) Mesos
2 1 (11.11%) Rancher
2 1 (11.11%) rkt
2 1 (11.11%) Terraform
Vendors
1 5 (55.56%) Microsoft
2 4 (44.44%) Red Hat
3 3 (33.33%) HP
4 2 (22.22%) Citrix
4 2 (22.22%) VMware