The following table provides summary statistics for permanent job vacancies advertised in Bristol 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 West / Bristol
Rank 118 128 94
Rank change year-on-year +10 -34  
Permanent jobs citing CentOS 13 7 35
As % of all permanent IT jobs advertised in Bristol 0.71% 0.38% 1.82%
As % of the Operating Systems category 4.19% 1.61% 7.45%
Number of salaries quoted 10 7 34
Median salary £42,500 £45,000 £46,250
Median salary % change year-on-year -5.55% -2.70%  
90% offered a salary of more than £39,500 £37,500 £37,500
10% offered a salary of more than £45,000 £65,000 £75,000
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 Bristol with a requirement for operating system skills.

Operating System Skills
Bristol
Permanent job vacancies with a requirement for operating system skills 310 436 470
As % of all permanent IT job vacancies advertised in Bristol 16.87% 23.54% 24.50%
Number of salaries quoted 252 406 406
Median salary £36,000 £40,000 £40,000
Median salary % change year-on-year -10.00% -  
90% offered a salary of more than £25,000 £22,950 £25,000
10% offered a salary of more than £50,000 £67,500 £62,500
UK excluding London median salary £37,500 £37,500 £37,500

CentOS
Job Vacancy Trend in Bristol

The job posting trend of jobs advertised in Bristol 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 Bristol

CentOS
Salary Trend in Bristol

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

Salary trend for CentOS in Bristol

CentOS
Top 30 Related IT Skills in Bristol

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 Bristol region with a requirement for CentOS.

1 21 (100.00%) Linux
1 21 (100.00%) Red Hat
2 11 (52.38%) Windows
3 10 (47.62%) VMware
4 9 (42.86%) Shell Script
5 8 (38.10%) Bash Shell
6 7 (33.33%) DevOps
6 7 (33.33%) Windows Server 2008
6 7 (33.33%) Finance
7 6 (28.57%) IIS
7 6 (28.57%) C#
7 6 (28.57%) .NET
7 6 (28.57%) PowerShell
7 6 (28.57%) Marketing
7 6 (28.57%) Windows Server 2012
7 6 (28.57%) Git (software)
7 6 (28.57%) Windows Server
8 5 (23.81%) Amazon AWS
8 5 (23.81%) SAP Oil and Gas
8 5 (23.81%) Digital Marketing
8 5 (23.81%) Perl
8 5 (23.81%) SAP
8 5 (23.81%) AIX
8 5 (23.81%) Cisco
8 5 (23.81%) Business Intelligence
8 5 (23.81%) Manufacturing
8 5 (23.81%) Firewall
8 5 (23.81%) Electronics
8 5 (23.81%) Telecoms
8 5 (23.81%) Programme Management

CentOS
Top Related IT Skills in Bristol 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 (28.57%) IIS
2 4 (19.05%) Apache
3 1 (4.76%) nginx
3 1 (4.76%) OpenStack
Applications
1 2 (9.52%) HipChat
Business Applications
1 5 (23.81%) SAP Oil and Gas
Cloud Services
1 5 (23.81%) Amazon AWS
2 1 (4.76%) G Suite
2 1 (4.76%) Microsoft Azure
Communications & Networking
1 5 (23.81%) Firewall
2 4 (19.05%) Cisco ASA
2 4 (19.05%) NAS
2 4 (19.05%) SAN
3 3 (14.29%) DNS
3 3 (14.29%) Internet
4 2 (9.52%) FTP
4 2 (9.52%) HTTP
Database & Business Intelligence
1 4 (19.05%) SQL Server
2 1 (4.76%) MongoDB
2 1 (4.76%) MySQL
2 1 (4.76%) PostgreSQL
Development Applications
1 6 (28.57%) Git (software)
2 4 (19.05%) JIRA
3 2 (9.52%) Subversion
4 1 (4.76%) Atlassian Bamboo
4 1 (4.76%) Cucumber
4 1 (4.76%) Jenkins
4 1 (4.76%) JUnit
4 1 (4.76%) PHPUnit
4 1 (4.76%) Selenium
4 1 (4.76%) Vagrant
General
1 7 (33.33%) Finance
2 6 (28.57%) Marketing
3 5 (23.81%) Electronics
3 5 (23.81%) Manufacturing
3 5 (23.81%) Telecoms
4 2 (9.52%) Back Office
Job Titles
1 7 (33.33%) Linux Engineer
2 6 (28.57%) DevOps Engineer
3 3 (14.29%) 3rd Line Support
3 3 (14.29%) Administrator
3 3 (14.29%) Linux DevOps Engineer
3 3 (14.29%) Linux Support
3 3 (14.29%) Linux/Unix DevOps
3 3 (14.29%) Operations Engineer
3 3 (14.29%) Support Engineer
3 3 (14.29%) Systems Administrator
4 2 (9.52%) AIX Support
4 2 (9.52%) Applications Engineer
4 2 (9.52%) Applications Support
4 2 (9.52%) Applications Support Engineer
4 2 (9.52%) IT Engineer
4 2 (9.52%) Linux Administrator
4 2 (9.52%) Linux Systems Administrator
4 2 (9.52%) Unix Administrator
4 2 (9.52%) Unix Systems Administrator
5 1 (4.76%) Linux Support Engineer
Libraries, Frameworks & Software Standards
1 6 (28.57%) .NET
2 4 (19.05%) Web Services
3 1 (4.76%) Behat
3 1 (4.76%) LAPP Stack
3 1 (4.76%) LEMP Stack
3 1 (4.76%) Node.js
Miscellaneous
1 2 (9.52%) Fintech
2 1 (4.76%) Data Centre
2 1 (4.76%) Derivative
2 1 (4.76%) Public Cloud
2 1 (4.76%) Wiki
Operating Systems
1 21 (100.00%) Linux
2 11 (52.38%) Windows
3 7 (33.33%) Windows Server 2008
4 6 (28.57%) Windows Server
4 6 (28.57%) Windows Server 2012
5 5 (23.81%) AIX
6 4 (19.05%) Red Hat Enterprise Linux
6 4 (19.05%) Solaris
7 3 (14.29%) Unix
8 1 (4.76%) Debian
8 1 (4.76%) Fedora
8 1 (4.76%) Oracle Linux
8 1 (4.76%) SUSE
8 1 (4.76%) Ubuntu
8 1 (4.76%) Windows 2000
8 1 (4.76%) Windows Server 2003
Processes & Methodologies
1 7 (33.33%) DevOps
2 5 (23.81%) Business Intelligence
2 5 (23.81%) Digital Marketing
2 5 (23.81%) Programme Management
3 3 (14.29%) Dashboard Development
3 3 (14.29%) Performance Tuning
3 3 (14.29%) Project Management
4 2 (9.52%) Configuration Management
4 2 (9.52%) CRM
4 2 (9.52%) Cybersecurity
4 2 (9.52%) E-Commerce
4 2 (9.52%) ITIL
4 2 (9.52%) SIEM
4 2 (9.52%) Vulnerability Assessment
4 2 (9.52%) Workflow
5 1 (4.76%) Agile Software Development
5 1 (4.76%) BDD
5 1 (4.76%) Continuous Integration
5 1 (4.76%) Performance Testing
5 1 (4.76%) PRINCE2
Programming Languages
1 9 (42.86%) Shell Script
2 8 (38.10%) Bash Shell
3 6 (28.57%) C#
3 6 (28.57%) PowerShell
4 5 (23.81%) Perl
5 4 (19.05%) Python
6 3 (14.29%) Java
6 3 (14.29%) JavaScript
7 2 (9.52%) SQL
8 1 (4.76%) PHP
Qualifications
1 3 (14.29%) CCNA
1 3 (14.29%) Cisco Certification
1 3 (14.29%) VMware Certified Professional (VCP)
2 1 (4.76%) DV Cleared
2 1 (4.76%) SC Cleared
2 1 (4.76%) Security Cleared
Quality Assurance & Compliance
1 3 (14.29%) SLA
2 2 (9.52%) GPG13
3 1 (4.76%) ISO/IEC 27001
3 1 (4.76%) QA
System Software
1 4 (19.05%) VMware Infrastructure
2 1 (4.76%) Docker
2 1 (4.76%) Hyper-V
2 1 (4.76%) KVM
2 1 (4.76%) RHEV
2 1 (4.76%) Squid
2 1 (4.76%) VirtualBox
Systems Management
1 3 (14.29%) Grafana
1 3 (14.29%) Graphite
1 3 (14.29%) Puppet
2 2 (9.52%) Nagios
2 2 (9.52%) QRadar
2 2 (9.52%) RSA Archer
3 1 (4.76%) Ansible
3 1 (4.76%) RSA enVision
Vendors
1 21 (100.00%) Red Hat
2 10 (47.62%) VMware
3 5 (23.81%) Cisco
3 5 (23.81%) SAP
4 4 (19.05%) Atlassian
5 2 (9.52%) ArcSight
5 2 (9.52%) Intel Security
6 1 (4.76%) Google
6 1 (4.76%) LogRhythm
6 1 (4.76%) Microsoft
6 1 (4.76%) Oracle
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