Period
to 22 November 2017

The following table provides summary statistics for permanent job vacancies advertised in Birmingham 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 22 November 2017 with a comparison to the same period in the previous 2 years.

CentOS Linux
West Midlands > Birmingham
6 months to
22 Nov 2017
Same period 2016 Same period 2015
Rank 176 202 166
Rank change year-on-year +26 -36 -
Permanent jobs citing CentOS 21 13 18
As % of all permanent IT jobs advertised in Birmingham 0.54% 0.27% 0.46%
As % of the Operating Systems category 2.66% 1.56% 2.05%
Number of salaries quoted 20 10 17
Birmingham median annual salary £37,750 £67,500 £47,500
Median salary % change year-on-year -44.07% +42.11% -
10th Percentile £30,500 £61,250 £33,250
90th Percentile £60,000 £71,375 £60,000
West Midlands median annual salary £36,500 £52,500 £40,750
% change year-on-year -30.48% +28.83% +25.38%

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 Birmingham with a requirement for operating system skills.

All Operating Systems
Birmingham
Permanent vacancies with a requirement for operating system skills 788 831 880
As % of all permanent IT jobs advertised in Birmingham 20.35% 17.46% 22.49%
Number of salaries quoted 714 655 774
Birmingham median annual salary £38,750 £37,500 £39,000
Median salary % change year-on-year +3.33% -3.85% +1.30%
10th Percentile £25,750 £23,000 £24,313
90th Percentile £57,500 £62,500 £58,750
West Midlands median annual salary £36,000 £35,000 £37,500
% change year-on-year +2.86% -6.67% +5.63%

CentOS
Job Vacancy Trend in Birmingham

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

Job vacancy trend for CentOS in Birmingham

CentOS
Salary Trend in Birmingham

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

Salary trend for CentOS in Birmingham

CentOS
Salary Histogram in Birmingham

The salary distribution of IT jobs citing CentOS in Birmingham over the 6 months to 22 November 2017.

Salary histogram for CentOS in Birmingham

For the 6 months to 22 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 Birmingham region with a requirement for CentOS.

1 21 (100.00%) Linux
2 18 (85.71%) Red Hat
3 14 (66.67%) Apache
4 12 (57.14%) Ubuntu
4 12 (57.14%) Red Hat Enterprise Linux
5 11 (52.38%) Bash Shell
6 10 (47.62%) VMware
6 10 (47.62%) MySQL
7 9 (42.86%) Windows
7 9 (42.86%) Windows Server
8 8 (38.10%) vSphere
8 8 (38.10%) SQL Server
8 8 (38.10%) Juniper
8 8 (38.10%) Cisco
8 8 (38.10%) Microsoft
8 8 (38.10%) Firewall
9 7 (33.33%) Disaster Recovery
9 7 (33.33%) Clustering
9 7 (33.33%) Business Continuity
9 7 (33.33%) Handset
9 7 (33.33%) Active Directory
9 7 (33.33%) Shell Script
9 7 (33.33%) Tomcat
9 7 (33.33%) Python
9 7 (33.33%) Open Source
9 7 (33.33%) SQL Server 2008
9 7 (33.33%) VMware ESXi
9 7 (33.33%) SQL Server 2012
9 7 (33.33%) Business Continuity Planning
9 7 (33.33%) vCenter Server

CentOS
Co-occurring IT Skills in Birmingham 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 14 (66.67%) Apache
2 7 (33.33%) Tomcat
Cloud Services
1 2 (9.52%) Amazon AWS
1 2 (9.52%) Amazon CloudWatch
1 2 (9.52%) AWS CloudFormation
1 2 (9.52%) Datadog
1 2 (9.52%) Google Cloud Platform
1 2 (9.52%) Microsoft Azure
Communications & Networking
1 8 (38.10%) Firewall
2 6 (28.57%) SMS
3 3 (14.29%) SAN
4 1 (4.76%) IMAP
4 1 (4.76%) Internet
4 1 (4.76%) LDAP
4 1 (4.76%) OpenLDAP
4 1 (4.76%) S/MIME
4 1 (4.76%) SMTP
4 1 (4.76%) TCP/IP
4 1 (4.76%) Unified Communications
Database & Business Intelligence
1 10 (47.62%) MySQL
2 8 (38.10%) SQL Server
3 7 (33.33%) SQL Server 2008
3 7 (33.33%) SQL Server 2012
4 6 (28.57%) MongoDB
4 6 (28.57%) NoSQL
4 6 (28.57%) Redis
5 4 (19.05%) MariaDB
6 1 (4.76%) PostgreSQL
Development Applications
1 6 (28.57%) Eclipse
1 6 (28.57%) Git (software)
1 6 (28.57%) Subversion
2 2 (9.52%) Atlassian Bamboo
2 2 (9.52%) Jenkins
2 2 (9.52%) Travis CI
2 2 (9.52%) Vagrant
General
1 6 (28.57%) Billing
1 6 (28.57%) Games
2 3 (14.29%) Finance
Job Titles
1 8 (38.10%) Analyst
1 8 (38.10%) Technical Analyst
2 5 (23.81%) C++ Programmer
2 5 (23.81%) Programmer
3 4 (19.05%) Administrator
3 4 (19.05%) Linux Administrator
4 2 (9.52%) DevOps Engineer
5 1 (4.76%) Infrastructure Analyst
5 1 (4.76%) Network Manager
5 1 (4.76%) Network Project Manager
5 1 (4.76%) Project Manager
5 1 (4.76%) Technical Infrastructure Analyst
Libraries, Frameworks & Software Standards
1 6 (28.57%) XML
2 2 (9.52%) Elastic Stack
3 1 (4.76%) LAPP Stack
Miscellaneous
1 7 (33.33%) Clustering
1 7 (33.33%) Handset
2 6 (28.57%) Mobile Payment
3 3 (14.29%) Data Centre
4 2 (9.52%) Analytical Skills
4 2 (9.52%) Linux Command Line
5 1 (4.76%) BBC
5 1 (4.76%) iPad
Operating Systems
1 21 (100.00%) Linux
2 12 (57.14%) Red Hat Enterprise Linux
2 12 (57.14%) Ubuntu
3 9 (42.86%) Windows
3 9 (42.86%) Windows Server
4 6 (28.57%) Debian
5 2 (9.52%) DC/OS
5 2 (9.52%) Windows Server 2008
6 1 (4.76%) Solaris
6 1 (4.76%) SUSE
6 1 (4.76%) Unix
Processes & Methodologies
1 7 (33.33%) Business Continuity
1 7 (33.33%) Business Continuity Planning
1 7 (33.33%) Disaster Recovery
1 7 (33.33%) Open Source
2 6 (28.57%) Business Intelligence
3 4 (19.05%) Information Security
3 4 (19.05%) Network Management
3 4 (19.05%) Service Delivery
4 3 (14.29%) Proactive Monitoring
4 3 (14.29%) Risk Management
4 3 (14.29%) Root Cause Analysis
5 2 (9.52%) Agile Software Development
5 2 (9.52%) Configuration Management
5 2 (9.52%) Continuous Integration
5 2 (9.52%) DevOps
5 2 (9.52%) SDLC
5 2 (9.52%) Server Monitoring
5 2 (9.52%) Service Design
6 1 (4.76%) MVC
Programming Languages
1 11 (52.38%) Bash Shell
2 7 (33.33%) Python
2 7 (33.33%) Shell Script
3 6 (28.57%) C++
4 4 (19.05%) Perl
4 4 (19.05%) PHP
Qualifications
1 4 (19.05%) CCNA
1 4 (19.05%) Cisco Certification
1 4 (19.05%) MCSA
1 4 (19.05%) Microsoft Certification
2 2 (9.52%) Security Cleared
Quality Assurance & Compliance
1 3 (14.29%) SLA
System Software
1 8 (38.10%) vSphere
2 7 (33.33%) Active Directory
2 7 (33.33%) VMware ESXi
3 6 (28.57%) VMware Infrastructure
4 2 (9.52%) Docker
4 2 (9.52%) Hyper-V
4 2 (9.52%) Virtual Machines
4 2 (9.52%) VirtualBox
5 1 (4.76%) Sendmail
Systems Management
1 7 (33.33%) vCenter Server
2 4 (19.05%) Cacti
2 4 (19.05%) Icinga
2 4 (19.05%) Nagios
3 2 (9.52%) Ansible
3 2 (9.52%) Docker Swarm
3 2 (9.52%) Kubernetes
3 2 (9.52%) Opscode Chef
3 2 (9.52%) Packer
3 2 (9.52%) Puppet
3 2 (9.52%) Terraform
Vendors
1 18 (85.71%) Red Hat
2 10 (47.62%) VMware
3 8 (38.10%) Cisco
3 8 (38.10%) Juniper
3 8 (38.10%) Microsoft
4 2 (9.52%) Google
4 2 (9.52%) New Relic
4 2 (9.52%) Splunk
5 1 (4.76%) Proofpoint