The table below looks at the statistics for CentOS skills in IT jobs advertised for the Hertfordshire region. Included is a guide to the salaries offered in IT jobs that have cited CentOS over the 3 months to 11 December 2016 with a comparison to the same period over the previous 2 years.

3 months to
11 Dec 2016
Same period 2015 Same period 2014
CentOS Linux
Rank 132 145 152
Rank change year-on-year
+13 +7
Permanent jobs citing CentOS 2 2 1
As % of all permanent IT jobs located in Hertfordshire 0.094% 0.093% 0.041%
As % of the Operating Systems category 0.46% 0.36% 0.15%
Number of salaries quoted 2 2 1
Median salary £31,500 £61,250 £65,000
Median salary % change year-on-year
-48.57% -5.76%
UK excluding London median salary £45,000 £45,000 £40,000
% change year-on-year
- +12.50%
CentOS
East of England

The following table is for comparison with the above and provides statistics for the entire Operating Systems category in permanent jobs advertised in the Hertfordshire region.

Operating Systems Category
Hertfordshire
Permanent IT job ads with a match in the
Operating Systems category
434 551 656
As % of all permanent IT jobs located in Hertfordshire 20.37% 25.63% 27.10%
Number of salaries quoted 342 459 518
Median salary £42,000 £36,000 £40,000
Median salary % change year-on-year
+16.66% -10.00%
90% offered a salary of more than £24,500 £23,000 £19,000
10% offered a salary of more than £62,500 £55,000 £55,000
UK excluding London median salary £37,500 £37,500 £37,500

CentOS
Jobs Demand Trend in Hertfordshire

The demand trend of job ads across the Hertfordshire region citing CentOS as a proportion of all IT jobs with a match in the Operating Systems category.

CentOS Jobs Demand Trend in Hertfordshire

CentOS
Salary Trend in Hertfordshire

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

CentOS Salary Trend in Hertfordshire

CentOS
Top 30 Related IT Skills in Hertfordshire

For the 6 months to 11 December 2016, 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 Hertfordshire region with a requirement for CentOS.

1 7 (100.00%) Windows
1 7 (100.00%) Linux
2 5 (71.43%) Apache
2 5 (71.43%) Red Hat Enterprise Linux
3 4 (57.14%) Windows Server
3 4 (57.14%) Active Directory
4 3 (42.86%) Tomcat
4 3 (42.86%) Python
4 3 (42.86%) Perl
4 3 (42.86%) Firewall
4 3 (42.86%) Bash Shell
4 3 (42.86%) Red Hat
5 2 (28.57%) XenApp
5 2 (28.57%) VMware
5 2 (28.57%) Change Control
5 2 (28.57%) NetScaler
5 2 (28.57%) Windows Server 2012
5 2 (28.57%) Oracle Database
5 2 (28.57%) Relational Database
5 2 (28.57%) DevOps
5 2 (28.57%) Software Delivery
5 2 (28.57%) Data Centre
5 2 (28.57%) Presales
5 2 (28.57%) Vulnerability Assessment
5 2 (28.57%) System Testing
5 2 (28.57%) VMware Infrastructure
5 2 (28.57%) Windows Server 2008
5 2 (28.57%) Change Management
5 2 (28.57%) SQL
5 2 (28.57%) Oracle

CentOS
Top Related IT Skills in Hertfordshire 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 (71.43%) Apache
2 3 (42.86%) Tomcat
Communications & Networking
1 3 (42.86%) Firewall
2 2 (28.57%) NetScaler
Database & Business Intelligence
1 2 (28.57%) Crystal Reports
1 2 (28.57%) Oracle Database
1 2 (28.57%) Oracle Reports
1 2 (28.57%) RDBMS
1 2 (28.57%) Relational Database
1 2 (28.57%) SQL Server
Job Titles
1 5 (71.43%) Administrator
1 5 (71.43%) Systems Administrator
2 3 (42.86%) Linux Administrator
2 3 (42.86%) Linux Systems Administrator
3 2 (28.57%) 2nd Line Engineer
3 2 (28.57%) 2nd Line Support
3 2 (28.57%) 2nd Line Support Engineer
3 2 (28.57%) 2nd Line Technical Support
3 2 (28.57%) 2nd Line Technical Support Engineer
3 2 (28.57%) Support Engineer
3 2 (28.57%) Technical Engineer
3 2 (28.57%) Technical Support
3 2 (28.57%) Technical Support Engineer
Libraries, Frameworks & Software Standards
1 1 (14.29%) LAMP
Miscellaneous
1 2 (28.57%) Data Centre
Operating Systems
1 7 (100.00%) Linux
1 7 (100.00%) Windows
2 5 (71.43%) Red Hat Enterprise Linux
3 4 (57.14%) Windows Server
4 2 (28.57%) Unix
4 2 (28.57%) Windows Server 2008
4 2 (28.57%) Windows Server 2012
Processes & Methodologies
1 2 (28.57%) Change Control
1 2 (28.57%) Change Management
1 2 (28.57%) DevOps
1 2 (28.57%) Presales
1 2 (28.57%) Software Delivery
1 2 (28.57%) System Testing
1 2 (28.57%) Vulnerability Assessment
Programming Languages
1 3 (42.86%) Bash Shell
1 3 (42.86%) Perl
1 3 (42.86%) Python
2 2 (28.57%) SQL
System Software
1 4 (57.14%) Active Directory
2 2 (28.57%) VMware Infrastructure
2 2 (28.57%) XenApp
Vendors
1 3 (42.86%) Red Hat
2 2 (28.57%) Cisco
2 2 (28.57%) Citrix
2 2 (28.57%) Microsoft
2 2 (28.57%) Oracle
2 2 (28.57%) VMware