The table below looks at the statistics for CentOS skills in IT jobs advertised for the Hertfordshire region. Included is a guide to the average salaries offered in IT jobs that have cited CentOS over the 3 months to 13 February 2016 with a comparison to the same period in the previous 2 years.

Location
3 months to
13 Feb 2016
Same period 2015 Same period 2014
CentOS Linux
Rank 137 139 104
Rank change year-on-year
+2 -35
Permanent jobs citing CentOS 8 7 31
As % of all permanent IT jobs located in Hertfordshire 0.37% 0.35% 1.52%
As % of the Operating Systems category 1.43% 1.16% 4.91%
Number of salaries quoted 8 7 31
Average salary £44,000 £55,000 £52,500
Average salary % change year-on-year
-20.00% +4.76%
90% offered a salary of more than £36,000 £54,600 £40,000
10% offered a salary of more than £50,000 £57,000 £67,500
UK excluding London average salary £45,000 £40,000 £43,500
% change year-on-year
+12.50% -8.04%
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
559 605 631
As % of all permanent IT jobs located in Hertfordshire 25.69% 30.40% 30.84%
Number of salaries quoted 455 482 511
Average salary £36,250 £40,000 £37,500
Average salary % change year-on-year
-9.37% +6.66%
90% offered a salary of more than £23,000 £21,750 £23,500
10% offered a salary of more than £55,000 £52,500 £57,500
UK excluding London average salary £37,500 £37,500 £37,500

CentOS
Jobs Demand Trend in Hertfordshire

This chart provides a 3-month moving total of permanent IT jobs citing CentOS across the Hertfordshire region as a proportion of the total demand within 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
Salary Histogram in Hertfordshire

This chart provides a salary histogram for IT jobs citing CentOS across the Hertfordshire region over the 3 months to 13 February 2016.

CentOS Salary Histogram in Hertfordshire

CentOS
Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the average salaries quoted in IT jobs citing CentOS within the Hertfordshire region over the 3 months to 13 February 2016. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location
(Use links below to see detailed
statistics and historical trends)
Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Average Salary
Last 3 Months
Average Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Harpenden - 3 £37,500 -
Potters Bar - 1 £32,500 -
CentOS
East of England

CentOS
Top 30 Related IT Skills in Hertfordshire

For the 6 months to 13 February 2016, IT jobs across the Hertfordshire region citing CentOS also mentioned the following IT skills in order of popularity. The figures indicate the number of jobs and their proportion against the total number of IT job ads sampled that cited CentOS.

1 11 (100.00%) Linux
2 7 (63.64%) SAN
3 6 (54.55%) Xen
3 6 (54.55%) Red Hat
4 5 (45.45%) Nagios
4 5 (45.45%) Firewall
4 5 (45.45%) TCP/IP
5 4 (36.36%) DNS
5 4 (36.36%) SSL
5 4 (36.36%) SLA
5 4 (36.36%) POP3
5 4 (36.36%) SMTP
5 4 (36.36%) FTP
5 4 (36.36%) Apache
5 4 (36.36%) Perl
5 4 (36.36%) PHP
5 4 (36.36%) SQL
5 4 (36.36%) MySQL
5 4 (36.36%) LAMP
5 4 (36.36%) Replication
5 4 (36.36%) VMware
5 4 (36.36%) IMAP
5 4 (36.36%) Load Balancing
5 4 (36.36%) Joomla!
5 4 (36.36%) Time Management
5 4 (36.36%) WordPress
5 4 (36.36%) Clustering
5 4 (36.36%) SSH
5 4 (36.36%) Magento
5 4 (36.36%) Cacti

CentOS
Top Related IT Skills in Hertfordshire by Category

For the 6 months to 13 February 2016, IT jobs across the Hertfordshire region citing CentOS also mentioned the following IT skills grouped by category. The figures indicate the number of jobs and their proportion against the total number of IT job ads sampled that cited CentOS. Up to 20 skills are shown per category.

Application Platforms
1 4 (36.36%) Apache
1 4 (36.36%) Joomla!
1 4 (36.36%) Moodle
1 4 (36.36%) nginx
1 4 (36.36%) WordPress
Business Applications
1 4 (36.36%) Magento
Cloud Services
1 2 (18.18%) SaaS
Communications & Networking
1 7 (63.64%) SAN
2 5 (45.45%) Firewall
2 5 (45.45%) TCP/IP
3 4 (36.36%) DNS
3 4 (36.36%) FTP
3 4 (36.36%) IMAP
3 4 (36.36%) POP3
3 4 (36.36%) SMTP
3 4 (36.36%) SSH
3 4 (36.36%) SSL
4 3 (27.27%) NAS
5 1 (9.09%) IP Telephony
5 1 (9.09%) LAN
5 1 (9.09%) WAN
Database & Business Intelligence
1 4 (36.36%) MySQL
Job Titles
1 7 (63.64%) Administrator
1 7 (63.64%) Linux Administrator
1 7 (63.64%) Linux Systems Administrator
1 7 (63.64%) Systems Administrator
2 4 (36.36%) Web Administrator
2 4 (36.36%) Web Hosting Administrator
3 3 (27.27%) Operations Engineer
3 3 (27.27%) Unix Administrator
3 3 (27.27%) Unix Linux Systems Administrator
3 3 (27.27%) Unix Systems Administrator
3 3 (27.27%) VMWare Administrator
4 2 (18.18%) Linux Engineer
4 2 (18.18%) Linux Systems Engineer
4 2 (18.18%) Systems Engineer
5 1 (9.09%) Cloud Engineer
5 1 (9.09%) DevOps Engineer
5 1 (9.09%) IT Administrator
5 1 (9.09%) IT Engineer
5 1 (9.09%) IT Systems Administrator
5 1 (9.09%) Linux DevOps Engineer
Libraries, Frameworks & Software Standards
1 4 (36.36%) Alternative PHP Cache
1 4 (36.36%) LAMP
1 4 (36.36%) LEMP Stack
Miscellaneous
1 4 (36.36%) Clustering
1 4 (36.36%) Replication
2 2 (18.18%) Data Centre
Operating Systems
1 11 (100.00%) Linux
2 3 (27.27%) Unix
3 2 (18.18%) Ubuntu
4 1 (9.09%) Red Hat Enterprise Linux
4 1 (9.09%) Solaris
4 1 (9.09%) Windows
4 1 (9.09%) Windows Server
4 1 (9.09%) Windows Server 2008
4 1 (9.09%) Windows Server 2012
Processes & Methodologies
1 4 (36.36%) Load Balancing
1 4 (36.36%) Performance Tuning
1 4 (36.36%) Time Management
2 2 (18.18%) BCP
2 2 (18.18%) Configuration Management
2 2 (18.18%) DevOps
2 2 (18.18%) High Availability
2 2 (18.18%) Information Management
2 2 (18.18%) ITIL
3 1 (9.09%) Ticket Management
Programming Languages
1 4 (36.36%) Bash Shell
1 4 (36.36%) Perl
1 4 (36.36%) PHP
1 4 (36.36%) SQL
Qualifications
1 1 (9.09%) CCNA
1 1 (9.09%) Cisco Certification
1 1 (9.09%) MCITP
1 1 (9.09%) Microsoft Certification
Quality Assurance & Compliance
1 4 (36.36%) SLA
2 2 (18.18%) PCI DSS
System Software
1 6 (54.55%) Xen
2 4 (36.36%) iptables
2 4 (36.36%) Sendmail
2 4 (36.36%) Varnish
3 2 (18.18%) VMware Infrastructure
4 1 (9.09%) VMware ESX
Systems Management
1 5 (45.45%) Nagios
2 4 (36.36%) Cacti
2 4 (36.36%) cPanel
3 2 (18.18%) Ansible
3 2 (18.18%) Opscode Chef
3 2 (18.18%) Puppet
3 2 (18.18%) Salt
Vendors
1 6 (54.55%) Red Hat
2 4 (36.36%) VMware
3 3 (27.27%) Citrix
3 3 (27.27%) Sun
4 2 (18.18%) SaltStack
5 1 (9.09%) Avaya
5 1 (9.09%) Cisco
5 1 (9.09%) Fortinet
5 1 (9.09%) Microsoft