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 1 September 2015 with a comparison to the same period in the previous 2 years.

Location
3 months to
1 Sep 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 144 132 128
Rank change year-on-year
-12 -4
Permanent jobs citing CentOS 10 19 4
As % of all permanent IT jobs located in Hertfordshire 0.41% 0.81% 0.20%
As % of the Operating Systems category 1.52% 2.84% 0.66%
Number of salaries quoted 10 19 4
Average salary £51,250 £59,000 £31,750
Average salary % change year-on-year
-13.13% +85.82%
90% offered a salary of more than £29,800 £27,000 £25,000
10% offered a salary of more than £55,000 £60,000 £41,300
UK excluding London average salary £42,500 £41,750 £38,500
% change year-on-year
+1.79% +8.44%
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
659 670 603
As % of all permanent IT jobs located in Hertfordshire 27.05% 28.40% 30.01%
Number of salaries quoted 533 540 459
Average salary £40,000 £40,000 £37,500
Average salary % change year-on-year
- +6.66%
90% offered a salary of more than £27,500 £19,600 £22,500
10% offered a salary of more than £57,500 £54,500 £60,000
UK excluding London average salary £37,500 £37,000 £37,500
% change year-on-year
+1.35% -1.33%

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 1 September 2015.

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 1 September 2015. 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
St Albans - 5 £55,000 -
Hemel Hempstead +6 2 £29,000 -35.55%
CentOS
East of England

CentOS
Top 30 Related IT Skills in Hertfordshire

For the 6 months to 1 September 2015, 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 25 (100.00%) Linux
2 24 (96.00%) Red Hat
3 23 (92.00%) Apache
4 21 (84.00%) DNS
5 19 (76.00%) MySQL
6 15 (60.00%) Tomcat
6 15 (60.00%) DHCP
6 15 (60.00%) PostgreSQL
7 14 (56.00%) Telecoms
7 14 (56.00%) Finance
7 14 (56.00%) CMS
7 14 (56.00%) Games
7 14 (56.00%) Service Delivery
7 14 (56.00%) HTTP
7 14 (56.00%) Oracle HTTP Server
7 14 (56.00%) E-Commerce
7 14 (56.00%) Oracle
7 14 (56.00%) Java
7 14 (56.00%) SQL
7 14 (56.00%) Online Games
7 14 (56.00%) Online Betting
8 9 (36.00%) nginx
9 8 (32.00%) Varnish
9 8 (32.00%) Firewall
9 8 (32.00%) LAMP
10 7 (28.00%) TCP/IP
11 6 (24.00%) Replication
11 6 (24.00%) Cacti
11 6 (24.00%) SSH
11 6 (24.00%) Opscode Chef

CentOS
Top Related IT Skills in Hertfordshire by Category

For the 6 months to 1 September 2015, 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 23 (92.00%) Apache
2 15 (60.00%) Tomcat
3 14 (56.00%) Oracle HTTP Server
3 14 (56.00%) CMS
4 9 (36.00%) nginx
5 5 (20.00%) Joomla!
5 5 (20.00%) WordPress
6 2 (8.00%) Moodle
7 1 (4.00%) Exchange Server 2010
7 1 (4.00%) Exchange Server 2013
7 1 (4.00%) Blackberry Enterprise Server
7 1 (4.00%) MS Exchange
Applications
1 1 (4.00%) MS Office
Business Applications
1 5 (20.00%) Magento
Communications & Networking
1 21 (84.00%) DNS
2 15 (60.00%) DHCP
3 14 (56.00%) HTTP
4 8 (32.00%) Firewall
5 7 (28.00%) TCP/IP
6 6 (24.00%) SSH
7 5 (20.00%) IMAP
7 5 (20.00%) SSL
7 5 (20.00%) FTP
7 5 (20.00%) POP3
7 5 (20.00%) SMTP
8 3 (12.00%) SAN
9 1 (4.00%) Wi-Fi
9 1 (4.00%) IP Telephony
9 1 (4.00%) Asterisk PBX
9 1 (4.00%) LAN
9 1 (4.00%) VoIP
9 1 (4.00%) WAN
Database & Business Intelligence
1 19 (76.00%) MySQL
2 15 (60.00%) PostgreSQL
Development Applications
1 1 (4.00%) MSI
General
1 14 (56.00%) Telecoms
1 14 (56.00%) Finance
1 14 (56.00%) Games
1 14 (56.00%) Online Betting
Job Titles
1 23 (92.00%) Systems Administrator
1 23 (92.00%) Administrator
2 22 (88.00%) Linux Systems Administrator
2 22 (88.00%) Linux Administrator
3 14 (56.00%) Senior Linux Administrator
3 14 (56.00%) Senior Linux Systems Administrator
3 14 (56.00%) Senior Systems Administrator
4 3 (12.00%) Web Administrator
5 1 (4.00%) Operations Engineer
5 1 (4.00%) Systems Support Engineer
5 1 (4.00%) Systems Engineer
5 1 (4.00%) Systems Support
5 1 (4.00%) Support Engineer
Libraries, Frameworks & Software Standards
1 8 (32.00%) LAMP
2 5 (20.00%) Alternative PHP Cache
Miscellaneous
1 14 (56.00%) Online Games
2 6 (24.00%) Replication
3 5 (20.00%) Clustering
4 1 (4.00%) CCTV
4 1 (4.00%) Streaming Music
4 1 (4.00%) CMDB
4 1 (4.00%) EqualLogic
4 1 (4.00%) Data Centre
Operating Systems
1 25 (100.00%) Linux
2 3 (12.00%) Windows
3 2 (8.00%) Red Hat Enterprise Linux
4 1 (4.00%) Windows 7
4 1 (4.00%) Windows Server 2012
4 1 (4.00%) Ubuntu
4 1 (4.00%) Windows Server 2008
Processes & Methodologies
1 14 (56.00%) Service Delivery
1 14 (56.00%) E-Commerce
2 5 (20.00%) Performance Tuning
2 5 (20.00%) Load Balancing
2 5 (20.00%) Time Management
3 1 (4.00%) Software Deployment
3 1 (4.00%) Configuration Management
Programming Languages
1 14 (56.00%) Java
1 14 (56.00%) SQL
2 5 (20.00%) Bash Shell
2 5 (20.00%) Perl
2 5 (20.00%) PHP
Qualifications
1 1 (4.00%) CCNA
1 1 (4.00%) Cisco Certification
1 1 (4.00%) Microsoft Certification
1 1 (4.00%) RHCE
1 1 (4.00%) MCITP
1 1 (4.00%) RHCSA
Quality Assurance & Compliance
1 5 (20.00%) SLA
2 1 (4.00%) ISO/IEC 27001
System Software
1 8 (32.00%) Varnish
2 5 (20.00%) Sendmail
2 5 (20.00%) iptables
3 4 (16.00%) KVM
4 2 (8.00%) Xen
4 2 (8.00%) VMware Infrastructure
5 1 (4.00%) Active Directory
5 1 (4.00%) VMware ESX
5 1 (4.00%) vSphere
5 1 (4.00%) VMware ESXi
Systems Management
1 6 (24.00%) Cacti
1 6 (24.00%) Opscode Chef
1 6 (24.00%) cPanel
2 5 (20.00%) Nagios
3 1 (4.00%) WSUS
3 1 (4.00%) Plesk
3 1 (4.00%) Opsview
Vendors
1 24 (96.00%) Red Hat
2 14 (56.00%) Oracle
3 3 (12.00%) Microsoft
4 2 (8.00%) Cisco
4 2 (8.00%) Apple
4 2 (8.00%) VMware
5 1 (4.00%) Fortinet
5 1 (4.00%) Symantec
5 1 (4.00%) Adobe
5 1 (4.00%) Dell
5 1 (4.00%) Avaya