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

CentOS Linux
East of England / Hertfordshire
3 months to
25 Jun 2017
Same period 2016 Same period 2015
Rank 132 135 161
Rank change year-on-year +3 +26  
Permanent jobs citing CentOS 17 9 14
As % of all permanent IT jobs advertised in Hertfordshire 0.82% 0.40% 0.49%
As % of the Operating Systems category 3.04% 1.77% 1.65%
Number of salaries quoted 13 9 14
Median salary £40,000 £52,500 £55,000
Median salary % change year-on-year -23.80% -4.54%  
UK excluding London median salary £45,000 £47,500 £40,000
% change year-on-year -5.26% +18.75%  

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 Hertfordshire with a requirement for operating system skills.

Operating System Skills
Hertfordshire
Permanent job vacancies with a requirement for operating system skills 560 508 847
As % of all permanent IT job vacancies advertised in Hertfordshire 26.90% 22.38% 29.44%
Number of salaries quoted 474 406 610
Median salary £37,500 £40,000 £40,000
Median salary % change year-on-year -6.25% -  
90% offered a salary of more than £24,000 £26,000 £26,000
10% offered a salary of more than £60,000 £55,000 £60,000
UK excluding London median salary £37,500 £37,500 £37,500

CentOS
Job Vacancy Trend in Hertfordshire

The job posting trend of jobs advertised in Hertfordshire 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 Hertfordshire

CentOS
Salary Trend in Hertfordshire

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

Salary trend for CentOS in Hertfordshire

CentOS
Salary Histogram in Hertfordshire

The salary distribution of IT jobs citing CentOS in Hertfordshire over the 3 months to 25 June 2017.

Salary histogram for CentOS in Hertfordshire

CentOS
Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the Hertfordshire region over the 3 months to 25 June 2017. 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 Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Watford -2 8 £40,000 -33.33%
Hemel Hempstead 0 4 £21,500 -57.00%
Welwyn Garden City +1 2 £47,500 - 1
CentOS
East of England

For the 6 months to 25 June 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 Hertfordshire region with a requirement for CentOS.

1 32 (100.00%) Linux
2 23 (71.88%) Red Hat
3 22 (68.75%) SAN
3 22 (68.75%) Active Directory
4 18 (56.25%) Windows
4 18 (56.25%) LAMP
5 17 (53.13%) Red Hat Enterprise Linux
6 15 (46.88%) SQL
6 15 (46.88%) Marketing
7 14 (43.75%) Bash Shell
7 14 (43.75%) SQL Server
7 14 (43.75%) IIS
8 12 (37.50%) Open Source
9 11 (34.38%) Nagios
10 10 (31.25%) Opscode Chef
10 10 (31.25%) Puppet
10 10 (31.25%) Ansible
10 10 (31.25%) DevOps
10 10 (31.25%) Data Centre
11 9 (28.13%) Apache
11 9 (28.13%) MySQL
12 8 (25.00%) Unix
12 8 (25.00%) HP
12 8 (25.00%) SMTP
12 8 (25.00%) NAS
12 8 (25.00%) XenServer
12 8 (25.00%) IMAP
12 8 (25.00%) Korn
12 8 (25.00%) VLAN
12 8 (25.00%) SCOM

CentOS
Co-occurring 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 14 (43.75%) IIS
2 9 (28.13%) Apache
3 3 (9.38%) Joomla!
3 3 (9.38%) WordPress
4 1 (3.13%) nginx
4 1 (3.13%) Tomcat
Business Applications
1 3 (9.38%) Magento
1 3 (9.38%) OpenCart
Cloud Services
1 3 (9.38%) Amazon AWS
2 2 (6.25%) Microsoft Azure
3 1 (3.13%) IaaS
Communications & Networking
1 22 (68.75%) SAN
2 8 (25.00%) IMAP
2 8 (25.00%) iSCSI
2 8 (25.00%) NAS
2 8 (25.00%) SMTP
2 8 (25.00%) VLAN
3 3 (9.38%) TCP/IP
Database & Business Intelligence
1 14 (43.75%) SQL Server
2 9 (28.13%) MySQL
3 1 (3.13%) CouchDB
3 1 (3.13%) MongoDB
3 1 (3.13%) Redis
General
1 15 (46.88%) Marketing
Job Titles
1 24 (75.00%) Administrator
1 24 (75.00%) Linux Administrator
2 16 (50.00%) Linux Systems Administrator
2 16 (50.00%) Systems Administrator
3 8 (25.00%) DevOps Administrator
3 8 (25.00%) Junior
3 8 (25.00%) Junior DevOps
3 8 (25.00%) Linux DevOps Administrator
3 8 (25.00%) Linux/Unix DevOps
4 5 (15.63%) Linux Engineer
5 3 (9.38%) IT Engineer
5 3 (9.38%) IT Support
5 3 (9.38%) IT Support Engineer
5 3 (9.38%) Support Engineer
6 2 (6.25%) Linux Systems Engineer
6 2 (6.25%) Systems Engineer
7 1 (3.13%) 1st/2nd Line Support
7 1 (3.13%) AWS Engineer
7 1 (3.13%) Senior Linux Systems Engineer
7 1 (3.13%) Senior Systems Engineer
Libraries, Frameworks & Software Standards
1 18 (56.25%) LAMP
2 1 (3.13%) LEMP Stack
2 1 (3.13%) Memcached
Miscellaneous
1 10 (31.25%) Data Centre
2 3 (9.38%) Computer Science
Operating Systems
1 32 (100.00%) Linux
2 18 (56.25%) Windows
3 17 (53.13%) Red Hat Enterprise Linux
4 8 (25.00%) Unix
5 5 (15.63%) Ubuntu
6 1 (3.13%) Debian
Processes & Methodologies
1 12 (37.50%) Open Source
2 10 (31.25%) DevOps
3 3 (9.38%) Performance Tuning
3 3 (9.38%) Project Management
4 2 (6.25%) E-Commerce
Programming Languages
1 15 (46.88%) SQL
2 14 (43.75%) Bash Shell
3 8 (25.00%) Korn
4 4 (12.50%) Perl
5 3 (9.38%) PHP
5 3 (9.38%) Python
6 1 (3.13%) Ruby
Quality Assurance & Compliance
1 3 (9.38%) SLA
System Software
1 22 (68.75%) Active Directory
2 8 (25.00%) KVM
2 8 (25.00%) XenServer
3 3 (9.38%) VMware Infrastructure
3 3 (9.38%) Xen
4 1 (3.13%) Varnish
Systems Management
1 11 (34.38%) Nagios
2 10 (31.25%) Ansible
2 10 (31.25%) Opscode Chef
2 10 (31.25%) Puppet
3 8 (25.00%) SCOM
4 3 (9.38%) Cacti
4 3 (9.38%) cPanel
4 3 (9.38%) Plesk
5 2 (6.25%) Kubernetes
Vendors
1 23 (71.88%) Red Hat
2 8 (25.00%) HP
3 6 (18.75%) VMware
4 4 (12.50%) Microsoft
5 2 (6.25%) Google
Welwyn Garden City
Tesco PLC
Salary: Competitive
Posted: 9 days ago