Period
to 24 November 2017

The following table provides summary statistics for contract job vacancies advertised in Hertfordshire with a requirement for CentOS skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited CentOS over the 6 months to 24 November 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

CentOS Linux
East of England > Hertfordshire
6 months to
24 Nov 2017
Same period 2016 Same period 2015
Rank 98 94 -
Rank change year-on-year -4 - +112
Contract jobs citing CentOS 9 6 0
As % of all contract IT jobs advertised in Hertfordshire 0.56% 0.43% -
As % of the Operating Systems category 2.69% 2.03% -
Number of daily rates quoted 9 6 0
Hertfordshire median daily rate £450 £388 -
Median daily rate % change year-on-year +16.13% - -
East of England median daily rate £415 £375 £320
% change year-on-year +10.67% +17.19% +68.42%
Number of hourly rates quoted 0 0 0
Hertfordshire median hourly rate - - -
East of England median hourly rate - £13.50 -

CentOS is in the Operating Systems category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Hertfordshire with a requirement for operating system skills.

All Operating Systems
Hertfordshire
Contract vacancies with a requirement for operating system skills 335 296 411
As % of all contract IT jobs advertised in Hertfordshire 21.02% 21.25% 25.51%
Number of daily rates quoted 157 155 202
Hertfordshire median daily rate £370 £365 £336
Median daily rate % change year-on-year +1.37% +8.55% -3.93%
10th Percentile £120 £167 £120
90th Percentile £560 £523 £488
East of England median daily rate £350 £350 £350
Number of hourly rates quoted 52 19 48
Hertfordshire median hourly rate £14.50 £14.50 £15.00
Median hourly rate % change year-on-year - -3.33% +3.45%
10th Percentile £11.03 £10.00 £8.75
90th Percentile £47.13 £20.00 £38.75
East of England median hourly rate £21.28 £16.50 £17.00
% change year-on-year +28.94% -2.94% +3.03%

CentOS
Job Vacancy Trend in Hertfordshire

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

Job vacancy trend for CentOS in Hertfordshire

CentOS
Contractor Daily Rate Trend in Hertfordshire

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing CentOS in Hertfordshire.

Contractor daily rate trend for CentOS in Hertfordshire

CentOS
Contractor Daily Rate Histogram in Hertfordshire

The daily rate distribution of IT jobs citing CentOS in Hertfordshire over the 6 months to 24 November 2017.

Contractor daily rate histogram for CentOS in Hertfordshire

CentOS
Contract Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the Hertfordshire region over the 6 months to 24 November 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Hemel Hempstead +4 4 £375 -
CentOS
East of England

For the 6 months to 24 November 2017, IT contractor jobs citing CentOS also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Hertfordshire region with a requirement for CentOS.

1 9 (100.00%) Linux
2 8 (88.89%) Red Hat
3 6 (66.67%) Python
3 6 (66.67%) Perl
3 6 (66.67%) Bash Shell
4 4 (44.44%) Red Hat Enterprise Linux
4 4 (44.44%) iptables
4 4 (44.44%) Opscode Chef
4 4 (44.44%) Ansible
4 4 (44.44%) Linux Command Line
4 4 (44.44%) E-Commerce
4 4 (44.44%) Cisco
4 4 (44.44%) VPN
4 4 (44.44%) Firewall
4 4 (44.44%) IPsec
5 3 (33.33%) Retail
5 3 (33.33%) Configuration Management
5 3 (33.33%) Terraform
6 2 (22.22%) DevOps
6 2 (22.22%) OpenStack
6 2 (22.22%) Google
6 2 (22.22%) Ubuntu
6 2 (22.22%) VMware
6 2 (22.22%) VMware Infrastructure
6 2 (22.22%) Unix
7 1 (11.11%) DNS
7 1 (11.11%) HOOD
7 1 (11.11%) Wireless
7 1 (11.11%) RHCA
7 1 (11.11%) Telecoms

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 2 (22.22%) OpenStack
Cloud Services
1 1 (11.11%) Amazon AWS
1 1 (11.11%) Google Cloud Platform
1 1 (11.11%) Microsoft Azure
Communications & Networking
1 4 (44.44%) Firewall
1 4 (44.44%) IPsec
1 4 (44.44%) VPN
2 1 (11.11%) DHCP
2 1 (11.11%) DNS
2 1 (11.11%) iSCSI
2 1 (11.11%) LDAP
2 1 (11.11%) OpenLDAP
2 1 (11.11%) SNMP
2 1 (11.11%) TCP/IP
2 1 (11.11%) Wireless
Development Applications
1 1 (11.11%) Jenkins
General
1 3 (33.33%) Retail
2 1 (11.11%) Telecoms
Job Titles
1 4 (44.44%) Network Engineer
2 2 (22.22%) Administrator
2 2 (22.22%) DevOps Engineer
2 2 (22.22%) Linux Administrator
2 2 (22.22%) Linux Systems Administrator
2 2 (22.22%) Senior DevOps
2 2 (22.22%) Senior DevOps Engineer
2 2 (22.22%) Systems Administrator
3 1 (11.11%) Consultant
3 1 (11.11%) Linux Engineer
Libraries, Frameworks & Software Standards
1 1 (11.11%) JSON
1 1 (11.11%) XML
Miscellaneous
1 4 (44.44%) Linux Command Line
2 1 (11.11%) Data Centre
2 1 (11.11%) Public Cloud
Operating Systems
1 9 (100.00%) Linux
2 4 (44.44%) Red Hat Enterprise Linux
3 2 (22.22%) Ubuntu
3 2 (22.22%) Unix
4 1 (11.11%) CoreOS
4 1 (11.11%) Debian
Processes & Methodologies
1 4 (44.44%) E-Commerce
2 3 (33.33%) Configuration Management
3 2 (22.22%) DevOps
4 1 (11.11%) Data Centre Operations
4 1 (11.11%) HOOD
4 1 (11.11%) Project Management
4 1 (11.11%) Stakeholder Management
Programming Languages
1 6 (66.67%) Bash Shell
1 6 (66.67%) Perl
1 6 (66.67%) Python
2 1 (11.11%) AWK
2 1 (11.11%) sed
Qualifications
1 1 (11.11%) RHCA
1 1 (11.11%) RHCE
System Software
1 4 (44.44%) iptables
2 2 (22.22%) VMware Infrastructure
3 1 (11.11%) Docker
3 1 (11.11%) LXC
Systems Management
1 4 (44.44%) Ansible
1 4 (44.44%) Opscode Chef
2 3 (33.33%) Terraform
3 1 (11.11%) Kubernetes
3 1 (11.11%) Mesos
3 1 (11.11%) Puppet
3 1 (11.11%) Red Hat Satellite
3 1 (11.11%) ZABBIX
Vendors
1 8 (88.89%) Red Hat
2 4 (44.44%) Cisco
3 2 (22.22%) Google
3 2 (22.22%) VMware
4 1 (11.11%) Dell
4 1 (11.11%) EMC
4 1 (11.11%) HP
4 1 (11.11%) Microsoft