The following table provides summary statistics for contract job vacancies advertised in Bristol with a requirement for CentOS skills. Included is a benchmarking guide to the contractor rates 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.

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
South West / Bristol
3 months to
25 Jun 2017
Same period 2016 Same period 2015
Rank 65 - 61
Rank change year-on-year - 0  
Contract jobs citing CentOS 8 0 16
As % of all contract IT jobs advertised in Bristol 0.97% - 1.73%
As % of the Operating Systems category 5.76% - 8.65%
Number of daily rates quoted 8 0 11
Median daily rate £370 - £375
90% offered a daily rate of more than £350 - £325
10% offered a daily rate of more than £415 - £388
UK excluding London median daily rate £460 £425 £375
% change year-on-year +8.23% +13.33%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £47.50 £55.00 -
% change year-on-year -13.63% -  

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

Contract Operating System Skills
Bristol
Contract job vacancies with a requirement for operating system skills 139 176 185
As % of all contract IT job vacancies advertised in Bristol 16.77% 20.95% 20.00%
Number of daily rates quoted 84 111 144
Median daily rate £375 £350 £350
Median daily rate % change year-on-year +7.14% -  
90% offered a daily rate of more than £175 £172 £125
10% offered a daily rate of more than £475 £513 £450
UK excluding London median daily rate £375 £363 £345
% change year-on-year +3.44% +5.07%  
Number of hourly rates quoted 5 11 14
Median hourly rate £15.25 £13.25 £15.25
Median hourly rate % change year-on-year +15.09% -13.11%  
UK excluding London median hourly rate £15.50 £17.00 £16.20
% change year-on-year -8.82% +4.93%  

CentOS
Job Vacancy Trend in Bristol

The job posting trend of jobs advertised in Bristol citing CentOS as a proportion of all contract or permanent IT jobs with a match in the Operating Systems category.

Job vacancy trend for CentOS in Bristol

CentOS
Contractor Daily Rate Trend in Bristol

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

Contractor daily rate trend for CentOS in Bristol

CentOS
Contractor Hourly Rate Trend in Bristol

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing CentOS in Bristol.

Contractor hourly rate trend for CentOS in Bristol

CentOS
Contract Job Locations in Bristol

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the Bristol 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
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Avonmouth - 1 £400 -
CentOS
South West

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

1 18 (100.00%) Linux
2 10 (55.56%) Red Hat Enterprise Linux
2 10 (55.56%) Puppet
3 9 (50.00%) Ubuntu
4 8 (44.44%) Red Hat
4 8 (44.44%) Unix
5 7 (38.89%) Perl
5 7 (38.89%) Amazon AWS
5 7 (38.89%) DevOps
6 6 (33.33%) Windows
6 6 (33.33%) Python
6 6 (33.33%) Java
6 6 (33.33%) VMware Infrastructure
6 6 (33.33%) VMware
7 5 (27.78%) Tomcat
7 5 (27.78%) Bash Shell
8 4 (22.22%) AWS CloudFormation
8 4 (22.22%) Jenkins
8 4 (22.22%) Docker
8 4 (22.22%) Virtual Machines
8 4 (22.22%) Debian
8 4 (22.22%) Agile Software Development
8 4 (22.22%) Security Cleared
9 3 (16.67%) Ruby
9 3 (16.67%) SC Cleared
9 3 (16.67%) Continuous Integration
9 3 (16.67%) Alfresco
9 3 (16.67%) Mule
9 3 (16.67%) Groovy
9 3 (16.67%) Configuration Management

CentOS
Co-occurring IT Skills in Bristol 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 (27.78%) Tomcat
2 3 (16.67%) Alfresco
2 3 (16.67%) Mule
3 2 (11.11%) Apache
3 2 (11.11%) Elasticsearch
4 1 (5.56%) GlassFish
Cloud Services
1 7 (38.89%) Amazon AWS
2 4 (22.22%) AWS CloudFormation
3 1 (5.56%) Amazon EC2
3 1 (5.56%) Amazon ELB
3 1 (5.56%) Amazon S3
3 1 (5.56%) Route 53
Communications & Networking
1 2 (11.11%) Firewall
1 2 (11.11%) LAN
1 2 (11.11%) WAN
2 1 (5.56%) Cisco ASA
2 1 (5.56%) DHCP
2 1 (5.56%) DNS
2 1 (5.56%) F5 BIG-IP LTM
2 1 (5.56%) Internet
2 1 (5.56%) LDAP
2 1 (5.56%) SAN
2 1 (5.56%) VPN
Database & Business Intelligence
1 2 (11.11%) MySQL
1 2 (11.11%) SQL Server
2 1 (5.56%) Apache Cassandra
2 1 (5.56%) Oracle Database
2 1 (5.56%) PostgreSQL
2 1 (5.56%) RDBMS
2 1 (5.56%) Relational Database
Development Applications
1 4 (22.22%) Jenkins
2 3 (16.67%) Git (software)
3 2 (11.11%) Maven
4 1 (5.56%) Subversion
Job Titles
1 7 (38.89%) DevOps Engineer
2 5 (27.78%) AWS Engineer
3 4 (22.22%) AWS DevOps
3 4 (22.22%) AWS DevOps Engineer
3 4 (22.22%) Linux Engineer
3 4 (22.22%) Linux Support
4 3 (16.67%) Administrator
4 3 (16.67%) IT Support
4 3 (16.67%) Java Engineer
4 3 (16.67%) Linux Administrator
4 3 (16.67%) Linux DevOps Engineer
4 3 (16.67%) Linux Systems Administrator
4 3 (16.67%) Linux/Unix DevOps
4 3 (16.67%) Support Officer
4 3 (16.67%) Systems Administrator
5 2 (11.11%) Desktop Support Analyst
5 2 (11.11%) Operations Engineer
5 2 (11.11%) Support Analyst
5 2 (11.11%) Unix Administrator
5 2 (11.11%) Unix Systems Administrator
Libraries, Frameworks & Software Standards
1 3 (16.67%) Elastic Stack
2 2 (11.11%) LAMP
2 2 (11.11%) MCollective
3 1 (5.56%) J2EE
3 1 (5.56%) LAPP Stack
3 1 (5.56%) SAML
3 1 (5.56%) Sensu
3 1 (5.56%) Web Services
Miscellaneous
1 2 (11.11%) Greenfield Project
2 1 (5.56%) Computer Science
Operating Systems
1 18 (100.00%) Linux
2 10 (55.56%) Red Hat Enterprise Linux
3 9 (50.00%) Ubuntu
4 8 (44.44%) Unix
5 6 (33.33%) Windows
6 4 (22.22%) Debian
7 1 (5.56%) FreeBSD
7 1 (5.56%) Solaris
7 1 (5.56%) VMS
7 1 (5.56%) Windows Server 2008
7 1 (5.56%) Windows Server 2012
Processes & Methodologies
1 7 (38.89%) DevOps
2 4 (22.22%) Agile Software Development
3 3 (16.67%) Configuration Management
3 3 (16.67%) Continuous Integration
4 2 (11.11%) Build Automation
4 2 (11.11%) Root Cause Analysis
4 2 (11.11%) Scrum
5 1 (5.56%) Continuous Delivery
5 1 (5.56%) Cybersecurity
5 1 (5.56%) GAP Analysis
5 1 (5.56%) Identity Management
5 1 (5.56%) Open Source
5 1 (5.56%) Patch Management
5 1 (5.56%) Penetration Testing
5 1 (5.56%) Test Automation
5 1 (5.56%) Vulnerability Management
5 1 (5.56%) Web Operations
Programming Languages
1 7 (38.89%) Perl
2 6 (33.33%) Java
2 6 (33.33%) Python
3 5 (27.78%) Bash Shell
4 3 (16.67%) Groovy
4 3 (16.67%) Ruby
5 1 (5.56%) PHP
Qualifications
1 4 (22.22%) Security Cleared
2 3 (16.67%) SC Cleared
3 1 (5.56%) AWS Certification
Quality Assurance & Compliance
1 2 (11.11%) Disclosure Scotland
2 1 (5.56%) ISO/IEC 27001
2 1 (5.56%) PCI DSS
System Software
1 6 (33.33%) VMware Infrastructure
2 4 (22.22%) Docker
2 4 (22.22%) Virtual Machines
3 2 (11.11%) Hyper-V
3 2 (11.11%) vSphere
3 2 (11.11%) Xen
4 1 (5.56%) Active Directory
4 1 (5.56%) Gluster
4 1 (5.56%) Shibboleth
4 1 (5.56%) VMware ESXi
Systems Management
1 10 (55.56%) Puppet
2 2 (11.11%) Ansible
2 2 (11.11%) Bcfg2
2 2 (11.11%) Terraform
2 2 (11.11%) ZABBIX
3 1 (5.56%) Graphite
3 1 (5.56%) HAProxy
3 1 (5.56%) Kibana
3 1 (5.56%) Nessus
3 1 (5.56%) Nexpose
3 1 (5.56%) Opscode Chef
Vendors
1 8 (44.44%) Red Hat
2 6 (33.33%) VMware
3 2 (11.11%) Oracle
4 1 (5.56%) Cisco
4 1 (5.56%) Dell
4 1 (5.56%) F5
4 1 (5.56%) Gemalto
4 1 (5.56%) HP
4 1 (5.56%) Juniper
4 1 (5.56%) Microsoft
4 1 (5.56%) Rapid7