The following table provides summary statistics for contract job vacancies advertised in Sheffield 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 23 March 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.

3 months to
23 Mar 2017
Same period 2016 Same period 2015
CentOS Linux
South Yorkshire / Sheffield
Rank - 48 -
Contract jobs citing CentOS 0 4 0
As % of all contract IT jobs advertised in Sheffield - 0.94% -
As % of the Operating Systems category - 3.28% -
Number of daily rates quoted 0 4 0
Median daily rate - £475 -
UK excluding London median daily rate £475 £425 £350
% change year-on-year +11.76% +21.42%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £17.50 £8.50 £47.50
% change year-on-year +105.88% -82.10%  

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 Sheffield with a requirement for operating system skills.

Contract Operating System Skills
Sheffield
Contract job vacancies with a requirement for operating system skills 111 122 28
As % of all contract IT job vacancies advertised in Sheffield 29.52% 28.57% 11.02%
Number of daily rates quoted 67 90 10
Median daily rate £425 £400 £400
Median daily rate % change year-on-year +6.25% -  
90% offered a daily rate of more than £335 £288 £250
10% offered a daily rate of more than £550 £525 £525
UK excluding London median daily rate £388 £363 £335
% change year-on-year +6.89% +8.20%  
Number of hourly rates quoted 0 1 7
Median hourly rate - £17.50 £10.50
Median hourly rate % change year-on-year - +66.66%  
UK excluding London median hourly rate £15.15 £16.50 £15.50
% change year-on-year -8.18% +6.45%  

CentOS
Job Vacancy Trend in Sheffield

The job posting trend of jobs advertised in Sheffield 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 Sheffield

CentOS
Contractor Daily Rate Trend in Sheffield

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

Contractor daily rate trend for CentOS in Sheffield

CentOS
Top 30 Related IT Skills in Sheffield

For the 6 months to 23 March 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 Sheffield region with a requirement for CentOS.

1 4 (100.00%) Java
1 4 (100.00%) SQL
1 4 (100.00%) Linux
1 4 (100.00%) Agile Software Development
1 4 (100.00%) Ansible
2 3 (75.00%) logstash
2 3 (75.00%) GlusterFS
2 3 (75.00%) Kibana
2 3 (75.00%) Elastic Stack
2 3 (75.00%) TDD
2 3 (75.00%) PostgreSQL
2 3 (75.00%) GitHub
2 3 (75.00%) Elasticsearch
3 2 (50.00%) Apache Camel
3 2 (50.00%) Apache ServiceMix
3 2 (50.00%) ZABBIX
3 2 (50.00%) nginx
3 2 (50.00%) Tomcat
3 2 (50.00%) ActiveMQ
3 2 (50.00%) Jetty
3 2 (50.00%) Apache CXF
3 2 (50.00%) SOAP
4 1 (25.00%) Continuous Deployment
4 1 (25.00%) Linux Command Line
4 1 (25.00%) Amazon ElastiCache
4 1 (25.00%) AWS CloudFormation
4 1 (25.00%) Packer
4 1 (25.00%) DevOps
4 1 (25.00%) SaltStack
4 1 (25.00%) Git (software)

CentOS
Top Related IT Skills in Sheffield 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 3 (75.00%) Elasticsearch
2 2 (50.00%) Apache ServiceMix
2 2 (50.00%) Jetty
2 2 (50.00%) nginx
2 2 (50.00%) Tomcat
3 1 (25.00%) Alfresco
3 1 (25.00%) Confluence
Cloud Services
1 3 (75.00%) GitHub
2 1 (25.00%) Amazon AWS
2 1 (25.00%) Amazon EC2
2 1 (25.00%) Amazon ElastiCache
2 1 (25.00%) Amazon ELB
2 1 (25.00%) Amazon S3
2 1 (25.00%) AWS CloudFormation
2 1 (25.00%) CloudFront
Database & Business Intelligence
1 3 (75.00%) PostgreSQL
2 1 (25.00%) Amazon RDS
2 1 (25.00%) Redis
2 1 (25.00%) SQL Server
Development Applications
1 1 (25.00%) Atlassian Bamboo
1 1 (25.00%) Git (software)
1 1 (25.00%) Jenkins
1 1 (25.00%) JIRA
1 1 (25.00%) Vagrant
Job Titles
1 3 (75.00%) Developer
1 3 (75.00%) Java Developer
2 1 (25.00%) DevOps Engineer
2 1 (25.00%) Elasticsearch Developer
Libraries, Frameworks & Software Standards
1 3 (75.00%) Elastic Stack
2 2 (50.00%) ActiveMQ
2 2 (50.00%) Apache Camel
2 2 (50.00%) Apache CXF
2 2 (50.00%) SOAP
3 1 (25.00%) RabbitMQ
Miscellaneous
1 1 (25.00%) Linux Command Line
Operating Systems
1 4 (100.00%) Linux
Processes & Methodologies
1 4 (100.00%) Agile Software Development
2 3 (75.00%) TDD
3 1 (25.00%) Continuous Deployment
3 1 (25.00%) DevOps
Programming Languages
1 4 (100.00%) Java
1 4 (100.00%) SQL
2 1 (25.00%) Bash Shell
2 1 (25.00%) PHP
2 1 (25.00%) Python
System Software
1 3 (75.00%) GlusterFS
Systems Management
1 4 (100.00%) Ansible
2 3 (75.00%) Kibana
2 3 (75.00%) logstash
3 2 (50.00%) ZABBIX
4 1 (25.00%) Opscode Chef
4 1 (25.00%) Packer
4 1 (25.00%) Puppet
Vendors
1 1 (25.00%) New Relic
1 1 (25.00%) SaltStack