The following table provides summary statistics for contract job vacancies advertised in Birmingham 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 28 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
West Midlands / Birmingham
3 months to
28 Jun 2017
Same period 2016 Same period 2015
Rank 54 71 -
Rank change year-on-year +17 -  
Contract jobs citing CentOS 3 1 0
As % of all contract IT jobs advertised in Birmingham 0.47% 0.12% -
As % of the Operating Systems category 3.06% 0.70% -
Number of daily rates quoted 2 1 0
Median daily rate £375 £400 -
Median daily rate % change year-on-year -6.25% -  
UK excluding London median daily rate £460 £425 £350
% change year-on-year +8.23% +21.42%  
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 Birmingham with a requirement for operating system skills.

Contract Operating System Skills
Birmingham
Contract job vacancies with a requirement for operating system skills 98 143 130
As % of all contract IT job vacancies advertised in Birmingham 15.34% 17.70% 17.91%
Number of daily rates quoted 132 221 244
Median daily rate £325 £338 £340
Median daily rate % change year-on-year -3.70% -0.73%  
90% offered a daily rate of more than £170 £168 £133
10% offered a daily rate of more than £544 £550 £438
UK excluding London median daily rate £375 £363 £348
% change year-on-year +3.44% +4.31%  
Number of hourly rates quoted 13 21 65
Median hourly rate £14.22 £11.80 £21.50
Median hourly rate % change year-on-year +20.46% -45.11%  
90% offered a hourly rate of more than £10.00 £10.25 £10.63
10% offered a hourly rate of more than £17.30 £12.75 £28.00
UK excluding London median hourly rate £15.50 £17.00 £16.50
% change year-on-year -8.82% +3.03%  

CentOS
Job Vacancy Trend in Birmingham

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

Job vacancy trend for CentOS in Birmingham

CentOS
Contractor Daily Rate Trend in Birmingham

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

Contractor daily rate trend for CentOS in Birmingham

CentOS
Contractor Daily Rate Histogram in Birmingham

The daily rate distribution of IT jobs citing CentOS in Birmingham over the 3 months to 28 June 2017.

Contractor daily rate histogram for CentOS in Birmingham

For the 6 months to 28 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 Birmingham region with a requirement for CentOS.

1 5 (100.00%) Linux
2 3 (60.00%) Windows
2 3 (60.00%) JIRA
2 3 (60.00%) Microsoft Azure
2 3 (60.00%) Amazon AWS
2 3 (60.00%) Confluence
2 3 (60.00%) Puppet
2 3 (60.00%) Elasticsearch
2 3 (60.00%) Ansible
2 3 (60.00%) Docker
2 3 (60.00%) DevOps
2 3 (60.00%) Public Cloud
2 3 (60.00%) Terraform
2 3 (60.00%) Virtual Environments
3 1 (20.00%) iptables
3 1 (20.00%) Node.js
3 1 (20.00%) Bash Shell
3 1 (20.00%) nginx
3 1 (20.00%) Perl
3 1 (20.00%) Red Hat
3 1 (20.00%) PostgreSQL
3 1 (20.00%) Clustering
3 1 (20.00%) Ubuntu

CentOS
Co-occurring IT Skills in Birmingham 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 (60.00%) Confluence
1 3 (60.00%) Elasticsearch
2 1 (20.00%) nginx
Cloud Services
1 3 (60.00%) Amazon AWS
1 3 (60.00%) Microsoft Azure
Database & Business Intelligence
1 1 (20.00%) PostgreSQL
Development Applications
1 3 (60.00%) JIRA
Job Titles
1 3 (60.00%) DevOps Engineer
1 3 (60.00%) Lead DevOps
1 3 (60.00%) Lead DevOps Engineer
2 1 (20.00%) Administrator
2 1 (20.00%) Consultant
2 1 (20.00%) Linux Administrator
Libraries, Frameworks & Software Standards
1 1 (20.00%) Node.js
Miscellaneous
1 3 (60.00%) Public Cloud
2 1 (20.00%) Clustering
Operating Systems
1 5 (100.00%) Linux
2 3 (60.00%) Windows
3 1 (20.00%) Ubuntu
Processes & Methodologies
1 3 (60.00%) DevOps
1 3 (60.00%) Virtual Environments
Programming Languages
1 1 (20.00%) Bash Shell
1 1 (20.00%) Perl
System Software
1 3 (60.00%) Docker
2 1 (20.00%) iptables
Systems Management
1 3 (60.00%) Ansible
1 3 (60.00%) Puppet
1 3 (60.00%) Terraform
Vendors
1 1 (20.00%) Red Hat