Period
to 21 November 2017

The following table provides summary statistics for contract job vacancies advertised in Leeds 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 21 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
6 months to
21 Nov 2017
Same period 2016 Same period 2015
Rank 121 97 130
Rank change year-on-year -24 +33 -50
Contract jobs citing CentOS 16 48 31
As % of all contract IT jobs advertised in Leeds 0.71% 1.85% 0.96%
As % of the Operating Systems category 3.60% 8.53% 4.32%
Number of daily rates quoted 16 47 24
Leeds median daily rate £423 £425 £300
Median daily rate % change year-on-year -0.59% +41.67% +33.33%
10th Percentile £410 £213 £263
90th Percentile £531 £565 £447
West Yorkshire median daily rate £425 £425 £300
% change year-on-year - +41.67% +33.33%
Number of hourly rates quoted 0 0 0
Leeds median hourly rate - - -
West Yorkshire median hourly rate - - -

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 Leeds with a requirement for operating system skills.

All Operating Systems
Leeds
Contract vacancies with a requirement for operating system skills 444 563 718
As % of all contract IT jobs advertised in Leeds 19.62% 21.66% 22.19%
Number of daily rates quoted 298 363 437
Leeds median daily rate £425 £413 £375
Median daily rate % change year-on-year +3.03% +10.00% +20.97%
10th Percentile £209 £245 £198
90th Percentile £543 £560 £525
West Yorkshire median daily rate £420 £400 £375
% change year-on-year +5.00% +6.67% +15.38%
Number of hourly rates quoted 17 23 56
Leeds median hourly rate £12.50 £13.50 £12.50
Median hourly rate % change year-on-year -7.41% +8.00% -5.30%
10th Percentile £10.30 £8.86 £9.08
90th Percentile £26.30 £24.75 £18.75
West Yorkshire median hourly rate £12.50 £13.00 £12.75
% change year-on-year -3.85% +1.96% +6.25%

CentOS
Job Vacancy Trend in Leeds

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

Job vacancy trend for CentOS in Leeds

CentOS
Contractor Daily Rate Trend in Leeds

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

Contractor daily rate trend for CentOS in Leeds

CentOS
Contractor Daily Rate Histogram in Leeds

The daily rate distribution of IT jobs citing CentOS in Leeds over the 6 months to 21 November 2017.

Contractor daily rate histogram for CentOS in Leeds

CentOS
Contractor Hourly Rate Trend in Leeds

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

Contractor hourly rate trend for CentOS in Leeds

For the 6 months to 21 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 Leeds region with a requirement for CentOS.

1 16 (100.00%) Linux
2 11 (68.75%) DevOps
3 10 (62.50%) Red Hat
4 9 (56.25%) Graphite
5 8 (50.00%) Configuration Management
5 8 (50.00%) Bash Shell
6 7 (43.75%) Amazon AWS
6 7 (43.75%) Jenkins
6 7 (43.75%) Opsview
6 7 (43.75%) Python
6 7 (43.75%) Nagios
6 7 (43.75%) Ruby
7 6 (37.50%) Ubuntu
7 6 (37.50%) Red Hat Enterprise Linux
7 6 (37.50%) Git (software)
7 6 (37.50%) Agile Software Development
7 6 (37.50%) Puppet
8 5 (31.25%) Opscode Chef
8 5 (31.25%) New Relic
8 5 (31.25%) DNS
8 5 (31.25%) Kubernetes
8 5 (31.25%) Grafana
9 4 (25.00%) Performance Optimisation
9 4 (25.00%) Cloud Foundry
9 4 (25.00%) VMware
9 4 (25.00%) Unix
9 4 (25.00%) Shell Script
9 4 (25.00%) HTTP
9 4 (25.00%) VMware ESXi
9 4 (25.00%) Splunk

CentOS
Co-occurring IT Skills in Leeds 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 4 (25.00%) Cloud Foundry
2 3 (18.75%) nginx
2 3 (18.75%) Tomcat
Cloud Services
1 7 (43.75%) Amazon AWS
2 4 (25.00%) Heroku
2 4 (25.00%) Microsoft Azure
Communications & Networking
1 5 (31.25%) DNS
2 4 (25.00%) HTTP
3 2 (12.50%) Network Security
4 1 (6.25%) Firewall
4 1 (6.25%) LDAP
Database & Business Intelligence
1 3 (18.75%) MongoDB
1 3 (18.75%) NoSQL
1 3 (18.75%) Redis
Development Applications
1 7 (43.75%) Jenkins
2 6 (37.50%) Git (software)
3 3 (18.75%) Sonatype Nexus
3 3 (18.75%) Vagrant
General
1 3 (18.75%) Games
2 1 (6.25%) Finance
Job Titles
1 10 (62.50%) DevOps Engineer
2 6 (37.50%) Linux Engineer
3 4 (25.00%) Linux DevOps Engineer
3 4 (25.00%) Linux/Unix DevOps
4 3 (18.75%) AWS DevOps
4 3 (18.75%) AWS DevOps Engineer
4 3 (18.75%) AWS Engineer
4 3 (18.75%) Azure DevOps
4 3 (18.75%) Azure DevOps Engineer
4 3 (18.75%) Azure Engineer
5 2 (12.50%) Cloud Engineer
5 2 (12.50%) Linux Scripter
5 2 (12.50%) Nagios Engineer
5 2 (12.50%) Systems Engineer
5 2 (12.50%) WebOps Engineer
6 1 (6.25%) Administrator
6 1 (6.25%) Linux Administrator
6 1 (6.25%) Senior Cloud Engineer
6 1 (6.25%) Senior DevOps Engineer
6 1 (6.25%) Senior Linux Engineer
Libraries, Frameworks & Software Standards
1 3 (18.75%) LAMP
1 3 (18.75%) Memcached
1 3 (18.75%) Node.js
1 3 (18.75%) RabbitMQ
2 2 (12.50%) Elastic Stack
Miscellaneous
1 2 (12.50%) Private Cloud
Operating Systems
1 16 (100.00%) Linux
2 6 (37.50%) Red Hat Enterprise Linux
2 6 (37.50%) Ubuntu
3 4 (25.00%) Unix
4 1 (6.25%) Solaris
4 1 (6.25%) Windows
4 1 (6.25%) Windows Server
Processes & Methodologies
1 11 (68.75%) DevOps
2 8 (50.00%) Configuration Management
3 6 (37.50%) Agile Software Development
4 4 (25.00%) Performance Optimisation
5 3 (18.75%) Continuous Improvement
5 3 (18.75%) Infrastructure Management
5 3 (18.75%) Open Source
5 3 (18.75%) Security Patching
5 3 (18.75%) Software Engineering
6 2 (12.50%) Web Operations
7 1 (6.25%) Scrum
7 1 (6.25%) Stakeholder Management
Programming Languages
1 8 (50.00%) Bash Shell
2 7 (43.75%) Python
2 7 (43.75%) Ruby
3 4 (25.00%) Shell Script
4 3 (18.75%) JavaScript
4 3 (18.75%) PHP
5 2 (12.50%) Perl
Qualifications
1 1 (6.25%) SC Cleared
1 1 (6.25%) Security Cleared
System Software
1 4 (25.00%) VMware ESXi
2 3 (18.75%) Docker
3 1 (6.25%) KVM
3 1 (6.25%) VMware Infrastructure
Systems Management
1 9 (56.25%) Graphite
2 7 (43.75%) Nagios
2 7 (43.75%) Opsview
3 6 (37.50%) Puppet
4 5 (31.25%) Grafana
4 5 (31.25%) Kubernetes
4 5 (31.25%) Opscode Chef
5 3 (18.75%) Icinga
5 3 (18.75%) Packer
5 3 (18.75%) Prometheus
5 3 (18.75%) Rancher
5 3 (18.75%) Terraform
6 2 (12.50%) Ansible
7 1 (6.25%) Red Hat Satellite
7 1 (6.25%) yum
Vendors
1 10 (62.50%) Red Hat
2 5 (31.25%) New Relic
3 4 (25.00%) Splunk
3 4 (25.00%) VMware