The table below looks at the statistics for CentOS skills in IT contracts advertised for the England region. Included is a guide to the contractor rates offered in IT contracts that have cited CentOS over the 3 months to 31 August 2016 with a comparison to the same period over the previous 2 years.

Note that daily contractor rates and hourly contractor rates are treated separately. When calculating average contractor rates, daily rates are not derived from quoted hourly rates or vice versa.

3 months to
31 Aug 2016
Same period 2015 Same period 2014
CentOS Linux
Rank 272 398 373
Rank change year-on-year
+126 -25
Contract jobs citing CentOS 432 243 252
As % of all contract IT jobs located in England 0.86% 0.46% 0.50%
As % of the Operating Systems category 4.05% 2.11% 2.20%
Number of daily rates quoted 300 144 185
Median daily rate £450 £407 £400
Median daily rate % change year-on-year
+10.56% +1.75%
90% offered a daily rate of more than £311 £300 £225
10% offered a daily rate of more than £570 £525 £507
UK excluding London median daily rate £425 £340 £375
% change year-on-year
+25.00% -9.33%
Number of hourly rates quoted 3 2 0
Median hourly rate £13.50 £36.00 -
Median hourly rate % change year-on-year
-62.50% -
UK excluding London median hourly rate £13.50 £36.00 -
% change year-on-year
-62.50% -
CentOS
UK

The following table is for comparison with the above and provides statistics for the entire Operating Systems category in contract jobs advertised in the England region.

Operating Systems Category
England
Contract IT job ads with a match in the
Operating Systems category
10668 11527 11471
As % of all contract IT jobs located in England 21.26% 21.68% 22.78%
Number of daily rates quoted 6900 6853 6626
Median daily rate £400 £375 £350
Median daily rate % change year-on-year
+6.66% +7.14%
90% offered a daily rate of more than £200 £175 £170
10% offered a daily rate of more than £550 £525 £520
UK excluding London median daily rate £350 £350 £320
% change year-on-year
- +9.37%
Number of hourly rates quoted 549 902 995
Median hourly rate £16.50 £17.00 £16.00
Median hourly rate % change year-on-year
-2.94% +6.25%
90% offered a hourly rate of more than £11.25 £11.50 £11.00
10% offered a hourly rate of more than £42.50 £40.00 £34.50
UK excluding London median hourly rate £16.50 £16.66 £16.00
% change year-on-year
-0.96% +4.12%

CentOS
Jobs Demand Trend in England

The demand trend of contract jobs across the England region citing CentOS as a proportion of all IT contracts with a match in the Operating Systems category.

CentOS Jobs Demand Trend in England

CentOS
Daily Rate Trend in England

This chart provides the 3-month moving average for daily rates quoted in IT contract jobs citing CentOS across the England region.

CentOS Daily Rate Trend in England

CentOS
Daily Rate Histogram in England

This chart provides a histogram of daily rates quoted in contract IT jobs citing CentOS across the England region over the 3 months to 31 August 2016.

CentOS Daily Rate Histogram in England

CentOS
Hourly Rate Trend in England

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

CentOS Hourly Rate Trend in England

CentOS
Contract Job Locations in England

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the England region over the 3 months to 31 August 2016. 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
(Click see detailed
statistics and trends)
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
London +83 272 £500 +17.64% 30
South East +31 41 £438 +14.75% 22
Yorkshire -7 31 £350 +16.66% 4
North West +36 22 £425 +21.42% 7
North East +4 21 £368 -12.23% 1
East Midlands +7 15 £400 -1.71% 4
East of England +27 14 £375 +97.36% 3
South West +11 9 £488 +50.00% 11
West Midlands -19 9 £475 +55.10% 1
CentOS
UK

CentOS
Top 30 Related IT Skills in England

For the 6 months to 31 August 2016, 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 England region with a requirement for CentOS.

1 725 (100.00%) Linux
2 437 (60.28%) DevOps
3 382 (52.69%) Puppet
4 338 (46.62%) Red Hat
5 291 (40.14%) Red Hat Enterprise Linux
6 282 (38.90%) Agile Software Development
7 270 (37.24%) Amazon AWS
7 270 (37.24%) VMware
8 267 (36.83%) Ansible
9 264 (36.41%) Jenkins
10 253 (34.90%) Configuration Management
11 246 (33.93%) Ubuntu
12 228 (31.45%) Continuous Integration
13 226 (31.17%) Apache
14 220 (30.34%) Git (software)
15 215 (29.66%) Ruby
16 210 (28.97%) Docker
17 204 (28.14%) Python
18 193 (26.62%) Security Cleared
19 189 (26.07%) Bash Shell
20 173 (23.86%) PostgreSQL
21 167 (23.03%) SC Cleared
22 159 (21.93%) Scrum
23 158 (21.79%) DNS
24 157 (21.66%) JIRA
25 153 (21.10%) Opscode Chef
26 148 (20.41%) Windows
26 148 (20.41%) Perl
26 148 (20.41%) MySQL
27 143 (19.72%) Java

CentOS
Top Related IT Skills in England 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
1 226 (31.17%) Apache
2 141 (19.45%) Confluence
3 118 (16.28%) Tomcat
4 95 (13.10%) OpenStack
5 78 (10.76%) Elasticsearch
6 47 (6.48%) nginx
7 31 (4.28%) JBoss
8 22 (3.03%) IIS
9 20 (2.76%) Mule ESB
10 18 (2.48%) Jetty
11 16 (2.21%) WildFly
12 10 (1.38%) MS Exchange
13 9 (1.24%) Cloud Foundry
14 8 (1.10%) Apache Spark
15 7 (0.97%) SAS
15 7 (0.97%) WebSphere
16 6 (0.83%) WebSphere Application Server
17 5 (0.69%) Exchange Server 2010
17 5 (0.69%) GlassFish
17 5 (0.69%) MediaWiki
Applications
1 72 (9.93%) HipChat
2 26 (3.59%) MS Excel
3 18 (2.48%) MS Office
4 10 (1.38%) MS Visio
5 1 (0.14%) Adobe Creative Suite
5 1 (0.14%) MS PowerPoint
5 1 (0.14%) MS Project
Business Applications
1 8 (1.10%) SAP Oil and Gas
2 1 (0.14%) Infor M3
Cloud Services
1 270 (37.24%) Amazon AWS
2 39 (5.38%) GitHub
3 31 (4.28%) Microsoft Azure
4 30 (4.14%) Amazon EC2
5 24 (3.31%) PaaS
6 23 (3.17%) IaaS
7 19 (2.62%) Amazon S3
8 13 (1.79%) Google Cloud Platform
8 13 (1.79%) SaaS
9 12 (1.66%) Route 53
10 11 (1.52%) DigitalOcean
11 9 (1.24%) Amazon ElastiCache
12 8 (1.10%) AWS CloudFormation
13 6 (0.83%) Amazon ELB
14 5 (0.69%) Amazon EMR
14 5 (0.69%) AWS Elastic Beanstalk
14 5 (0.69%) Google Apps
15 4 (0.55%) Rackspace Cloud
16 3 (0.41%) Cloud Computing
16 3 (0.41%) Heroku
Communications & Networking
1 158 (21.79%) DNS
2 78 (10.76%) SSH
3 77 (10.62%) VPN
4 74 (10.21%) Firewall
5 70 (9.66%) OpenLDAP
6 66 (9.10%) OpenVPN
6 66 (9.10%) TCP/IP
7 48 (6.62%) SAN
8 38 (5.24%) LDAP
9 33 (4.55%) DHCP
10 26 (3.59%) iSCSI
11 25 (3.45%) Internet
12 23 (3.17%) HTTP
12 23 (3.17%) Reverse Proxy
13 22 (3.03%) SSL
14 21 (2.90%) Cisco Nexus
15 20 (2.76%) DMZ
16 17 (2.34%) Network Security
17 16 (2.21%) Fibre Channel
17 16 (2.21%) SMTP
Database & Business Intelligence
1 173 (23.86%) PostgreSQL
2 148 (20.41%) MySQL
3 97 (13.38%) Hadoop
4 70 (9.66%) MongoDB
5 65 (8.97%) NoSQL
6 30 (4.14%) SQL Server
7 27 (3.72%) Redis
8 17 (2.34%) Big Data
8 17 (2.34%) Relational Database
9 14 (1.93%) Amazon RDS
10 10 (1.38%) SQL Server 2008
11 8 (1.10%) HBase
11 8 (1.10%) SQL Server 2014
12 6 (0.83%) MariaDB
13 5 (0.69%) Apache Cassandra
14 4 (0.55%) RDBMS
15 3 (0.41%) Amazon DynamoDB
15 3 (0.41%) Data Lake
15 3 (0.41%) Oracle Database
15 3 (0.41%) SQL Server 2012
Development Applications
1 264 (36.41%) Jenkins
2 220 (30.34%) Git (software)
3 157 (21.66%) JIRA
4 112 (15.45%) Maven
5 99 (13.66%) Sonatype Nexus
6 84 (11.59%) Ant
7 82 (11.31%) SonarQube
8 77 (10.62%) JIRA Agile
9 65 (8.97%) Bitbucket
10 63 (8.69%) JUnit
10 63 (8.69%) Liquibase
11 57 (7.86%) Subversion
12 25 (3.45%) Gerrit
13 24 (3.31%) Mercurial
14 23 (3.17%) Hudson
15 22 (3.03%) GitLab
16 19 (2.62%) Gradle
17 17 (2.34%) Vagrant
18 16 (2.21%) Artifactory
18 16 (2.21%) Atlassian Bamboo
General
1 46 (6.34%) Finance
2 18 (2.48%) Retail
3 17 (2.34%) Back Office
4 14 (1.93%) Publishing
4 14 (1.93%) Telecoms
5 10 (1.38%) Games
5 10 (1.38%) Manufacturing
5 10 (1.38%) Marketing
6 8 (1.10%) Electronics
7 6 (0.83%) Front Office
7 6 (0.83%) Legal
8 3 (0.41%) Advertising
8 3 (0.41%) Banking
8 3 (0.41%) Pharmaceutical
9 1 (0.14%) Billing
9 1 (0.14%) Financial Institution
Job Titles
1 292 (40.28%) DevOps Engineer
2 157 (21.66%) Linux Engineer
3 109 (15.03%) Linux/Unix DevOps
4 82 (11.31%) Linux DevOps Engineer
5 81 (11.17%) Administrator
6 77 (10.62%) AWS DevOps
7 72 (9.93%) Senior DevOps
8 66 (9.10%) AWS Engineer
8 66 (9.10%) Systems Administrator
9 59 (8.14%) Senior DevOps Engineer
10 55 (7.59%) Linux Administrator
11 51 (7.03%) Consultant
12 45 (6.21%) Linux Systems Administrator
13 44 (6.07%) Continuous Deployment Engineer
14 40 (5.52%) DevOps Consultant
15 39 (5.38%) Developer
16 32 (4.41%) Lead DevOps
17 28 (3.86%) Infrastructure Engineer
18 26 (3.59%) Senior Linux Engineer
18 26 (3.59%) Systems Engineer
Libraries, Frameworks & Software Standards
1 95 (13.10%) LAMP
2 80 (11.03%) ELK Stack
3 68 (9.38%) Software Packaging
4 67 (9.24%) MCollective
5 56 (7.72%) Web Services
6 41 (5.66%) LAPP Stack
7 29 (4.00%) REST
8 28 (3.86%) RabbitMQ
9 27 (3.72%) LEMP Stack
10 24 (3.31%) XML
11 19 (2.62%) jQuery
11 19 (2.62%) RESTful
12 17 (2.34%) J2EE
12 17 (2.34%) JSON
12 17 (2.34%) Node.js
13 15 (2.07%) SOAP
14 13 (1.79%) ActiveMQ
14 13 (1.79%) HTML
15 12 (1.66%) CakePHP
16 11 (1.52%) Apache Camel
Miscellaneous
1 55 (7.59%) Public Cloud
2 34 (4.69%) Data Centre
3 20 (2.76%) Clustering
4 19 (2.62%) Private Cloud
5 18 (2.48%) Computer Science
5 18 (2.48%) Management Information System
6 16 (2.21%) Enterprise Cloud
6 16 (2.21%) Wiki
7 15 (2.07%) Mobile App
8 13 (1.79%) Analytical Skills
8 13 (1.79%) Visualisation
9 11 (1.52%) Digital Media
10 10 (1.38%) NHS
11 9 (1.24%) Enterprise Software
12 8 (1.10%) Derivative
13 7 (0.97%) EMC VNX
13 7 (0.97%) Hybrid Cloud
14 6 (0.83%) Device Driver
14 6 (0.83%) Hedge funds
14 6 (0.83%) Replication
Operating Systems
1 725 (100.00%) Linux
2 291 (40.14%) Red Hat Enterprise Linux
3 246 (33.93%) Ubuntu
4 148 (20.41%) Windows
5 98 (13.52%) Unix
6 51 (7.03%) Fedora
6 51 (7.03%) Windows Server
7 40 (5.52%) Debian
8 31 (4.28%) Solaris
8 31 (4.28%) Windows Server 2008
9 20 (2.76%) Windows Server 2003
9 20 (2.76%) Windows Server 2012
10 14 (1.93%) CoreOS
11 12 (1.66%) Mac OS X
11 12 (1.66%) SUSE
12 10 (1.38%) AIX
13 6 (0.83%) Windows 7
14 5 (0.69%) Apple iOS
14 5 (0.69%) Mac OS X Server
14 5 (0.69%) Windows Mobile
Processes & Methodologies
1 437 (60.28%) DevOps
2 282 (38.90%) Agile Software Development
3 253 (34.90%) Configuration Management
4 228 (31.45%) Continuous Integration
5 159 (21.93%) Scrum
6 138 (19.03%) Continuous Delivery
7 86 (11.86%) Service Management
8 77 (10.62%) Open Source
9 73 (10.07%) Workflow
10 66 (9.10%) Identity Management
11 64 (8.83%) Coaching
12 60 (8.28%) Load Balancing
13 59 (8.14%) ITIL
14 58 (8.00%) Case Management
15 46 (6.34%) Continuous Deployment
16 44 (6.07%) Stakeholder Management
17 43 (5.93%) SDLC
18 40 (5.52%) High Availability
19 36 (4.97%) Migration
20 33 (4.55%) Software Engineering
Programming Languages
1 215 (29.66%) Ruby
2 204 (28.14%) Python
3 189 (26.07%) Bash Shell
4 148 (20.41%) Perl
5 143 (19.72%) Java
6 120 (16.55%) PHP
7 107 (14.76%) Shell Script
8 68 (9.38%) SQL
9 46 (6.34%) JavaScript
10 33 (4.55%) PowerShell
11 22 (3.03%) Groovy
12 15 (2.07%) C
13 12 (1.66%) C++
14 8 (1.10%) Go
15 7 (0.97%) AWK
15 7 (0.97%) sed
16 6 (0.83%) Korn
17 5 (0.69%) C#
18 4 (0.55%) Jython
19 1 (0.14%) MATLAB
Qualifications
1 193 (26.62%) Security Cleared
2 167 (23.03%) SC Cleared
3 41 (5.66%) Degree
4 39 (5.38%) BPSS Clearance
5 35 (4.83%) CTC Cleared
6 25 (3.45%) Cisco Certification
7 19 (2.62%) RHCE
8 18 (2.48%) CCNP
9 13 (1.79%) CCNA
10 8 (1.10%) DV Cleared
11 7 (0.97%) Microsoft Certification
12 6 (0.83%) VMware Certified Professional (VCP)
13 5 (0.69%) AWS Certification
13 5 (0.69%) MCSE
14 4 (0.55%) PRINCE2 Certification
15 3 (0.41%) BC Cleared
15 3 (0.41%) VCP5
16 2 (0.28%) CEH
16 2 (0.28%) RHCA
16 2 (0.28%) RHCT
Quality Assurance & Compliance
1 28 (3.86%) QA
2 20 (2.76%) Disclosure Scotland
3 11 (1.52%) ISO/IEC 27001
4 7 (0.97%) PCI DSS
5 3 (0.41%) SLA
6 1 (0.14%) HMG Security Policy Framework
System Software
1 210 (28.97%) Docker
2 135 (18.62%) VMware Infrastructure
3 101 (13.93%) vCloud
4 79 (10.90%) Squid
5 77 (10.62%) Active Directory
6 75 (10.34%) Postfix
7 59 (8.14%) Virtual Machines
8 51 (7.03%) vSphere
9 35 (4.83%) KVM
10 27 (3.72%) Samba
11 25 (3.45%) Hyper-V
11 25 (3.45%) iptables
12 22 (3.03%) NFS
12 22 (3.03%) VMware ESXi
12 22 (3.03%) Xen
13 15 (2.07%) VMware Server
14 9 (1.24%) VirtualBox
14 9 (1.24%) XenServer
15 7 (0.97%) Sendmail
15 7 (0.97%) StorNext
Systems Management
1 382 (52.69%) Puppet
2 267 (36.83%) Ansible
3 153 (21.10%) Opscode Chef
4 121 (16.69%) Kubernetes
5 116 (16.00%) Terraform
6 112 (15.45%) ZABBIX
7 105 (14.48%) logstash
8 99 (13.66%) Kibana
9 82 (11.31%) Nagios
10 68 (9.38%) Rancher
11 47 (6.48%) HAProxy
12 39 (5.38%) Salt
13 21 (2.90%) SCCM
14 18 (2.48%) Grafana
14 18 (2.48%) Packer
15 16 (2.21%) Rundeck
15 16 (2.21%) Zenoss
16 14 (1.93%) Icinga
16 14 (1.93%) vRealize
17 11 (1.52%) Cacti
Vendors
1 338 (46.62%) Red Hat
2 270 (37.24%) VMware
3 110 (15.17%) Atlassian
4 95 (13.10%) Oracle
5 78 (10.76%) Sonatype
6 65 (8.97%) Microsoft
7 51 (7.03%) Cisco
8 30 (4.14%) EMC
9 25 (3.45%) Dell
9 25 (3.45%) HP
9 25 (3.45%) NetApp
10 23 (3.17%) Splunk
11 20 (2.76%) Google
12 18 (2.48%) Rackspace
13 16 (2.21%) Citrix
14 15 (2.07%) Black Duck
14 15 (2.07%) SaltStack
14 15 (2.07%) Veracode
15 13 (1.79%) New Relic
16 12 (1.66%) F5
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