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 8 December 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
8 Dec 2016
Same period 2015 Same period 2014
CentOS Linux
Rank 281 340 311
Rank change year-on-year
+59 -29
Contract jobs citing CentOS 363 303 340
As % of all contract IT jobs located in England 0.79% 0.60% 0.66%
As % of the Operating Systems category 3.74% 2.79% 2.83%
Number of daily rates quoted 270 209 254
Median daily rate £475 £450 £418
Median daily rate % change year-on-year
+5.55% +7.78%
90% offered a daily rate of more than £325 £342 £250
10% offered a daily rate of more than £575 £566 £525
UK excluding London median daily rate £450 £409 £375
% change year-on-year
+10.02% +9.06%
Number of hourly rates quoted 2 1 0
Median hourly rate £17.00 £50.50 -
Median hourly rate % change year-on-year
-66.33% -
UK excluding London median hourly rate £18.00 £50.50 -
% change year-on-year
-64.35% -
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
9694 10841 11993
As % of all contract IT jobs located in England 21.06% 21.45% 23.25%
Number of daily rates quoted 6131 6442 7220
Median daily rate £398 £388 £355
Median daily rate % change year-on-year
+2.58% +9.15%
90% offered a daily rate of more than £175 £175 £170
10% offered a daily rate of more than £550 £550 £515
UK excluding London median daily rate £350 £350 £330
% change year-on-year
- +6.06%
Number of hourly rates quoted 624 917 1041
Median hourly rate £16.50 £16.50 £16.00
Median hourly rate % change year-on-year
- +3.12%
90% offered a hourly rate of more than £12.00 £10.50 £10.50
10% offered a hourly rate of more than £47.79 £42.46 £32.50
UK excluding London median hourly rate £16.50 £16.50 £16.00
% change year-on-year
- +3.12%

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 8 December 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 8 December 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 +16 216 £500 +9.64% 28
South East +51 74 £450 +10.02% 30
North West +16 20 £450 +29.49% 13
South West +28 18 £425 -12.82% 7
Yorkshire +3 17 £450 -11.41% 6
East of England -4 4 £438 +21.52% 2
West Midlands - 4 £415 - 7
East Midlands - 3 £463 - 3
North East -31 1 £550 +50.68% 1
South Coast - 1 £450 -
CentOS
UK

CentOS
Top 30 Related IT Skills in England

For the 6 months to 8 December 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.

1 794 (100.00%) Linux
2 512 (64.48%) DevOps
3 461 (58.06%) Puppet
4 376 (47.36%) Jenkins
5 362 (45.59%) Ansible
6 356 (44.84%) Red Hat Enterprise Linux
7 332 (41.81%) Agile Software Development
8 328 (41.31%) Red Hat
9 323 (40.68%) Docker
10 320 (40.30%) Amazon AWS
11 318 (40.05%) VMware
12 287 (36.15%) Ruby
13 285 (35.89%) Continuous Integration
14 267 (33.63%) Git (software)
14 267 (33.63%) Configuration Management
14 267 (33.63%) Apache
15 264 (33.25%) Ubuntu
16 260 (32.75%) Python
17 252 (31.74%) Security Cleared
18 247 (31.11%) Bash Shell
19 230 (28.97%) PostgreSQL
20 214 (26.95%) SC Cleared
21 202 (25.44%) Scrum
22 195 (24.56%) JIRA
23 187 (23.55%) Kubernetes
24 184 (23.17%) Terraform
25 182 (22.92%) DNS
26 177 (22.29%) Confluence
27 164 (20.65%) Opscode Chef
28 163 (20.53%) VMware Infrastructure

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
1 267 (33.63%) Apache
2 177 (22.29%) Confluence
3 112 (14.11%) Elasticsearch
4 106 (13.35%) Tomcat
5 86 (10.83%) nginx
6 72 (9.07%) OpenStack
7 36 (4.53%) Jetty
8 32 (4.03%) WildFly
9 28 (3.53%) IIS
9 28 (3.53%) Mule ESB
10 22 (2.77%) JBoss
11 12 (1.51%) MS Exchange
11 12 (1.51%) WebSphere
12 11 (1.39%) Apache Spark
13 8 (1.01%) SAS
14 7 (0.88%) Cloud Foundry
15 6 (0.76%) Apache Qpid
16 5 (0.63%) Exchange Server 2010
16 5 (0.63%) GlassFish
17 4 (0.50%) Exchange Server 2000
Applications
1 93 (11.71%) HipChat
2 8 (1.01%) MS Excel
2 8 (1.01%) MS Office
3 2 (0.25%) Adobe Creative Suite
4 1 (0.13%) Adobe Illustrator
4 1 (0.13%) Photoshop
Business Applications
1 4 (0.50%) Infor M3
1 4 (0.50%) SAP Oil and Gas
2 1 (0.13%) IBM Operational Decision Manager
2 1 (0.13%) Magento
Cloud Services
1 320 (40.30%) Amazon AWS
2 60 (7.56%) GitHub
3 55 (6.93%) Amazon EC2
4 50 (6.30%) Microsoft Azure
5 45 (5.67%) Amazon S3
6 31 (3.90%) Route 53
7 24 (3.02%) AWS CloudFormation
8 18 (2.27%) IaaS
9 17 (2.14%) Amazon CloudWatch
10 16 (2.02%) Amazon ElastiCache
10 16 (2.02%) Virtual Private Cloud
11 15 (1.89%) Google Cloud Platform
12 14 (1.76%) Amazon ELB
12 14 (1.76%) AWS Lambda
13 12 (1.51%) DigitalOcean
14 11 (1.39%) PaaS
15 8 (1.01%) Amazon SQS
15 8 (1.01%) AWS CloudTrail
16 7 (0.88%) AWS Elastic Beanstalk
17 6 (0.76%) Azure Active Directory
Communications & Networking
1 182 (22.92%) DNS
2 138 (17.38%) VPN
3 102 (12.85%) OpenLDAP
3 102 (12.85%) SSH
4 97 (12.22%) OpenVPN
5 89 (11.21%) Firewall
6 68 (8.56%) TCP/IP
7 58 (7.30%) LDAP
8 49 (6.17%) Reverse Proxy
9 44 (5.54%) SAN
10 34 (4.28%) IPsec
10 34 (4.28%) SSL
11 27 (3.40%) DHCP
12 26 (3.27%) Cisco Nexus
13 23 (2.90%) HTTP
13 23 (2.90%) SMTP
14 20 (2.52%) DMZ
15 17 (2.14%) Internet
16 14 (1.76%) iSCSI
16 14 (1.76%) Network Security
Database & Business Intelligence
1 230 (28.97%) PostgreSQL
2 126 (15.87%) Hadoop
3 122 (15.37%) MySQL
4 60 (7.56%) NoSQL
5 47 (5.92%) MongoDB
6 38 (4.79%) Amazon RDS
7 27 (3.40%) SQL Server
8 21 (2.64%) Redis
9 16 (2.02%) Big Data
9 16 (2.02%) Oracle Database
10 14 (1.76%) Oracle Database 11g
11 12 (1.51%) Amazon DynamoDB
12 10 (1.26%) Relational Database
13 7 (0.88%) Apache Cassandra
14 5 (0.63%) Apache Hive
14 5 (0.63%) RDBMS
14 5 (0.63%) SQL Server 2008
14 5 (0.63%) SQL Server 2012
15 4 (0.50%) Ingres
15 4 (0.50%) MariaDB
Development Applications
1 376 (47.36%) Jenkins
2 267 (33.63%) Git (software)
3 195 (24.56%) JIRA
4 134 (16.88%) Maven
5 115 (14.48%) Sonatype Nexus
6 112 (14.11%) JIRA Agile
7 106 (13.35%) SonarQube
8 105 (13.22%) Ant
9 100 (12.59%) Bitbucket
10 96 (12.09%) JUnit
11 93 (11.71%) Liquibase
12 43 (5.42%) Subversion
13 41 (5.16%) GitLab
14 38 (4.79%) Gerrit
15 36 (4.53%) Vagrant
16 33 (4.16%) Mercurial
17 32 (4.03%) Hudson
18 27 (3.40%) Atlassian Bamboo
19 20 (2.52%) TeamCity
20 14 (1.76%) Artifactory
General
1 33 (4.16%) Finance
2 16 (2.02%) Back Office
3 15 (1.89%) Telecoms
4 11 (1.39%) Publishing
5 10 (1.26%) Legal
6 9 (1.13%) Retail
7 7 (0.88%) Front Office
8 6 (0.76%) Manufacturing
8 6 (0.76%) Marketing
9 4 (0.50%) Electronics
10 3 (0.38%) Advertising
11 2 (0.25%) Banking
12 1 (0.13%) Billing
12 1 (0.13%) Games
12 1 (0.13%) Pharmaceutical
Job Titles
1 328 (41.31%) DevOps Engineer
2 120 (15.11%) Linux Engineer
3 117 (14.74%) Administrator
3 117 (14.74%) AWS DevOps
4 100 (12.59%) Systems Administrator
5 99 (12.47%) Linux/Unix DevOps
6 94 (11.84%) Senior DevOps
7 86 (10.83%) Consultant
8 83 (10.45%) Linux Administrator
9 81 (10.20%) AWS Engineer
10 76 (9.57%) Linux Systems Administrator
11 68 (8.56%) DevOps Consultant
12 61 (7.68%) Linux DevOps Engineer
13 60 (7.56%) Senior DevOps Engineer
14 44 (5.54%) Developer
15 35 (4.41%) AWS Consultant
15 35 (4.41%) Lead DevOps
16 33 (4.16%) Infrastructure Engineer
17 31 (3.90%) Senior Consultant
18 30 (3.78%) Senior DevOps Consultant
Libraries, Frameworks & Software Standards
1 119 (14.99%) ELK Stack
2 106 (13.35%) MCollective
3 98 (12.34%) Software Packaging
4 74 (9.32%) LAMP
5 57 (7.18%) LAPP Stack
6 47 (5.92%) Web Services
7 39 (4.91%) RabbitMQ
8 38 (4.79%) LEMP Stack
9 26 (3.27%) Node.js
10 22 (2.77%) REST
11 16 (2.02%) XML
12 14 (1.76%) HTML
13 13 (1.64%) jQuery
14 12 (1.51%) ActiveMQ
14 12 (1.51%) JSON
14 12 (1.51%) Middleware
15 11 (1.39%) SOAP
16 10 (1.26%) .NET
16 10 (1.26%) CSS
17 9 (1.13%) J2EE
Miscellaneous
1 71 (8.94%) Public Cloud
2 48 (6.05%) Data Centre
3 23 (2.90%) Analytical Skills
4 22 (2.77%) Computer Science
5 21 (2.64%) Clustering
6 14 (1.76%) Private Cloud
7 12 (1.51%) Mobile App
8 10 (1.26%) Management Information System
8 10 (1.26%) Replication
8 10 (1.26%) Visualisation
9 9 (1.13%) PKI
9 9 (1.13%) Wiki
10 8 (1.01%) Algorithms
10 8 (1.01%) Enterprise Cloud
10 8 (1.01%) NHS
11 7 (0.88%) Hedge funds
11 7 (0.88%) Hybrid Cloud
12 6 (0.76%) Embedded Systems
13 5 (0.63%) Freedom of Information
13 5 (0.63%) Freedom of Information Act
Operating Systems
1 794 (100.00%) Linux
2 356 (44.84%) Red Hat Enterprise Linux
3 264 (33.25%) Ubuntu
4 119 (14.99%) Windows
5 86 (10.83%) Unix
6 47 (5.92%) Debian
7 29 (3.65%) Windows Server
8 25 (3.15%) Fedora
9 22 (2.77%) Solaris
10 19 (2.39%) Windows Server 2008
11 17 (2.14%) CoreOS
11 17 (2.14%) SUSE
11 17 (2.14%) Windows Server 2012
12 13 (1.64%) RancherOS
12 13 (1.64%) VyOS
13 10 (1.26%) Windows Server 2003
14 6 (0.76%) Windows 2000
14 6 (0.76%) Windows 7
15 5 (0.63%) Apple iOS
15 5 (0.63%) VMS
Processes & Methodologies
1 512 (64.48%) DevOps
2 332 (41.81%) Agile Software Development
3 285 (35.89%) Continuous Integration
4 267 (33.63%) Configuration Management
5 202 (25.44%) Scrum
6 151 (19.02%) Continuous Delivery
7 108 (13.60%) Service Management
8 103 (12.97%) Load Balancing
9 99 (12.47%) Workflow
10 96 (12.09%) Identity Management
11 86 (10.83%) Coaching
12 74 (9.32%) Case Management
13 71 (8.94%) Open Source
14 69 (8.69%) Stakeholder Management
15 54 (6.80%) Mentoring
16 53 (6.68%) ITIL
17 41 (5.16%) Migration
17 41 (5.16%) SDLC
18 35 (4.41%) Automated Testing
19 32 (4.03%) Continuous Deployment
Programming Languages
1 287 (36.15%) Ruby
2 260 (32.75%) Python
3 247 (31.11%) Bash Shell
4 162 (20.40%) Java
5 147 (18.51%) Perl
6 130 (16.37%) Shell Script
7 96 (12.09%) PHP
8 67 (8.44%) SQL
9 54 (6.80%) JavaScript
10 38 (4.79%) PowerShell
11 24 (3.02%) C
12 23 (2.90%) C++
13 20 (2.52%) Groovy
14 11 (1.39%) Go
15 8 (1.01%) C#
16 6 (0.76%) Korn
16 6 (0.76%) PL/SQL
17 5 (0.63%) R
18 4 (0.50%) Scala
19 3 (0.38%) C-shell
Qualifications
1 252 (31.74%) Security Cleared
2 214 (26.95%) SC Cleared
3 47 (5.92%) CTC Cleared
4 44 (5.54%) Degree
5 37 (4.66%) BPSS Clearance
6 23 (2.90%) DV Cleared
7 19 (2.39%) Cisco Certification
8 16 (2.02%) CCNP
9 13 (1.64%) AWS Certification
9 13 (1.64%) VMware Certified Professional (VCP)
10 10 (1.26%) CCNA
11 9 (1.13%) RHCE
12 6 (0.76%) CEH
12 6 (0.76%) RHCT
13 4 (0.50%) BC Cleared
13 4 (0.50%) Microsoft Certification
14 3 (0.38%) CESG Certified Professional
14 3 (0.38%) PRINCE2 Certification
15 2 (0.25%) RHCA
15 2 (0.25%) RHCSA
Quality Assurance & Compliance
1 44 (5.54%) QA
2 12 (1.51%) Disclosure Scotland
3 11 (1.39%) PCI DSS
4 1 (0.13%) SLA
System Software
1 323 (40.68%) Docker
2 163 (20.53%) VMware Infrastructure
3 138 (17.38%) vCloud
4 108 (13.60%) Squid
5 102 (12.85%) Postfix
6 64 (8.06%) Active Directory
7 63 (7.93%) Virtual Machines
8 37 (4.66%) vSphere
9 35 (4.41%) Xen
10 17 (2.14%) iptables
11 16 (2.02%) KVM
11 16 (2.02%) VMware ESXi
12 11 (1.39%) VMware Server
13 10 (1.26%) VirtualBox
14 8 (1.01%) Samba
14 8 (1.01%) Sendmail
15 7 (0.88%) Hyper-V
15 7 (0.88%) NFS
16 6 (0.76%) Dovecot
17 5 (0.63%) VMware ESX
Systems Management
1 461 (58.06%) Puppet
2 362 (45.59%) Ansible
3 187 (23.55%) Kubernetes
4 184 (23.17%) Terraform
5 164 (20.65%) Opscode Chef
6 162 (20.40%) ZABBIX
7 140 (17.63%) logstash
8 135 (17.00%) Kibana
9 104 (13.10%) Rancher
10 74 (9.32%) Nagios
11 69 (8.69%) HAProxy
12 31 (3.90%) Packer
13 25 (3.15%) Salt
14 23 (2.90%) Consul
15 20 (2.52%) SCCM
16 17 (2.14%) Grafana
17 15 (1.89%) vRealize
18 13 (1.64%) Icinga
19 11 (1.39%) SELinux
20 10 (1.26%) Oracle ZFS
Vendors
1 328 (41.31%) Red Hat
2 318 (40.05%) VMware
3 137 (17.25%) Atlassian
4 122 (15.37%) Oracle
5 101 (12.72%) Sonatype
6 54 (6.80%) Cisco
7 43 (5.42%) Microsoft
8 27 (3.40%) Splunk
9 25 (3.15%) AppDynamics
10 24 (3.02%) Google
10 24 (3.02%) SaltStack
11 22 (2.77%) New Relic
12 21 (2.64%) EMC
13 18 (2.27%) HP
14 15 (1.89%) Rackspace
15 13 (1.64%) Vyatta
16 12 (1.51%) Dell
17 9 (1.13%) Citrix
17 9 (1.13%) PagerDuty
18 8 (1.01%) RightScale
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