The table below looks at the statistics for CentOS skills in IT contracts advertised across the UK. Included is a guide to the contractor rates offered in IT contracts that have cited CentOS over the 3 months to 30 May 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
30 May 2016
Same period 2015 Same period 2014
CentOS Linux
Rank 363 399 429
Rank change year-on-year
+36 +30
Contract jobs citing CentOS 301 230 190
As % of all contract IT jobs located in the UK 0.56% 0.42% 0.35%
As % of the Operating Systems category 2.45% 1.89% 1.54%
Number of daily rates quoted 216 147 121
Median daily rate £450 £400 £375
Median daily rate % change year-on-year
+12.50% +6.66%
90% offered a daily rate of more than £340 £227 £183
10% offered a daily rate of more than £560 £505 £475
UK excluding London median daily rate £425 £375 £350
% change year-on-year
+13.33% +7.14%
Number of hourly rates quoted 2 0 4
Median hourly rate £55.00 - £16.75
UK excluding London median hourly rate £55.00 - £16.75

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

Operating Systems Category
UK
Contract IT job ads with a match in the
Operating Systems category
12300 12184 12320
As % of all contract IT jobs located in the UK 22.92% 22.11% 22.71%
Number of daily rates quoted 7704 7056 7027
Median daily rate £390 £350 £350
Median daily rate % change year-on-year
+11.42% -
90% offered a daily rate of more than £200 £170 £163
10% offered a daily rate of more than £550 £525 £500
UK excluding London median daily rate £365 £345 £313
% change year-on-year
+5.79% +10.40%
Number of hourly rates quoted 638 1001 1062
Median hourly rate £16.50 £16.50 £15.81
Median hourly rate % change year-on-year
- +4.36%
90% offered a hourly rate of more than £11.42 £11.00 £11.00
10% offered a hourly rate of more than £42.00 £39.00 £32.50
UK excluding London median hourly rate £16.50 £16.00 £15.50
% change year-on-year
+3.12% +3.22%

CentOS
Jobs Demand Trend

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

CentOS Jobs Demand Trend in the UK

CentOS
Daily Rate Trend

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

CentOS Daily Rate Trend in the UK

CentOS
Daily Rate Histogram

This chart provides a histogram of daily rates quoted in contract IT jobs citing CentOS within the UK over the 3 months to 30 May 2016.

CentOS Daily Rate Histogram in the UK

CentOS
Hourly Rate Trend

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

CentOS Hourly Rate Trend in the UK

CentOS
Top 30 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the UK over the 3 months to 30 May 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
England +56 291 £450 +16.12% 101
London +67 161 £500 +11.11% 42
South East +20 60 £450 +20.00% 22
Hampshire +13 24 £340 +29.52% 4
Yorkshire -12 21 £450 +87.50% 9
West Yorkshire -5 18 £450 +100.00% 7
Leeds -9 14 £463 +105.55% 7
North West -30 13 £388 -7.18% 10
West Midlands - 13 £400 - 7
City of London +45 12 £439 +0.28% 11
Berkshire -4 11 £450 +28.57% 11
Surrey - 9 £425 - 7
Buckinghamshire +18 8 £500 -
South West -22 8 £525 +40.00% 5
Worcestershire - 8 £400 - 1
Wiltshire +1 7 £525 +23.52%
Cheshire -10 7 £444 +4.41%
Milton Keynes +14 6 £500 -
East of England +11 6 £425 - 3
East Midlands +7 6 £275 -37.14% 3
Croydon -13 6 £480 +9.71%
Malvern - 6 £400 - 1
Salisbury - 5 £525 -
Portsmouth - 5 £288 -
Macclesfield - 5 £444 -
Cambridgeshire +14 4 £475 - 3
Scotland - 4 £296 - 7
Guildford - 4 £401 - 1
Kent - 4 £450 -
Cambridge +4 3 £413 - 3

CentOS
Top 30 Related IT Skills

For the 6 months to 30 May 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 with a requirement for CentOS.

1 573 (100.00%) Linux
2 310 (54.10%) DevOps
3 285 (49.74%) Puppet
4 275 (47.99%) Red Hat
5 252 (43.98%) Red Hat Enterprise Linux
6 226 (39.44%) Ubuntu
7 216 (37.70%) Agile Software Development
8 205 (35.78%) Bash Shell
9 203 (35.43%) VMware
10 193 (33.68%) Configuration Management
11 192 (33.51%) Java
12 183 (31.94%) Jenkins
13 176 (30.72%) Amazon AWS
14 173 (30.19%) Git (software)
15 172 (30.02%) Python
16 154 (26.88%) Continuous Integration
17 139 (24.26%) Windows
18 138 (24.08%) Apache
18 138 (24.08%) VMware Infrastructure
19 129 (22.51%) Ruby
20 128 (22.34%) Ansible
21 126 (21.99%) Security Cleared
22 122 (21.29%) Perl
23 111 (19.37%) MySQL
24 106 (18.50%) SC Cleared
24 106 (18.50%) Opscode Chef
25 103 (17.98%) Tomcat
26 93 (16.23%) Unix
27 91 (15.88%) Scrum
28 89 (15.53%) OpenStack

CentOS
Top Related IT Skills 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
1 138 (24.08%) Apache
2 103 (17.98%) Tomcat
3 89 (15.53%) OpenStack
4 63 (10.99%) Confluence
5 35 (6.11%) nginx
6 34 (5.93%) Elasticsearch
7 31 (5.41%) JBoss
8 21 (3.66%) IIS
9 15 (2.62%) Jetty
9 15 (2.62%) Node.js
9 15 (2.62%) WebSphere
10 10 (1.75%) WebSphere Application Server
11 8 (1.40%) Apache Spark
12 7 (1.22%) Mule ESB
13 6 (1.05%) Cloud Foundry
13 6 (1.05%) WebSphere Process Server
14 5 (0.87%) SAS
15 4 (0.70%) Drupal
15 4 (0.70%) Exchange Server 2010
15 4 (0.70%) MS Exchange
Applications
1 29 (5.06%) MS Excel
2 26 (4.54%) MS Office
3 14 (2.44%) HipChat
4 10 (1.75%) MS Visio
5 3 (0.52%) MS PowerPoint
6 2 (0.35%) 3ds Max
6 2 (0.35%) Acrobat
6 2 (0.35%) Adobe Illustrator
6 2 (0.35%) GIMP
6 2 (0.35%) Photoshop
7 1 (0.17%) MS Project
Business Applications
1 7 (1.22%) SAP Oil and Gas
2 2 (0.35%) Magento
Cloud Services
1 176 (30.72%) Amazon AWS
2 26 (4.54%) Amazon EC2
3 23 (4.01%) Microsoft Azure
4 21 (3.66%) GitHub
5 18 (3.14%) Google Cloud Platform
6 17 (2.97%) SaaS
7 16 (2.79%) AWS CloudFormation
7 16 (2.79%) IaaS
8 13 (2.27%) PaaS
9 11 (1.92%) Amazon S3
10 8 (1.40%) AWS Elastic Beanstalk
11 7 (1.22%) Amazon ELB
11 7 (1.22%) Route 53
12 6 (1.05%) OpenShift
13 5 (0.87%) Amazon EMR
13 5 (0.87%) CloudFront
14 4 (0.70%) Amazon CloudWatch
14 4 (0.70%) Cloud Computing
14 4 (0.70%) Rackspace Cloud
15 3 (0.52%) Amazon ElastiCache
Communications & Networking
1 79 (13.79%) DNS
2 71 (12.39%) TCP/IP
3 56 (9.77%) Firewall
4 39 (6.81%) SAN
5 33 (5.76%) VPN
6 24 (4.19%) DHCP
6 24 (4.19%) HTTP
7 22 (3.84%) SMTP
8 19 (3.32%) Cisco Nexus
8 19 (3.32%) iSCSI
9 17 (2.97%) FTP
9 17 (2.97%) Internet
10 16 (2.79%) LDAP
11 15 (2.62%) Fibre Channel
12 12 (2.09%) LAN
12 12 (2.09%) Network Security
12 12 (2.09%) SNMP
12 12 (2.09%) SSH
12 12 (2.09%) SSL
13 11 (1.92%) IMAP
Database & Business Intelligence
1 111 (19.37%) MySQL
2 69 (12.04%) MongoDB
3 61 (10.65%) PostgreSQL
4 53 (9.25%) NoSQL
5 31 (5.41%) SQL Server
6 27 (4.71%) Hadoop
7 26 (4.54%) Big Data
8 25 (4.36%) Relational Database
9 18 (3.14%) Apache Cassandra
10 17 (2.97%) Redis
11 12 (2.09%) HBase
12 10 (1.75%) CouchDB
13 9 (1.57%) MariaDB
14 7 (1.22%) Amazon RDS
14 7 (1.22%) Apache Hive
14 7 (1.22%) Couchbase
14 7 (1.22%) SQL Server 2008
15 6 (1.05%) Oracle Database
16 5 (0.87%) Amazon DynamoDB
16 5 (0.87%) SQL Server 2014
Development Applications
1 183 (31.94%) Jenkins
2 173 (30.19%) Git (software)
3 88 (15.36%) Maven
4 77 (13.44%) JIRA
5 40 (6.98%) Subversion
6 27 (4.71%) Vagrant
7 25 (4.36%) SonarQube
7 25 (4.36%) Sonatype Nexus
8 23 (4.01%) Atlassian Bamboo
9 21 (3.66%) Selenium
10 20 (3.49%) Gradle
11 18 (3.14%) Cucumber
11 18 (3.14%) Mocha
12 17 (2.97%) Ant
12 17 (2.97%) Hudson
13 16 (2.79%) Appium
14 14 (2.44%) TeamCity
15 12 (2.09%) Artifactory
16 11 (1.92%) IntelliJ
17 10 (1.75%) Mercurial
General
1 44 (7.68%) Finance
2 21 (3.66%) Games
3 15 (2.62%) Retail
4 12 (2.09%) Telecoms
5 9 (1.57%) Marketing
6 8 (1.40%) Manufacturing
7 7 (1.22%) Electronics
8 4 (0.70%) Back Office
8 4 (0.70%) Banking
9 3 (0.52%) Pharmaceutical
9 3 (0.52%) Publishing
9 3 (0.52%) Spanish Language
10 2 (0.35%) Advertising
11 1 (0.17%) Financial Institution
11 1 (0.17%) Local Government
Job Titles
1 218 (38.05%) DevOps Engineer
2 157 (27.40%) Linux Engineer
3 91 (15.88%) Linux/Unix DevOps
4 77 (13.44%) Linux DevOps Engineer
5 55 (9.60%) Administrator
6 43 (7.50%) Developer
7 42 (7.33%) Linux Administrator
8 37 (6.46%) Senior Linux Engineer
9 35 (6.11%) AWS Engineer
9 35 (6.11%) Systems Administrator
10 33 (5.76%) Operations Engineer
11 32 (5.58%) Systems Engineer
12 28 (4.89%) Consultant
12 28 (4.89%) Linux Systems Administrator
12 28 (4.89%) Senior DevOps Engineer
13 25 (4.36%) Infrastructure Engineer
14 24 (4.19%) Cloud Engineer
14 24 (4.19%) Linux Systems Engineer
15 20 (3.49%) Automation Engineer
16 19 (3.32%) VMware Engineer
Libraries, Frameworks & Software Standards
1 67 (11.69%) LAMP
2 64 (11.17%) Web Services
3 40 (6.98%) ELK Stack
4 35 (6.11%) RESTful
5 28 (4.89%) MCollective
6 26 (4.54%) LAPP Stack
7 23 (4.01%) RabbitMQ
8 20 (3.49%) HTML
9 19 (3.32%) jQuery
9 19 (3.32%) Sensu
10 16 (2.79%) Chai
10 16 (2.79%) J2EE
11 15 (2.62%) CSS
12 14 (2.44%) Apache Camel
12 14 (2.44%) Kafka
12 14 (2.44%) LEMP Stack
13 13 (2.27%) SOAP
13 13 (2.27%) Spring
14 12 (2.09%) REST
14 12 (2.09%) XML
Miscellaneous
1 29 (5.06%) Data Centre
2 26 (4.54%) Private Cloud
3 14 (2.44%) Management Information System
4 12 (2.09%) Wiki
5 10 (1.75%) Digital Media
5 10 (1.75%) Mobile App
5 10 (1.75%) PlayStation
5 10 (1.75%) Public Cloud
6 9 (1.57%) Derivative
7 8 (1.40%) Algorithms
7 8 (1.40%) Analytical Skills
8 7 (1.22%) Data Structures
8 7 (1.22%) EMC VNX
8 7 (1.22%) User Experience
9 6 (1.05%) Enterprise Cloud
9 6 (1.05%) Enterprise Software
9 6 (1.05%) NHS
10 5 (0.87%) Clustering
10 5 (0.87%) PKI
10 5 (0.87%) Statistics
Operating Systems
1 573 (100.00%) Linux
2 252 (43.98%) Red Hat Enterprise Linux
3 226 (39.44%) Ubuntu
4 139 (24.26%) Windows
5 93 (16.23%) Unix
6 38 (6.63%) Debian
7 36 (6.28%) Windows Server
8 35 (6.11%) Fedora
9 34 (5.93%) Windows Server 2008
10 31 (5.41%) Solaris
11 30 (5.24%) Windows Server 2012
12 20 (3.49%) AIX
12 20 (3.49%) SUSE
12 20 (3.49%) Windows Server 2003
13 11 (1.92%) Mac OS X
14 8 (1.40%) Windows 7
15 7 (1.22%) Mac OS
16 5 (0.87%) Windows Mobile
17 4 (0.70%) Windows 8
18 3 (0.52%) Data ONTAP
Processes & Methodologies
1 310 (54.10%) DevOps
2 216 (37.70%) Agile Software Development
3 193 (33.68%) Configuration Management
4 154 (26.88%) Continuous Integration
5 91 (15.88%) Scrum
6 68 (11.87%) Open Source
7 53 (9.25%) Build Automation
8 51 (8.90%) Continuous Delivery
9 42 (7.33%) ITIL
10 29 (5.06%) E-Commerce
11 28 (4.89%) TDD
12 27 (4.71%) High Availability
12 27 (4.71%) Service Management
13 22 (3.84%) Load Balancing
13 22 (3.84%) Microservices
13 22 (3.84%) Migration
14 20 (3.49%) SOA
15 19 (3.32%) SDLC
15 19 (3.32%) Service Delivery
16 18 (3.14%) Software Engineering
Programming Languages
1 205 (35.78%) Bash Shell
2 192 (33.51%) Java
3 172 (30.02%) Python
4 129 (22.51%) Ruby
5 122 (21.29%) Perl
6 80 (13.96%) PHP
7 57 (9.95%) SQL
8 50 (8.73%) JavaScript
9 42 (7.33%) Shell Script
10 30 (5.24%) PowerShell
11 13 (2.27%) C
12 12 (2.09%) C++
12 12 (2.09%) Groovy
13 9 (1.57%) Korn
14 8 (1.40%) AWK
14 8 (1.40%) C#
15 7 (1.22%) Scala
15 7 (1.22%) sed
16 3 (0.52%) Go
16 3 (0.52%) VB
Qualifications
1 126 (21.99%) Security Cleared
2 106 (18.50%) SC Cleared
3 23 (4.01%) Degree
4 21 (3.66%) RHCE
5 18 (3.14%) Cisco Certification
6 15 (2.62%) CCNA
7 13 (2.27%) CCNP
8 11 (1.92%) DV Cleared
9 8 (1.40%) BPSS Clearance
9 8 (1.40%) MCSE
9 8 (1.40%) Microsoft Certification
10 7 (1.22%) VMware Certified Professional (VCP)
11 5 (0.87%) AWS Certification
12 4 (0.70%) VCP5
13 3 (0.52%) MCTS
13 3 (0.52%) RHCSA
14 2 (0.35%) CCDA
14 2 (0.35%) CCSA
14 2 (0.35%) CCSE
14 2 (0.35%) RHCT
Quality Assurance & Compliance
1 11 (1.92%) Disclosure Scotland
1 11 (1.92%) ISO/IEC 27001
1 11 (1.92%) SLA
2 10 (1.75%) QA
3 6 (1.05%) PCI DSS
4 1 (0.17%) HMG Security Policy Framework
System Software
1 138 (24.08%) VMware Infrastructure
2 87 (15.18%) Docker
3 57 (9.95%) Active Directory
4 56 (9.77%) vSphere
5 36 (6.28%) KVM
6 29 (5.06%) vCloud
7 23 (4.01%) Samba
7 23 (4.01%) VMware ESXi
8 22 (3.84%) NFS
9 17 (2.97%) Hyper-V
10 14 (2.44%) iptables
11 10 (1.75%) Squid
12 9 (1.57%) VMware Server
13 8 (1.40%) Dovecot
13 8 (1.40%) Sendmail
14 7 (1.22%) Postfix
14 7 (1.22%) SpamAssassin
14 7 (1.22%) StorNext
14 7 (1.22%) Xen
15 5 (0.87%) XenServer
Systems Management
1 285 (49.74%) Puppet
2 128 (22.34%) Ansible
3 106 (18.50%) Opscode Chef
4 76 (13.26%) Nagios
5 50 (8.73%) ZABBIX
6 35 (6.11%) logstash
7 34 (5.93%) Salt
8 29 (5.06%) HAProxy
9 24 (4.19%) Graphite
9 24 (4.19%) Terraform
10 21 (3.66%) Kibana
11 18 (3.14%) Cacti
12 14 (2.44%) Zenoss
13 13 (2.27%) Packer
14 11 (1.92%) Kubernetes
14 11 (1.92%) OVSD
14 11 (1.92%) Rundeck
15 10 (1.75%) SCOM
15 10 (1.75%) Xymon
16 9 (1.57%) vRealize
Vendors
1 275 (47.99%) Red Hat
2 203 (35.43%) VMware
3 71 (12.39%) Microsoft
4 54 (9.42%) Cisco
5 48 (8.38%) Oracle
6 43 (7.50%) Atlassian
7 30 (5.24%) HP
8 29 (5.06%) EMC
9 25 (4.36%) NetApp
10 20 (3.49%) Splunk
11 18 (3.14%) Google
12 17 (2.97%) Dell
13 14 (2.44%) IBM
14 13 (2.27%) New Relic
15 10 (1.75%) Juniper
15 10 (1.75%) Zend
16 9 (1.57%) Sonatype
17 8 (1.40%) Black Duck
17 8 (1.40%) ServiceNow
17 8 (1.40%) Veracode
London
Vivid Resourcing
Rate: £500 - £550 per day
Posted: 3 days ago
Woking, Surrey
Venturi
Rate: £400 - £475 per day
Posted: 2 days ago
North West England
Amoria Bond
Rate: £400 - £450 per day
Posted: 6 days ago
Central London / West End
Digitech Resourcing Ltd
Rate: Up to £550 per day
Posted: 4 days ago
Swansea, West Glamorgan
Digitech Resourcing Ltd
Rate: Up to £530 per day
Posted: 4 days ago
East London
DCV Technologies
Rate: From £350 to £375 per day
Posted: 4 days ago
London
Salt
Rate: £450 - £500 per day
Posted: 5 days ago
Holborn, London
Reed Business Information
Posted: 12 days ago
South East London
People Source Consulting
Rate: £500 - £600 per day
Posted: 12 days ago
Coventry
Real Staffing
Rate: £425 - £450 per day + competitive
Posted: 13 days ago
Merseyside
Robert Walters UK
Rate: Competitive Market Day Rates
Posted: 21 days ago
Glasgow
Cathcart Associates
Rate: £292 per day
Posted: 20 days ago
London
Real Staffing
Rate: £375 - £500 per day
Posted: 27 days ago