The table below looks at the statistics for CentOS skills in IT contracts advertised for the London region. Included is a guide to the contractor rates offered in IT contracts that have cited CentOS over the 3 months to 31 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
31 May 2016
Same period 2015 Same period 2014
CentOS Linux
Rank 261 335 373
Rank change year-on-year
+74 +38
Contract jobs citing CentOS 164 94 50
As % of all contract IT jobs located in London 0.76% 0.42% 0.22%
As % of the Operating Systems category 3.47% 1.96% 0.98%
Number of daily rates quoted 114 59 39
Median daily rate £500 £450 £400
Median daily rate % change year-on-year
+11.11% +12.50%
90% offered a daily rate of more than £400 £325 £295
10% offered a daily rate of more than £594 £538 £525
UK excluding London median daily rate £425 £375 £350
% change year-on-year
+13.33% +7.14%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £55.00 - £16.75
CentOS
England

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

Operating Systems Category
London
Contract IT job ads with a match in the
Operating Systems category
4724 4804 5095
As % of all contract IT jobs located in London 21.81% 21.55% 22.18%
Number of daily rates quoted 3375 3200 3471
Median daily rate £425 £400 £400
Median daily rate % change year-on-year
+6.25% -
90% offered a daily rate of more than £213 £200 £190
10% offered a daily rate of more than £575 £573 £550
UK excluding London median daily rate £365 £345 £313
% change year-on-year
+5.79% +10.40%
Number of hourly rates quoted 96 198 240
Median hourly rate £17.50 £18.60 £17.00
Median hourly rate % change year-on-year
-5.91% +9.41%
90% offered a hourly rate of more than £12.50 £13.13 £12.00
10% offered a hourly rate of more than £40.00 £40.00 £27.50
UK excluding London median hourly rate £16.50 £16.16 £15.50
% change year-on-year
+2.10% +4.25%

CentOS
Jobs Demand Trend in London

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

CentOS Jobs Demand Trend in London

CentOS
Daily Rate Trend in London

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

CentOS Daily Rate Trend in London

CentOS
Daily Rate Histogram in London

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

CentOS Daily Rate Histogram in London

CentOS
Hourly Rate Trend in London

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

CentOS Hourly Rate Trend in London

CentOS
Contract Job Locations in London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing CentOS within the London region over the 3 months to 31 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
City of London +40 12 £439 +0.28% 11
Croydon -11 6 £480 +9.71%
Ealing 0 3 - -
Harrow - 3 £500 -
Twickenham - 1 £340 -
Westminster - 1 £425 -
CentOS
England

CentOS
Top 30 Related IT Skills in London

For the 6 months to 31 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 across the London region with a requirement for CentOS.

1 316 (100.00%) Linux
2 209 (66.14%) DevOps
3 159 (50.32%) Puppet
4 156 (49.37%) Red Hat
5 149 (47.15%) Agile Software Development
6 141 (44.62%) Red Hat Enterprise Linux
7 127 (40.19%) Bash Shell
8 124 (39.24%) Jenkins
9 123 (38.92%) Java
10 116 (36.71%) Ubuntu
11 115 (36.39%) Continuous Integration
12 112 (35.44%) Amazon AWS
13 111 (35.13%) Git (software)
14 110 (34.81%) Configuration Management
15 102 (32.28%) Python
16 93 (29.43%) VMware
17 84 (26.58%) Perl
18 80 (25.32%) Windows
19 79 (25.00%) Ruby
20 77 (24.37%) Apache
21 69 (21.84%) VMware Infrastructure
22 68 (21.52%) Ansible
23 64 (20.25%) MySQL
24 63 (19.94%) Maven
25 62 (19.62%) Opscode Chef
26 61 (19.30%) Scrum
27 57 (18.04%) Tomcat
28 53 (16.77%) Unix
29 51 (16.14%) PostgreSQL
29 51 (16.14%) Security Cleared

CentOS
Top Related IT Skills in London 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 77 (24.37%) Apache
2 57 (18.04%) Tomcat
3 47 (14.87%) OpenStack
4 45 (14.24%) Confluence
5 24 (7.59%) nginx
6 22 (6.96%) JBoss
7 14 (4.43%) Elasticsearch
8 12 (3.80%) IIS
9 10 (3.16%) Jetty
10 9 (2.85%) Node.js
11 8 (2.53%) Apache Spark
12 6 (1.90%) Mule ESB
13 3 (0.95%) Alfresco
13 3 (0.95%) Exchange Server 2010
13 3 (0.95%) Gunicorn
13 3 (0.95%) Moodle
13 3 (0.95%) MS Exchange
13 3 (0.95%) uWSGI
13 3 (0.95%) Zimbra
14 2 (0.63%) Drupal
Applications
1 14 (4.43%) HipChat
2 7 (2.22%) MS Office
3 6 (1.90%) MS Excel
4 1 (0.32%) MS PowerPoint
4 1 (0.32%) MS Project
Business Applications
1 5 (1.58%) SAP Oil and Gas
Cloud Services
1 112 (35.44%) Amazon AWS
2 16 (5.06%) Google Cloud Platform
3 15 (4.75%) Amazon EC2
4 13 (4.11%) AWS CloudFormation
4 13 (4.11%) Microsoft Azure
5 10 (3.16%) GitHub
5 10 (3.16%) IaaS
6 9 (2.85%) SaaS
7 6 (1.90%) Amazon S3
7 6 (1.90%) AWS Elastic Beanstalk
8 4 (1.27%) Amazon CloudWatch
8 4 (1.27%) CloudFront
8 4 (1.27%) Route 53
9 3 (0.95%) Google Apps
9 3 (0.95%) Rackspace Cloud
9 3 (0.95%) Virtual Private Cloud
10 2 (0.63%) Amazon ElastiCache
10 2 (0.63%) Amazon EMR
10 2 (0.63%) Amazon SQS
10 2 (0.63%) AWS CloudTrail
Communications & Networking
1 42 (13.29%) DNS
2 40 (12.66%) TCP/IP
3 28 (8.86%) Firewall
4 15 (4.75%) SAN
4 15 (4.75%) VPN
5 14 (4.43%) LDAP
6 12 (3.80%) FTP
6 12 (3.80%) SNMP
7 11 (3.48%) Internet
7 11 (3.48%) SMTP
8 10 (3.16%) Fibre Channel
8 10 (3.16%) LAN
9 8 (2.53%) Cisco ASA
9 8 (2.53%) DMZ
9 8 (2.53%) HTTP
9 8 (2.53%) SSH
10 7 (2.22%) WAN
11 6 (1.90%) IMAP
11 6 (1.90%) SSL
11 6 (1.90%) Wi-Fi
Database & Business Intelligence
1 64 (20.25%) MySQL
2 51 (16.14%) PostgreSQL
3 41 (12.97%) MongoDB
4 35 (11.08%) NoSQL
5 23 (7.28%) Hadoop
6 22 (6.96%) Relational Database
7 16 (5.06%) Apache Cassandra
8 13 (4.11%) Redis
8 13 (4.11%) SQL Server
9 12 (3.80%) HBase
10 10 (3.16%) Big Data
11 7 (2.22%) Apache Hive
11 7 (2.22%) Couchbase
11 7 (2.22%) MariaDB
12 6 (1.90%) Amazon RDS
13 4 (1.27%) Amazon DynamoDB
14 3 (0.95%) DB2
14 3 (0.95%) Oracle Database
15 2 (0.63%) Amazon Redshift
15 2 (0.63%) RDBMS
Development Applications
1 124 (39.24%) Jenkins
2 111 (35.13%) Git (software)
3 63 (19.94%) Maven
4 45 (14.24%) JIRA
5 20 (6.33%) Gradle
5 20 (6.33%) Subversion
6 19 (6.01%) Atlassian Bamboo
7 17 (5.38%) Sonatype Nexus
8 16 (5.06%) Ant
9 14 (4.43%) Cucumber
9 14 (4.43%) Vagrant
10 13 (4.11%) Hudson
11 12 (3.80%) TeamCity
12 11 (3.48%) IntelliJ
13 10 (3.16%) Artifactory
13 10 (3.16%) Geb
13 10 (3.16%) Spock
14 9 (2.85%) Mercurial
15 8 (2.53%) Gerrit
15 8 (2.53%) SonarQube
General
1 32 (10.13%) Finance
2 18 (5.70%) Games
3 14 (4.43%) Retail
4 10 (3.16%) Telecoms
5 7 (2.22%) Marketing
6 6 (1.90%) Manufacturing
7 5 (1.58%) Electronics
8 4 (1.27%) Banking
9 3 (0.95%) Publishing
9 3 (0.95%) Spanish Language
10 1 (0.32%) Advertising
10 1 (0.32%) Back Office
10 1 (0.32%) Financial Institution
Job Titles
1 142 (44.94%) DevOps Engineer
2 83 (26.27%) Linux Engineer
3 60 (18.99%) Linux/Unix DevOps
4 49 (15.51%) Linux DevOps Engineer
5 29 (9.18%) Developer
6 25 (7.91%) Administrator
7 21 (6.65%) AWS Engineer
8 19 (6.01%) Linux Administrator
9 18 (5.70%) Senior DevOps Engineer
9 18 (5.70%) Senior Linux Engineer
9 18 (5.70%) Systems Engineer
10 16 (5.06%) Automation Engineer
10 16 (5.06%) Systems Administrator
11 14 (4.43%) Linux Systems Engineer
12 13 (4.11%) Cloud Engineer
12 13 (4.11%) Operations Engineer
13 12 (3.80%) Consultant
13 12 (3.80%) Linux Systems Administrator
14 11 (3.48%) Architect
14 11 (3.48%) Java Developer
Libraries, Frameworks & Software Standards
1 43 (13.61%) Web Services
2 37 (11.71%) LAMP
3 25 (7.91%) MCollective
4 22 (6.96%) RESTful
5 21 (6.65%) ELK Stack
5 21 (6.65%) LAPP Stack
6 13 (4.11%) J2EE
7 12 (3.80%) Apache Camel
7 12 (3.80%) Spring
8 10 (3.16%) Grails
8 10 (3.16%) HTML
8 10 (3.16%) JAX-RS
8 10 (3.16%) LEMP Stack
8 10 (3.16%) Spring Boot
9 9 (2.85%) RabbitMQ
9 9 (2.85%) REST
9 9 (2.85%) XML
10 8 (2.53%) AngularJS
10 8 (2.53%) jQuery
10 8 (2.53%) Twitter Bootstrap
Miscellaneous
1 18 (5.70%) Private Cloud
2 10 (3.16%) Mobile App
2 10 (3.16%) PlayStation
3 9 (2.85%) Management Information System
4 8 (2.53%) Digital Media
5 7 (2.22%) Algorithms
5 7 (2.22%) Data Structures
6 5 (1.58%) Derivative
6 5 (1.58%) Enterprise Software
7 4 (1.27%) Data Centre
8 3 (0.95%) Analytical Skills
8 3 (0.95%) Public Cloud
8 3 (0.95%) User Experience
9 2 (0.63%) e-Learning
9 2 (0.63%) Fintech
9 2 (0.63%) IPTV
9 2 (0.63%) Learning Management System
9 2 (0.63%) Over-the-Top Content
9 2 (0.63%) Replication
9 2 (0.63%) VLE
Operating Systems
1 316 (100.00%) Linux
2 141 (44.62%) Red Hat Enterprise Linux
3 116 (36.71%) Ubuntu
4 80 (25.32%) Windows
5 53 (16.77%) Unix
6 25 (7.91%) Debian
6 25 (7.91%) Fedora
7 23 (7.28%) Windows Server
8 21 (6.65%) Windows Server 2012
9 19 (6.01%) Windows Server 2008
10 14 (4.43%) Solaris
11 13 (4.11%) Mac OS X
11 13 (4.11%) Windows Server 2003
12 12 (3.80%) SUSE
13 6 (1.90%) Windows 7
14 5 (1.58%) AIX
14 5 (1.58%) Windows Mobile
15 4 (1.27%) Mac OS X Server
16 3 (0.95%) Android
16 3 (0.95%) Mac OS
Processes & Methodologies
1 209 (66.14%) DevOps
2 149 (47.15%) Agile Software Development
3 115 (36.39%) Continuous Integration
4 110 (34.81%) Configuration Management
5 61 (19.30%) Scrum
6 47 (14.87%) Continuous Delivery
7 45 (14.24%) Open Source
8 27 (8.54%) Build Automation
9 24 (7.59%) E-Commerce
10 22 (6.96%) TDD
11 18 (5.70%) Service Delivery
12 17 (5.38%) Migration
12 17 (5.38%) Release Management
13 16 (5.06%) Load Balancing
13 16 (5.06%) SOA
14 15 (4.75%) Kanban
15 13 (4.11%) ITIL
15 13 (4.11%) Software Delivery
16 12 (3.80%) High Availability
17 11 (3.48%) Microservices
Programming Languages
1 127 (40.19%) Bash Shell
2 123 (38.92%) Java
3 102 (32.28%) Python
4 84 (26.58%) Perl
5 79 (25.00%) Ruby
6 45 (14.24%) PHP
7 23 (7.28%) SQL
8 19 (6.01%) PowerShell
9 18 (5.70%) Shell Script
10 17 (5.38%) JavaScript
11 11 (3.48%) Groovy
12 7 (2.22%) AWK
12 7 (2.22%) Scala
12 7 (2.22%) sed
13 4 (1.27%) C
13 4 (1.27%) Korn
14 3 (0.95%) C#
15 2 (0.63%) C++
15 2 (0.63%) Go
15 2 (0.63%) PL/SQL
Qualifications
1 51 (16.14%) Security Cleared
2 46 (14.56%) SC Cleared
3 8 (2.53%) CCNA
3 8 (2.53%) Cisco Certification
4 5 (1.58%) Degree
5 4 (1.27%) CCNP
5 4 (1.27%) MCSE
5 4 (1.27%) Microsoft Certification
6 3 (0.95%) MCTS
7 2 (0.63%) BC Cleared
7 2 (0.63%) BPSS Clearance
7 2 (0.63%) CCDA
7 2 (0.63%) CCIE
7 2 (0.63%) CCSA
7 2 (0.63%) CCSE
7 2 (0.63%) DV Cleared
7 2 (0.63%) RHCE
8 1 (0.32%) JNCIA
8 1 (0.32%) LPIC
8 1 (0.32%) RHCSA
Quality Assurance & Compliance
1 4 (1.27%) PCI DSS
2 3 (0.95%) SLA
3 2 (0.63%) Disclosure Scotland
4 1 (0.32%) HMG Security Policy Framework
4 1 (0.32%) QA
System Software
1 69 (21.84%) VMware Infrastructure
2 38 (12.03%) Docker
3 33 (10.44%) Active Directory
4 31 (9.81%) KVM
5 21 (6.65%) vCloud
6 19 (6.01%) VMware ESXi
7 10 (3.16%) vSphere
8 9 (2.85%) Hyper-V
8 9 (2.85%) NFS
8 9 (2.85%) Samba
9 7 (2.22%) StorNext
9 7 (2.22%) Xen
10 4 (1.27%) oVirt
10 4 (1.27%) VirtualBox
10 4 (1.27%) XenServer
11 2 (0.63%) GlusterFS
11 2 (0.63%) GPFS
11 2 (0.63%) iptables
11 2 (0.63%) RHEV
11 2 (0.63%) Slurm Workload Manager
Systems Management
1 159 (50.32%) Puppet
2 68 (21.52%) Ansible
3 62 (19.62%) Opscode Chef
4 45 (14.24%) ZABBIX
5 34 (10.76%) Nagios
6 20 (6.33%) HAProxy
7 19 (6.01%) Kibana
7 19 (6.01%) logstash
7 19 (6.01%) Salt
8 12 (3.80%) Packer
9 10 (3.16%) Rundeck
9 10 (3.16%) SCCM
9 10 (3.16%) Xymon
9 10 (3.16%) Zenoss
10 8 (2.53%) Cacti
11 7 (2.22%) Terraform
12 6 (1.90%) yum
13 5 (1.58%) CFEngine
13 5 (1.58%) Kubernetes
14 4 (1.27%) Bacula
Vendors
1 156 (49.37%) Red Hat
2 93 (29.43%) VMware
3 33 (10.44%) Microsoft
4 24 (7.59%) Atlassian
4 24 (7.59%) Cisco
5 21 (6.65%) NetApp
6 19 (6.01%) Google
7 18 (5.70%) Oracle
8 14 (4.43%) Dell
8 14 (4.43%) EMC
9 11 (3.48%) HP
10 9 (2.85%) Apple
11 8 (2.53%) Citrix
11 8 (2.53%) New Relic
11 8 (2.53%) Sonatype
11 8 (2.53%) Splunk
12 7 (2.22%) Black Duck
12 7 (2.22%) ServiceNow
12 7 (2.22%) Veracode
13 6 (1.90%) Cloudera
London
Salt
Rate: £275 - £315 per day
Posted: 17 hours ago
City, London
Capita Resourcing - IT Resourcing
Rate: Market Rates
Posted: 8 hours ago
London
Vivid Resourcing
Rate: £500 - £550 per day
Posted: 4 days ago
Central London / West End
Digitech Resourcing Ltd
Rate: Up to £550 per day
Posted: 5 days ago
East London
DCV Technologies
Rate: From £350 to £375 per day
Posted: 5 days ago
Holborn, London
Reed Business Information
Posted: 13 days ago
South East London
People Source Consulting
Rate: £500 - £600 per day
Posted: 13 days ago