The table below looks at the statistics for CentOS skills in IT contracts advertised for the City of London region. Included is a guide to the contractor rates offered in IT contracts that have cited CentOS over the 3 months to 23 February 2017 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
23 Feb 2017
Same period 2016 Same period 2015
CentOS Linux
London / City of London
Rank 133 136 182
Rank change year-on-year
+3 +46
Contract jobs citing CentOS 20 11 11
As % of all contract IT jobs located in the City of London 0.68% 0.35% 0.21%
As % of the Operating Systems category 3.17% 1.61% 0.94%
Number of daily rates quoted 18 9 8
Median daily rate £416 £456 £438
Median daily rate % change year-on-year
-8.71% +4.22%
90% offered a daily rate of more than £300 £280 £276
10% offered a daily rate of more than £550 £535 £523
UK excluding London median daily rate £450 £450 £363
% change year-on-year
- +24.13%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £16.38 £8.50 £47.50
% change year-on-year
+92.64% -82.10%

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

Operating Systems Category
City of London
Contract IT job ads with a match in the
Operating Systems category
630 685 1176
As % of all contract IT jobs located in the City of London 21.42% 21.52% 22.55%
Number of daily rates quoted 528 509 910
Median daily rate £450 £438 £413
Median daily rate % change year-on-year
+2.85% +6.06%
90% offered a daily rate of more than £250 £225 £188
10% offered a daily rate of more than £600 £575 £575
UK excluding London median daily rate £365 £350 £338
% change year-on-year
+4.28% +3.70%
Number of hourly rates quoted 7 19 37
Median hourly rate £14.00 £20.00 £17.75
Median hourly rate % change year-on-year
-30.00% +12.67%
90% offered a hourly rate of more than £13.15 £13.00 £12.50
10% offered a hourly rate of more than £129.03 £30.00 £105.00
UK excluding London median hourly rate £15.50 £17.00 £16.00
% change year-on-year
-8.82% +6.25%

CentOS
Jobs Demand Trend in the City of London

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

CentOS Jobs Demand Trend in the City of London

CentOS
Daily Rate Trend in the City of London

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

CentOS Daily Rate Trend in the City of London

CentOS
Daily Rate Histogram in the City of London

This chart provides a histogram of daily rates quoted in contract IT jobs citing CentOS across the City of London region over the 3 months to 23 February 2017.

CentOS Daily Rate Histogram in the City of London

CentOS
Top 30 Related IT Skills in the City of London

For the 6 months to 23 February 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 City of London region with a requirement for CentOS.

1 40 (100.00%) Linux
2 24 (60.00%) Python
3 20 (50.00%) Red Hat
4 17 (42.50%) Agile Software Development
4 17 (42.50%) Red Hat Enterprise Linux
4 17 (42.50%) Bash Shell
4 17 (42.50%) DevOps
5 16 (40.00%) Jenkins
5 16 (40.00%) Amazon AWS
6 15 (37.50%) Git (software)
6 15 (37.50%) Ansible
6 15 (37.50%) VMware
7 13 (32.50%) Ruby
7 13 (32.50%) Docker
7 13 (32.50%) Puppet
8 11 (27.50%) Java
8 11 (27.50%) Perl
9 10 (25.00%) MySQL
9 10 (25.00%) Apache
9 10 (25.00%) Continuous Integration
10 9 (22.50%) VMware Infrastructure
11 8 (20.00%) Web Services
11 8 (20.00%) Windows
11 8 (20.00%) Ubuntu
11 8 (20.00%) LAMP
11 8 (20.00%) PostgreSQL
11 8 (20.00%) Finance
11 8 (20.00%) Continuous Delivery
12 7 (17.50%) Terraform
12 7 (17.50%) Load Balancing

CentOS
Top Related IT Skills in the City of 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 10 (25.00%) Apache
2 5 (12.50%) Tomcat
3 4 (10.00%) Elasticsearch
3 4 (10.00%) IIS
4 3 (7.50%) Apache Spark
4 3 (7.50%) CMS
4 3 (7.50%) Mule ESB
4 3 (7.50%) nginx
5 2 (5.00%) Confluence
5 2 (5.00%) JBoss
5 2 (5.00%) OpenStack
6 1 (2.50%) Apache Solr
6 1 (2.50%) Jetty
6 1 (2.50%) WildFly
Applications
1 1 (2.50%) HipChat
Cloud Services
1 16 (40.00%) Amazon AWS
2 2 (5.00%) Amazon EC2
2 2 (5.00%) Cloud Computing
2 2 (5.00%) GitHub
2 2 (5.00%) Google Cloud Platform
2 2 (5.00%) Microsoft Azure
3 1 (2.50%) Amazon S3
3 1 (2.50%) AWS Elastic Beanstalk
3 1 (2.50%) AWS Lambda
3 1 (2.50%) Bluemix
3 1 (2.50%) G Suite
3 1 (2.50%) IBM Cloud
Communications & Networking
1 6 (15.00%) VPN
2 5 (12.50%) Firewall
2 5 (12.50%) TCP/IP
3 3 (7.50%) DNS
3 3 (7.50%) Reverse Proxy
3 3 (7.50%) SAN
4 2 (5.00%) DMZ
4 2 (5.00%) HTTP
4 2 (5.00%) Internet
4 2 (5.00%) LDAP
4 2 (5.00%) OpenVPN
4 2 (5.00%) SSL
4 2 (5.00%) Wi-Fi
5 1 (2.50%) iSCSI
5 1 (2.50%) Kerberos
5 1 (2.50%) LAN
5 1 (2.50%) OpenLDAP
5 1 (2.50%) SSH
5 1 (2.50%) WAN
Database & Business Intelligence
1 10 (25.00%) MySQL
2 8 (20.00%) PostgreSQL
3 7 (17.50%) Hadoop
4 6 (15.00%) MongoDB
4 6 (15.00%) NoSQL
5 5 (12.50%) Apache Hive
5 5 (12.50%) SQL Server
6 4 (10.00%) Big Data
7 2 (5.00%) InterSystems Cache
7 2 (5.00%) MariaDB
7 2 (5.00%) Redis
8 1 (2.50%) Apache Cassandra
8 1 (2.50%) HBase
8 1 (2.50%) Impala
8 1 (2.50%) Ingres
8 1 (2.50%) Relational Database
Development Applications
1 16 (40.00%) Jenkins
2 15 (37.50%) Git (software)
3 4 (10.00%) JIRA
4 3 (7.50%) Atlassian Bamboo
4 3 (7.50%) Gerrit
4 3 (7.50%) Maven
4 3 (7.50%) Mercurial
4 3 (7.50%) SonarQube
4 3 (7.50%) Sonatype Nexus
4 3 (7.50%) Team Foundation Server
4 3 (7.50%) TeamCity
5 2 (5.00%) Artifactory
6 1 (2.50%) Ant
6 1 (2.50%) Bitbucket
6 1 (2.50%) FishEye
6 1 (2.50%) GitLab
6 1 (2.50%) JIRA Agile
6 1 (2.50%) JUnit
6 1 (2.50%) Liquibase
6 1 (2.50%) Talend Open Studio
General
1 8 (20.00%) Finance
2 4 (10.00%) Telecoms
3 1 (2.50%) Banking
3 1 (2.50%) Front Office
3 1 (2.50%) Investment Banking
3 1 (2.50%) Law
Job Titles
1 13 (32.50%) DevOps Engineer
2 8 (20.00%) Developer
3 6 (15.00%) Linux Engineer
4 4 (10.00%) Administrator
4 4 (10.00%) AWS DevOps
4 4 (10.00%) Hadoop Engineer
4 4 (10.00%) Linux DevOps Engineer
4 4 (10.00%) Linux/Unix DevOps
5 3 (7.50%) Consultant
6 2 (5.00%) AWS Consultant
6 2 (5.00%) AWS Engineer
6 2 (5.00%) C# Developer
6 2 (5.00%) C++ Developer
6 2 (5.00%) Data Engineer
6 2 (5.00%) DBA
6 2 (5.00%) Lead DevOps
6 2 (5.00%) Linux Developer
6 2 (5.00%) Linux Systems Engineer
6 2 (5.00%) Systems Administrator
6 2 (5.00%) Systems Engineer
Libraries, Frameworks & Software Standards
1 8 (20.00%) LAMP
1 8 (20.00%) Web Services
2 6 (15.00%) HTML
3 5 (12.50%) JSON
4 4 (10.00%) CSS
4 4 (10.00%) XML
5 3 (7.50%) .NET
5 3 (7.50%) ASP.NET
5 3 (7.50%) ASP.NET MVC
5 3 (7.50%) ASP.NET MVC 4
5 3 (7.50%) jQuery
5 3 (7.50%) Kafka
5 3 (7.50%) LAPP Stack
5 3 (7.50%) LEMP Stack
5 3 (7.50%) RabbitMQ
5 3 (7.50%) RESTful
5 3 (7.50%) RSS
5 3 (7.50%) SignalR
5 3 (7.50%) XSLT
6 2 (5.00%) REST
Miscellaneous
1 5 (12.50%) Analytical Skills
2 3 (7.50%) Computer Science
2 3 (7.50%) Public Cloud
2 3 (7.50%) Web 2.0
3 1 (2.50%) Clustering
3 1 (2.50%) CMDB
3 1 (2.50%) Data Centre
3 1 (2.50%) Fintech
3 1 (2.50%) Hedge funds
3 1 (2.50%) HP StoreVirtual
3 1 (2.50%) Management Information System
3 1 (2.50%) RIA
3 1 (2.50%) User Experience
Operating Systems
1 40 (100.00%) Linux
2 17 (42.50%) Red Hat Enterprise Linux
3 8 (20.00%) Ubuntu
3 8 (20.00%) Windows
4 5 (12.50%) Windows Server
5 1 (2.50%) Android
5 1 (2.50%) Apple iOS
5 1 (2.50%) Debian
5 1 (2.50%) Fedora
5 1 (2.50%) FreeBSD
5 1 (2.50%) Mac OS X
5 1 (2.50%) Mac OS X Server
5 1 (2.50%) Unix
Processes & Methodologies
1 17 (42.50%) Agile Software Development
1 17 (42.50%) DevOps
2 10 (25.00%) Continuous Integration
3 8 (20.00%) Continuous Delivery
4 7 (17.50%) Load Balancing
5 6 (15.00%) Configuration Management
6 5 (12.50%) High Availability
6 5 (12.50%) OOP
6 5 (12.50%) Scrum
7 4 (10.00%) Open Source
7 4 (10.00%) Performance Monitoring
7 4 (10.00%) Performance Tuning
7 4 (10.00%) Project Management
7 4 (10.00%) Server Building
8 3 (7.50%) Data Modelling
8 3 (7.50%) E-Commerce
8 3 (7.50%) OO
8 3 (7.50%) Service Delivery
8 3 (7.50%) Service Management
8 3 (7.50%) Web Design
Programming Languages
1 24 (60.00%) Python
2 17 (42.50%) Bash Shell
3 13 (32.50%) Ruby
4 11 (27.50%) Java
4 11 (27.50%) Perl
5 6 (15.00%) PHP
6 5 (12.50%) C
6 5 (12.50%) JavaScript
7 3 (7.50%) C#
8 2 (5.00%) C++
8 2 (5.00%) PowerShell
8 2 (5.00%) R
8 2 (5.00%) Scala
9 1 (2.50%) Go
9 1 (2.50%) Shell Script
Qualifications
1 4 (10.00%) SC Cleared
1 4 (10.00%) Security Cleared
2 3 (7.50%) Degree
3 2 (5.00%) RHCE
3 2 (5.00%) RHCSA
4 1 (2.50%) CTC Cleared
Quality Assurance & Compliance
1 2 (5.00%) QA
2 1 (2.50%) PCI DSS
System Software
1 13 (32.50%) Docker
2 9 (22.50%) VMware Infrastructure
3 3 (7.50%) Active Directory
3 3 (7.50%) Virtual Machines
4 2 (5.00%) vCloud
5 1 (2.50%) Apache ZooKeeper
5 1 (2.50%) HDFS
5 1 (2.50%) Postfix
5 1 (2.50%) Squid
5 1 (2.50%) VirtualBox
5 1 (2.50%) VMware ESXi
5 1 (2.50%) Xen
5 1 (2.50%) XenServer
Systems Management
1 15 (37.50%) Ansible
2 13 (32.50%) Puppet
3 7 (17.50%) Terraform
4 4 (10.00%) Cobbler
4 4 (10.00%) Kibana
4 4 (10.00%) Kubernetes
4 4 (10.00%) Red Hat Spacewalk
4 4 (10.00%) ZABBIX
5 3 (7.50%) HAProxy
5 3 (7.50%) logstash
5 3 (7.50%) Opscode Chef
6 2 (5.00%) Rundeck
6 2 (5.00%) Salt
7 1 (2.50%) Docker Swarm
7 1 (2.50%) Hadoop YARN
7 1 (2.50%) Jamf Pro
7 1 (2.50%) Mesos
7 1 (2.50%) Oracle ZFS
7 1 (2.50%) Rancher
7 1 (2.50%) Symantec Endpoint Protection
Vendors
1 20 (50.00%) Red Hat
2 15 (37.50%) VMware
3 3 (7.50%) Atlassian
3 3 (7.50%) Cloudera
3 3 (7.50%) Google
3 3 (7.50%) Sonatype
4 2 (5.00%) Black Duck
4 2 (5.00%) Cisco
4 2 (5.00%) Citrix
4 2 (5.00%) EMC
4 2 (5.00%) Microsoft
4 2 (5.00%) OpenText
4 2 (5.00%) Oracle
4 2 (5.00%) RedDot
4 2 (5.00%) Veracode
5 1 (2.50%) Apple
5 1 (2.50%) HP
5 1 (2.50%) Juniper
5 1 (2.50%) Sybase
5 1 (2.50%) Symantec
City, London
Experis Ltd
Rate: £400.00 - £435.00 per day
Posted: 4 hours ago
City, London
E-synergy Solutions
Rate: £450 - £550 per day
Posted: 2 days ago
City, London
Evolution Recruitment Solutions
Posted: 3 days ago
City, London
Parallel Consulting
Posted: 3 days ago
City of London
TDA Group
Rate: £350 - £400 per day
Posted: 7 days ago