The table below looks at the statistics for CentOS skills in IT jobs advertised for the City of London region. Included is a guide to the average salaries offered in IT jobs that have cited CentOS over the 3 months to 6 May 2015 with a comparison to the same period in the previous 2 years.

Location
3 months to
6 May 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 264 292 273
Rank change year-on-year
+28 -19
Permanent jobs citing CentOS 47 51 42
As % of all permanent IT jobs located in the City of London 0.45% 0.41% 0.36%
As % of the Operating Systems category 1.77% 1.55% 1.42%
Number of salaries quoted 42 37 30
Average salary £45,000 £52,000 £50,000
Average salary % change year-on-year
-13.46% +4.00%
90% offered a salary of more than £32,500 £34,900 £32,250
10% offered a salary of more than £67,250 £58,500 £65,250
UK excluding London average salary £40,000 £37,500 £38,500
% change year-on-year
+6.66% -2.59%
CentOS
London

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

Operating Systems Category
City of London
Permanent IT job ads with a match in the
Operating Systems category
2650 3291 2961
As % of all permanent IT jobs located in the City of London 25.53% 26.27% 25.19%
Number of salaries quoted 2300 2913 2647
Average salary £50,000 £50,000 £50,000
90% offered a salary of more than £30,650 £29,000 £32,500
10% offered a salary of more than £70,000 £72,500 £72,500
UK excluding London average salary £37,500 £36,500 £37,500
% change year-on-year
+2.73% -2.66%

CentOS
Jobs Demand Trend in the City of London

This chart provides a 3-month moving total of permanent IT jobs citing CentOS across the City of London region as a proportion of the total demand within the Operating Systems category.

CentOS Jobs Demand Trend in the City of London

CentOS
Salary Trend in the City of London

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

CentOS Salary Trend in the City of London

CentOS
Salary Histogram in the City of London

This chart provides a salary histogram for IT jobs citing CentOS across the City of London region over the 3 months to 6 May 2015.

CentOS Salary Histogram in the City of London

CentOS
Top 30 Related IT Skills in the City of London

For the 6 months to 6 May 2015, IT jobs across the City of London region citing CentOS also mentioned the following IT skills in order of popularity. The figures indicate the number of jobs and their proportion against the total number of IT job ads sampled that cited CentOS.

1 86 (93.48%) Linux
2 54 (58.70%) Red Hat
3 53 (57.61%) VMware
4 42 (45.65%) VMware Infrastructure
5 41 (44.57%) Red Hat Enterprise Linux
6 39 (42.39%) Windows
7 38 (41.30%) MySQL
8 37 (40.22%) Apache
9 31 (33.70%) Bash Shell
10 28 (30.43%) PHP
10 28 (30.43%) DNS
11 25 (27.17%) Cisco
12 24 (26.09%) Python
13 23 (25.00%) Puppet
13 23 (25.00%) DevOps
14 21 (22.83%) Firewall
14 21 (22.83%) VPN
15 20 (21.74%) Microsoft
15 20 (21.74%) Perl
15 20 (21.74%) Finance
16 19 (20.65%) Java
16 19 (20.65%) SQL Server
16 19 (20.65%) Git (software)
17 18 (19.57%) HP
18 17 (18.48%) OO
18 17 (18.48%) TCP/IP
18 17 (18.48%) Agile Software Development
18 17 (18.48%) Ruby
18 17 (18.48%) Ubuntu
18 17 (18.48%) Opscode Chef

CentOS
Top Related IT Skills in the City of London by Category

For the 6 months to 6 May 2015, IT jobs across the City of London region citing CentOS also mentioned the following IT skills grouped by category. The figures indicate the number of jobs and their proportion against the total number of IT job ads sampled that cited CentOS. Up to 20 skills are shown per category.

Application Platforms
1 37 (40.22%) Apache
2 12 (13.04%) IIS
3 10 (10.87%) nginx
3 10 (10.87%) Tomcat
4 7 (7.61%) SharePoint
5 4 (4.35%) WordPress
6 3 (3.26%) MS Exchange
7 2 (2.17%) CMS
7 2 (2.17%) Drupal
7 2 (2.17%) Node.js
7 2 (2.17%) JBoss
8 1 (1.09%) Confluence
8 1 (1.09%) MediaWiki
8 1 (1.09%) Elasticsearch
8 1 (1.09%) GlassFish
8 1 (1.09%) Jetty
8 1 (1.09%) Mule
Applications
1 5 (5.43%) MS Excel
2 2 (2.17%) Photoshop
Business Applications
1 1 (1.09%) Magento
Cloud Services
1 16 (17.39%) Amazon AWS
2 4 (4.35%) Amazon EC2
3 2 (2.17%) Amazon S3
3 2 (2.17%) Microsoft Azure
3 2 (2.17%) Route 53
4 1 (1.09%) GitHub
4 1 (1.09%) AWS Elastic Beanstalk
4 1 (1.09%) SaaS
4 1 (1.09%) Amazon SQS
Communications & Networking
1 28 (30.43%) DNS
2 21 (22.83%) VPN
2 21 (22.83%) Firewall
3 17 (18.48%) TCP/IP
4 14 (15.22%) SAN
5 12 (13.04%) VoIP
5 12 (13.04%) WAN
6 11 (11.96%) LDAP
6 11 (11.96%) VLAN
7 9 (9.78%) Fibre Channel
7 9 (9.78%) DHCP
8 8 (8.70%) BGP
8 8 (8.70%) Network Security
9 7 (7.61%) iSCSI
10 6 (6.52%) OSPF
10 6 (6.52%) SMTP
11 5 (5.43%) LAN
11 5 (5.43%) Cisco ASA
11 5 (5.43%) IPsec
11 5 (5.43%) Cisco IOS
Database & Business Intelligence
1 38 (41.30%) MySQL
2 19 (20.65%) SQL Server
3 16 (17.39%) Relational Database
4 7 (7.61%) MongoDB
5 5 (5.43%) PostgreSQL
6 2 (2.17%) NoSQL
6 2 (2.17%) MariaDB
7 1 (1.09%) Amazon DynamoDB
7 1 (1.09%) Amazon RDS
7 1 (1.09%) Big Data
7 1 (1.09%) SQL Server 2008
7 1 (1.09%) Hadoop
7 1 (1.09%) Ingres
7 1 (1.09%) RDBMS
Development Applications
1 19 (20.65%) Git (software)
2 10 (10.87%) Jenkins
3 8 (8.70%) Subversion
4 7 (7.61%) Maven
5 3 (3.26%) JIRA
5 3 (3.26%) Hudson
6 2 (2.17%) Gradle
6 2 (2.17%) Grunt
6 2 (2.17%) TeamCity
6 2 (2.17%) Team Foundation Server
6 2 (2.17%) Ant
7 1 (1.09%) Eclipse
7 1 (1.09%) Mercurial
7 1 (1.09%) Atlassian Bamboo
7 1 (1.09%) Bower
7 1 (1.09%) GitLab
7 1 (1.09%) Trac
General
1 20 (21.74%) Finance
2 14 (15.22%) Banking
3 10 (10.87%) Retail
3 10 (10.87%) Telecoms
4 9 (9.78%) Advertising
5 4 (4.35%) Law
6 2 (2.17%) Back Office
6 2 (2.17%) Games
7 1 (1.09%) Marketing
Job Titles
1 25 (27.17%) Administrator
2 23 (25.00%) Systems Administrator
3 14 (15.22%) DevOps Engineer
4 12 (13.04%) Linux Administrator
4 12 (13.04%) Senior Architect
4 12 (13.04%) Architect
5 10 (10.87%) Linux Systems Administrator
6 9 (9.78%) Developer
7 7 (7.61%) Consultant
7 7 (7.61%) Sales Consultant
7 7 (7.61%) Pre Sales Consultant
8 6 (6.52%) Linux Engineer
8 6 (6.52%) Senior DevOps Engineer
9 5 (5.43%) PHP Developer
9 5 (5.43%) Network Engineer
10 4 (4.35%) Junior
10 4 (4.35%) Infrastructure Engineer
10 4 (4.35%) Network Administrator
11 3 (3.26%) Software Engineer
12 2 (2.17%) Analyst
Libraries, Frameworks & Software Standards
1 13 (14.13%) Web Services
2 11 (11.96%) LAMP
3 7 (7.61%) CGI
4 5 (5.43%) HTML
5 4 (4.35%) .NET
5 4 (4.35%) CSS
5 4 (4.35%) Spring
5 4 (4.35%) Symfony
6 3 (3.26%) jQuery
6 3 (3.26%) RESTful
6 3 (3.26%) REST
6 3 (3.26%) LESS
6 3 (3.26%) ASP.NET
6 3 (3.26%) AngularJS
7 2 (2.17%) Twitter Bootstrap
7 2 (2.17%) React
7 2 (2.17%) XML
7 2 (2.17%) XHTML
7 2 (2.17%) RSS
7 2 (2.17%) Ajax
Miscellaneous
1 7 (7.61%) Replication
2 6 (6.52%) Analytical Skills
3 5 (5.43%) Open Source
4 3 (3.26%) Clustering
5 2 (2.17%) Client/Server
5 2 (2.17%) W3C
5 2 (2.17%) Streaming Video
5 2 (2.17%) Enterprise Storage
5 2 (2.17%) Mobile App
5 2 (2.17%) User Experience
6 1 (1.09%) Digital Media
6 1 (1.09%) Private Cloud
6 1 (1.09%) Hybrid Cloud
6 1 (1.09%) Inversion of Control
6 1 (1.09%) Tandem
6 1 (1.09%) Computer Science
6 1 (1.09%) Wiki
6 1 (1.09%) MHEG
Operating Systems
1 86 (93.48%) Linux
2 41 (44.57%) Red Hat Enterprise Linux
3 39 (42.39%) Windows
4 17 (18.48%) Ubuntu
5 15 (16.30%) UNIX
5 15 (16.30%) Debian
6 10 (10.87%) Windows Server 2008
7 8 (8.70%) Fedora
8 3 (3.26%) Mac OS X
8 3 (3.26%) Windows 7
8 3 (3.26%) Windows Server 2012
9 2 (2.17%) Windows Server 2003
10 1 (1.09%) SUSE
10 1 (1.09%) Windows 2000
10 1 (1.09%) Amazon Linux
10 1 (1.09%) Scientific Linux
10 1 (1.09%) Mac OS
Processes & Methodologies
1 23 (25.00%) DevOps
2 17 (18.48%) OO
2 17 (18.48%) Agile Software Development
3 13 (14.13%) Load Balancing
4 12 (13.04%) ITIL
5 10 (10.87%) OOD
5 10 (10.87%) Stakeholder Management
6 9 (9.78%) Business Development
6 9 (9.78%) Disaster Recovery
7 8 (8.70%) Continuous Integration
8 7 (7.61%) Configuration Management
9 6 (6.52%) MVC
9 6 (6.52%) Software Engineering
10 5 (5.43%) Change Management
10 5 (5.43%) E-Commerce
11 4 (4.35%) Migration
11 4 (4.35%) Project Management
11 4 (4.35%) Service Management
11 4 (4.35%) Scrum
11 4 (4.35%) Problem Management
Programming Languages
1 31 (33.70%) Bash Shell
2 28 (30.43%) PHP
3 24 (26.09%) Python
4 20 (21.74%) Perl
5 19 (20.65%) Java
6 17 (18.48%) Ruby
7 14 (15.22%) SQL
8 9 (9.78%) Shell Script
9 6 (6.52%) JavaScript
10 4 (4.35%) PowerShell
11 3 (3.26%) C#
12 2 (2.17%) PHP5
13 1 (1.09%) Scala
13 1 (1.09%) sed
13 1 (1.09%) TypeScript
13 1 (1.09%) AWK
13 1 (1.09%) T-SQL
Qualifications
1 14 (15.22%) Degree
2 8 (8.70%) Microsoft Certification
3 6 (6.52%) VMware Certified Professional (VCP)
3 6 (6.52%) MCSE
3 6 (6.52%) MCSA
3 6 (6.52%) CCA
3 6 (6.52%) Citrix Certification
3 6 (6.52%) CCEA
3 6 (6.52%) Cisco Certification
4 4 (4.35%) CCNP
5 3 (3.26%) CCNA
6 2 (2.17%) LPIC
6 2 (2.17%) MCITP
6 2 (2.17%) Linux+ Certification
7 1 (1.09%) Security Cleared
7 1 (1.09%) CCIE
Quality Assurance & Compliance
1 8 (8.70%) SLA
2 4 (4.35%) QA
3 1 (1.09%) PCI DSS
System Software
1 42 (45.65%) VMware Infrastructure
2 16 (17.39%) Active Directory
3 14 (15.22%) vSphere
4 7 (7.61%) XenDesktop
5 6 (6.52%) Hyper-V
6 5 (5.43%) NFS
6 5 (5.43%) Xen
7 4 (4.35%) Varnish
7 4 (4.35%) VMware ESXi
7 4 (4.35%) Postfix
7 4 (4.35%) KVM
7 4 (4.35%) iptables
8 3 (3.26%) Terminal Services
8 3 (3.26%) Samba
9 2 (2.17%) XenServer
9 2 (2.17%) Microsoft Virtual Server
9 2 (2.17%) VMware Server
9 2 (2.17%) Docker
10 1 (1.09%) FreeRADIUS
10 1 (1.09%) VMware ESX
Systems Management
1 23 (25.00%) Puppet
2 17 (18.48%) Opscode Chef
3 12 (13.04%) Nagios
4 4 (4.35%) Cacti
4 4 (4.35%) Ansible
4 4 (4.35%) logstash
5 3 (3.26%) ZABBIX
6 2 (2.17%) HAProxy
6 2 (2.17%) Pingdom
7 1 (1.09%) Salt
7 1 (1.09%) Kibana
7 1 (1.09%) Cobbler
7 1 (1.09%) Vagrant
7 1 (1.09%) Zenoss
Vendors
1 54 (58.70%) Red Hat
2 53 (57.61%) VMware
3 25 (27.17%) Cisco
4 20 (21.74%) Microsoft
5 18 (19.57%) HP
6 16 (17.39%) Citrix
7 8 (8.70%) Oracle
8 3 (3.26%) Splunk
9 2 (2.17%) Percona
9 2 (2.17%) Facebook
9 2 (2.17%) Twitter
9 2 (2.17%) Zend
9 2 (2.17%) ProCurve
9 2 (2.17%) CheckPoint
9 2 (2.17%) Juniper
9 2 (2.17%) SaltStack
9 2 (2.17%) AppDynamics
10 1 (1.09%) WorldPay
10 1 (1.09%) Sybase
10 1 (1.09%) Dell
City, London
IT Rockstars Recruitment
Salary: Compelling salary + Bonus
Posted: Yesterday
City, London
RICHARD WHEELER ASSOCIATES
Salary: From £40,000 to £50,000 per annum + strong benefits
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RICHARD WHEELER ASSOCIATES
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