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 27 February 2015 with a comparison to the same period in the previous 2 years.

Location
3 months to
27 Feb 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 268 247 268
Rank change year-on-year
-21 +21
Permanent jobs citing CentOS 43 66 44
As % of all permanent IT jobs located in the City of London 0.41% 0.64% 0.41%
As % of the Operating Systems category 1.56% 2.36% 1.54%
Number of salaries quoted 37 58 41
Average salary £60,000 £50,000 £45,000
Average salary % change year-on-year
+20.00% +11.11%
90% offered a salary of more than £39,600 £33,200 £32,500
10% offered a salary of more than £70,000 £60,500 £67,500
UK excluding London average salary £42,500 £41,500 £35,750
% change year-on-year
+2.40% +16.08%
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
2756 2792 2850
As % of all permanent IT jobs located in the City of London 26.49% 26.88% 26.24%
Number of salaries quoted 2417 2386 2565
Average salary £50,000 £50,000 £47,500
Average salary % change year-on-year
- +5.26%
90% offered a salary of more than £29,000 £29,500 £30,000
10% offered a salary of more than £72,500 £70,000 £72,500
UK excluding London average salary £37,500 £37,500 £37,500

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 27 February 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 27 February 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 88 (95.65%) Linux
2 56 (60.87%) Red Hat
3 49 (53.26%) VMware
4 47 (51.09%) Red Hat Enterprise Linux
5 43 (46.74%) Windows
6 36 (39.13%) MySQL
7 35 (38.04%) VMware Infrastructure
8 29 (31.52%) Apache
9 27 (29.35%) PHP
10 26 (28.26%) DevOps
11 25 (27.17%) Bash Shell
12 24 (26.09%) TCP/IP
13 23 (25.00%) Puppet
14 22 (23.91%) Firewall
15 19 (20.65%) Microsoft
16 18 (19.57%) Agile Software Development
16 18 (19.57%) vSphere
16 18 (19.57%) Cisco
16 18 (19.57%) VPN
16 18 (19.57%) Perl
17 17 (18.48%) OO
17 17 (18.48%) DNS
18 16 (17.39%) ITIL
18 16 (17.39%) Relational Database
19 15 (16.30%) Tomcat
19 15 (16.30%) Python
19 15 (16.30%) SQL Server
19 15 (16.30%) WAN
19 15 (16.30%) Finance
19 15 (16.30%) Nagios

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

For the 6 months to 27 February 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 29 (31.52%) Apache
2 15 (16.30%) Tomcat
3 12 (13.04%) IIS
4 9 (9.78%) nginx
5 6 (6.52%) SharePoint
5 6 (6.52%) MS Exchange
6 5 (5.43%) WordPress
7 3 (3.26%) WebLogic
7 3 (3.26%) JBoss
7 3 (3.26%) CMS
8 2 (2.17%) Node.js
9 1 (1.09%) MediaWiki
9 1 (1.09%) Confluence
Applications
1 7 (7.61%) MS Excel
2 3 (3.26%) MS Office
3 2 (2.17%) Photoshop
Cloud Services
1 12 (13.04%) Amazon AWS
2 3 (3.26%) Microsoft Azure
3 2 (2.17%) Amazon EC2
3 2 (2.17%) Amazon S3
4 1 (1.09%) SaaS
4 1 (1.09%) Amazon SQS
4 1 (1.09%) GitHub
Communications & Networking
1 24 (26.09%) TCP/IP
2 22 (23.91%) Firewall
3 18 (19.57%) VPN
4 17 (18.48%) DNS
5 15 (16.30%) WAN
6 14 (15.22%) SAN
7 12 (13.04%) VLAN
8 11 (11.96%) VoIP
9 10 (10.87%) LDAP
10 8 (8.70%) HTTP
10 8 (8.70%) Fibre Channel
11 7 (7.61%) LAN
11 7 (7.61%) SMTP
11 7 (7.61%) Network Security
11 7 (7.61%) MPLS
11 7 (7.61%) BGP
12 6 (6.52%) iSCSI
13 5 (5.43%) OSPF
13 5 (5.43%) IPsec
13 5 (5.43%) SSL
Database & Business Intelligence
1 36 (39.13%) MySQL
2 16 (17.39%) Relational Database
3 15 (16.30%) SQL Server
4 6 (6.52%) PostgreSQL
5 4 (4.35%) MongoDB
6 3 (3.26%) Data Mining
7 2 (2.17%) SQL Server 2008
7 2 (2.17%) NoSQL
8 1 (1.09%) Big Data
8 1 (1.09%) Amazon DynamoDB
8 1 (1.09%) Hadoop
8 1 (1.09%) SQL Server 2005
8 1 (1.09%) RDBMS
Development Applications
1 11 (11.96%) Git (software)
2 7 (7.61%) Jenkins
3 4 (4.35%) Subversion
3 4 (4.35%) Maven
3 4 (4.35%) JIRA
4 2 (2.17%) Ant
4 2 (2.17%) Hudson
4 2 (2.17%) Gradle
4 2 (2.17%) Grunt
5 1 (1.09%) Bower
5 1 (1.09%) GitLab
5 1 (1.09%) Trac
5 1 (1.09%) Visual Studio
5 1 (1.09%) Team Foundation Server
5 1 (1.09%) Atlassian Bamboo
5 1 (1.09%) TeamCity
General
1 15 (16.30%) Finance
2 13 (14.13%) Banking
3 11 (11.96%) Retail
4 8 (8.70%) Advertising
5 7 (7.61%) Telecoms
6 6 (6.52%) Law
7 4 (4.35%) Back Office
8 2 (2.17%) Games
9 1 (1.09%) Marketing
Job Titles
1 26 (28.26%) Administrator
2 25 (27.17%) Systems Administrator
3 19 (20.65%) Linux Administrator
4 18 (19.57%) Linux Systems Administrator
5 14 (15.22%) DevOps Engineer
6 12 (13.04%) Senior Architect
6 12 (13.04%) Architect
7 8 (8.70%) Developer
7 8 (8.70%) Senior DevOps Engineer
8 6 (6.52%) Linux Engineer
8 6 (6.52%) Network Engineer
8 6 (6.52%) Consultant
8 6 (6.52%) Sales Consultant
8 6 (6.52%) Pre Sales Consultant
9 5 (5.43%) IT Support Engineer
9 5 (5.43%) Support Engineer
9 5 (5.43%) PHP Developer
9 5 (5.43%) Senior Systems Administrator
9 5 (5.43%) IT Support
10 4 (4.35%) Linux DevOps Engineer
Libraries, Frameworks & Software Standards
1 14 (15.22%) Web Services
2 11 (11.96%) LAMP
3 5 (5.43%) HTML
3 5 (5.43%) XML
4 4 (4.35%) Symfony
4 4 (4.35%) Spring
4 4 (4.35%) CSS
5 3 (3.26%) HTML5
5 3 (3.26%) REST
5 3 (3.26%) LESS
5 3 (3.26%) AngularJS
5 3 (3.26%) RESTful
5 3 (3.26%) jQuery
6 2 (2.17%) Ajax
6 2 (2.17%) XHTML
6 2 (2.17%) RSS
6 2 (2.17%) CGI
6 2 (2.17%) .NET
6 2 (2.17%) ASP.NET
6 2 (2.17%) Underscore.js
Miscellaneous
1 8 (8.70%) Open Source
2 7 (7.61%) Analytical Skills
3 6 (6.52%) Replication
4 2 (2.17%) Clustering
4 2 (2.17%) Client/Server
4 2 (2.17%) W3C
4 2 (2.17%) Streaming Video
4 2 (2.17%) Enterprise Storage
4 2 (2.17%) Mobile App
4 2 (2.17%) User Experience
5 1 (1.09%) Digital Media
5 1 (1.09%) Inversion of Control
5 1 (1.09%) Tandem
5 1 (1.09%) Computer Science
5 1 (1.09%) Wiki
5 1 (1.09%) MHEG
Operating Systems
1 88 (95.65%) Linux
2 47 (51.09%) Red Hat Enterprise Linux
3 43 (46.74%) Windows
4 14 (15.22%) Ubuntu
5 13 (14.13%) Debian
6 8 (8.70%) Windows Server 2008
7 7 (7.61%) UNIX
8 5 (5.43%) Mac OS
9 3 (3.26%) Apple iOS
9 3 (3.26%) Fedora
10 2 (2.17%) Mac OS X
10 2 (2.17%) Windows Server 2003
10 2 (2.17%) Amazon Linux
11 1 (1.09%) Scientific Linux
11 1 (1.09%) Windows 7
Processes & Methodologies
1 26 (28.26%) DevOps
2 18 (19.57%) Agile Software Development
3 17 (18.48%) OO
4 16 (17.39%) ITIL
5 13 (14.13%) Configuration Management
5 13 (14.13%) Load Balancing
6 10 (10.87%) Stakeholder Management
6 10 (10.87%) OOD
7 9 (9.78%) E-Commerce
8 8 (8.70%) Disaster Recovery
9 6 (6.52%) MVC
9 6 (6.52%) Business Development
10 5 (5.43%) Software Engineering
10 5 (5.43%) Continuous Integration
11 4 (4.35%) Waterfall
11 4 (4.35%) Change Control
11 4 (4.35%) Root Cause Analysis
11 4 (4.35%) Performance Tuning
11 4 (4.35%) Problem Management
11 4 (4.35%) Project Management
Programming Languages
1 27 (29.35%) PHP
2 25 (27.17%) Bash Shell
3 18 (19.57%) Perl
4 15 (16.30%) Python
5 12 (13.04%) SQL
5 12 (13.04%) Java
6 11 (11.96%) Ruby
7 6 (6.52%) PowerShell
8 5 (5.43%) JavaScript
8 5 (5.43%) Shell Script
9 2 (2.17%) C#
9 2 (2.17%) PHP5
10 1 (1.09%) Scala
10 1 (1.09%) TypeScript
Qualifications
1 9 (9.78%) VMware Certified Professional (VCP)
1 9 (9.78%) Degree
2 5 (5.43%) MCSE
2 5 (5.43%) MCSA
2 5 (5.43%) CCNP
2 5 (5.43%) CCA
2 5 (5.43%) Citrix Certification
2 5 (5.43%) CCEA
2 5 (5.43%) Cisco Certification
2 5 (5.43%) Microsoft Certification
3 4 (4.35%) Security Cleared
4 3 (3.26%) RHCE
5 2 (2.17%) VCP4
6 1 (1.09%) CCNA
6 1 (1.09%) CCIE
Quality Assurance & Compliance
1 7 (7.61%) SLA
2 1 (1.09%) QA
System Software
1 35 (38.04%) VMware Infrastructure
2 18 (19.57%) vSphere
3 13 (14.13%) Active Directory
4 6 (6.52%) XenDesktop
5 5 (5.43%) XenServer
6 4 (4.35%) Hyper-V
6 4 (4.35%) Postfix
6 4 (4.35%) Varnish
6 4 (4.35%) VMware ESXi
6 4 (4.35%) NFS
6 4 (4.35%) Samba
6 4 (4.35%) KVM
6 4 (4.35%) Docker
7 3 (3.26%) Terminal Services
8 2 (2.17%) Microsoft Virtual Server
8 2 (2.17%) VMware Server
8 2 (2.17%) LXC
9 1 (1.09%) Squid
9 1 (1.09%) Firmware
9 1 (1.09%) vCloud
Systems Management
1 23 (25.00%) Puppet
2 15 (16.30%) Nagios
3 11 (11.96%) Opscode Chef
4 8 (8.70%) Ansible
5 6 (6.52%) Cacti
6 3 (3.26%) Vagrant
6 3 (3.26%) HAProxy
6 3 (3.26%) logstash
6 3 (3.26%) Graphite
7 1 (1.09%) Salt
7 1 (1.09%) ZABBIX
7 1 (1.09%) Cobbler
Vendors
1 56 (60.87%) Red Hat
2 49 (53.26%) VMware
3 19 (20.65%) Microsoft
4 18 (19.57%) Cisco
5 13 (14.13%) Citrix
6 12 (13.04%) HP
7 10 (10.87%) Oracle
8 6 (6.52%) F5
9 4 (4.35%) Rackspace
10 3 (3.26%) Percona
10 3 (3.26%) Riverbed
11 2 (2.17%) Akamai
11 2 (2.17%) Zend
11 2 (2.17%) Juniper
11 2 (2.17%) Facebook
11 2 (2.17%) Twitter
12 1 (1.09%) New Relic
12 1 (1.09%) NetApp
12 1 (1.09%) Dell
12 1 (1.09%) EMC
City, London
Harrington Starr
Salary: £55000 - £70000 per annum
Posted: 1 hour ago
City, London
Ashdown IT
Salary: £35000 - £55000 per annum + Benefits
Posted: Yesterday
City, London
Senitor Associates
Salary: £30000 - £50000 per annum + great company
Posted: 2 days ago
City, London
Digital Pursuit Ltd
Salary: From £40,000 to £50,000 per annum
Posted: 3 days ago
City, London
Digitech Resourcing Ltd
Salary: Up to £65,000 per annum + Benefits
Posted: 3 days ago
City of London
The People Network
Salary: £40000 - £50000 per annum + benefits
Posted: 5 days ago
City of London
NFP Group Ltd
Salary: £60000 - £70000 per annum
Posted: 16 days ago
City of London
NFP Group Ltd
Salary: £40000 - £55000 per annum
Posted: 17 days ago
City, London
JM Digital
Posted: 25 days ago