The first table below looks at the demand 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 25 July 2014 with a comparison to the same period in the previous 2 years. The second table is for comparison and provides aggregates for all of the Operating Systems category for the City of London region.

Location
3 months to
25 Jul 2014
Same period 2013 Same period 2012
CentOS Linux
Rank 268 262 280
Rank change year-on-year
-6 +18
Permanent jobs citing CentOS 61 56 49
As % of all permanent IT jobs located in the City of London 0.49% 0.47% 0.38%
As % of the Operating Systems category 1.84% 1.70% 1.46%
Number of salaries quoted 60 49 46
Average salary £45,000 £50,000 £42,500
Average salary % change year-on-year
-10.00% +17.64%
90% offered a salary of more than £37,225 £39,500 £35,000
10% offered a salary of more than £60,250 £65,000 £65,000
UK excluding London average salary £40,000 £38,500 £35,000
% change year-on-year
+3.89% +10.00%
Operating Systems Category
City of London
Permanent IT job ads with a match in the
Operating Systems category
3318 3300 3363
As % of all permanent IT jobs located in the City of London 26.76% 27.57% 25.82%
Number of salaries quoted 2903 2953 3111
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 £32,500 £29,000
10% offered a salary of more than £75,000 £70,000 £72,500
UK excluding London average salary £36,500 £37,500 £37,500
% change year-on-year
-2.66% -
CentOS
London

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 25 July 2014.

CentOS Salary Histogram in the City of London

CentOS
Top 30 Related IT Skills in the City of London

For the 6 months to 25 July 2014, 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.

1 105 (92.92%) Linux
2 86 (76.11%) Red Hat
3 69 (61.06%) Apache
4 64 (56.64%) Python
5 58 (51.33%) Perl
6 57 (50.44%) Bash Shell
7 56 (49.56%) MySQL
8 53 (46.90%) Puppet
9 50 (44.25%) VMware
10 49 (43.36%) Tomcat
11 48 (42.48%) Nagios
11 48 (42.48%) Ubuntu
12 45 (39.82%) Red Hat Enterprise Linux
13 43 (38.05%) Windows
14 41 (36.28%) Ruby
15 38 (33.63%) VMware Infrastructure
16 35 (30.97%) TCP/IP
16 35 (30.97%) Load Balancing
16 35 (30.97%) nginx
17 34 (30.09%) Cacti
18 33 (29.20%) ZABBIX
19 32 (28.32%) Agile Software Development
19 32 (28.32%) Citrix
20 30 (26.55%) Oracle
20 30 (26.55%) KVM
21 28 (24.78%) ITIL
22 27 (23.89%) JBoss
22 27 (23.89%) DNS
22 27 (23.89%) F5
22 27 (23.89%) Salt

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

For the 6 months to 25 July 2014, 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 69 (61.06%) Apache
2 49 (43.36%) Tomcat
3 35 (30.97%) nginx
4 24 (21.24%) WebLogic
5 7 (6.19%) IIS
6 6 (5.31%) MS Exchange
7 5 (4.42%) Drupal
7 5 (4.42%) Jetty
8 4 (3.54%) Apache Solr
8 4 (3.54%) GlassFish
8 4 (3.54%) Exchange Server 2010
8 4 (3.54%) OpenStack
8 4 (3.54%) Exchange Server 2007
9 3 (2.65%) Exchange Server 2013
9 3 (2.65%) Confluence
10 2 (1.77%) Node.js
11 1 (0.88%) Adobe CQ
11 1 (0.88%) Elasticsearch
11 1 (0.88%) Lync
11 1 (0.88%) Umbraco
Applications
1 6 (5.31%) MS Excel
2 1 (0.88%) MS Visio
2 1 (0.88%) Doxygen
Business Applications
1 2 (1.77%) Oracle CRM
1 2 (1.77%) Magento
2 1 (0.88%) SAP Oil and Gas
Cloud Services
1 3 (2.65%) Amazon AWS
2 2 (1.77%) SaaS
3 1 (0.88%) Office 365
3 1 (0.88%) Route 53
3 1 (0.88%) Amazon EC2
3 1 (0.88%) Amazon S3
Communications & Networking
1 35 (30.97%) TCP/IP
2 27 (23.89%) DNS
3 25 (22.12%) BIG-IP
3 25 (22.12%) NetScaler
4 24 (21.24%) F5 BIG-IP LTM
5 18 (15.93%) Firewall
6 17 (15.04%) SAN
6 17 (15.04%) VPN
7 16 (14.16%) DHCP
8 14 (12.39%) LAN
9 13 (11.50%) SMTP
10 10 (8.85%) Ethernet
10 10 (8.85%) LDAP
10 10 (8.85%) HTTP
11 9 (7.96%) SSL
11 9 (7.96%) OpenVPN
12 8 (7.08%) NAS
12 8 (7.08%) IPsec
12 8 (7.08%) SNMP
13 7 (6.19%) Kerberos
Database & Business Intelligence
1 56 (49.56%) MySQL
2 23 (20.35%) DB2
3 9 (7.96%) PostgreSQL
4 8 (7.08%) Redis
5 7 (6.19%) MongoDB
5 7 (6.19%) NoSQL
6 6 (5.31%) SQL Server
7 4 (3.54%) MariaDB
8 3 (2.65%) Hadoop
9 2 (1.77%) Data Warehouse
9 2 (1.77%) Relational Database
9 2 (1.77%) Apache Cassandra
10 1 (0.88%) Couchbase
10 1 (0.88%) Amazon DynamoDB
10 1 (0.88%) CouchDB
10 1 (0.88%) SQL Server 2005
10 1 (0.88%) SQL Server 2008
Development Applications
1 21 (18.58%) Git (software)
2 15 (13.27%) Subversion
3 11 (9.73%) Jenkins
4 9 (7.96%) JIRA
5 8 (7.08%) Mercurial
6 4 (3.54%) Hudson
7 2 (1.77%) Gerrit
7 2 (1.77%) Trac
7 2 (1.77%) PHPUnit
7 2 (1.77%) Maven
8 1 (0.88%) Atlassian Bamboo
8 1 (0.88%) Cucumber
8 1 (0.88%) Karma Test Runner
8 1 (0.88%) Behat
General
1 6 (5.31%) Publishing
1 6 (5.31%) Games
2 5 (4.42%) Finance
2 5 (4.42%) Marketing
3 2 (1.77%) Investment Banking
3 2 (1.77%) Law
3 2 (1.77%) Banking
4 1 (0.88%) Retail
4 1 (0.88%) Manufacturing
4 1 (0.88%) Advertising
4 1 (0.88%) Back Office
4 1 (0.88%) Electronics
4 1 (0.88%) Telecoms
Job Titles
1 59 (52.21%) Administrator
2 46 (40.71%) Linux Administrator
3 36 (31.86%) Systems Administrator
4 28 (24.78%) Linux Engineer
5 21 (18.58%) Linux Systems Administrator
6 12 (10.62%) Senior Linux Engineer
6 12 (10.62%) DevOps Engineer
7 8 (7.08%) Systems Engineer
8 7 (6.19%) Senior DevOps Engineer
9 6 (5.31%) Consultant
9 6 (5.31%) Technical Support
9 6 (5.31%) Senior Systems Administrator
9 6 (5.31%) Technical Consultant
10 5 (4.42%) Senior Systems Engineer
11 4 (3.54%) Network Engineer
11 4 (3.54%) Team Leader
11 4 (3.54%) Lead Systems Engineer
12 3 (2.65%) Lead Software Engineer
12 3 (2.65%) Software Team Leader
12 3 (2.65%) Senior Software Engineer
Libraries, Frameworks & Software Standards
1 12 (10.62%) XML
2 9 (7.96%) .NET
3 6 (5.31%) LAMP
4 4 (3.54%) Java EE
4 4 (3.54%) Web Services
5 2 (1.77%) HTML
5 2 (1.77%) MSMQ
5 2 (1.77%) Symfony
5 2 (1.77%) RabbitMQ
5 2 (1.77%) Yii
5 2 (1.77%) Laravel
5 2 (1.77%) Java SE
6 1 (0.88%) Backbone.js
6 1 (0.88%) SailPoint
6 1 (0.88%) AngularJS
6 1 (0.88%) CSS3
6 1 (0.88%) Sinatra
6 1 (0.88%) Zend Framework
6 1 (0.88%) CodeIgniter
6 1 (0.88%) jQuery
Miscellaneous
1 15 (13.27%) Open Source
2 11 (9.73%) Clustering
3 5 (4.42%) Replication
4 4 (3.54%) Computer Science
4 4 (3.54%) PKI
5 3 (2.65%) Digital Media
6 2 (1.77%) Mathematics
6 2 (1.77%) Physics
6 2 (1.77%) Video Editing
7 1 (0.88%) Data Protection Act
7 1 (0.88%) Animation
7 1 (0.88%) DTV
7 1 (0.88%) Management Information System
7 1 (0.88%) Mobile Games
7 1 (0.88%) Streaming Video
7 1 (0.88%) Wiki
7 1 (0.88%) Online Gambling
7 1 (0.88%) Enterprise Software
Operating Systems
1 105 (92.92%) Linux
2 48 (42.48%) Ubuntu
3 45 (39.82%) Red Hat Enterprise Linux
4 43 (38.05%) Windows
5 24 (21.24%) Debian
6 18 (15.93%) Windows Server 2008
7 16 (14.16%) UNIX
8 12 (10.62%) Windows Server 2012
9 10 (8.85%) Mac OS X
10 7 (6.19%) Windows Server 2003
10 7 (6.19%) Windows 7
11 3 (2.65%) Apple iOS
11 3 (2.65%) Fedora
11 3 (2.65%) Solaris
12 1 (0.88%) SUSE
12 1 (0.88%) Windows 8
12 1 (0.88%) Android
Processes & Methodologies
1 35 (30.97%) Load Balancing
2 32 (28.32%) Agile Software Development
3 28 (24.78%) ITIL
4 24 (21.24%) DevOps
5 23 (20.35%) Statistical Analysis
6 16 (14.16%) Configuration Management
7 11 (9.73%) Continuous Integration
8 8 (7.08%) E-Commerce
8 8 (7.08%) Security Management
9 7 (6.19%) Asset Management
10 4 (3.54%) Software Engineering
10 4 (3.54%) Load Testing
10 4 (3.54%) High Availability
11 3 (2.65%) Change Control
11 3 (2.65%) Software Architecture
11 3 (2.65%) Capacity Planning
11 3 (2.65%) OO
11 3 (2.65%) CRM
12 2 (1.77%) Project Management
12 2 (1.77%) Service Management
Programming Languages
1 64 (56.64%) Python
2 58 (51.33%) Perl
3 57 (50.44%) Bash Shell
4 41 (36.28%) Ruby
5 24 (21.24%) SQL
6 19 (16.81%) Java
7 17 (15.04%) PHP
8 11 (9.73%) Shell Script
9 6 (5.31%) JavaScript
10 5 (4.42%) PowerShell
11 3 (2.65%) VBScript
12 1 (0.88%) VB
12 1 (0.88%) AWK
12 1 (0.88%) Scala
12 1 (0.88%) PHP5
12 1 (0.88%) C
12 1 (0.88%) C++
12 1 (0.88%) T-SQL
12 1 (0.88%) sed
Qualifications
1 14 (12.39%) Degree
2 8 (7.08%) Security Cleared
3 6 (5.31%) SC Cleared
3 6 (5.31%) Microsoft Certification
4 5 (4.42%) Cisco Certification
5 3 (2.65%) CCNA
5 3 (2.65%) MCP
5 3 (2.65%) MCSE
5 3 (2.65%) RHCE
6 2 (1.77%) A+ Certification
6 2 (1.77%) VMware Certified Professional (VCP)
6 2 (1.77%) CCNP
7 1 (0.88%) Citrix Certification
7 1 (0.88%) CCIE
7 1 (0.88%) CCSP
7 1 (0.88%) MCITP
7 1 (0.88%) CCENT
7 1 (0.88%) GNVQ
7 1 (0.88%) CCVP
Quality Assurance & Compliance
1 7 (6.19%) QA
2 6 (5.31%) PCI DSS
3 2 (1.77%) ISO/IEC 27001
4 1 (0.88%) SLA
System Software
1 38 (33.63%) VMware Infrastructure
2 30 (26.55%) KVM
3 24 (21.24%) Xen
4 18 (15.93%) NFS
5 14 (12.39%) Active Directory
5 14 (12.39%) Postfix
6 13 (11.50%) Hyper-V
7 10 (8.85%) Sendmail
8 8 (7.08%) XenApp
8 8 (7.08%) Samba
9 7 (6.19%) Varnish
10 4 (3.54%) VirtualBox
10 4 (3.54%) FreeRADIUS
11 3 (2.65%) vSphere
11 3 (2.65%) Oracle RAC
12 2 (1.77%) Terminal Services
12 2 (1.77%) Squid
12 2 (1.77%) VMware ESXi
12 2 (1.77%) XenDesktop
13 1 (0.88%) Cygwin
Systems Management
1 53 (46.90%) Puppet
2 48 (42.48%) Nagios
3 34 (30.09%) Cacti
4 33 (29.20%) ZABBIX
5 27 (23.89%) Salt
6 25 (22.12%) Ansible
7 24 (21.24%) CFEngine
8 23 (20.35%) Opscode Chef
9 7 (6.19%) SCOM
10 5 (4.42%) Capistrano
10 5 (4.42%) Vagrant
11 3 (2.65%) Red Hat Spacewalk
11 3 (2.65%) HAProxy
11 3 (2.65%) SCCM
12 2 (1.77%) Sysprep
12 2 (1.77%) logstash
13 1 (0.88%) Kibana
13 1 (0.88%) Graylog2
13 1 (0.88%) Munin
13 1 (0.88%) Zenoss
Vendors
1 86 (76.11%) Red Hat
2 50 (44.25%) VMware
3 32 (28.32%) Citrix
4 30 (26.55%) Oracle
5 27 (23.89%) JBoss
5 27 (23.89%) F5
6 15 (13.27%) HP
7 11 (9.73%) Cisco
8 9 (7.96%) Microsoft
9 6 (5.31%) Juniper
10 4 (3.54%) SaltStack
11 3 (2.65%) Percona
11 3 (2.65%) Atlassian
11 3 (2.65%) SAP
11 3 (2.65%) Symantec
12 2 (1.77%) JD Edwards
12 2 (1.77%) Bloomberg
12 2 (1.77%) NetApp
12 2 (1.77%) Dell
12 2 (1.77%) Zend
City of London
Huxley Associates
Salary: competitive
Posted: 8 hours ago
City, London
LA International
Salary: £55000 - £60000 per annum + benefits
Posted: Yesterday
City, London
Arrows Group
Salary: £45000.00 - £55000.00 per annum
Posted: Yesterday
City, London
Xist4 IT Recruitment
Salary: £45-65,000 + Bens
Posted: 2 days ago
City, London
FIRST POINT IT RESOURCING
Salary: £45000 - £55000 per annum
Posted: 2 days ago
City, London
Oscar Associates (UK) Ltd
Salary: £35000 - £40000 per annum + Benefits
Posted: 3 days ago
City, London
Quant Capital
Salary: Up to £40,000 per annum + bonus benefits
Posted: 4 days ago
City, London
E-synergy Solutions
Salary: £40000 - £45000 per annum
Posted: 4 days ago
City of London
Claremont Consulting Limited
Salary: £40000 - £60000 per annum + benefits and bonuses
Posted: 14 days ago
City of London
Huxley Associates
Salary: £35000 - £50000 per annum + benefits + bonus
Posted: 17 days ago
City of London
Huxley Associates
Salary: £40000 - £55000 per annum + competitive benefits + bonus
Posted: 21 days ago
City of London
NFP Group Ltd
Salary: £55000 - £60000 per annum
Posted: 28 days ago