The first table below looks at the demand for CentOS skills in IT jobs advertised for the London region. Included is a guide to the average salaries offered in IT jobs that have cited CentOS over the 3 months to 23 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 London region.

Location
3 months to
23 Jul 2014
Same period 2013 Same period 2012
CentOS Linux
Rank 329 322 320
Rank change year-on-year
-7 -2
Permanent jobs citing CentOS 374 348 378
As % of all permanent IT jobs located in London 0.78% 0.79% 0.73%
As % of the Operating Systems category 2.83% 2.85% 2.69%
Number of salaries quoted 326 324 311
Average salary £50,000 £50,000 £42,500
Average salary % change year-on-year
- +17.64%
90% offered a salary of more than £37,750 £37,500 £32,500
10% offered a salary of more than £65,000 £62,500 £60,000
UK excluding London average salary £40,000 £37,500 £35,000
% change year-on-year
+6.66% +7.14%
Operating Systems Category
London
Permanent IT job ads with a match in the
Operating Systems category
13200 12227 14057
As % of all permanent IT jobs located in London 27.50% 27.61% 27.19%
Number of salaries quoted 11366 10408 12330
Average salary £48,000 £50,000 £45,000
Average salary % change year-on-year
-4.00% +11.11%
90% offered a salary of more than £27,500 £30,000 £28,500
10% offered a salary of more than £72,500 £70,000 £70,000
UK excluding London average salary £36,500 £37,500 £37,500
% change year-on-year
-2.66% -
CentOS
England

CentOS
Jobs Demand Trend in London

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

CentOS Jobs Demand Trend in London

CentOS
Salary Trend in London

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

CentOS Salary Trend in London

CentOS
Salary Histogram in London

This chart provides a salary histogram for IT jobs citing CentOS across the London region over the 3 months to 23 July 2014.

CentOS Salary Histogram in London

CentOS
Job Locations in London

The table below looks at the demand and provides a guide to the average salaries quoted in IT jobs citing CentOS within the London region over the 3 months to 23 July 2014. 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
(Use links below to see detailed
statistics and historical trends)
Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Average Salary
Last 3 Months
Average Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London -4 57 £45,000 -10.00% 12
Isleworth - 5 £65,250 - 1
Hammersmith -5 1 - -
Kingston Upon Thames - 1 £55,000 - 1
Bromley - 1 £45,000 -
CentOS
England

CentOS
Top 30 Related IT Skills in London

For the 6 months to 23 July 2014, IT jobs across the 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.

1 654 (94.37%) Linux
2 426 (61.47%) Red Hat
3 394 (56.85%) Puppet
4 310 (44.73%) Apache
5 300 (43.29%) MySQL
6 299 (43.15%) Python
7 295 (42.57%) Perl
8 277 (39.97%) Opscode Chef
9 265 (38.24%) DevOps
10 261 (37.66%) Red Hat Enterprise Linux
11 258 (37.23%) Bash Shell
12 231 (33.33%) Ubuntu
13 218 (31.46%) VMware
14 214 (30.88%) PHP
15 202 (29.15%) Nagios
16 201 (29.00%) Ruby
17 185 (26.70%) Java
18 172 (24.82%) Git (software)
19 170 (24.53%) Windows
20 156 (22.51%) Tomcat
21 145 (20.92%) SQL
22 141 (20.35%) DNS
22 141 (20.35%) VMware Infrastructure
23 140 (20.20%) Debian
23 140 (20.20%) Jenkins
24 134 (19.34%) TCP/IP
25 126 (18.18%) Amazon AWS
26 122 (17.60%) nginx
27 119 (17.17%) Load Balancing
28 113 (16.31%) UNIX

CentOS
Top Related IT Skills in London by Category

For the 6 months to 23 July 2014, IT jobs across the 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
1 310 (44.73%) Apache
2 156 (22.51%) Tomcat
3 122 (17.60%) nginx
4 54 (7.79%) Elasticsearch
5 43 (6.20%) OpenStack
6 39 (5.63%) Drupal
7 38 (5.48%) IIS
8 24 (3.46%) WordPress
9 22 (3.17%) WebLogic
10 17 (2.45%) MS Exchange
11 16 (2.31%) Moodle
12 12 (1.73%) Confluence
12 12 (1.73%) Node.js
12 12 (1.73%) GlassFish
13 10 (1.44%) Apache Solr
14 9 (1.30%) Exchange Server 2010
14 9 (1.30%) Jetty
14 9 (1.30%) CMS
15 8 (1.15%) Sitecore CMS
16 7 (1.01%) Exchange Server 2007
Applications
1 31 (4.47%) MS Excel
2 3 (0.43%) MS Visio
3 1 (0.14%) Doxygen
Business Applications
1 3 (0.43%) Summit
1 3 (0.43%) Magento
2 2 (0.29%) Oracle CRM
2 2 (0.29%) RMDS
2 2 (0.29%) Dynamics AX
2 2 (0.29%) Google Analytics
3 1 (0.14%) SAP Oil and Gas
Cloud Services
1 126 (18.18%) Amazon AWS
2 28 (4.04%) Amazon EC2
3 27 (3.90%) SaaS
4 26 (3.75%) Amazon S3
5 13 (1.88%) Amazon ELB
6 9 (1.30%) Cloud Computing
7 8 (1.15%) GitHub
8 7 (1.01%) Rackspace Cloud
9 4 (0.58%) Microsoft Azure
9 4 (0.58%) Amazon SQS
9 4 (0.58%) CloudFront
9 4 (0.58%) Heroku
10 2 (0.29%) Engine Yard
10 2 (0.29%) Office 365
11 1 (0.14%) Route 53
11 1 (0.14%) Google Apps
11 1 (0.14%) IaaS
11 1 (0.14%) Amazon EMR
Communications & Networking
1 141 (20.35%) DNS
2 134 (19.34%) TCP/IP
3 92 (13.28%) Firewall
4 85 (12.27%) HTTP
5 76 (10.97%) SAN
6 68 (9.81%) SSH
7 65 (9.38%) VPN
8 60 (8.66%) Internet
9 55 (7.94%) LDAP
10 52 (7.50%) SSL
11 48 (6.93%) SMTP
11 48 (6.93%) Ethernet
12 44 (6.35%) DHCP
13 40 (5.77%) SNMP
14 39 (5.63%) NAS
15 37 (5.34%) LAN
16 24 (3.46%) F5 BIG-IP LTM
17 23 (3.32%) NetScaler
17 23 (3.32%) BIG-IP
17 23 (3.32%) Kerberos
Database & Business Intelligence
1 300 (43.29%) MySQL
2 101 (14.57%) MongoDB
3 96 (13.85%) NoSQL
4 86 (12.41%) PostgreSQL
5 73 (10.53%) Redis
6 62 (8.95%) Hadoop
7 53 (7.65%) Big Data
8 51 (7.36%) SQL Server
9 50 (7.22%) Apache Cassandra
10 28 (4.04%) Amazon DynamoDB
11 23 (3.32%) DB2
12 21 (3.03%) Relational Database
13 20 (2.89%) MariaDB
14 16 (2.31%) HBase
14 16 (2.31%) CouchDB
15 13 (1.88%) Riak
15 13 (1.88%) Amazon RDS
16 11 (1.59%) SQL Server 2008
17 7 (1.01%) Pentaho
17 7 (1.01%) Apache Hive
Development Applications
1 172 (24.82%) Git (software)
2 140 (20.20%) Jenkins
3 74 (10.68%) Subversion
4 31 (4.47%) Maven
5 27 (3.90%) Hudson
6 24 (3.46%) JIRA
7 12 (1.73%) Juju
8 11 (1.59%) Atlassian Bamboo
9 10 (1.44%) Ant
9 10 (1.44%) Mercurial
10 7 (1.01%) Selenium
11 4 (0.58%) Gerrit
11 4 (0.58%) FishEye
12 3 (0.43%) PHPUnit
13 2 (0.29%) Cucumber
13 2 (0.29%) Artifactory
13 2 (0.29%) Dreamweaver
13 2 (0.29%) Trac
13 2 (0.29%) Grunt
13 2 (0.29%) Karma Test Runner
General
1 84 (12.12%) Finance
2 83 (11.98%) Games
3 35 (5.05%) Telecoms
4 22 (3.17%) Banking
4 22 (3.17%) Online Betting
5 18 (2.60%) Retail
6 15 (2.16%) Marketing
7 12 (1.73%) Advertising
7 12 (1.73%) Publishing
8 6 (0.87%) Back Office
9 2 (0.29%) Electronics
9 2 (0.29%) Pharmaceutical
9 2 (0.29%) Front Office
9 2 (0.29%) Law
9 2 (0.29%) Legal
9 2 (0.29%) Investment Banking
10 1 (0.14%) Manufacturing
Job Titles
1 278 (40.12%) Administrator
2 251 (36.22%) Systems Administrator
3 229 (33.04%) Linux Administrator
4 187 (26.98%) Linux Systems Administrator
5 132 (19.05%) Linux Engineer
6 115 (16.59%) DevOps Engineer
7 85 (12.27%) Senior Systems Administrator
8 67 (9.67%) Senior Linux Administrator
9 66 (9.52%) Senior Linux Systems Administrator
10 62 (8.95%) Developer
11 47 (6.78%) Systems Engineer
12 44 (6.35%) Senior Linux Engineer
13 41 (5.92%) Senior DevOps Engineer
14 32 (4.62%) Support Engineer
15 22 (3.17%) Analyst
15 22 (3.17%) Web Engineer
16 19 (2.74%) Operations Engineer
16 19 (2.74%) Senior Developer
17 18 (2.60%) Consultant
18 17 (2.45%) PHP Developer
Libraries, Frameworks & Software Standards
1 97 (14.00%) Web Services
2 96 (13.85%) LAMP
3 48 (6.93%) HTML
4 46 (6.64%) CSS
5 41 (5.92%) XML
6 28 (4.04%) RabbitMQ
7 27 (3.90%) jQuery
8 23 (3.32%) HTML5
9 22 (3.17%) RESTful
10 21 (3.03%) .NET
11 20 (2.89%) J2EE
11 20 (2.89%) Django
12 15 (2.16%) JSON
12 15 (2.16%) Middleware
12 15 (2.16%) Memcached
13 13 (1.88%) MSMQ
14 12 (1.73%) Sphinx
14 12 (1.73%) MapReduce
15 11 (1.59%) Regular Expression
15 11 (1.59%) ActiveMQ
Miscellaneous
1 99 (14.29%) Open Source
2 69 (9.96%) Clustering
3 48 (6.93%) Replication
4 37 (5.34%) Social Media
5 35 (5.05%) Computer Science
6 27 (3.90%) Online Games
7 15 (2.16%) E-Learning
8 10 (1.44%) Mobile App
9 9 (1.30%) VLE
10 8 (1.15%) Learning Management System
11 7 (1.01%) Foreign Exchange (FX)
11 7 (1.01%) Enterprise Software
11 7 (1.01%) Digital Media
12 6 (0.87%) Mobile Games
13 5 (0.72%) Artificial Intelligence
13 5 (0.72%) PKI
13 5 (0.72%) Hedge funds
14 4 (0.58%) Field-Programmable Gate Array
14 4 (0.58%) Client/Server
14 4 (0.58%) Data Extraction
Operating Systems
1 654 (94.37%) Linux
2 261 (37.66%) Red Hat Enterprise Linux
3 231 (33.33%) Ubuntu
4 170 (24.53%) Windows
5 140 (20.20%) Debian
6 113 (16.31%) UNIX
7 59 (8.51%) Fedora
7 59 (8.51%) Windows Server 2008
8 40 (5.77%) Apple iOS
9 38 (5.48%) Android
10 29 (4.18%) Windows Server 2012
11 25 (3.61%) Mac OS X
12 20 (2.89%) Windows Server 2003
13 19 (2.74%) SUSE
14 16 (2.31%) Windows 7
15 5 (0.72%) Solaris
15 5 (0.72%) SELinux
16 4 (0.58%) FreeBSD
17 3 (0.43%) VMS
18 2 (0.29%) Scientific Linux
Processes & Methodologies
1 265 (38.24%) DevOps
2 119 (17.17%) Load Balancing
3 100 (14.43%) E-Commerce
4 93 (13.42%) Agile Software Development
5 78 (11.26%) Configuration Management
6 74 (10.68%) Continuous Integration
7 65 (9.38%) ITIL
8 61 (8.80%) Scrum
9 38 (5.48%) Web Development
10 33 (4.76%) Kanban
11 32 (4.62%) Service Delivery
12 27 (3.90%) Analytics
13 24 (3.46%) Project Management
14 23 (3.32%) TDD
15 22 (3.17%) Release Management
15 22 (3.17%) Build Automation
16 21 (3.03%) Statistical Analysis
17 19 (2.74%) Performance Tuning
18 17 (2.45%) Root Cause Analysis
19 15 (2.16%) OOP
Programming Languages
1 299 (43.15%) Python
2 295 (42.57%) Perl
3 258 (37.23%) Bash Shell
4 214 (30.88%) PHP
5 201 (29.00%) Ruby
6 185 (26.70%) Java
7 145 (20.92%) SQL
8 60 (8.66%) Shell Script
9 44 (6.35%) JavaScript
10 43 (6.20%) AWK
11 38 (5.48%) sed
12 29 (4.18%) Scala
13 20 (2.89%) PowerShell
14 17 (2.45%) C
15 16 (2.31%) PHP5
16 12 (1.73%) Korn
17 10 (1.44%) C++
17 10 (1.44%) Bourne shell
18 6 (0.87%) C#
19 3 (0.43%) VBScript
Qualifications
1 58 (8.37%) Degree
2 15 (2.16%) Cisco Certification
3 13 (1.88%) Microsoft Certification
3 13 (1.88%) Security Cleared
4 10 (1.44%) MCSE
5 9 (1.30%) CCNA
6 7 (1.01%) CCNP
7 6 (0.87%) SC Cleared
8 5 (0.72%) OSCP
8 5 (0.72%) OSCE
8 5 (0.72%) MCP
8 5 (0.72%) Postgraduate
8 5 (0.72%) CEH
8 5 (0.72%) VMware Certified Professional (VCP)
9 4 (0.58%) RHCE
10 3 (0.43%) Citrix Certification
11 2 (0.29%) CCEA
11 2 (0.29%) MCSA
11 2 (0.29%) A+ Certification
11 2 (0.29%) ITIL Certification
Quality Assurance & Compliance
1 28 (4.04%) QA
2 23 (3.32%) SLA
3 16 (2.31%) PCI DSS
3 16 (2.31%) ISO/IEC 27001
4 8 (1.15%) ISO 9001
4 8 (1.15%) ISO 14001
5 1 (0.14%) Sarbanes-Oxley
System Software
1 141 (20.35%) VMware Infrastructure
2 80 (11.54%) KVM
3 48 (6.93%) Xen
4 43 (6.20%) Active Directory
5 42 (6.06%) Varnish
6 36 (5.19%) NFS
7 25 (3.61%) Hyper-V
8 23 (3.32%) vSphere
9 20 (2.89%) Postfix
10 17 (2.45%) Samba
11 13 (1.88%) vCloud
12 12 (1.73%) VMware ESX
12 12 (1.73%) Squid
13 11 (1.59%) Sendmail
14 10 (1.44%) VirtualBox
15 8 (1.15%) XenApp
15 8 (1.15%) Shibboleth
15 8 (1.15%) VMware ESXi
16 6 (0.87%) XenServer
17 5 (0.72%) Oracle RAC
Systems Management
1 394 (56.85%) Puppet
2 277 (39.97%) Opscode Chef
3 202 (29.15%) Nagios
4 89 (12.84%) ZABBIX
5 66 (9.52%) Cacti
6 57 (8.23%) Salt
7 48 (6.93%) Ansible
8 45 (6.49%) CFEngine
9 34 (4.91%) Vagrant
10 29 (4.18%) SCOM
11 27 (3.90%) logstash
12 25 (3.61%) YUM
13 24 (3.46%) Opsview
14 23 (3.32%) Zenoss
15 19 (2.74%) Red Hat Spacewalk
16 17 (2.45%) Cobbler
16 17 (2.45%) HAProxy
17 14 (2.02%) Ganglia
18 13 (1.88%) Munin
19 8 (1.15%) Capistrano
Vendors
1 426 (61.47%) Red Hat
2 218 (31.46%) VMware
3 69 (9.96%) Oracle
4 67 (9.67%) Cisco
5 61 (8.80%) JBoss
6 52 (7.50%) HP
7 51 (7.36%) Rackspace
8 42 (6.06%) Citrix
9 39 (5.63%) Microsoft
9 39 (5.63%) F5
10 27 (3.90%) Splunk
11 23 (3.32%) NetApp
12 21 (3.03%) Perforce
13 20 (2.89%) Juniper
13 20 (2.89%) SaltStack
14 18 (2.60%) Percona
15 15 (2.16%) Vertica
16 13 (1.88%) New Relic
17 12 (1.73%) Cloudera
17 12 (1.73%) Google
City, London
Xist4 IT Recruitment
Salary: £45-65,000 + Bens
Posted: 14 hours ago
City, London
FIRST POINT IT RESOURCING
Salary: £45000 - £55000 per annum
Posted: 14 hours ago
Central London / West End
Reed Business Information Ltd
Salary: From £55,000 to £64,000 per annum + 29 days + Share Ops + Pension + mo
Posted: 20 hours ago
London
Eaglecliff
Salary: From £50,000 to £60,000 per annum + Benefits
Posted: 20 hours ago
London
ISL
Salary: £45000 - £55000 per annum
Posted: 23 hours ago
East London
Acceler-IT
Salary: From £40,000 to £55,000 per annum +great bens and opportunity
Posted: 23 hours ago
West London
Blue Glue
Salary: From £50,000 to £60,000 per annum
Posted: Yesterday
City, London
Oscar Associates (UK) Ltd
Salary: £35000 - £40000 per annum + Benefits
Posted: Yesterday
Kingston Upon Thames, Surrey
Austin Fraser
Salary: £35000.00 - £40000.00 per annum + Bens
Posted: Yesterday
City, London
Quant Capital
Salary: Up to £40,000 per annum + bonus benefits
Posted: Yesterday
City, London
E-synergy Solutions
Salary: £40000 - £45000 per annum
Posted: 2 days ago
West London
ARC IT Recruitment Ltd
Salary: £60000 Per Annum
Posted: 2 days ago
London
Harvey Nash plc
Salary: £50000 - £55000 per annum
Posted: 4 days ago
North West London
Opus Recruitment Solutions Ltd
Salary: £35000 to £45000 per annum
Posted: 4 days ago
South West London
Oscar Associates (UK) Ltd
Salary: £45000 - £65000 per annum + Benefits
Posted: 4 days ago
London
RBW Consulting
Salary: From £40,000 to £50,000 per annum
Posted: 5 days ago
London
Austin Fraser
Salary: £30000.00 - £35000.00 per annum + Bens
Posted: 5 days ago
London
Computer People
Salary: £35000 - £45000 per annum + pension, 25 days, training
Posted: 5 days ago
Hayes, Middlesex
Rackspace
Salary: Competitive
Posted: 5 days ago