The table below looks at the statistics 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 27 November 2014 with a comparison to the same period in the previous 2 years.

Location
3 months to
27 Nov 2014
Same period 2013 Same period 2012
CentOS Linux
Rank 315 299 308
Rank change year-on-year
-16 +9
Permanent jobs citing CentOS 378 419 383
As % of all permanent IT jobs located in London 0.84% 0.92% 0.80%
As % of the Operating Systems category 3.01% 3.32% 2.82%
Number of salaries quoted 360 387 369
Average salary £47,500 £47,500 £45,000
Average salary % change year-on-year
- +5.55%
90% offered a salary of more than £36,500 £33,797 £32,500
10% offered a salary of more than £70,000 £60,000 £60,000
UK excluding London average salary £37,500 £40,000 £37,500
% change year-on-year
-6.25% +6.66%
CentOS
England

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

Operating Systems Category
London
Permanent IT job ads with a match in the
Operating Systems category
12555 12625 13560
As % of all permanent IT jobs located in London 27.81% 27.75% 28.28%
Number of salaries quoted 10764 10810 11843
Average salary £47,500 £48,000 £45,500
Average salary % change year-on-year
-1.04% +5.49%
90% offered a salary of more than £27,500 £29,000 £29,000
10% offered a salary of more than £72,500 £67,500 £72,500
UK excluding London average salary £37,500 £37,500 £37,500

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 27 November 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 27 November 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 +16 52 £47,500 +5.55% 16
Hammersmith - 8 £38,750 - 1
Kingston Upon Thames - 6 £37,500 -
Twickenham +11 2 £50,000 -13.04%
Uxbridge 0 2 £22,500 -50.00%
Bromley - 1 £41,500 - 1
CentOS
England

CentOS
Top 30 Related IT Skills in London

For the 6 months to 27 November 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.

1 776 (97.73%) Linux
2 519 (65.37%) Red Hat
3 450 (56.68%) Puppet
4 406 (51.13%) Python
5 337 (42.44%) MySQL
6 331 (41.69%) Bash Shell
7 325 (40.93%) Perl
8 323 (40.68%) Red Hat Enterprise Linux
9 270 (34.01%) PHP
10 267 (33.63%) Opscode Chef
11 257 (32.37%) Apache
12 255 (32.12%) VMware
13 251 (31.61%) DevOps
14 247 (31.11%) Ubuntu
15 230 (28.97%) Ruby
16 221 (27.83%) Nagios
17 213 (26.83%) Windows
18 204 (25.69%) Git (software)
19 197 (24.81%) Java
20 179 (22.54%) SQL
21 176 (22.17%) Agile Software Development
22 172 (21.66%) Tomcat
23 168 (21.16%) Debian
24 166 (20.91%) Jenkins
25 153 (19.27%) VMware Infrastructure
26 149 (18.77%) TCP/IP
27 145 (18.26%) LAMP
28 137 (17.25%) Amazon AWS
29 131 (16.50%) nginx
30 125 (15.74%) DNS

CentOS
Top Related IT Skills in London by Category

For the 6 months to 27 November 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
1 257 (32.37%) Apache
2 172 (21.66%) Tomcat
3 131 (16.50%) nginx
4 59 (7.43%) JBoss
5 46 (5.79%) IIS
6 45 (5.67%) Elasticsearch
7 39 (4.91%) OpenStack
8 34 (4.28%) Drupal
9 30 (3.78%) WordPress
10 29 (3.65%) WebLogic
10 29 (3.65%) MS Exchange
11 22 (2.77%) Moodle
11 22 (2.77%) Confluence
12 20 (2.52%) Node.js
13 17 (2.14%) Apache Solr
14 14 (1.76%) CMS
15 9 (1.13%) Sitecore CMS
15 9 (1.13%) Exchange Server 2010
16 8 (1.01%) Jetty
17 6 (0.76%) Joomla!
Applications
1 36 (4.53%) MS Excel
2 4 (0.50%) MS Office
3 2 (0.25%) MS Visio
4 1 (0.13%) Doxygen
4 1 (0.13%) Photoshop
Business Applications
1 17 (2.14%) Magento
2 2 (0.25%) Oracle BPM
2 2 (0.25%) Oracle General Ledger
Cloud Services
1 137 (17.25%) Amazon AWS
2 32 (4.03%) Amazon EC2
3 29 (3.65%) SaaS
4 26 (3.27%) Rackspace Cloud
5 23 (2.90%) Amazon S3
6 16 (2.02%) GitHub
7 15 (1.89%) Cloud Computing
8 14 (1.76%) Amazon ELB
9 9 (1.13%) Microsoft Azure
10 7 (0.88%) SoftLayer
11 5 (0.63%) IaaS
12 2 (0.25%) Amazon EMR
12 2 (0.25%) Route 53
12 2 (0.25%) PaaS
12 2 (0.25%) Amazon SQS
13 1 (0.13%) CloudFront
13 1 (0.13%) AWS Data Pipeline
Communications & Networking
1 149 (18.77%) TCP/IP
2 125 (15.74%) DNS
3 111 (13.98%) Firewall
4 80 (10.08%) SAN
4 80 (10.08%) LDAP
5 79 (9.95%) SSH
6 77 (9.70%) LAN
7 74 (9.32%) HTTP
8 67 (8.44%) VPN
9 59 (7.43%) WAN
10 50 (6.30%) SSL
11 48 (6.05%) Ethernet
12 47 (5.92%) DHCP
13 40 (5.04%) SMTP
13 40 (5.04%) SNMP
14 34 (4.28%) NAS
15 31 (3.90%) Multicast
16 29 (3.65%) F5 BIG-IP LTM
17 28 (3.53%) BGP
18 27 (3.40%) IPv4
Database & Business Intelligence
1 337 (42.44%) MySQL
2 97 (12.22%) MongoDB
3 92 (11.59%) NoSQL
4 71 (8.94%) PostgreSQL
5 62 (7.81%) Redis
6 57 (7.18%) Big Data
7 45 (5.67%) Apache Cassandra
8 44 (5.54%) Hadoop
9 39 (4.91%) SQL Server
10 25 (3.15%) DB2
10 25 (3.15%) CouchDB
10 25 (3.15%) MariaDB
11 24 (3.02%) Relational Database
12 17 (2.14%) Riak
13 13 (1.64%) Amazon RDS
14 11 (1.39%) Amazon DynamoDB
15 9 (1.13%) RavenDB
16 7 (0.88%) HBase
17 6 (0.76%) SQL Server 2005
18 5 (0.63%) Couchbase
Development Applications
1 204 (25.69%) Git (software)
2 166 (20.91%) Jenkins
3 67 (8.44%) Subversion
4 46 (5.79%) Hudson
5 41 (5.16%) JIRA
6 29 (3.65%) Maven
7 22 (2.77%) Atlassian Bamboo
7 22 (2.77%) Mercurial
8 11 (1.39%) Behat
9 10 (1.26%) Selenium
10 9 (1.13%) Cucumber
10 9 (1.13%) FishEye
11 7 (0.88%) Juju
12 6 (0.76%) Yeoman
13 5 (0.63%) PHPUnit
13 5 (0.63%) Gerrit
14 4 (0.50%) Bazaar
14 4 (0.50%) Artifactory
15 3 (0.38%) VisualVM
16 2 (0.25%) Ant
General
1 113 (14.23%) Finance
2 37 (4.66%) Games
3 33 (4.16%) Retail
4 19 (2.39%) Advertising
5 18 (2.27%) Banking
6 16 (2.02%) Back Office
7 14 (1.76%) Publishing
8 9 (1.13%) Law
9 8 (1.01%) Telecoms
10 7 (0.88%) Marketing
11 6 (0.76%) Financial Institution
12 5 (0.63%) Legal
13 1 (0.13%) Spanish Language
13 1 (0.13%) Investment Banking
Job Titles
1 302 (38.04%) Administrator
2 297 (37.41%) Systems Administrator
3 248 (31.23%) Linux Administrator
4 223 (28.09%) Linux Systems Administrator
5 132 (16.62%) Linux Engineer
6 107 (13.48%) DevOps Engineer
7 69 (8.69%) Linux DevOps Engineer
8 68 (8.56%) Senior Systems Administrator
9 67 (8.44%) Developer
10 49 (6.17%) Senior Linux Administrator
11 48 (6.05%) Senior Linux Systems Administrator
12 44 (5.54%) Analyst
13 37 (4.66%) PHP Developer
14 34 (4.28%) Systems Engineer
15 32 (4.03%) Senior Linux Engineer
16 31 (3.90%) Senior DevOps Engineer
17 24 (3.02%) Web Engineer
18 23 (2.90%) Support Engineer
19 22 (2.77%) Web Developer
19 22 (2.77%) Development Analyst
Libraries, Frameworks & Software Standards
1 145 (18.26%) LAMP
2 112 (14.11%) Web Services
3 87 (10.96%) HTML
4 72 (9.07%) CSS
5 57 (7.18%) XML
6 45 (5.67%) HTML5
7 42 (5.29%) jQuery
8 34 (4.28%) Symfony
9 28 (3.53%) Django
10 25 (3.15%) JSON
11 22 (2.77%) XSLT
11 22 (2.77%) Memcached
12 21 (2.64%) RESTful
13 19 (2.39%) RabbitMQ
14 18 (2.27%) Zend Framework
15 17 (2.14%) .NET
16 16 (2.02%) SOAP
16 16 (2.02%) Regular Expression
17 14 (1.76%) MSMQ
17 14 (1.76%) Ajax
Miscellaneous
1 90 (11.34%) Open Source
2 41 (5.16%) Clustering
3 39 (4.91%) Computer Science
4 37 (4.66%) Replication
5 31 (3.90%) Hedge funds
6 28 (3.53%) Analytical Skills
7 26 (3.27%) E-Learning
8 22 (2.77%) VLE
9 19 (2.39%) Social Media
10 18 (2.27%) Learning Management System
11 16 (2.02%) Digital Media
12 12 (1.51%) Management Information System
13 11 (1.39%) Data Extraction
14 10 (1.26%) Mobile App
15 7 (0.88%) Social Network
15 7 (0.88%) Spread Betting
16 6 (0.76%) IPTV
16 6 (0.76%) Enterprise Software
17 5 (0.63%) Algorithms
17 5 (0.63%) Video Editing
Operating Systems
1 776 (97.73%) Linux
2 323 (40.68%) Red Hat Enterprise Linux
3 247 (31.11%) Ubuntu
4 213 (26.83%) Windows
5 168 (21.16%) Debian
6 117 (14.74%) UNIX
7 57 (7.18%) Fedora
8 46 (5.79%) Windows Server 2008
9 29 (3.65%) Mac OS X
10 25 (3.15%) Windows Server 2003
11 17 (2.14%) SUSE
11 17 (2.14%) Windows Server 2012
12 14 (1.76%) Apple iOS
13 12 (1.51%) Amazon Linux
14 11 (1.39%) Android
15 9 (1.13%) SELinux
16 6 (0.76%) Mac OS
16 6 (0.76%) Windows 7
16 6 (0.76%) Windows 2000
17 4 (0.50%) VMS
Processes & Methodologies
1 251 (31.61%) DevOps
2 176 (22.17%) Agile Software Development
3 109 (13.73%) Load Balancing
4 103 (12.97%) Configuration Management
5 96 (12.09%) ITIL
6 93 (11.71%) E-Commerce
7 85 (10.71%) Continuous Integration
8 48 (6.05%) Scrum
9 45 (5.67%) Performance Tuning
10 40 (5.04%) Mentoring
11 38 (4.79%) OO
12 37 (4.66%) Service Delivery
13 36 (4.53%) Analytics
14 35 (4.41%) Project Management
15 33 (4.16%) Web Development
16 30 (3.78%) Service Management
17 24 (3.02%) OOP
17 24 (3.02%) Data Modelling
17 24 (3.02%) Build Automation
18 23 (2.90%) Kanban
Programming Languages
1 406 (51.13%) Python
2 331 (41.69%) Bash Shell
3 325 (40.93%) Perl
4 270 (34.01%) PHP
5 230 (28.97%) Ruby
6 197 (24.81%) Java
7 179 (22.54%) SQL
8 61 (7.68%) JavaScript
9 56 (7.05%) Shell Script
10 51 (6.42%) PowerShell
11 39 (4.91%) sed
12 31 (3.90%) PHP5
13 28 (3.53%) AWK
14 21 (2.64%) Scala
15 11 (1.39%) C++
16 10 (1.26%) T-SQL
17 8 (1.01%) Korn
18 7 (0.88%) VBScript
19 6 (0.76%) C
19 6 (0.76%) XQuery
Qualifications
1 63 (7.93%) Degree
2 36 (4.53%) Cisco Certification
3 22 (2.77%) RHCE
3 22 (2.77%) Security Cleared
4 21 (2.64%) CCNA
5 17 (2.14%) VMware Certified Professional (VCP)
6 16 (2.02%) CCNP
7 13 (1.64%) Microsoft Certification
8 12 (1.51%) MCSE
9 10 (1.26%) MCP
10 8 (1.01%) OSCP
10 8 (1.01%) OSCE
10 8 (1.01%) CEH
11 7 (0.88%) MCITP
12 6 (0.76%) RHCSA
12 6 (0.76%) MCSA
13 4 (0.50%) SC Cleared
14 3 (0.38%) Postgraduate
15 2 (0.25%) CCIE
15 2 (0.25%) CISSP
Quality Assurance & Compliance
1 30 (3.78%) QA
2 27 (3.40%) ISO/IEC 27001
3 22 (2.77%) SLA
4 15 (1.89%) ISO 9001
4 15 (1.89%) ISO 14001
5 13 (1.64%) PCI DSS
6 1 (0.13%) Sarbanes-Oxley
System Software
1 153 (19.27%) VMware Infrastructure
2 52 (6.55%) KVM
3 51 (6.42%) Xen
4 50 (6.30%) vSphere
5 48 (6.05%) Active Directory
6 45 (5.67%) Varnish
7 38 (4.79%) Samba
8 32 (4.03%) Docker
9 27 (3.40%) NFS
10 25 (3.15%) vCloud
11 23 (2.90%) XenServer
12 22 (2.77%) LXC
13 19 (2.39%) VMware ESXi
14 16 (2.02%) Shibboleth
15 13 (1.64%) Postfix
16 10 (1.26%) Hyper-V
17 8 (1.01%) Ceph
18 4 (0.50%) VirtualBox
18 4 (0.50%) XenApp
19 3 (0.38%) Squid
Systems Management
1 450 (56.68%) Puppet
2 267 (33.63%) Opscode Chef
3 221 (27.83%) Nagios
4 108 (13.60%) ZABBIX
5 77 (9.70%) Cacti
6 75 (9.45%) Salt
7 60 (7.56%) Ansible
8 58 (7.30%) Vagrant
9 40 (5.04%) CFEngine
10 35 (4.41%) ITRS Geneos
11 24 (3.02%) YUM
11 24 (3.02%) Zenoss
12 21 (2.64%) logstash
13 15 (1.89%) SCOM
14 10 (1.26%) Red Hat Spacewalk
15 9 (1.13%) Opsview
15 9 (1.13%) Capistrano
15 9 (1.13%) Ganglia
15 9 (1.13%) WSUS
16 8 (1.01%) HAProxy
Vendors
1 519 (65.37%) Red Hat
2 255 (32.12%) VMware
3 80 (10.08%) Cisco
4 75 (9.45%) Microsoft
5 71 (8.94%) Oracle
6 58 (7.30%) Rackspace
7 54 (6.80%) HP
8 47 (5.92%) Zend
9 46 (5.79%) Citrix
10 41 (5.16%) F5
11 36 (4.53%) Perforce
12 28 (3.53%) Reuters
13 26 (3.27%) Bloomberg
14 22 (2.77%) Juniper
15 19 (2.39%) NetApp
16 17 (2.14%) Riverbed
17 15 (1.89%) Vertica
18 14 (1.76%) Akamai
18 14 (1.76%) EMC
19 13 (1.64%) SaltStack
Bromley, Kent
vipr
Salary: Negotiable
Posted: 2 hours ago
London
Digitech Resourcing Ltd
Salary: From £40,000 to £55,000 per annum + big benefits!
Posted: 7 hours ago
Central London / West End
Verticality Ltd
Salary: £35000 - £38000 per annum
Posted: 9 hours ago
London
Digitech Resourcing Ltd
Salary: From £40,000 to £50,000 per annum
Posted: 10 hours ago
Central London / West End
Mortimer Spinks
Salary: £45000 - £55000 per annum + excellent package & Bonus
Posted: Yesterday
London
ISL
Salary: £45000 - £55000 per annum
Posted: Yesterday
Central London / West End
Energon Global
Salary: Up to £70,000 per annum
Posted: Yesterday
London
Pure IT Associates Ltd
Salary: Benefits
Posted: Yesterday
City, London
Harvey Nash plc
Salary: £35000 - £40000 per annum + Benefits
Posted: 2 days ago
London
Testing Circle Ltd
Salary: From £50,000 to £60,000 per annum
Posted: 2 days ago
London
Testing Circle Ltd
Salary: From £55,000 to £60,000 per annum
Posted: 2 days ago
West London
Opus Resourcing Ltd
Salary: £45000 - £55000 per annum + Bens + Generous Bonus
Posted: 2 days ago
City, London
Profile 29 Limited
Salary: From £40,000 to £55,000 per annum + benefits (see advert)
Posted: 2 days ago
City, London
Greywood Associates Limited
Salary: £40000 - £45000 per annum + bens
Posted: 2 days ago
London
Verticality Ltd
Salary: £36000 to £38000 per annum
Posted: 3 days ago
London
Harvey Nash plc
Salary: £30000 - £34000 per annum
Posted: 3 days ago
Central London / West End
Energon Global
Salary: From £50,000 to £70,000 per annum + Excellent Benefits
Posted: 3 days ago
East London
Informatiq Consulting
Salary: Attractive
Posted: 5 days ago
London
Austin Fraser
Salary: £30000 - £40000 per annum + Bens
Posted: 6 days ago
City, London
Westbourne Partners
Salary: From £50,000 to £70,000 per annum
Posted: 6 days ago