The first table below looks at the demand for CentOS skills in IT jobs advertised across the UK. Included is a guide to the average salaries offered in IT jobs that have cited CentOS over the 3 months to 24 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.

Location
3 months to
24 Jul 2014
Same period 2013 Same period 2012
CentOS Linux
Rank 395 401 420
Rank change year-on-year
+6 +19
Permanent jobs citing CentOS 729 612 630
As % of all permanent IT jobs located in the UK 0.62% 0.56% 0.53%
As % of the Operating Systems category 2.32% 2.06% 1.95%
Number of salaries quoted 639 553 527
Average salary £45,000 £45,000 £40,000
Average salary % change year-on-year
- +12.50%
90% offered a salary of more than £29,900 £30,000 £30,000
10% offered a salary of more than £60,000 £62,500 £55,000
UK excluding London average salary £40,000 £38,500 £35,000
% change year-on-year
+3.89% +10.00%
Operating Systems Category
UK
Permanent IT job ads with a match in the
Operating Systems category
31457 29771 32333
As % of all permanent IT jobs located in the UK 26.73% 27.34% 27.42%
Number of salaries quoted 26318 25227 27708
Average salary £40,000 £40,000 £40,000
90% offered a salary of more than £25,000 £25,000 £25,000
10% offered a salary of more than £65,000 £62,500 £62,500
UK excluding London average salary £36,500 £37,500 £37,500
% change year-on-year
-2.66% -

CentOS
Jobs Demand Trend

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

CentOS Jobs Demand Trend in the UK

CentOS
Salary Trend

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing CentOS within the UK.

CentOS Salary Trend in the UK

CentOS
Salary Histogram

This chart provides a salary histogram for IT jobs citing CentOS over the 3 months to 24 July 2014 within the UK.

CentOS Salary Histogram in the UK

CentOS
Top 30 Job Locations

The table below looks at the demand and provides a guide to the average salaries quoted in IT jobs citing CentOS within the UK over the 3 months to 24 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
England +2 693 £45,000 - 91
London -8 380 £50,000 - 45
South East -5 126 £42,500 -2.29% 19
City of London +3 60 £45,000 -10.00% 12
East of England 0 51 £45,000 +12.50% 4
Hampshire +7 44 £40,000 +14.28% 8
South West +1 42 £37,500 +26.94% 6
Berkshire +26 38 £42,750 +50.00% 4
Yorkshire -39 35 £29,000 -17.14% 7
North West +16 28 £40,000 +14.28% 10
Bristol +16 28 £37,500 +7.14% 3
Cambridgeshire +10 26 £42,500 -15.00% 1
Cambridge -1 24 £42,500 -15.00% 1
Manchester +25 21 £40,000 +3.22% 3
Surrey -17 20 £50,000 +11.11% 4
Basingstoke +11 19 £40,000 -15.78% 4
Hertfordshire -5 19 £53,000 +32.50% 3
Wales +10 18 £35,000 +7.69% 3
South Wales +8 18 £35,000 +7.69% 3
Cardiff - 17 £35,000 - 3
Reading -3 16 £42,625 +85.32% 2
East Midlands -7 16 £29,000 -24.67% 1
West Midlands +17 13 £32,500 -2.25% 1
Scotland -13 12 £30,000 -26.81% 6
Leeds -51 11 £24,690 -41.90% 5
West Yorkshire -64 11 £24,690 -41.90% 5
East Yorkshire - 11 £32,000 -
Goole - 11 £32,000 -
Edinburgh - 9 £30,000 - 4
Guildford +2 8 £42,500 -10.52%

CentOS
Top 30 Related IT Skills

For the 6 months to 24 July 2014, IT jobs within the UK 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 1270 (93.11%) Linux
2 881 (64.59%) Red Hat
3 604 (44.28%) MySQL
4 527 (38.64%) Apache
5 508 (37.24%) Puppet
6 501 (36.73%) Red Hat Enterprise Linux
7 487 (35.70%) Perl
8 451 (33.06%) Python
9 432 (31.67%) Windows
10 422 (30.94%) VMware
11 420 (30.79%) Bash Shell
12 408 (29.91%) Ubuntu
13 388 (28.45%) PHP
14 337 (24.71%) DevOps
15 326 (23.90%) Opscode Chef
16 310 (22.73%) Java
17 277 (20.31%) VMware Infrastructure
18 276 (20.23%) DNS
19 273 (20.01%) Nagios
20 268 (19.65%) TCP/IP
20 268 (19.65%) Ruby
21 259 (18.99%) SQL
22 252 (18.48%) Tomcat
23 246 (18.04%) UNIX
24 236 (17.30%) Git (software)
25 234 (17.16%) Debian
26 197 (14.44%) Web Services
27 196 (14.37%) Firewall
28 195 (14.30%) Amazon AWS
29 167 (12.24%) Windows Server 2008

CentOS
Top Related IT Skills by Category

For the 6 months to 24 July 2014, IT jobs within the UK 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
1 527 (38.64%) Apache
2 252 (18.48%) Tomcat
3 158 (11.58%) nginx
4 105 (7.70%) IIS
5 63 (4.62%) Drupal
6 55 (4.03%) Elasticsearch
7 53 (3.89%) OpenStack
8 49 (3.59%) CMS
9 48 (3.52%) WordPress
10 46 (3.37%) MS Exchange
11 35 (2.57%) WebLogic
12 26 (1.91%) Exchange Server 2010
13 22 (1.61%) Confluence
14 21 (1.54%) Alfresco
15 19 (1.39%) Apache Solr
15 19 (1.39%) Node.js
16 18 (1.32%) Oracle HTTP Server
16 18 (1.32%) GlassFish
17 17 (1.25%) Exchange Server 2013
18 15 (1.10%) Moodle
Applications
1 72 (5.28%) MS Excel
2 10 (0.73%) Photoshop
3 9 (0.66%) Adobe Illustrator
4 5 (0.37%) Mingle
5 3 (0.22%) MS Visio
6 1 (0.073%) Fireworks
6 1 (0.073%) Doxygen
Business Applications
1 19 (1.39%) Magento
2 15 (1.10%) Shopify
3 9 (0.66%) SAP Oil and Gas
4 8 (0.59%) Oracle EBS
5 6 (0.44%) Dynamics CRM
6 3 (0.22%) Google Analytics
6 3 (0.22%) Summit
7 2 (0.15%) Oracle CRM
7 2 (0.15%) Dynamics AX
7 2 (0.15%) RMDS
Cloud Services
1 195 (14.30%) Amazon AWS
2 89 (6.52%) SaaS
3 59 (4.33%) Amazon EC2
4 34 (2.49%) Amazon S3
5 31 (2.27%) Amazon ELB
6 20 (1.47%) Route 53
7 19 (1.39%) Cloud Computing
8 14 (1.03%) Microsoft Azure
9 8 (0.59%) GitHub
10 7 (0.51%) Rackspace Cloud
10 7 (0.51%) Office 365
11 4 (0.29%) CloudFront
11 4 (0.29%) Amazon SQS
11 4 (0.29%) Heroku
12 3 (0.22%) IaaS
13 2 (0.15%) PaaS
14 1 (0.073%) Engine Yard
14 1 (0.073%) ElastiCache
14 1 (0.073%) Amazon EMR
14 1 (0.073%) Google Apps
Communications & Networking
1 276 (20.23%) DNS
2 268 (19.65%) TCP/IP
3 196 (14.37%) Firewall
4 163 (11.95%) HTTP
5 161 (11.80%) SAN
6 129 (9.46%) VPN
7 115 (8.43%) SSL
8 100 (7.33%) Internet
9 99 (7.26%) DHCP
10 87 (6.38%) LDAP
11 84 (6.16%) SSH
12 71 (5.21%) NAS
13 68 (4.99%) LAN
14 67 (4.91%) SMTP
15 57 (4.18%) IPsec
16 55 (4.03%) Ethernet
17 53 (3.89%) WAN
18 49 (3.59%) SNMP
19 42 (3.08%) BGP
19 42 (3.08%) Cisco ASA
Database & Business Intelligence
1 604 (44.28%) MySQL
2 141 (10.34%) SQL Server
3 134 (9.82%) PostgreSQL
4 131 (9.60%) MongoDB
5 108 (7.92%) NoSQL
6 80 (5.87%) Redis
7 66 (4.84%) Hadoop
8 61 (4.47%) Relational Database
9 60 (4.40%) Big Data
10 53 (3.89%) Apache Cassandra
11 41 (3.01%) SQL Server 2008
12 30 (2.20%) Amazon RDS
13 28 (2.05%) Amazon DynamoDB
14 27 (1.98%) RDBMS
14 27 (1.98%) DB2
15 26 (1.91%) SQL Server 2005
16 24 (1.76%) Oracle Database
17 21 (1.54%) MariaDB
18 20 (1.47%) SQL Server Integration Services
19 19 (1.39%) Hazelcast
Development Applications
1 236 (17.30%) Git (software)
2 152 (11.14%) Jenkins
3 127 (9.31%) Subversion
4 51 (3.74%) Maven
5 34 (2.49%) JIRA
6 33 (2.42%) Hudson
7 17 (1.25%) Eclipse
7 17 (1.25%) JUnit
8 14 (1.03%) Metasploit
8 14 (1.03%) Atlassian Bamboo
9 12 (0.88%) Ant
9 12 (0.88%) Juju
10 10 (0.73%) Octopus Deploy
10 10 (0.73%) Mercurial
11 9 (0.66%) Selenium
11 9 (0.66%) Dreamweaver
12 5 (0.37%) TeamCity
12 5 (0.37%) MSTest
12 5 (0.37%) PHPUnit
12 5 (0.37%) Visual Studio
General
1 159 (11.66%) Finance
2 106 (7.77%) Games
3 100 (7.33%) Telecoms
4 48 (3.52%) Marketing
5 39 (2.86%) Online Betting
6 26 (1.91%) Retail
7 24 (1.76%) Back Office
8 23 (1.69%) Banking
9 18 (1.32%) Manufacturing
10 14 (1.03%) Advertising
11 13 (0.95%) Publishing
12 12 (0.88%) Welsh Language
13 10 (0.73%) Electronics
13 10 (0.73%) Pharmaceutical
14 3 (0.22%) Automotive
15 2 (0.15%) Front Office
15 2 (0.15%) Law
15 2 (0.15%) Legal
15 2 (0.15%) Multimedia
15 2 (0.15%) Investment Banking
Job Titles
1 469 (34.38%) Administrator
2 411 (30.13%) Systems Administrator
3 392 (28.74%) Linux Administrator
4 306 (22.43%) Linux Systems Administrator
5 213 (15.62%) Linux Engineer
6 177 (12.98%) Developer
7 135 (9.90%) DevOps Engineer
8 111 (8.14%) Support Engineer
9 110 (8.06%) Senior Systems Administrator
10 104 (7.62%) Systems Engineer
11 92 (6.74%) Senior Linux Administrator
12 87 (6.38%) Senior Linux Systems Administrator
13 71 (5.21%) Infrastructure Engineer
14 63 (4.62%) PHP Developer
15 46 (3.37%) Senior Linux Engineer
16 41 (3.01%) Senior DevOps Engineer
17 40 (2.93%) Consultant
18 39 (2.86%) Analyst
19 35 (2.57%) UNIX Administrator
20 34 (2.49%) Junior
Libraries, Frameworks & Software Standards
1 197 (14.44%) Web Services
2 158 (11.58%) LAMP
3 121 (8.87%) CSS
3 121 (8.87%) HTML
4 104 (7.62%) jQuery
5 60 (4.40%) RESTful
6 59 (4.33%) XML
7 43 (3.15%) .NET
8 39 (2.86%) RabbitMQ
9 38 (2.79%) SOAP
10 36 (2.64%) HTML5
11 31 (2.27%) ActiveMQ
12 28 (2.05%) Spring
13 27 (1.98%) MSMQ
14 25 (1.83%) J2EE
15 22 (1.61%) ASP.NET
16 21 (1.54%) Memcached
16 21 (1.54%) Middleware
17 20 (1.47%) XHTML
17 20 (1.47%) REST
Miscellaneous
1 138 (10.12%) Open Source
2 91 (6.67%) Clustering
3 66 (4.84%) Replication
4 62 (4.55%) Computer Science
5 44 (3.23%) Online Games
6 36 (2.64%) Social Media
7 16 (1.17%) PKI
8 15 (1.10%) Management Information System
8 15 (1.10%) E-Learning
9 13 (0.95%) EqualLogic
10 12 (0.88%) Mobile App
10 12 (0.88%) Mathematics
11 9 (0.66%) DTV
12 8 (0.59%) VLE
12 8 (0.59%) Foreign Exchange (FX)
12 8 (0.59%) Thin Client
12 8 (0.59%) Enterprise Software
12 8 (0.59%) Learning Management System
12 8 (0.59%) Fat Client
13 7 (0.51%) Digital Media
Operating Systems
1 1270 (93.11%) Linux
2 501 (36.73%) Red Hat Enterprise Linux
3 432 (31.67%) Windows
4 408 (29.91%) Ubuntu
5 246 (18.04%) UNIX
6 234 (17.16%) Debian
7 167 (12.24%) Windows Server 2008
8 113 (8.28%) Fedora
9 92 (6.74%) Windows Server 2012
10 69 (5.06%) Windows Server 2003
11 62 (4.55%) Solaris
12 54 (3.96%) SUSE
13 39 (2.86%) Apple iOS
14 37 (2.71%) Android
15 32 (2.35%) Windows 7
16 30 (2.20%) AIX
17 27 (1.98%) Mac OS X
18 17 (1.25%) Windows 2000 Server
19 13 (0.95%) SELinux
20 12 (0.88%) Windows XP
Processes & Methodologies
1 337 (24.71%) DevOps
2 158 (11.58%) E-Commerce
3 148 (10.85%) Load Balancing
4 147 (10.78%) Agile Software Development
5 133 (9.75%) Configuration Management
6 131 (9.60%) ITIL
7 87 (6.38%) Continuous Integration
8 85 (6.23%) Scrum
9 65 (4.77%) Service Delivery
10 50 (3.67%) MVC
11 46 (3.37%) Performance Tuning
12 45 (3.30%) Web Development
13 40 (2.93%) Software Engineering
14 39 (2.86%) TDD
14 39 (2.86%) OOP
15 38 (2.79%) Disaster Recovery
16 37 (2.71%) Migration
17 36 (2.64%) SOA
18 35 (2.57%) Kanban
19 33 (2.42%) Analytics
Programming Languages
1 487 (35.70%) Perl
2 451 (33.06%) Python
3 420 (30.79%) Bash Shell
4 388 (28.45%) PHP
5 310 (22.73%) Java
6 268 (19.65%) Ruby
7 259 (18.99%) SQL
8 102 (7.48%) JavaScript
9 92 (6.74%) Shell Script
10 68 (4.99%) PHP5
11 45 (3.30%) AWK
12 43 (3.15%) PowerShell
13 41 (3.01%) C
14 40 (2.93%) sed
15 30 (2.20%) Scala
16 28 (2.05%) C#
17 24 (1.76%) T-SQL
18 20 (1.47%) C++
19 19 (1.39%) Groovy
19 19 (1.39%) Bourne shell
Qualifications
1 119 (8.72%) Degree
2 61 (4.47%) Cisco Certification
3 40 (2.93%) Microsoft Certification
4 35 (2.57%) CCNA
5 34 (2.49%) MCSE
5 34 (2.49%) RHCE
6 28 (2.05%) VMware Certified Professional (VCP)
7 26 (1.91%) CCNP
7 26 (1.91%) Security Cleared
8 16 (1.17%) CEH
8 16 (1.17%) OSCP
8 16 (1.17%) OSCE
9 15 (1.10%) SC Cleared
9 15 (1.10%) MCITP
10 12 (0.88%) CISSP
11 10 (0.73%) ITIL Certification
12 8 (0.59%) MCTS
12 8 (0.59%) MCP
12 8 (0.59%) MCSA
12 8 (0.59%) OCP
Quality Assurance & Compliance
1 66 (4.84%) SLA
2 38 (2.79%) PCI DSS
3 33 (2.42%) QA
4 25 (1.83%) ISO/IEC 27001
5 14 (1.03%) HIPAA
6 13 (0.95%) ISO 9001
7 9 (0.66%) ISO 14001
8 3 (0.22%) Sarbanes-Oxley
9 2 (0.15%) GPG13
System Software
1 277 (20.31%) VMware Infrastructure
2 110 (8.06%) KVM
3 102 (7.48%) Active Directory
4 78 (5.72%) vSphere
5 68 (4.99%) NFS
6 60 (4.40%) Xen
7 54 (3.96%) Varnish
8 48 (3.52%) Hyper-V
9 42 (3.08%) VMware ESX
10 36 (2.64%) VMware ESXi
11 33 (2.42%) Samba
12 32 (2.35%) Squid
12 32 (2.35%) vCloud
13 27 (1.98%) Postfix
14 25 (1.83%) Nmap
15 19 (1.39%) Snort
16 17 (1.25%) Sendmail
17 15 (1.10%) XenServer
18 12 (0.88%) XenApp
19 10 (0.73%) Oracle RMAN
Systems Management
1 508 (37.24%) Puppet
2 326 (23.90%) Opscode Chef
3 273 (20.01%) Nagios
4 104 (7.62%) ZABBIX
5 76 (5.57%) Cacti
6 64 (4.69%) Salt
7 56 (4.11%) Ansible
8 49 (3.59%) CFEngine
9 37 (2.71%) Vagrant
9 37 (2.71%) logstash
10 36 (2.64%) SCOM
11 30 (2.20%) YUM
12 29 (2.13%) Munin
13 28 (2.05%) Opsview
14 27 (1.98%) Nessus
15 26 (1.91%) Zenoss
16 24 (1.76%) HAProxy
17 21 (1.54%) Plesk
18 19 (1.39%) Red Hat Spacewalk
19 16 (1.17%) Cobbler
Vendors
1 881 (64.59%) Red Hat
2 422 (30.94%) VMware
3 161 (11.80%) Cisco
4 149 (10.92%) Oracle
5 123 (9.02%) Microsoft
6 100 (7.33%) HP
7 89 (6.52%) JBoss
8 76 (5.57%) Citrix
9 63 (4.62%) Rackspace
10 48 (3.52%) Zend
11 46 (3.37%) Dell
12 45 (3.30%) F5
12 45 (3.30%) NetApp
13 38 (2.79%) Splunk
14 29 (2.13%) Juniper
15 28 (2.05%) SAP
15 28 (2.05%) IBM
16 26 (1.91%) Perforce
17 24 (1.76%) EMC
17 24 (1.76%) SaltStack
Milton Keynes, Buckinghamshire
Circle Recruitment
Salary: £35000 - £45000 per annum + Benefits
Posted: 1 hour ago
West London
Testing Circle Ltd
Salary: From £50,000 to £70,000 per annum
Posted: 2 hours ago
London
Salt
Salary: £50000 - £55000 per annum + Bonus & Package
Posted: 2 hours ago
City, London
LA International
Salary: £55000 - £60000 per annum + benefits
Posted: 3 hours ago
City, London
Arrows Group
Salary: £45000.00 - £55000.00 per annum
Posted: 4 hours ago
Surrey
Austin Fraser
Salary: £40000.00 - £45000.00 per annum + Excellent Benefits
Posted: 4 hours ago
Isleworth, Middlesex
Opus Resourcing Ltd
Salary: £50000 - £65000 per annum + Generous Bens + Bonus
Posted: 10 hours ago
London
Oho Group Ltd.
Salary: £30000 to £100000 per annum
Posted: 23 hours ago
London
Salt
Salary: £50000 - £55000 per annum + + Package & Bonus
Posted: Yesterday
Central London / West End
Energon Global
Salary: From £55,000 to £64,000 per annum
Posted: Yesterday
London
Salt
Salary: £42000 - £46000 per annum + + Package & Bonus
Posted: Yesterday
Hampshire
Roc Search
Salary: £40000 - £45000 per annum
Posted: Yesterday
Wiltshire
Roc Search
Salary: £4500 - £40000 per annum
Posted: Yesterday
London
ComputAppoint
Salary: £45000 - £50000 per annum + benefits
Posted: Yesterday
London
ComputAppoint
Salary: £45000 - £50000 per annum + benefits
Posted: Yesterday
Leeds, West Yorkshire
Circle Recruitment
Salary: £18000 - £20000 per annum
Posted: Yesterday
Cardiff, South Glamorgan
Intapeople
Salary: £20000 to £35000 per annum
Posted: Yesterday
Edinburgh, Midlothian
Dell (UK)
Salary: Competitive
Posted: Yesterday
Edinburgh, Midlothian
Dell (UK)
Salary: Competitive
Posted: Yesterday
Central London / West End
Client Server
Salary: £50k to £70k + bonus + benefits
Posted: Yesterday