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 30 January 2015 with a comparison to the same period in the previous 2 years.

Location
3 months to
30 Jan 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 265 250 249
Rank change year-on-year
-15 -1
Permanent jobs citing CentOS 45 64 65
As % of all permanent IT jobs located in the City of London 0.44% 0.62% 0.60%
As % of the Operating Systems category 1.67% 2.23% 2.10%
Number of salaries quoted 43 62 62
Average salary £55,000 £50,000 £47,500
Average salary % change year-on-year
+10.00% +5.26%
90% offered a salary of more than £36,700 £32,900 £32,500
10% offered a salary of more than £70,000 £61,750 £67,500
UK excluding London average salary £42,000 £44,000 £36,500
% change year-on-year
-4.54% +20.54%
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
2697 2872 3098
As % of all permanent IT jobs located in the City of London 26.20% 27.70% 28.49%
Number of salaries quoted 2387 2472 2790
Average salary £50,000 £50,000 £47,500
Average salary % change year-on-year
- +5.26%
90% offered a salary of more than £27,500 £29,500 £29,250
10% offered a salary of more than £72,500 £67,500 £75,000
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 30 January 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 30 January 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 94 (96.91%) Linux
2 68 (70.10%) Red Hat
3 47 (48.45%) Red Hat Enterprise Linux
4 45 (46.39%) VMware
5 42 (43.30%) MySQL
6 37 (38.14%) Windows
7 36 (37.11%) Bash Shell
8 34 (35.05%) Puppet
9 32 (32.99%) Perl
10 31 (31.96%) VMware Infrastructure
11 30 (30.93%) Python
12 28 (28.87%) Apache
13 27 (27.84%) PHP
13 27 (27.84%) DevOps
14 25 (25.77%) TCP/IP
14 25 (25.77%) Agile Software Development
15 23 (23.71%) Tomcat
15 23 (23.71%) Nagios
16 21 (21.65%) Ubuntu
17 20 (20.62%) Ruby
18 18 (18.56%) Firewall
18 18 (18.56%) ITIL
19 17 (17.53%) vSphere
20 16 (16.49%) Cacti
20 16 (16.49%) DNS
20 16 (16.49%) Opscode Chef
21 14 (14.43%) Ansible
21 14 (14.43%) Cisco
21 14 (14.43%) SQL
21 14 (14.43%) Configuration Management

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

For the 6 months to 30 January 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 28 (28.87%) Apache
2 23 (23.71%) Tomcat
3 14 (14.43%) nginx
4 11 (11.34%) JBoss
4 11 (11.34%) WebLogic
5 6 (6.19%) MS Exchange
5 6 (6.19%) IIS
6 5 (5.15%) WordPress
7 3 (3.09%) CMS
7 3 (3.09%) Node.js
8 1 (1.03%) OpenStack
8 1 (1.03%) Elasticsearch
8 1 (1.03%) Confluence
8 1 (1.03%) MediaWiki
Applications
1 7 (7.22%) MS Excel
2 3 (3.09%) MS Office
3 1 (1.03%) Photoshop
Business Applications
1 1 (1.03%) Magento
Cloud Services
1 13 (13.40%) Amazon AWS
2 3 (3.09%) Microsoft Azure
3 2 (2.06%) Amazon EC2
3 2 (2.06%) Amazon S3
3 2 (2.06%) SaaS
4 1 (1.03%) Amazon SQS
Communications & Networking
1 25 (25.77%) TCP/IP
2 18 (18.56%) Firewall
3 16 (16.49%) DNS
4 13 (13.40%) VPN
4 13 (13.40%) WAN
5 11 (11.34%) HTTP
6 9 (9.28%) F5 BIG-IP LTM
6 9 (9.28%) BGP
6 9 (9.28%) MPLS
6 9 (9.28%) SAN
6 9 (9.28%) LAN
6 9 (9.28%) VLAN
7 8 (8.25%) BIG-IP
7 8 (8.25%) SMTP
7 8 (8.25%) LDAP
8 7 (7.22%) IPsec
8 7 (7.22%) OSPF
8 7 (7.22%) SSL
8 7 (7.22%) Cisco IOS
9 6 (6.19%) EIGRP
Database & Business Intelligence
1 42 (43.30%) MySQL
2 13 (13.40%) Relational Database
3 6 (6.19%) SQL Server
3 6 (6.19%) PostgreSQL
4 5 (5.15%) DB2
5 4 (4.12%) MongoDB
6 3 (3.09%) Data Mining
7 2 (2.06%) SQL Server 2008
8 1 (1.03%) Big Data
8 1 (1.03%) Amazon DynamoDB
8 1 (1.03%) RDBMS
8 1 (1.03%) SQL Server 2005
8 1 (1.03%) NoSQL
8 1 (1.03%) Redis
8 1 (1.03%) Hadoop
Development Applications
1 11 (11.34%) Git (software)
2 7 (7.22%) Jenkins
3 4 (4.12%) Subversion
3 4 (4.12%) JIRA
4 2 (2.06%) Hudson
4 2 (2.06%) Maven
5 1 (1.03%) GitLab
5 1 (1.03%) Trac
5 1 (1.03%) Gradle
5 1 (1.03%) Grunt
5 1 (1.03%) Visual Studio
5 1 (1.03%) Ant
5 1 (1.03%) Atlassian Bamboo
5 1 (1.03%) Mercurial
5 1 (1.03%) TeamCity
General
1 10 (10.31%) Finance
2 8 (8.25%) Banking
2 8 (8.25%) Retail
3 7 (7.22%) Law
4 5 (5.15%) Telecoms
4 5 (5.15%) Back Office
5 3 (3.09%) Advertising
6 2 (2.06%) Games
Job Titles
1 32 (32.99%) Administrator
2 27 (27.84%) Systems Administrator
3 25 (25.77%) Linux Administrator
4 20 (20.62%) Linux Systems Administrator
5 13 (13.40%) Linux Engineer
5 13 (13.40%) DevOps Engineer
6 10 (10.31%) Senior Architect
6 10 (10.31%) Architect
7 8 (8.25%) Network Engineer
7 8 (8.25%) Developer
8 7 (7.22%) Senior DevOps Engineer
9 6 (6.19%) Senior Systems Administrator
9 6 (6.19%) Senior Linux Engineer
10 5 (5.15%) Support Engineer
10 5 (5.15%) PHP Developer
10 5 (5.15%) Senior Network Engineer
10 5 (5.15%) IT Support Engineer
10 5 (5.15%) IT Support
11 4 (4.12%) Infrastructure Engineer
11 4 (4.12%) Senior Linux Systems Administrator
Libraries, Frameworks & Software Standards
1 13 (13.40%) Web Services
2 12 (12.37%) LAMP
3 9 (9.28%) XML
4 6 (6.19%) HTML
5 5 (5.15%) Symfony
6 4 (4.12%) HTML5
6 4 (4.12%) CSS
7 3 (3.09%) AngularJS
7 3 (3.09%) jQuery
8 2 (2.06%) RESTful
8 2 (2.06%) REST
8 2 (2.06%) CSS3
8 2 (2.06%) Spring
8 2 (2.06%) CGI
8 2 (2.06%) ExpressJS
8 2 (2.06%) LESS
9 1 (1.03%) ASP.NET Web API
9 1 (1.03%) Underscore.js
9 1 (1.03%) ASP.NET MVC 4
9 1 (1.03%) Sass
Miscellaneous
1 9 (9.28%) Analytical Skills
1 9 (9.28%) Open Source
2 3 (3.09%) Computer Science
3 2 (2.06%) Enterprise Storage
3 2 (2.06%) Hedge funds
3 2 (2.06%) Clustering
3 2 (2.06%) Mobile App
4 1 (1.03%) User Experience
4 1 (1.03%) Performance Metrics
4 1 (1.03%) Replication
4 1 (1.03%) Streaming Video
4 1 (1.03%) W3C
4 1 (1.03%) Client/Server
4 1 (1.03%) Wiki
4 1 (1.03%) Derivative
4 1 (1.03%) Inversion of Control
4 1 (1.03%) Digital Media
4 1 (1.03%) MHEG
Operating Systems
1 94 (96.91%) Linux
2 47 (48.45%) Red Hat Enterprise Linux
3 37 (38.14%) Windows
4 21 (21.65%) Ubuntu
5 9 (9.28%) Windows Server 2008
6 8 (8.25%) UNIX
6 8 (8.25%) Debian
7 5 (5.15%) Mac OS
8 4 (4.12%) Amazon Linux
9 3 (3.09%) Windows Server 2003
9 3 (3.09%) Apple iOS
10 2 (2.06%) Fedora
10 2 (2.06%) Mac OS X
11 1 (1.03%) Solaris
11 1 (1.03%) Scientific Linux
11 1 (1.03%) Windows 7
Processes & Methodologies
1 27 (27.84%) DevOps
2 25 (25.77%) Agile Software Development
3 18 (18.56%) ITIL
4 14 (14.43%) Configuration Management
4 14 (14.43%) Load Balancing
5 13 (13.40%) OO
6 8 (8.25%) E-Commerce
7 7 (7.22%) Stakeholder Management
7 7 (7.22%) OOD
8 6 (6.19%) Change Control
8 6 (6.19%) Root Cause Analysis
8 6 (6.19%) Continuous Integration
8 6 (6.19%) MVC
8 6 (6.19%) Performance Tuning
9 5 (5.15%) Statistical Analysis
9 5 (5.15%) Use Case
10 4 (4.12%) Waterfall
10 4 (4.12%) Problem Management
10 4 (4.12%) Project Management
10 4 (4.12%) Service Management
Programming Languages
1 36 (37.11%) Bash Shell
2 32 (32.99%) Perl
3 30 (30.93%) Python
4 27 (27.84%) PHP
5 20 (20.62%) Ruby
6 14 (14.43%) SQL
7 10 (10.31%) Java
8 7 (7.22%) PowerShell
9 6 (6.19%) Shell Script
10 5 (5.15%) JavaScript
11 2 (2.06%) PHP5
11 2 (2.06%) TypeScript
12 1 (1.03%) C#
12 1 (1.03%) Scala
Qualifications
1 8 (8.25%) Degree
2 7 (7.22%) CCNP
2 7 (7.22%) Cisco Certification
3 6 (6.19%) VMware Certified Professional (VCP)
4 5 (5.15%) RHCE
4 5 (5.15%) Security Cleared
5 1 (1.03%) CCNA
5 1 (1.03%) CCIE
Quality Assurance & Compliance
1 2 (2.06%) QA
1 2 (2.06%) SLA
System Software
1 31 (31.96%) VMware Infrastructure
2 17 (17.53%) vSphere
3 13 (13.40%) Active Directory
4 9 (9.28%) KVM
5 6 (6.19%) XenServer
5 6 (6.19%) Xen
6 5 (5.15%) Docker
6 5 (5.15%) Samba
6 5 (5.15%) VMware ESXi
7 4 (4.12%) Postfix
7 4 (4.12%) Hyper-V
7 4 (4.12%) LXC
8 3 (3.09%) Terminal Services
8 3 (3.09%) NFS
8 3 (3.09%) Varnish
9 2 (2.06%) Microsoft Virtual Server
9 2 (2.06%) VMware Server
10 1 (1.03%) Ceph
10 1 (1.03%) vCloud
10 1 (1.03%) Firmware
Systems Management
1 34 (35.05%) Puppet
2 23 (23.71%) Nagios
3 16 (16.49%) Cacti
3 16 (16.49%) Opscode Chef
4 14 (14.43%) Ansible
5 10 (10.31%) Salt
6 9 (9.28%) ZABBIX
7 8 (8.25%) CFEngine
8 5 (5.15%) Vagrant
9 3 (3.09%) Graphite
9 3 (3.09%) HAProxy
10 2 (2.06%) ITRS Geneos
11 1 (1.03%) logstash
11 1 (1.03%) Cobbler
Vendors
1 68 (70.10%) Red Hat
2 45 (46.39%) VMware
3 14 (14.43%) Cisco
4 13 (13.40%) F5
5 12 (12.37%) Citrix
6 11 (11.34%) Microsoft
6 11 (11.34%) Oracle
7 6 (6.19%) HP
8 5 (5.15%) Riverbed
9 4 (4.12%) Akamai
9 4 (4.12%) Rackspace
10 3 (3.09%) Percona
11 2 (2.06%) Zend
11 2 (2.06%) Juniper
11 2 (2.06%) Reuters
11 2 (2.06%) Bloomberg
12 1 (1.03%) Scality
12 1 (1.03%) Facebook
12 1 (1.03%) Twitter
12 1 (1.03%) NetApp
City, London
Careerwise UK Limited
Salary: £35000 per annum + benefits
Posted: 14 hours ago
City, London
Harrington Starr
Salary: £50000 - £70000 per annum
Posted: 15 hours ago
City of London
Harrington Starr
Salary: £55000 - £70000 per annum
Posted: 15 hours ago
City, London
Ashdown IT
Salary: £35000 - £50000 per annum + Benefits
Posted: 15 hours ago
City, London
Client Server
Salary: £65k to £75k + benefits
Posted: 22 hours ago
City, London
Careerwise UK Limited
Salary: £55000 per annum + excelllent benefits
Posted: 2 days ago
City, London
Senitor Associates
Salary: £30000 - £50000 per annum + great company
Posted: 2 days ago
City, London
Opus Recruitment Solutions Ltd
Salary: £50000 - £60000 per annum
Posted: 2 days ago
City, London
Digital Pursuit Ltd
Salary: From £40,000 to £50,000 per annum
Posted: 3 days ago
City, London
Miller Maxwell Ltd
Salary: From £55,000 to £80,000 per annum + Benefits + Bonus
Posted: 4 days ago
City, London
Harrington Starr
Posted: 4 days ago
City, London
TRG
Salary: £65000 - £75000 Per Annum Benefits
Posted: 5 days ago
City, London
Harvey Nash plc
Salary: £55000 - £65000 per annum
Posted: 6 days ago
City of London
Hays IT - Uk Posting account
Salary: £65000.00 - £75000.00 per annum + bens
Posted: 9 days ago
City of London
The People Network
Salary: £40000 - £50000 per annum + benefits
Posted: 23 days ago