The table below looks at the statistics for CentOS skills in IT jobs advertised for the Bristol region. Included is a guide to the average salaries offered in IT jobs that have cited CentOS over the 3 months to 17 April 2015 with a comparison to the same period in the previous 2 years.

Location
3 months to
17 Apr 2015
Same period 2014 Same period 2013
CentOS Linux
Rank 86 113 130
Rank change year-on-year
+27 +17
Permanent jobs citing CentOS 38 16 2
As % of all permanent IT jobs located in Bristol 1.90% 0.80% 0.11%
As % of the Operating Systems category 7.84% 3.30% 0.45%
Number of salaries quoted 36 8 2
Average salary £43,750 £32,000 £28,000
Average salary % change year-on-year
+36.71% +14.28%
90% offered a salary of more than £37,500 £30,000 £23,600
10% offered a salary of more than £75,000 £43,250 £32,400
UK excluding London average salary £40,000 £40,000 £37,500
% change year-on-year
- +6.66%
CentOS
South West

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

Operating Systems Category
Bristol
Permanent IT job ads with a match in the
Operating Systems category
485 485 440
As % of all permanent IT jobs located in Bristol 24.21% 24.18% 23.85%
Number of salaries quoted 414 412 397
Average salary £40,000 £33,500 £37,500
Average salary % change year-on-year
+19.40% -10.66%
90% offered a salary of more than £25,000 £22,000 £24,500
10% offered a salary of more than £70,000 £47,500 £52,500
UK excluding London average salary £37,500 £37,500 £37,500

CentOS
Jobs Demand Trend in Bristol

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

CentOS Jobs Demand Trend in Bristol

CentOS
Salary Trend in Bristol

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

CentOS Salary Trend in Bristol

CentOS
Salary Histogram in Bristol

This chart provides a salary histogram for IT jobs citing CentOS across the Bristol region over the 3 months to 17 April 2015.

CentOS Salary Histogram in Bristol

CentOS
Top 30 Related IT Skills in Bristol

For the 6 months to 17 April 2015, IT jobs across the Bristol 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 56 (100.00%) Linux
2 39 (69.64%) Red Hat
3 34 (60.71%) Ubuntu
4 33 (58.93%) Debian
5 32 (57.14%) Red Hat Enterprise Linux
5 32 (57.14%) Puppet
6 30 (53.57%) Bash Shell
6 30 (53.57%) Apache
7 29 (51.79%) PHP
8 27 (48.21%) Ruby
8 27 (48.21%) DevOps
9 26 (46.43%) Opscode Chef
10 25 (44.64%) MySQL
10 25 (44.64%) Perl
10 25 (44.64%) Python
11 23 (41.07%) Fedora
12 22 (39.29%) nginx
13 21 (37.50%) Windows
14 20 (35.71%) Continuous Integration
15 19 (33.93%) VMware
16 18 (32.14%) Configuration Management
17 17 (30.36%) UNIX
17 17 (30.36%) Jenkins
18 16 (28.57%) Hudson
18 16 (28.57%) Subversion
18 16 (28.57%) VMware Infrastructure
18 16 (28.57%) Git (software)
19 15 (26.79%) Open Source
19 15 (26.79%) Samba
19 15 (26.79%) Java

CentOS
Top Related IT Skills in Bristol by Category

For the 6 months to 17 April 2015, IT jobs across the Bristol 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 30 (53.57%) Apache
2 22 (39.29%) nginx
3 8 (14.29%) Tomcat
4 7 (12.50%) Confluence
4 7 (12.50%) MediaWiki
5 6 (10.71%) Elasticsearch
5 6 (10.71%) Apache Solr
6 3 (5.36%) GlassFish
7 2 (3.57%) JBoss
7 2 (3.57%) OpenStack
Business Applications
1 7 (12.50%) SAP Oil and Gas
Cloud Services
1 12 (21.43%) Amazon AWS
2 11 (19.64%) Amazon EC2
3 8 (14.29%) SaaS
4 4 (7.14%) Amazon S3
4 4 (7.14%) Virtual Private Cloud
5 2 (3.57%) OpenShift
Communications & Networking
1 14 (25.00%) LAN
1 14 (25.00%) WAN
1 14 (25.00%) Firewall
2 11 (19.64%) VPN
3 8 (14.29%) IPsec
4 7 (12.50%) Network Security
4 7 (12.50%) LDAP
4 7 (12.50%) IPv6
4 7 (12.50%) OSPF
4 7 (12.50%) BGP
4 7 (12.50%) EIGRP
5 3 (5.36%) SAN
6 2 (3.57%) DNS
6 2 (3.57%) SSH
7 1 (1.79%) NAS
7 1 (1.79%) SSL
7 1 (1.79%) TCP/IP
Database & Business Intelligence
1 25 (44.64%) MySQL
2 13 (23.21%) PostgreSQL
3 7 (12.50%) Relational Database
4 6 (10.71%) Hadoop
4 6 (10.71%) MongoDB
4 6 (10.71%) NoSQL
4 6 (10.71%) MariaDB
5 4 (7.14%) Hazelcast
5 4 (7.14%) Amazon RDS
Development Applications
1 17 (30.36%) Jenkins
2 16 (28.57%) Hudson
2 16 (28.57%) Subversion
2 16 (28.57%) Git (software)
3 7 (12.50%) JIRA
4 6 (10.71%) Mercurial
5 2 (3.57%) Oracle Forms
General
1 7 (12.50%) Electronics
1 7 (12.50%) Telecoms
1 7 (12.50%) Finance
1 7 (12.50%) Manufacturing
1 7 (12.50%) Marketing
2 3 (5.36%) Back Office
3 1 (1.79%) Advertising
Job Titles
1 17 (30.36%) DevOps Engineer
2 16 (28.57%) Linux Engineer
3 14 (25.00%) Systems Engineer
4 11 (19.64%) Systems Administrator
4 11 (19.64%) Administrator
5 9 (16.07%) Linux Systems Engineer
6 8 (14.29%) Linux DevOps Engineer
7 7 (12.50%) Support Engineer
8 6 (10.71%) UNIX Administrator
8 6 (10.71%) UNIX Systems Engineer
8 6 (10.71%) UNIX Engineer
8 6 (10.71%) UNIX Systems Administrator
8 6 (10.71%) Linux Administrator
9 4 (7.14%) Lead Java Developer
9 4 (7.14%) Java Developer
9 4 (7.14%) Senior Java Developer
9 4 (7.14%) Linux Systems Administrator
9 4 (7.14%) Lead Developer
9 4 (7.14%) Senior Developer
9 4 (7.14%) Junior
Libraries, Frameworks & Software Standards
1 14 (25.00%) LAMP
2 10 (17.86%) ActiveMQ
3 6 (10.71%) RabbitMQ
4 4 (7.14%) CSS
4 4 (7.14%) Servlets
4 4 (7.14%) Spring
4 4 (7.14%) jQuery
5 3 (5.36%) Middleware
6 2 (3.57%) libvirt
7 1 (1.79%) LINQ
Miscellaneous
1 15 (26.79%) Open Source
2 9 (16.07%) Derivative
3 7 (12.50%) DTV
3 7 (12.50%) Wiki
4 3 (5.36%) Client/Server
4 3 (5.36%) Clustering
5 1 (1.79%) Computer Science
Operating Systems
1 56 (100.00%) Linux
2 34 (60.71%) Ubuntu
3 33 (58.93%) Debian
4 32 (57.14%) Red Hat Enterprise Linux
5 23 (41.07%) Fedora
6 21 (37.50%) Windows
7 17 (30.36%) UNIX
8 11 (19.64%) Oracle Linux
9 10 (17.86%) Windows Server 2003
10 6 (10.71%) Windows Server 2012
10 6 (10.71%) Solaris
11 3 (5.36%) VMS
12 2 (3.57%) SUSE Linux Enterprise Server
13 1 (1.79%) FreeBSD
Processes & Methodologies
1 27 (48.21%) DevOps
2 20 (35.71%) Continuous Integration
3 18 (32.14%) Configuration Management
4 10 (17.86%) E-Commerce
5 9 (16.07%) Time Management
5 9 (16.07%) Agile Software Development
6 8 (14.29%) Scrum
6 8 (14.29%) Capacity Planning
7 7 (12.50%) Build Automation
7 7 (12.50%) Database Theory
7 7 (12.50%) Relational Database Theory
7 7 (12.50%) Programme Management
7 7 (12.50%) Disaster Recovery
7 7 (12.50%) Data Modelling
7 7 (12.50%) Business Intelligence
7 7 (12.50%) Digital Marketing
8 4 (7.14%) Unit Testing
8 4 (7.14%) Kanban
8 4 (7.14%) TDD
8 4 (7.14%) Software Engineering
Programming Languages
1 30 (53.57%) Bash Shell
2 29 (51.79%) PHP
3 27 (48.21%) Ruby
4 25 (44.64%) Python
4 25 (44.64%) Perl
5 15 (26.79%) Java
6 11 (19.64%) Shell Script
7 8 (14.29%) SQL
7 8 (14.29%) PHP5
8 4 (7.14%) Groovy
9 3 (5.36%) Korn
10 1 (1.79%) C#
Qualifications
1 7 (12.50%) CCNA
1 7 (12.50%) Cisco Certification
2 5 (8.93%) Degree
3 3 (5.36%) RHCE
Quality Assurance & Compliance
1 3 (5.36%) QA
System Software
1 16 (28.57%) VMware Infrastructure
2 15 (26.79%) Samba
3 9 (16.07%) Active Directory
4 7 (12.50%) Postfix
4 7 (12.50%) XenServer
4 7 (12.50%) iptables
5 6 (10.71%) Varnish
6 2 (3.57%) Gluster
6 2 (3.57%) KVM
6 2 (3.57%) Docker
6 2 (3.57%) RHEV
6 2 (3.57%) oVirt
6 2 (3.57%) GFS2
6 2 (3.57%) NFS
6 2 (3.57%) Squid
7 1 (1.79%) vSphere
7 1 (1.79%) vCloud
Systems Management
1 32 (57.14%) Puppet
2 26 (46.43%) Opscode Chef
3 14 (25.00%) Salt
4 13 (23.21%) Ansible
4 13 (23.21%) ZABBIX
5 11 (19.64%) Nagios
6 6 (10.71%) Icinga
6 6 (10.71%) Munin
6 6 (10.71%) Zenoss
6 6 (10.71%) HAProxy
7 3 (5.36%) Opsview
8 2 (3.57%) SELinux
8 2 (3.57%) Pacemaker
8 2 (3.57%) Red Hat Satellite
8 2 (3.57%) Cobbler
9 1 (1.79%) Capistrano
Vendors
1 39 (69.64%) Red Hat
2 19 (33.93%) VMware
3 11 (19.64%) Oracle
4 8 (14.29%) Citrix
5 7 (12.50%) SAP
6 6 (10.71%) Percona
7 1 (1.79%) Rackspace
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