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 salaries offered in IT jobs that have cited CentOS over the 3 months to 1 May 2016 with a comparison to the same period over the previous 2 years.

3 months to
1 May 2016
Same period 2015 Same period 2014
CentOS Linux
Rank 235 279 299
Rank change year-on-year
+44 +20
Permanent jobs citing CentOS 31 50 50
As % of all permanent IT jobs located in the City of London 0.44% 0.47% 0.40%
As % of the Operating Systems category 1.73% 1.81% 1.52%
Number of salaries quoted 31 44 36
Median salary £67,500 £43,750 £52,250
Median salary % change year-on-year
+54.28% -16.26%
90% offered a salary of more than £47,500 £32,500 £35,750
10% offered a salary of more than £85,000 £69,250 £57,500
UK excluding London median salary £47,500 £40,000 £37,500
% change year-on-year
+18.75% +6.66%
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
1790 2757 3296
As % of all permanent IT jobs located in the City of London 25.44% 25.95% 26.30%
Number of salaries quoted 1633 2394 2906
Median salary £52,500 £50,000 £49,000
Median salary % change year-on-year
+5.00% +2.04%
90% offered a salary of more than £30,000 £30,000 £29,000
10% offered a salary of more than £77,500 £70,000 £70,000
UK excluding London median salary £37,500 £37,500 £36,250
% change year-on-year
- +3.44%

CentOS
Jobs Demand Trend in the City of London

The demand trend of job ads across the City of London region citing CentOS as a proportion of all IT jobs with a match in 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 1 May 2016.

CentOS Salary Histogram in the City of London

CentOS
Top 30 Related IT Skills in the City of London

For the 6 months to 1 May 2016, IT jobs citing CentOS also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all job ads across the City of London region with a requirement for CentOS.

1 51 (85.00%) Linux
2 32 (53.33%) VMware
3 31 (51.67%) Puppet
4 28 (46.67%) PHP
5 27 (45.00%) Configuration Management
6 26 (43.33%) Red Hat
6 26 (43.33%) Python
6 26 (43.33%) Bash Shell
7 24 (40.00%) Git (software)
7 24 (40.00%) DevOps
7 24 (40.00%) Ruby
8 23 (38.33%) MySQL
9 22 (36.67%) Active Directory
9 22 (36.67%) Continuous Integration
9 22 (36.67%) Amazon AWS
10 21 (35.00%) VMware Infrastructure
10 21 (35.00%) Jenkins
10 21 (35.00%) Windows
11 19 (31.67%) Nagios
11 19 (31.67%) Agile Software Development
12 18 (30.00%) Java
12 18 (30.00%) Unix
13 17 (28.33%) Perl
13 17 (28.33%) Apache
14 16 (26.67%) Debian
14 16 (26.67%) Opscode Chef
15 15 (25.00%) LAMP
15 15 (25.00%) DNS
16 14 (23.33%) Finance
16 14 (23.33%) Red Hat Enterprise Linux

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

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 17 (28.33%) Apache
2 6 (10.00%) Apache Spark
2 6 (10.00%) IIS
2 6 (10.00%) Tomcat
3 3 (5.00%) Moodle
4 2 (3.33%) Confluence
4 2 (3.33%) MediaWiki
4 2 (3.33%) nginx
4 2 (3.33%) Node.js
4 2 (3.33%) OpenStack
Cloud Services
1 22 (36.67%) Amazon AWS
2 9 (15.00%) Microsoft Azure
3 8 (13.33%) Amazon S3
4 6 (10.00%) GitHub
5 5 (8.33%) Amazon CloudWatch
6 4 (6.67%) Amazon EC2
6 4 (6.67%) Amazon SQS
6 4 (6.67%) AWS CloudFormation
6 4 (6.67%) Azure Active Directory
6 4 (6.67%) Datadog
Communications & Networking
1 15 (25.00%) DNS
2 12 (20.00%) LDAP
3 8 (13.33%) Firewall
3 8 (13.33%) Internet
3 8 (13.33%) LAN
3 8 (13.33%) WAN
4 7 (11.67%) SSH
5 6 (10.00%) SSL
6 5 (8.33%) Kerberos
6 5 (8.33%) MRTG
7 4 (6.67%) SMS
7 4 (6.67%) SMTP
7 4 (6.67%) TCP/IP
8 3 (5.00%) IPv6
9 2 (3.33%) iSCSI
9 2 (3.33%) Network Security
9 2 (3.33%) SAN
9 2 (3.33%) tcpdump
9 2 (3.33%) VPN
9 2 (3.33%) Wireshark
Database & Business Intelligence
1 23 (38.33%) MySQL
2 11 (18.33%) PostgreSQL
3 6 (10.00%) Hadoop
4 5 (8.33%) NoSQL
5 4 (6.67%) Amazon RDS
6 3 (5.00%) Relational Database
7 2 (3.33%) Apache Cassandra
7 2 (3.33%) Big Data
7 2 (3.33%) DB2
7 2 (3.33%) Oracle Database
8 1 (1.67%) Data Warehouse
Development Applications
1 24 (40.00%) Git (software)
2 21 (35.00%) Jenkins
3 10 (16.67%) Atlassian Bamboo
4 8 (13.33%) Maven
4 8 (13.33%) Subversion
5 6 (10.00%) GitLab
5 6 (10.00%) JIRA
5 6 (10.00%) PHPUnit
5 6 (10.00%) Selenium
6 4 (6.67%) TeamCity
7 2 (3.33%) Ant
7 2 (3.33%) GCC
7 2 (3.33%) Gradle
7 2 (3.33%) Hudson
7 2 (3.33%) Sonatype Nexus
7 2 (3.33%) Vagrant
General
1 14 (23.33%) Finance
2 8 (13.33%) Games
3 6 (10.00%) Telecoms
4 5 (8.33%) Marketing
5 4 (6.67%) Banking
6 2 (3.33%) Advertising
7 1 (1.67%) Back Office
Job Titles
1 22 (36.67%) DevOps Engineer
2 18 (30.00%) Linux Engineer
3 10 (16.67%) Administrator
3 10 (16.67%) Developer
4 8 (13.33%) Systems Administrator
5 7 (11.67%) Java Developer
5 7 (11.67%) Senior Developer
5 7 (11.67%) Senior Java Developer
6 5 (8.33%) Analyst
6 5 (8.33%) Cloud Engineer
6 5 (8.33%) Linux DevOps Engineer
6 5 (8.33%) Linux Systems Engineer
6 5 (8.33%) Linux/Unix DevOps
6 5 (8.33%) Senior Analyst
7 4 (6.67%) AWS Engineer
7 4 (6.67%) Governance Analyst
7 4 (6.67%) Information Governance Analyst
7 4 (6.67%) Senior DevOps Engineer
7 4 (6.67%) Senior Information Security Analyst
7 4 (6.67%) Senior Windows Engineer
Libraries, Frameworks & Software Standards
1 15 (25.00%) LAMP
2 10 (16.67%) jQuery
3 9 (15.00%) Web Services
4 7 (11.67%) GWT
4 7 (11.67%) Sass
4 7 (11.67%) Thymeleaf
5 6 (10.00%) Behat
5 6 (10.00%) Sensu
6 4 (6.67%) CSS
6 4 (6.67%) HTML
6 4 (6.67%) RabbitMQ
6 4 (6.67%) Symfony
6 4 (6.67%) WebSockets
7 3 (5.00%) Ajax
7 3 (5.00%) FIX Protocol
8 2 (3.33%) ELK Stack
8 2 (3.33%) LEMP Stack
8 2 (3.33%) Middleware
8 2 (3.33%) REST
8 2 (3.33%) ZeroMQ
Miscellaneous
1 7 (11.67%) Fintech
1 7 (11.67%) Mathematics
1 7 (11.67%) PKI
1 7 (11.67%) Wiki
2 6 (10.00%) Computer Science
2 6 (10.00%) User Experience
3 5 (8.33%) Data Centre
3 5 (8.33%) Management Information System
4 4 (6.67%) Replication
4 4 (6.67%) VCE vBlock
5 3 (5.00%) e-Learning
5 3 (5.00%) Learning Management System
5 3 (5.00%) VLE
6 2 (3.33%) HP StoreVirtual
7 1 (1.67%) EMC VNX
7 1 (1.67%) Hedge funds
7 1 (1.67%) Hybrid Cloud
7 1 (1.67%) Tandem
Operating Systems
1 51 (85.00%) Linux
2 21 (35.00%) Windows
3 18 (30.00%) Unix
4 16 (26.67%) Debian
5 14 (23.33%) Red Hat Enterprise Linux
6 9 (15.00%) Windows Server
7 7 (11.67%) Windows Server 2008
7 7 (11.67%) Windows Server 2012
8 6 (10.00%) Amazon Linux
8 6 (10.00%) Ubuntu
9 5 (8.33%) FreeBSD
10 2 (3.33%) Oracle Linux
10 2 (3.33%) VMS
10 2 (3.33%) Windows Server 2003
11 1 (1.67%) Mac OS X
Processes & Methodologies
1 27 (45.00%) Configuration Management
2 24 (40.00%) DevOps
3 22 (36.67%) Continuous Integration
4 19 (31.67%) Agile Software Development
5 10 (16.67%) Scrum
6 9 (15.00%) E-Commerce
6 9 (15.00%) Web Development
7 6 (10.00%) Automated Testing
7 6 (10.00%) Disaster Recovery
7 6 (10.00%) Load Balancing
7 6 (10.00%) Open Source
7 6 (10.00%) Server Virtualisation
7 6 (10.00%) Workflow
8 5 (8.33%) Analytics
8 5 (8.33%) Data Modelling
8 5 (8.33%) ITIL
9 4 (6.67%) Business Intelligence
9 4 (6.67%) Capacity Planning
9 4 (6.67%) SOA
9 4 (6.67%) Web Application Development
Programming Languages
1 28 (46.67%) PHP
2 26 (43.33%) Bash Shell
2 26 (43.33%) Python
3 24 (40.00%) Ruby
4 18 (30.00%) Java
5 17 (28.33%) Perl
6 10 (16.67%) SQL
7 6 (10.00%) JavaScript
7 6 (10.00%) PowerShell
8 5 (8.33%) C
9 2 (3.33%) Groovy
9 2 (3.33%) Shell Script
10 1 (1.67%) PHP 5
10 1 (1.67%) T-SQL
Qualifications
1 7 (11.67%) VMware Certified Professional (VCP)
2 6 (10.00%) Degree
2 6 (10.00%) MCITP
2 6 (10.00%) Microsoft Certification
3 4 (6.67%) AWS Certification
4 3 (5.00%) CCNP
4 3 (5.00%) Cisco Certification
5 1 (1.67%) CCNA
5 1 (1.67%) RHCE
Quality Assurance & Compliance
1 4 (6.67%) ISO/IEC 27001
2 1 (1.67%) QA
System Software
1 22 (36.67%) Active Directory
2 21 (35.00%) VMware Infrastructure
3 10 (16.67%) Docker
4 8 (13.33%) VMware ESXi
5 7 (11.67%) Postfix
6 6 (10.00%) Corosync
6 6 (10.00%) VMware ESX
7 5 (8.33%) KVM
7 5 (8.33%) oVirt
7 5 (8.33%) Xen
8 3 (5.00%) vSphere
9 2 (3.33%) iptables
9 2 (3.33%) NFS
9 2 (3.33%) Samba
9 2 (3.33%) XenServer
Systems Management
1 31 (51.67%) Puppet
2 19 (31.67%) Nagios
3 16 (26.67%) Opscode Chef
4 10 (16.67%) Ansible
4 10 (16.67%) Cacti
5 6 (10.00%) Graphite
5 6 (10.00%) HAProxy
5 6 (10.00%) Pacemaker
5 6 (10.00%) Red Hat Spacewalk
5 6 (10.00%) Salt
6 5 (8.33%) Munin
6 5 (8.33%) SELinux
7 4 (6.67%) Rundeck
8 3 (5.00%) Ganglia
8 3 (5.00%) logstash
8 3 (5.00%) ZABBIX
Vendors
1 32 (53.33%) VMware
2 26 (43.33%) Red Hat
3 9 (15.00%) Cisco
4 8 (13.33%) Rackspace
5 6 (10.00%) Atlassian
5 6 (10.00%) Microsoft
6 5 (8.33%) New Relic
6 5 (8.33%) Percona
6 5 (8.33%) Splunk
7 4 (6.67%) Akamai
7 4 (6.67%) Citrix
7 4 (6.67%) SaltStack
8 3 (5.00%) Facebook
8 3 (5.00%) Google
8 3 (5.00%) Oracle
9 2 (3.33%) 3PAR
9 2 (3.33%) HP
9 2 (3.33%) IBM
9 2 (3.33%) NetApp
9 2 (3.33%) SolarWinds
City, London
Harrington Starr
Salary: £75000 - £90000 per annum
Posted: Yesterday
City, London
Miller Maxwell Ltd
Salary: From £50,000 to £70,000 per annum + Bonus & Benefits
Posted: 4 days ago
City, London
Algomi
Salary: Unspecified
Posted: 4 days ago
City, London
Harvey Nash plc
Salary: £35000 - £45000 per annum
Posted: 4 days ago
City, London
RecruitmentRevolution.com Limited
Salary: From £35,000 to £50,000 per annum + Benefits
Posted: 5 days ago
City, London
Oscar
Salary: £40000 - £50000 per annum + 35% Bonus, 25 days, Flexitime
Posted: 6 days ago
City, London
Miller Maxwell Ltd
Salary: From £50,000 to £80,000 per annum + Benefits + Bonus
Posted: 6 days ago
City, London
Rival Systems
Salary: Competitive base, bonus, and benefits
Posted: 17 days ago