The following table provides summary statistics for permanent job vacancies advertised in Reading with a requirement for CentOS skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited CentOS over the 3 months to 27 March 2017 with a comparison to the same period in the previous 2 years.

3 months to
27 Mar 2017
Same period 2016 Same period 2015
CentOS Linux
Berkshire / Reading
Rank 69 123 121
Rank change year-on-year +54 -2  
Permanent jobs citing CentOS 38 22 32
As % of all permanent IT jobs advertised in Reading 3.07% 1.13% 1.32%
As % of the Operating Systems category 9.07% 3.62% 4.99%
Number of salaries quoted 26 22 31
Median salary £46,250 £48,750 £36,000
Median salary % change year-on-year -5.12% +35.41%  
90% offered a salary of more than £37,000 £40,000 £22,000
10% offered a salary of more than £60,000 £50,000 £36,500
UK excluding London median salary £43,000 £45,000 £42,500
% change year-on-year -4.44% +5.88%  

CentOS is in the operating system skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in Reading with a requirement for operating system skills.

Operating System Skills
Reading
Permanent job vacancies with a requirement for operating system skills 419 608 641
As % of all permanent IT job vacancies advertised in Reading 33.82% 31.20% 26.43%
Number of salaries quoted 318 555 476
Median salary £45,000 £45,000 £40,000
Median salary % change year-on-year - +12.50%  
90% offered a salary of more than £26,500 £29,000 £22,500
10% offered a salary of more than £60,000 £65,000 £60,000
UK excluding London median salary £37,500 £37,500 £37,500

CentOS
Job Vacancy Trend in Reading

The job posting trend of jobs advertised in Reading citing CentOS as a proportion of all permanent or contract IT jobs with a match in the Operating Systems category.

Job vacancy trend for CentOS in Reading

CentOS
Salary Trend in Reading

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

Salary trend for CentOS in Reading

CentOS
Salary Histogram in Reading

The salary distribution of IT jobs citing CentOS in Reading over the 3 months to 27 March 2017.

Salary histogram for CentOS in Reading

CentOS
Top 30 Related IT Skills in Reading

For the 6 months to 27 March 2017, 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 Reading region with a requirement for CentOS.

1 70 (100.00%) Linux
2 41 (58.57%) Python
3 34 (48.57%) Bash Shell
4 31 (44.29%) Windows
5 29 (41.43%) Unix
5 29 (41.43%) Puppet
6 27 (38.57%) Git (software)
7 25 (35.71%) Ubuntu
7 25 (35.71%) Red Hat Enterprise Linux
8 24 (34.29%) Java
8 24 (34.29%) Oracle
9 23 (32.86%) MySQL
10 22 (31.43%) Red Hat
10 22 (31.43%) Security Cleared
11 21 (30.00%) Configuration Management
12 20 (28.57%) SaaS
12 20 (28.57%) Open Source
12 20 (28.57%) High Availability
13 19 (27.14%) Amazon AWS
13 19 (27.14%) Apache
14 17 (24.29%) SQL
14 17 (24.29%) TCP/IP
14 17 (24.29%) Opscode Chef
14 17 (24.29%) DevOps
15 16 (22.86%) Hadoop
15 16 (22.86%) Shell Script
15 16 (22.86%) Debian
16 15 (21.43%) Firewall
16 15 (21.43%) VMware
16 15 (21.43%) Data Centre

CentOS
Top Related IT Skills in Reading 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 19 (27.14%) Apache
2 12 (17.14%) IIS
3 10 (14.29%) Elasticsearch
4 9 (12.86%) WebLogic
5 7 (10.00%) nginx
6 6 (8.57%) Apache Solr
6 6 (8.57%) Tomcat
6 6 (8.57%) WebSphere
7 3 (4.29%) JBoss
7 3 (4.29%) MQSeries
8 2 (2.86%) IBM Notes
8 2 (2.86%) MS Exchange
9 1 (1.43%) Exchange Server 2010
Applications
1 1 (1.43%) MS Office
Business Applications
1 6 (8.57%) Eloqua
1 6 (8.57%) Oracle EBS
Cloud Services
1 20 (28.57%) SaaS
2 19 (27.14%) Amazon AWS
3 13 (18.57%) Amazon EC2
4 6 (8.57%) Amazon ELB
4 6 (8.57%) Amazon S3
4 6 (8.57%) Google App Engine
4 6 (8.57%) Google Cloud Platform
4 6 (8.57%) Responsys
4 6 (8.57%) Taleo
5 5 (7.14%) Oracle CX
Communications & Networking
1 17 (24.29%) TCP/IP
2 15 (21.43%) Firewall
3 8 (11.43%) DNS
3 8 (11.43%) VPN
4 7 (10.00%) Cisco ASA
4 7 (10.00%) Cisco PIX
4 7 (10.00%) DHCP
4 7 (10.00%) SAN
4 7 (10.00%) SSH
5 6 (8.57%) Cisco Nexus
5 6 (8.57%) OpenVPN
6 5 (7.14%) LAN
6 5 (7.14%) WAN
7 4 (5.71%) SSL
8 3 (4.29%) LDAP
9 2 (2.86%) HTTP
9 2 (2.86%) ICMP
10 1 (1.43%) IMAP
10 1 (1.43%) VLAN
10 1 (1.43%) Wi-Fi
Database & Business Intelligence
1 23 (32.86%) MySQL
2 16 (22.86%) Hadoop
3 13 (18.57%) MongoDB
3 13 (18.57%) PostgreSQL
3 13 (18.57%) SQL Server
4 8 (11.43%) Big Data
4 8 (11.43%) Oracle Database
5 7 (10.00%) Neo4j
5 7 (10.00%) Pentaho
6 6 (8.57%) Apache Cassandra
6 6 (8.57%) Oracle Reports
6 6 (8.57%) RDBMS
6 6 (8.57%) Relational Database
7 4 (5.71%) DB2
7 4 (5.71%) NoSQL
7 4 (5.71%) Redis
7 4 (5.71%) SQLite
8 3 (4.29%) Informix
8 3 (4.29%) SQL Server 2005
8 3 (4.29%) SQL Server 2008
Development Applications
1 27 (38.57%) Git (software)
2 11 (15.71%) Jenkins
3 7 (10.00%) Talend Open Studio
4 6 (8.57%) Sonatype Nexus
4 6 (8.57%) Subversion
5 2 (2.86%) JIRA
6 1 (1.43%) Bugzilla
6 1 (1.43%) Trac
General
1 7 (10.00%) Finance
2 4 (5.71%) Electronics
3 3 (4.29%) Marketing
4 2 (2.86%) Advertising
4 2 (2.86%) Banking
Job Titles
1 23 (32.86%) Administrator
2 22 (31.43%) Systems Administrator
3 13 (18.57%) Developer
4 12 (17.14%) Linux Administrator
5 11 (15.71%) Linux Systems Administrator
5 11 (15.71%) Open Source Developer
6 9 (12.86%) Senior Systems Administrator
7 8 (11.43%) DevOps Engineer
7 8 (11.43%) Support Engineer
8 7 (10.00%) Linux Engineer
8 7 (10.00%) Systems Engineer
9 6 (8.57%) Big Data Developer
9 6 (8.57%) DBA
9 6 (8.57%) Junior
9 6 (8.57%) Oracle Applications DBA
9 6 (8.57%) Oracle DBA
10 5 (7.14%) IT Manager
10 5 (7.14%) Linux Support
10 5 (7.14%) Senior Linux Administrator
10 5 (7.14%) Senior Linux Systems Administrator
Libraries, Frameworks & Software Standards
1 12 (17.14%) Elastic Stack
2 11 (15.71%) LAMP
3 7 (10.00%) ActiveMQ
3 7 (10.00%) AngularJS
3 7 (10.00%) Apache Camel
3 7 (10.00%) Apache CXF
3 7 (10.00%) D3.js
3 7 (10.00%) Drools
3 7 (10.00%) jBPM
3 7 (10.00%) Node.js
3 7 (10.00%) Web Services
4 6 (8.57%) Kafka
4 6 (8.57%) Middleware
4 6 (8.57%) Oracle Fusion
4 6 (8.57%) RabbitMQ
5 3 (4.29%) .NET
5 3 (4.29%) ASP.NET
5 3 (4.29%) WebSphere MQ
Miscellaneous
1 15 (21.43%) Data Centre
2 12 (17.14%) Analytical Skills
3 9 (12.86%) Computer Science
4 7 (10.00%) Enterprise Software
4 7 (10.00%) Linux Command Line
5 6 (8.57%) Management Information System
5 6 (8.57%) Public Cloud
6 5 (7.14%) Fintech
7 2 (2.86%) Celerra
7 2 (2.86%) Replication
Operating Systems
1 70 (100.00%) Linux
2 31 (44.29%) Windows
3 29 (41.43%) Unix
4 25 (35.71%) Red Hat Enterprise Linux
4 25 (35.71%) Ubuntu
5 16 (22.86%) Debian
6 12 (17.14%) Solaris
7 9 (12.86%) Windows Server
8 8 (11.43%) Oracle Linux
9 7 (10.00%) Windows Server 2008
9 7 (10.00%) Windows Server 2012
10 4 (5.71%) AIX
10 4 (5.71%) HPUX
10 4 (5.71%) Windows 8
11 2 (2.86%) SUSE
12 1 (1.43%) Mac OS X
Processes & Methodologies
1 21 (30.00%) Configuration Management
2 20 (28.57%) High Availability
2 20 (28.57%) Open Source
3 17 (24.29%) DevOps
4 13 (18.57%) Load Balancing
5 12 (17.14%) Open Source Development
6 10 (14.29%) Performance Monitoring
7 9 (12.86%) Performance Management
7 9 (12.86%) Reverse Engineering
8 8 (11.43%) Agile Software Development
8 8 (11.43%) Trend Analysis
9 7 (10.00%) BDD
9 7 (10.00%) Logistics
9 7 (10.00%) Scrum
9 7 (10.00%) TDD
10 6 (8.57%) Continuous Improvement
10 6 (8.57%) ETL
10 6 (8.57%) Line Management
10 6 (8.57%) Mentoring
10 6 (8.57%) Statistics
Programming Languages
1 41 (58.57%) Python
2 34 (48.57%) Bash Shell
3 24 (34.29%) Java
4 17 (24.29%) SQL
5 16 (22.86%) Shell Script
6 13 (18.57%) Perl
7 8 (11.43%) PHP
8 7 (10.00%) Jython
9 6 (8.57%) JavaScript
10 5 (7.14%) Groovy
11 3 (4.29%) PL/SQL
11 3 (4.29%) Tcl
12 1 (1.43%) Ruby
Qualifications
1 22 (31.43%) Security Cleared
2 13 (18.57%) Degree
3 11 (15.71%) SC Cleared
4 2 (2.86%) AWS Certification
5 1 (1.43%) HND
System Software
1 14 (20.00%) XenServer
2 11 (15.71%) Docker
3 10 (14.29%) Hyper-V
3 10 (14.29%) KVM
4 9 (12.86%) VMware Infrastructure
5 6 (8.57%) Varnish
6 4 (5.71%) VirtualBox
6 4 (5.71%) VMware ESXi
7 2 (2.86%) Active Directory
8 1 (1.43%) vSphere
Systems Management
1 29 (41.43%) Puppet
2 17 (24.29%) Opscode Chef
3 9 (12.86%) Oracle Enterprise Manager
4 7 (10.00%) Ansible
5 6 (8.57%) HAProxy
5 6 (8.57%) Kibana
5 6 (8.57%) logstash
5 6 (8.57%) ZABBIX
6 5 (7.14%) Graphite
7 4 (5.71%) Salt
8 3 (4.29%) EMC NetWorker
9 2 (2.86%) Backup Exec
9 2 (2.86%) HP Data Protector
9 2 (2.86%) NetBackup
9 2 (2.86%) Oracle RMAN
9 2 (2.86%) SELinux
9 2 (2.86%) SnapMirror
9 2 (2.86%) SnapVault
9 2 (2.86%) Terraform
Vendors
1 24 (34.29%) Oracle
2 22 (31.43%) Red Hat
3 15 (21.43%) VMware
4 14 (20.00%) Sun
5 13 (18.57%) Cisco
6 9 (12.86%) HP
7 7 (10.00%) Dell
7 7 (10.00%) Talend
8 6 (8.57%) New Relic
9 4 (5.71%) EMC
9 4 (5.71%) Microsoft
9 4 (5.71%) NetApp
9 4 (5.71%) Rackspace
9 4 (5.71%) Sybase
9 4 (5.71%) Veeam
9 4 (5.71%) Veritas
10 3 (4.29%) arcserve
11 2 (2.86%) CommVault
11 2 (2.86%) Lotus
11 2 (2.86%) SAP
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