Period
to 23 November 2017

The following table provides summary statistics for permanent job vacancies advertised in the South East with a requirement for CentOS skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited CentOS over the 6 months to 23 November 2017 with a comparison to the same period in the previous 2 years.

CentOS Linux
England > South East
6 months to
23 Nov 2017
Same period 2016 Same period 2015
Rank 255 272 321
Rank change year-on-year +17 +49 +57
Permanent jobs citing CentOS 370 381 407
As % of all permanent IT jobs advertised in the South East 1.20% 1.09% 0.96%
As % of the Operating Systems category 4.38% 3.84% 3.30%
Number of salaries quoted 334 364 383
South East median annual salary £45,000 £50,000 £42,500
Median salary % change year-on-year -10.00% +17.65% -
10th Percentile £27,000 £32,500 £23,750
90th Percentile £67,500 £66,750 £65,000
England median annual salary £50,000 £50,000 £47,500
% change year-on-year - +5.26% +5.56%

CentOS is in the Operating Systems category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in the South East with a requirement for operating system skills.

All Operating Systems
South East
Permanent vacancies with a requirement for operating system skills 8453 9934 12334
As % of all permanent IT jobs advertised in the South East 27.46% 28.31% 28.97%
Number of salaries quoted 7288 8501 10612
South East median annual salary £40,000 £42,500 £40,000
Median salary % change year-on-year -5.88% +6.25% -
10th Percentile £22,500 £23,750 £23,006
90th Percentile £63,000 £63,750 £61,250
England median annual salary £45,000 £45,000 £45,000

CentOS
Job Vacancy Trend in the South East

Job postings citing CentOS as a percentage of all IT jobs advertised in the South East.

Job vacancy trend for CentOS in the South East

CentOS
Salary Trend in the South East

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

Salary trend for CentOS in the South East

CentOS
Salary Histogram in the South East

The salary distribution of IT jobs citing CentOS in the South East over the 6 months to 23 November 2017.

Salary histogram for CentOS in the South East

CentOS
Job Locations in the South East

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the South East region over the 6 months to 23 November 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Thames Valley +58 147 £45,000 -10.00% 11
Berkshire +49 123 £45,000 -10.00% 5
Hampshire -21 117 £40,000 -15.79% 7
Surrey -12 60 £60,000 +9.09% 4
West Sussex +30 31 £57,000 +52.00%
Oxfordshire +24 23 £50,000 +42.86% 5
East Sussex -9 14 £35,000 - 1
Kent +16 5 £40,000 +21.21% 1
Buckinghamshire +12 2 £50,000 +81.82% 1
CentOS
England

For the 6 months to 23 November 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 South East region with a requirement for CentOS.

1 370 (100.00%) Linux
2 205 (55.41%) Red Hat
3 170 (45.95%) Python
4 146 (39.46%) DevOps
5 143 (38.65%) Bash Shell
6 142 (38.38%) Windows
7 119 (32.16%) Puppet
8 115 (31.08%) VMware
9 113 (30.54%) Opscode Chef
10 103 (27.84%) Red Hat Enterprise Linux
11 96 (25.95%) Amazon AWS
12 92 (24.86%) Ubuntu
12 92 (24.86%) Perl
12 92 (24.86%) MySQL
13 89 (24.05%) Ansible
14 88 (23.78%) Docker
15 82 (22.16%) VMware Infrastructure
16 78 (21.08%) Cisco
17 67 (18.11%) Open Source
18 61 (16.49%) TCP/IP
18 61 (16.49%) Microsoft
19 60 (16.22%) Java
20 57 (15.41%) Configuration Management
20 57 (15.41%) Agile Software Development
20 57 (15.41%) Git (software)
21 52 (14.05%) DNS
22 51 (13.78%) ITIL
23 50 (13.51%) SAN
24 49 (13.24%) Firewall
25 48 (12.97%) Unix

CentOS
Co-occurring IT Skills in the South East 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 47 (12.70%) Apache
2 37 (10.00%) OpenStack
3 32 (8.65%) nginx
4 29 (7.84%) IIS
5 24 (6.49%) Elasticsearch
6 15 (4.05%) MS Exchange
7 10 (2.70%) JBoss
8 9 (2.43%) Skype for Business
9 8 (2.16%) Cloud Foundry
9 8 (2.16%) Confluence
10 7 (1.89%) Zimbra
11 4 (1.08%) Exchange Server 2013
12 3 (0.81%) Exchange Server 2003
12 3 (0.81%) Exchange Server 2010
12 3 (0.81%) lighttpd
12 3 (0.81%) Tomcat
13 1 (0.27%) Apache Spark
13 1 (0.27%) Oracle Service Bus
13 1 (0.27%) SharePoint
13 1 (0.27%) SharePoint 2010
Applications
1 13 (3.51%) Microsoft Office
2 3 (0.81%) SOLIDWORKS
Business Applications
1 3 (0.81%) Epicor Vantage
2 2 (0.54%) Payment Gateway
Cloud Services
1 96 (25.95%) Amazon AWS
2 47 (12.70%) Microsoft Azure
3 34 (9.19%) SaaS
4 15 (4.05%) Amazon EC2
4 15 (4.05%) GitHub
5 11 (2.97%) OpenShift
6 9 (2.43%) PaaS
7 8 (2.16%) Amazon S3
8 5 (1.35%) Akamai
8 5 (1.35%) Amazon ELB
8 5 (1.35%) AWS CloudFormation
8 5 (1.35%) Virtual Private Cloud
9 4 (1.08%) Google Cloud Platform
10 3 (0.81%) IaaS
10 3 (0.81%) Office 365
11 1 (0.27%) Bluemix
11 1 (0.27%) Cloud Computing
11 1 (0.27%) IBM Cloud
11 1 (0.27%) SoftLayer
Communications & Networking
1 61 (16.49%) TCP/IP
2 52 (14.05%) DNS
3 50 (13.51%) SAN
4 49 (13.24%) Firewall
5 41 (11.08%) WAN
6 36 (9.73%) VoIP
7 35 (9.46%) DHCP
8 32 (8.65%) Internet
9 28 (7.57%) VPN
10 25 (6.76%) Wireshark
11 22 (5.95%) LAN
11 22 (5.95%) RTP
12 18 (4.86%) SSL
13 16 (4.32%) IPsec
14 13 (3.51%) NAS
14 13 (3.51%) OSPF
15 12 (3.24%) BGP
16 11 (2.97%) Cisco IOS
16 11 (2.97%) HTTP
17 9 (2.43%) Skype
Database & Business Intelligence
1 92 (24.86%) MySQL
2 47 (12.70%) MongoDB
3 38 (10.27%) Big Data
4 37 (10.00%) SQL Server
5 35 (9.46%) PostgreSQL
6 26 (7.03%) Hadoop
6 26 (7.03%) Redis
7 17 (4.59%) NoSQL
8 13 (3.51%) Apache Cassandra
8 13 (3.51%) Neo4j
8 13 (3.51%) Pentaho
9 5 (1.35%) InfluxDB
10 4 (1.08%) DB2
10 4 (1.08%) SQLite
11 3 (0.81%) CorVu
11 3 (0.81%) MariaDB
12 1 (0.27%) Amazon DynamoDB
12 1 (0.27%) Oracle Database
12 1 (0.27%) Oracle Database 11g
12 1 (0.27%) Oracle Database 12c
Development Applications
1 57 (15.41%) Git (software)
2 39 (10.54%) Jenkins
3 13 (3.51%) Talend Open Studio
4 11 (2.97%) Subversion
5 10 (2.70%) Vagrant
6 9 (2.43%) GitLab
6 9 (2.43%) JIRA
7 7 (1.89%) Maven
8 5 (1.35%) GoCD
8 5 (1.35%) TeamCity
9 4 (1.08%) Ant
9 4 (1.08%) Atlassian Bamboo
10 2 (0.54%) git-flow
11 1 (0.27%) NetBeans
11 1 (0.27%) PhpStorm
11 1 (0.27%) PHPUnit
11 1 (0.27%) QUnit
General
1 31 (8.38%) Telecoms
2 26 (7.03%) Finance
3 25 (6.76%) Banking
4 8 (2.16%) Advertising
5 5 (1.35%) Law
6 4 (1.08%) Aerospace
6 4 (1.08%) Manufacturing
6 4 (1.08%) Military
7 3 (0.81%) Back Office
7 3 (0.81%) French Language
8 2 (0.54%) Billing
8 2 (0.54%) Marketing
8 2 (0.54%) Publishing
9 1 (0.27%) Electronics
9 1 (0.27%) Front Office
9 1 (0.27%) Games
9 1 (0.27%) Investment Banking
Job Titles
1 86 (23.24%) DevOps Engineer
2 50 (13.51%) Developer
3 46 (12.43%) Administrator
3 46 (12.43%) Linux Engineer
4 40 (10.81%) Systems Administrator
5 39 (10.54%) Linux Administrator
6 38 (10.27%) Linux Systems Administrator
7 36 (9.73%) Systems Engineer
8 33 (8.92%) AWS Engineer
9 30 (8.11%) AWS DevOps
10 29 (7.84%) AWS DevOps Engineer
11 25 (6.76%) Cloud Engineer
12 22 (5.95%) Support Engineer
13 20 (5.41%) Junior
14 19 (5.14%) Infrastructure Engineer
15 18 (4.86%) Linux/Unix DevOps
16 17 (4.59%) Linux Systems Engineer
17 16 (4.32%) Junior DevOps
17 16 (4.32%) Junior DevOps Engineer
17 16 (4.32%) PHP Developer
Libraries, Frameworks & Software Standards
1 29 (7.84%) LAMP
2 28 (7.57%) HTML
3 23 (6.22%) CSS
4 22 (5.95%) AngularJS
5 18 (4.86%) HTML5
5 18 (4.86%) Node.js
6 17 (4.59%) Elastic Stack
7 15 (4.05%) Web Services
8 14 (3.78%) Spring
8 14 (3.78%) Symfony
9 13 (3.51%) ActiveMQ
9 13 (3.51%) Apache Camel
9 13 (3.51%) Apache CXF
9 13 (3.51%) D3.js
9 13 (3.51%) Drools
9 13 (3.51%) jBPM
10 11 (2.97%) Twitter Bootstrap
11 9 (2.43%) CSS3
12 8 (2.16%) Middleware
13 7 (1.89%) LEMP Stack
Miscellaneous
1 43 (11.62%) Data Centre
2 39 (10.54%) Computer Science
3 24 (6.49%) Fintech
4 16 (4.32%) Greenfield Project
4 16 (4.32%) Public Cloud
5 15 (4.05%) Private Cloud
6 14 (3.78%) Management Information System
7 12 (3.24%) Cloud Native
7 12 (3.24%) Linux Command Line
8 10 (2.70%) Analytical Skills
9 6 (1.62%) Derivative
10 5 (1.35%) Driving Licence
10 5 (1.35%) Enterprise Cloud
11 4 (1.08%) Client/Server
11 4 (1.08%) Replication
12 3 (0.81%) Enterprise Software
12 3 (0.81%) PKI
13 2 (0.54%) Device Driver
14 1 (0.27%) Mobile Banking
14 1 (0.27%) Video on Demand
Operating Systems
1 370 (100.00%) Linux
2 142 (38.38%) Windows
3 103 (27.84%) Red Hat Enterprise Linux
4 92 (24.86%) Ubuntu
5 48 (12.97%) Unix
6 44 (11.89%) Debian
7 31 (8.38%) Windows Server 2012
8 25 (6.76%) Windows Server 2008
9 24 (6.49%) Windows Server
10 14 (3.78%) Windows 10
11 9 (2.43%) Solaris
12 8 (2.16%) Amazon Linux
13 7 (1.89%) Fedora
13 7 (1.89%) Oracle Linux
14 5 (1.35%) FreeBSD
15 4 (1.08%) Windows 8
15 4 (1.08%) Windows Server 2003
16 3 (0.81%) Kali Linux
17 2 (0.54%) Mac OS X
18 1 (0.27%) SUSE
Processes & Methodologies
1 146 (39.46%) DevOps
2 67 (18.11%) Open Source
3 57 (15.41%) Agile Software Development
3 57 (15.41%) Configuration Management
4 51 (13.78%) ITIL
5 39 (10.54%) Continuous Integration
6 38 (10.27%) High Availability
7 28 (7.57%) Scrum
7 28 (7.57%) Software Engineering
7 28 (7.57%) TDD
8 26 (7.03%) Capacity Planning
8 26 (7.03%) Incident Management
9 25 (6.76%) Continuous Delivery
10 24 (6.49%) Migration
11 21 (5.68%) CRM
12 20 (5.41%) Disaster Recovery
12 20 (5.41%) Load Balancing
13 18 (4.86%) Business Continuity
13 18 (4.86%) Web Development
14 17 (4.59%) OOP
Programming Languages
1 170 (45.95%) Python
2 143 (38.65%) Bash Shell
3 92 (24.86%) Perl
4 60 (16.22%) Java
5 46 (12.43%) SQL
6 44 (11.89%) Ruby
7 40 (10.81%) JavaScript
8 39 (10.54%) PHP
9 31 (8.38%) PowerShell
10 22 (5.95%) Lua
11 15 (4.05%) Shell Script
12 13 (3.51%) C
12 13 (3.51%) Jython
13 11 (2.97%) PHP 5
14 9 (2.43%) C++
14 9 (2.43%) Scala
15 8 (2.16%) Go
16 6 (1.62%) ES6
17 5 (1.35%) Korn
18 4 (1.08%) HQL
Qualifications
1 45 (12.16%) Degree
2 40 (10.81%) Security Cleared
3 33 (8.92%) SC Cleared
4 32 (8.65%) Microsoft Certification
5 24 (6.49%) AWS Certification
6 19 (5.14%) MCSE
7 14 (3.78%) RHCSA
8 13 (3.51%) RHCE
9 12 (3.24%) Cisco Certification
10 11 (2.97%) CCNP
10 11 (2.97%) RHCA
11 10 (2.70%) MCP
12 8 (2.16%) ITIL Foundation Certificate
13 6 (1.62%) CCNA
13 6 (1.62%) Computer Science Degree
13 6 (1.62%) DV Cleared
14 5 (1.35%) HND
14 5 (1.35%) VCAP
15 3 (0.81%) CCDP
15 3 (0.81%) VMware Certified Professional (VCP)
Quality Assurance & Compliance
1 25 (6.76%) SLA
2 10 (2.70%) ISO 9001
2 10 (2.70%) QA
3 9 (2.43%) PCI DSS
4 2 (0.54%) GCP
5 1 (0.27%) ISO/IEC 27001
System Software
1 88 (23.78%) Docker
2 82 (22.16%) VMware Infrastructure
3 46 (12.43%) Active Directory
4 42 (11.35%) vSphere
5 33 (8.92%) Hyper-V
6 22 (5.95%) Kamailio
7 21 (5.68%) KVM
7 21 (5.68%) VMware ESXi
8 19 (5.14%) vCloud
9 11 (2.97%) Virtual Machines
10 9 (2.43%) GlusterFS
11 8 (2.16%) VMware NSX
11 8 (2.16%) Xen
12 7 (1.89%) Terminal Services
13 6 (1.62%) Postfix
14 4 (1.08%) Veritas Cluster Server
15 3 (0.81%) Sendmail
15 3 (0.81%) Varnish
16 2 (0.54%) LXC
16 2 (0.54%) VirtualBox
Systems Management
1 119 (32.16%) Puppet
2 113 (30.54%) Opscode Chef
3 89 (24.05%) Ansible
4 41 (11.08%) Kubernetes
5 37 (10.00%) Terraform
6 31 (8.38%) Nagios
7 21 (5.68%) Salt
8 12 (3.24%) NetBackup
9 11 (2.97%) vCenter Server
10 9 (2.43%) Oracle ZFS
10 9 (2.43%) Red Hat Satellite
11 8 (2.16%) logstash
11 8 (2.16%) Rancher
11 8 (2.16%) WSUS
12 7 (1.89%) cPanel
12 7 (1.89%) FortiGate
12 7 (1.89%) Pingdom
13 6 (1.62%) CFEngine
13 6 (1.62%) Opsview
14 5 (1.35%) Prometheus
Vendors
1 205 (55.41%) Red Hat
2 115 (31.08%) VMware
3 78 (21.08%) Cisco
4 61 (16.49%) Microsoft
5 42 (11.35%) Oracle
6 27 (7.30%) Dell
7 22 (5.95%) Juniper
8 19 (5.14%) ServiceNow
9 18 (4.86%) HP
10 13 (3.51%) EqualLogic
10 13 (3.51%) Fortinet
10 13 (3.51%) Meraki
10 13 (3.51%) SaltStack
10 13 (3.51%) Talend
10 13 (3.51%) Zend
11 12 (3.24%) IBM
11 12 (3.24%) Veritas
12 11 (2.97%) New Relic
12 11 (2.97%) Rackspace
13 10 (2.70%) Splunk