Period
to 17 November 2017

The following table provides summary statistics for permanent job vacancies advertised in England 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 17 November 2017 with a comparison to the same period in the previous 2 years.

CentOS Linux
UK > England
6 months to
17 Nov 2017
Same period 2016 Same period 2015
Rank 378 397 427
Rank change year-on-year +19 +30 +17
Permanent jobs citing CentOS 1364 1390 1454
As % of all permanent IT jobs advertised in England 0.81% 0.77% 0.70%
As % of the Operating Systems category 3.27% 3.12% 2.67%
Number of salaries quoted 1174 1234 1345
England median annual salary £50,000 £50,000 £47,500
Median salary % change year-on-year - +5.26% +5.56%
10th Percentile £32,500 £32,000 £28,500
90th Percentile £80,000 £71,250 £67,500
UK 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 England with a requirement for operating system skills.

All Operating Systems
England
Permanent vacancies with a requirement for operating system skills 41701 44538 54550
As % of all permanent IT jobs advertised in England 24.69% 24.82% 26.44%
Number of salaries quoted 33794 38054 46499
England median annual salary £45,000 £45,000 £45,000
10th Percentile £25,000 £25,000 £24,750
90th Percentile £75,000 £72,500 £72,500
UK median annual salary £45,000 £45,000 £43,500
% change year-on-year - +3.45% +3.57%

CentOS
Job Vacancy Trend in England

Job postings citing CentOS as a percentage of all IT jobs advertised in England.

Job vacancy trend for CentOS in England

CentOS
Salary Trend in England

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

Salary trend for CentOS in England

CentOS
Salary Histogram in England

The salary distribution of IT jobs citing CentOS in England over the 6 months to 17 November 2017.

Salary histogram for CentOS in England

CentOS
Job Locations in England

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the England region over the 6 months to 17 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
London -27 590 £60,000 +9.09% 36
South East +27 373 £45,000 -10.00% 15
North of England +23 176 £50,000 +25.00% 16
South West +20 91 £40,000 +3.23% 6
Yorkshire +65 90 £50,000 +17.65% 5
North West -12 80 £45,000 +12.50% 11
Midlands +39 78 £37,500 -21.88% 6
West Midlands +45 66 £36,500 -28.78% 3
East of England +14 57 £50,000 +5.26% 4
East Midlands -2 12 £42,500 - 3
North East +10 6 £35,000 -12.50%
CentOS
UK

For the 6 months to 17 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 England region with a requirement for CentOS.

1 1364 (100.00%) Linux
2 799 (58.58%) Red Hat
3 650 (47.65%) DevOps
4 596 (43.70%) Python
5 568 (41.64%) Puppet
6 514 (37.68%) Red Hat Enterprise Linux
7 479 (35.12%) Ubuntu
8 467 (34.24%) Ansible
9 465 (34.09%) Bash Shell
10 444 (32.55%) Amazon AWS
11 432 (31.67%) Windows
12 404 (29.62%) VMware
13 386 (28.30%) MySQL
14 379 (27.79%) Opscode Chef
15 355 (26.03%) Perl
16 354 (25.95%) Apache
17 304 (22.29%) Docker
18 293 (21.48%) Configuration Management
19 291 (21.33%) Nagios
20 287 (21.04%) DNS
21 270 (19.79%) Firewall
21 270 (19.79%) Agile Software Development
22 269 (19.72%) Jenkins
23 251 (18.40%) VMware Infrastructure
24 240 (17.60%) Java
25 239 (17.52%) Git (software)
26 237 (17.38%) Cisco
27 231 (16.94%) Open Source
28 228 (16.72%) Ruby
29 196 (14.37%) TCP/IP

CentOS
Co-occurring IT Skills in England 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
1 354 (25.95%) Apache
2 169 (12.39%) nginx
3 167 (12.24%) Tomcat
4 72 (5.28%) OpenStack
5 64 (4.69%) IIS
6 62 (4.55%) Elasticsearch
7 57 (4.18%) Confluence
8 34 (2.49%) MS Exchange
9 27 (1.98%) SharePoint
10 16 (1.17%) Skype for Business
11 15 (1.10%) JBoss
12 14 (1.03%) Cloud Foundry
13 13 (0.95%) CMS
14 9 (0.66%) Exchange Server 2013
14 9 (0.66%) Jetty
15 8 (0.59%) Apache Spark
16 7 (0.51%) Apache Solr
16 7 (0.51%) Zimbra
17 6 (0.44%) WordPress
18 5 (0.37%) WebSphere
Applications
1 31 (2.27%) Microsoft Office
2 6 (0.44%) Houdini
2 6 (0.44%) Maya
2 6 (0.44%) NUKE
2 6 (0.44%) Photoshop
3 3 (0.22%) SOLIDWORKS
4 2 (0.15%) Microsoft Excel
5 1 (0.073%) Microsoft PowerPoint
5 1 (0.073%) Spreadsheet
Business Applications
1 8 (0.59%) Magento
2 4 (0.29%) MetaTrader
2 4 (0.29%) R3 Corda
3 3 (0.22%) Epicor Vantage
4 2 (0.15%) Dynamics CRM
4 2 (0.15%) Dynamics NAV
4 2 (0.15%) Payment Gateway
4 2 (0.15%) SAP Hybris
5 1 (0.073%) Oracle Applications
Cloud Services
1 444 (32.55%) Amazon AWS
2 159 (11.66%) Microsoft Azure
3 86 (6.30%) Amazon EC2
4 69 (5.06%) SaaS
5 64 (4.69%) AWS CloudFormation
6 42 (3.08%) Amazon S3
7 39 (2.86%) GitHub
7 39 (2.86%) Google Cloud Platform
8 35 (2.57%) Cloud Computing
9 33 (2.42%) Virtual Private Cloud
10 32 (2.35%) Office 365
11 27 (1.98%) PaaS
12 25 (1.83%) Amazon CloudWatch
12 25 (1.83%) AWS Lambda
12 25 (1.83%) Serverless
13 24 (1.76%) Amazon ELB
14 23 (1.69%) IaaS
15 22 (1.61%) Amazon ElastiCache
16 20 (1.47%) OpenShift
17 16 (1.17%) Route 53
Communications & Networking
1 287 (21.04%) DNS
2 270 (19.79%) Firewall
3 196 (14.37%) TCP/IP
4 138 (10.12%) SAN
5 122 (8.94%) VPN
6 101 (7.40%) WAN
7 99 (7.26%) DHCP
8 85 (6.23%) Internet
9 80 (5.87%) LAN
10 63 (4.62%) HTTP
11 54 (3.96%) Network Security
12 53 (3.89%) VoIP
13 46 (3.37%) SMS
14 45 (3.30%) LDAP
15 42 (3.08%) VLAN
16 39 (2.86%) Cisco ASA
17 37 (2.71%) OSPF
18 36 (2.64%) NAS
19 34 (2.49%) BGP
20 33 (2.42%) SSL
Database & Business Intelligence
1 386 (28.30%) MySQL
2 132 (9.68%) MongoDB
3 120 (8.80%) SQL Server
4 108 (7.92%) NoSQL
5 97 (7.11%) Redis
6 93 (6.82%) PostgreSQL
7 73 (5.35%) Big Data
8 61 (4.47%) Amazon RDS
9 53 (3.89%) Apache Cassandra
10 37 (2.71%) Hadoop
11 25 (1.83%) MariaDB
12 22 (1.61%) InfluxDB
13 13 (0.95%) Neo4j
13 13 (0.95%) Pentaho
14 12 (0.88%) Relational Database
14 12 (0.88%) SQL Server 2012
14 12 (0.88%) SQLite
15 10 (0.73%) Amazon DynamoDB
16 8 (0.59%) DB2
16 8 (0.59%) SQL Server 2008
Development Applications
1 269 (19.72%) Jenkins
2 239 (17.52%) Git (software)
3 79 (5.79%) TeamCity
4 71 (5.21%) JIRA
5 62 (4.55%) Atlassian Bamboo
6 59 (4.33%) Subversion
7 46 (3.37%) Vagrant
8 37 (2.71%) Eclipse
9 31 (2.27%) Team Foundation Server
10 27 (1.98%) Visual Studio Team System
11 26 (1.91%) Maven
12 25 (1.83%) Bitbucket
13 23 (1.69%) Hudson
14 21 (1.54%) Sonatype Nexus
15 20 (1.47%) JUnit
16 15 (1.10%) Ant
16 15 (1.10%) GitLab
17 14 (1.03%) Octopus Deploy
18 13 (0.95%) Talend Open Studio
19 12 (0.88%) EasyMock
General
1 151 (11.07%) Finance
2 92 (6.74%) Telecoms
3 82 (6.01%) Banking
4 55 (4.03%) Games
5 34 (2.49%) Marketing
6 33 (2.42%) Billing
7 17 (1.25%) Advertising
8 15 (1.10%) Retail
9 14 (1.03%) Manufacturing
10 13 (0.95%) Back Office
11 11 (0.81%) Law
12 10 (0.73%) Online Betting
13 9 (0.66%) Electronics
13 9 (0.66%) Financial Institution
14 6 (0.44%) Publishing
15 5 (0.37%) Aerospace
16 4 (0.29%) French Language
16 4 (0.29%) Front Office
16 4 (0.29%) Military
17 1 (0.073%) Music Industry
Job Titles
1 392 (28.74%) DevOps Engineer
2 255 (18.70%) Administrator
3 240 (17.60%) Systems Administrator
4 219 (16.06%) Linux Engineer
5 196 (14.37%) Linux Administrator
6 188 (13.78%) Linux Systems Administrator
7 152 (11.14%) Linux/Unix DevOps
8 130 (9.53%) Systems Engineer
9 124 (9.09%) AWS Engineer
10 97 (7.11%) Developer
10 97 (7.11%) Linux DevOps Engineer
11 91 (6.67%) Cloud Engineer
12 86 (6.30%) Senior DevOps
13 85 (6.23%) Senior DevOps Engineer
14 82 (6.01%) AWS DevOps
15 81 (5.94%) Linux Systems Engineer
16 77 (5.65%) AWS DevOps Engineer
17 63 (4.62%) Infrastructure Engineer
18 48 (3.52%) Support Engineer
19 44 (3.23%) Analyst
Libraries, Frameworks & Software Standards
1 159 (11.66%) LAMP
2 105 (7.70%) LEMP Stack
3 96 (7.04%) Web Services
4 50 (3.67%) HTML
5 47 (3.45%) XML
6 46 (3.37%) CSS
7 42 (3.08%) Elastic Stack
7 42 (3.08%) Kafka
7 42 (3.08%) Node.js
8 37 (2.71%) RabbitMQ
9 34 (2.49%) RESTful
10 33 (2.42%) Spring
11 29 (2.13%) AngularJS
12 22 (1.61%) SOAP
12 22 (1.61%) Symfony
13 21 (1.54%) ActiveMQ
13 21 (1.54%) HTML5
14 19 (1.39%) JSON
15 17 (1.25%) LAPP Stack
15 17 (1.25%) Sensu
Miscellaneous
1 130 (9.53%) Data Centre
2 95 (6.96%) Computer Science
3 79 (5.79%) Public Cloud
4 75 (5.50%) Analytical Skills
5 52 (3.81%) Fintech
6 50 (3.67%) Linux Command Line
7 37 (2.71%) Greenfield Project
7 37 (2.71%) Private Cloud
8 33 (2.42%) Management Information System
9 30 (2.20%) BBC
10 29 (2.13%) Hybrid Cloud
11 28 (2.05%) Mobile Payment
12 26 (1.91%) Clustering
13 17 (1.25%) Cloud Native
13 17 (1.25%) Enterprise Software
14 16 (1.17%) Replication
15 15 (1.10%) Derivative
15 15 (1.10%) Digital Media
15 15 (1.10%) Hedge funds
15 15 (1.10%) PKI
Operating Systems
1 1364 (100.00%) Linux
2 514 (37.68%) Red Hat Enterprise Linux
3 479 (35.12%) Ubuntu
4 432 (31.67%) Windows
5 181 (13.27%) Unix
6 163 (11.95%) Debian
7 144 (10.56%) Windows Server
8 99 (7.26%) Windows Server 2012
9 89 (6.52%) Windows Server 2008
10 48 (3.52%) Solaris
11 43 (3.15%) Fedora
12 35 (2.57%) Windows 10
13 34 (2.49%) Windows 7
14 31 (2.27%) AIX
14 31 (2.27%) Mac OS X
15 29 (2.13%) SUSE
16 20 (1.47%) Oracle Linux
17 17 (1.25%) Amazon Linux
18 15 (1.10%) Mac OS
19 13 (0.95%) FreeBSD
Processes & Methodologies
1 650 (47.65%) DevOps
2 293 (21.48%) Configuration Management
3 270 (19.79%) Agile Software Development
4 231 (16.94%) Open Source
5 144 (10.56%) Continuous Integration
6 136 (9.97%) High Availability
7 134 (9.82%) ITIL
8 87 (6.38%) E-Commerce
9 82 (6.01%) Scrum
10 73 (5.35%) Software Engineering
11 63 (4.62%) Migration
12 62 (4.55%) Continuous Delivery
13 61 (4.47%) Load Balancing
14 60 (4.40%) Task Automation
15 59 (4.33%) Continuous Improvement
16 58 (4.25%) Release Management
17 57 (4.18%) Mentoring
18 55 (4.03%) TDD
19 54 (3.96%) Security Patching
20 50 (3.67%) Disaster Recovery
Programming Languages
1 596 (43.70%) Python
2 465 (34.09%) Bash Shell
3 355 (26.03%) Perl
4 240 (17.60%) Java
5 228 (16.72%) Ruby
6 192 (14.08%) PHP
7 113 (8.28%) SQL
8 95 (6.96%) JavaScript
9 88 (6.45%) PowerShell
10 78 (5.72%) Shell Script
11 71 (5.21%) C++
12 47 (3.45%) Go
13 41 (3.01%) C
14 37 (2.71%) Korn
15 29 (2.13%) Bourne shell
16 21 (1.54%) Lua
17 14 (1.03%) C-shell
17 14 (1.03%) Groovy
17 14 (1.03%) Jython
17 14 (1.03%) Scala
Qualifications
1 96 (7.04%) Security Cleared
2 94 (6.89%) Degree
3 68 (4.99%) SC Cleared
4 49 (3.59%) Microsoft Certification
5 46 (3.37%) AWS Certification
5 46 (3.37%) Cisco Certification
6 42 (3.08%) RHCE
7 38 (2.79%) CCNA
7 38 (2.79%) RHCSA
8 27 (1.98%) DV Cleared
8 27 (1.98%) MCSE
9 23 (1.69%) VMware Certified Professional (VCP)
10 22 (1.61%) Computer Science Degree
11 20 (1.47%) CCNP
12 17 (1.25%) RHCA
13 15 (1.10%) MCP
14 9 (0.66%) Linux+ Certification
15 8 (0.59%) ITIL Foundation Certificate
16 6 (0.44%) GIAC
16 6 (0.44%) MCSA
Quality Assurance & Compliance
1 35 (2.57%) SLA
2 24 (1.76%) PCI DSS
3 16 (1.17%) ISO/IEC 27001
4 14 (1.03%) QA
5 11 (0.81%) ISO 9001
6 5 (0.37%) GCP
7 4 (0.29%) Sarbanes-Oxley
8 2 (0.15%) GDPR
8 2 (0.15%) PMO
8 2 (0.15%) SSAE 16
System Software
1 304 (22.29%) Docker
2 251 (18.40%) VMware Infrastructure
3 164 (12.02%) Active Directory
4 83 (6.09%) vSphere
5 71 (5.21%) VMware ESXi
6 64 (4.69%) NFS
7 61 (4.47%) Hyper-V
8 54 (3.96%) KVM
9 40 (2.93%) Virtual Machines
10 34 (2.49%) iptables
11 23 (1.69%) vCloud
12 22 (1.61%) Samba
12 22 (1.61%) XenServer
13 21 (1.54%) Kamailio
14 19 (1.39%) Xen
15 16 (1.17%) LXC
16 15 (1.10%) Terminal Services
17 14 (1.03%) Postfix
17 14 (1.03%) VMware Workstation
18 12 (0.88%) VirtualBox
Systems Management
1 568 (41.64%) Puppet
2 467 (34.24%) Ansible
3 379 (27.79%) Opscode Chef
4 291 (21.33%) Nagios
5 147 (10.78%) Kubernetes
6 145 (10.63%) Terraform
7 70 (5.13%) Salt
8 66 (4.84%) ZABBIX
9 49 (3.59%) Icinga
10 36 (2.64%) Grafana
10 36 (2.64%) Rundeck
11 31 (2.27%) logstash
12 29 (2.13%) vCenter Server
13 28 (2.05%) Cacti
13 28 (2.05%) Kibana
14 27 (1.98%) SELinux
15 26 (1.91%) SCCM
16 23 (1.69%) CFEngine
17 20 (1.47%) HAProxy
17 20 (1.47%) WSUS
Vendors
1 799 (58.58%) Red Hat
2 404 (29.62%) VMware
3 237 (17.38%) Cisco
4 173 (12.68%) Microsoft
5 101 (7.40%) HP
6 86 (6.30%) Oracle
7 75 (5.50%) Google
8 65 (4.77%) Splunk
9 54 (3.96%) Juniper
10 52 (3.81%) SaltStack
11 46 (3.37%) SolarWinds
12 45 (3.30%) Dell
13 40 (2.93%) Citrix
14 35 (2.57%) NetApp
15 31 (2.27%) Atlassian
16 30 (2.20%) ServiceNow
17 29 (2.13%) New Relic
18 28 (2.05%) EMC
19 25 (1.83%) CheckPoint
20 23 (1.69%) IBM