Period
to 22 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 22 November 2017 with a comparison to the same period in the previous 2 years.

CentOS Linux
UK > England
6 months to
22 Nov 2017
Same period 2016 Same period 2015
Rank 387 393 430
Rank change year-on-year +6 +37 +15
Permanent jobs citing CentOS 1357 1393 1444
As % of all permanent IT jobs advertised in England 0.80% 0.78% 0.71%
As % of the Operating Systems category 3.25% 3.13% 2.69%
Number of salaries quoted 1172 1232 1323
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 £28,550
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 41763 44521 53635
As % of all permanent IT jobs advertised in England 24.68% 24.80% 26.43%
Number of salaries quoted 33850 38073 45708
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 22 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 22 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 -28 580 £60,000 +9.09% 59
South East +17 370 £45,000 -10.00% 27
North of England +22 180 £50,000 +25.00% 21
Yorkshire +62 92 £50,000 +14.29% 8
South West +19 90 £40,000 +3.23% 10
North West -27 82 £45,000 +15.38% 13
Midlands +25 80 £40,000 -16.67% 6
West Midlands +34 66 £36,500 -30.48% 4
East of England +22 59 £50,000 +3.63% 3
East Midlands +4 14 £42,500 +13.33% 2
North East +5 6 £35,000 -6.67%
CentOS
UK

For the 6 months to 22 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 1357 (100.00%) Linux
2 792 (58.36%) Red Hat
3 654 (48.19%) DevOps
4 591 (43.55%) Python
5 562 (41.41%) Puppet
6 512 (37.73%) Red Hat Enterprise Linux
7 488 (35.96%) Ubuntu
8 470 (34.64%) Bash Shell
9 469 (34.56%) Ansible
10 448 (33.01%) Amazon AWS
11 422 (31.10%) Windows
12 399 (29.40%) VMware
13 390 (28.74%) MySQL
14 381 (28.08%) Opscode Chef
15 351 (25.87%) Perl
16 347 (25.57%) Apache
17 301 (22.18%) Docker
18 298 (21.96%) Configuration Management
19 285 (21.00%) DNS
20 284 (20.93%) Nagios
21 272 (20.04%) Agile Software Development
22 268 (19.75%) Firewall
23 266 (19.60%) Jenkins
24 251 (18.50%) VMware Infrastructure
25 238 (17.54%) Git (software)
26 235 (17.32%) Java
27 233 (17.17%) Cisco
27 233 (17.17%) Open Source
28 228 (16.80%) Ruby
29 195 (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
1 347 (25.57%) Apache
2 167 (12.31%) nginx
3 162 (11.94%) Tomcat
4 72 (5.31%) OpenStack
5 62 (4.57%) IIS
6 61 (4.50%) Elasticsearch
7 58 (4.27%) Confluence
8 36 (2.65%) MS Exchange
9 28 (2.06%) SharePoint
10 16 (1.18%) Skype for Business
11 14 (1.03%) Cloud Foundry
11 14 (1.03%) JBoss
12 12 (0.88%) CMS
13 10 (0.74%) Exchange Server 2013
14 9 (0.66%) Jetty
15 7 (0.52%) Apache Solr
15 7 (0.52%) Zimbra
16 6 (0.44%) Apache Spark
16 6 (0.44%) Exchange Server 2003
16 6 (0.44%) WordPress
Applications
1 29 (2.14%) 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 (0.074%) Microsoft PowerPoint
5 1 (0.074%) Spreadsheet
Business Applications
1 7 (0.52%) Magento
2 4 (0.29%) MetaTrader
2 4 (0.29%) R3 Corda
3 3 (0.22%) Dynamics CRM
3 3 (0.22%) Dynamics NAV
3 3 (0.22%) Epicor Vantage
4 2 (0.15%) Payment Gateway
4 2 (0.15%) SAP Hybris
5 1 (0.074%) Oracle Applications
Cloud Services
1 448 (33.01%) Amazon AWS
2 163 (12.01%) Microsoft Azure
3 84 (6.19%) Amazon EC2
4 72 (5.31%) SaaS
5 64 (4.72%) AWS CloudFormation
6 43 (3.17%) Amazon S3
7 40 (2.95%) Google Cloud Platform
8 39 (2.87%) GitHub
9 36 (2.65%) Cloud Computing
10 32 (2.36%) Virtual Private Cloud
11 31 (2.28%) Office 365
12 26 (1.92%) Amazon CloudWatch
12 26 (1.92%) PaaS
13 24 (1.77%) Amazon ELB
13 24 (1.77%) AWS Lambda
13 24 (1.77%) Serverless
14 23 (1.69%) IaaS
15 22 (1.62%) Amazon ElastiCache
16 20 (1.47%) OpenShift
17 15 (1.11%) Route 53
Communications & Networking
1 285 (21.00%) DNS
2 268 (19.75%) Firewall
3 195 (14.37%) TCP/IP
4 130 (9.58%) SAN
5 117 (8.62%) VPN
6 100 (7.37%) DHCP
6 100 (7.37%) WAN
7 84 (6.19%) Internet
8 79 (5.82%) LAN
9 63 (4.64%) HTTP
10 55 (4.05%) VoIP
11 53 (3.91%) Network Security
12 47 (3.46%) LDAP
13 46 (3.39%) SMS
14 42 (3.10%) Cisco ASA
14 42 (3.10%) VLAN
15 36 (2.65%) OSPF
16 34 (2.51%) NAS
17 33 (2.43%) BGP
17 33 (2.43%) SSH
Database & Business Intelligence
1 390 (28.74%) MySQL
2 136 (10.02%) MongoDB
3 122 (8.99%) SQL Server
4 110 (8.11%) NoSQL
5 98 (7.22%) PostgreSQL
6 97 (7.15%) Redis
7 71 (5.23%) Big Data
8 60 (4.42%) Amazon RDS
9 47 (3.46%) Apache Cassandra
10 35 (2.58%) Hadoop
11 24 (1.77%) InfluxDB
11 24 (1.77%) MariaDB
12 13 (0.96%) Neo4j
12 13 (0.96%) Pentaho
12 13 (0.96%) Relational Database
13 12 (0.88%) SQL Server 2012
14 10 (0.74%) Amazon DynamoDB
14 10 (0.74%) SQLite
15 8 (0.59%) DB2
15 8 (0.59%) SQL Server 2008
Development Applications
1 266 (19.60%) Jenkins
2 238 (17.54%) Git (software)
3 79 (5.82%) TeamCity
4 72 (5.31%) JIRA
5 63 (4.64%) Atlassian Bamboo
6 60 (4.42%) Subversion
7 48 (3.54%) Vagrant
8 37 (2.73%) Eclipse
9 30 (2.21%) Team Foundation Server
10 27 (1.99%) Maven
11 26 (1.92%) Visual Studio Team System
12 24 (1.77%) Bitbucket
13 23 (1.69%) Hudson
14 22 (1.62%) Sonatype Nexus
15 20 (1.47%) JUnit
16 16 (1.18%) GitLab
17 15 (1.11%) Ant
18 13 (0.96%) Octopus Deploy
18 13 (0.96%) Talend Open Studio
19 12 (0.88%) EasyMock
General
1 153 (11.27%) Finance
2 91 (6.71%) Telecoms
3 82 (6.04%) Banking
4 55 (4.05%) Games
5 33 (2.43%) Billing
5 33 (2.43%) Marketing
6 17 (1.25%) Advertising
7 14 (1.03%) Manufacturing
8 13 (0.96%) Back Office
8 13 (0.96%) Retail
9 11 (0.81%) Law
10 9 (0.66%) Electronics
10 9 (0.66%) Financial Institution
10 9 (0.66%) Online Betting
11 5 (0.37%) Aerospace
11 5 (0.37%) Publishing
12 4 (0.29%) French Language
12 4 (0.29%) Front Office
12 4 (0.29%) Military
13 1 (0.074%) Investment Banking
Job Titles
1 389 (28.67%) DevOps Engineer
2 252 (18.57%) Administrator
3 241 (17.76%) Systems Administrator
4 221 (16.29%) Linux Engineer
5 195 (14.37%) Linux Administrator
6 190 (14.00%) Linux Systems Administrator
7 151 (11.13%) Linux/Unix DevOps
8 132 (9.73%) Systems Engineer
9 124 (9.14%) AWS Engineer
10 98 (7.22%) Linux DevOps Engineer
11 95 (7.00%) Developer
12 90 (6.63%) Cloud Engineer
13 87 (6.41%) Senior DevOps
14 86 (6.34%) Senior DevOps Engineer
15 83 (6.12%) AWS DevOps
16 82 (6.04%) Linux Systems Engineer
17 78 (5.75%) AWS DevOps Engineer
18 63 (4.64%) Infrastructure Engineer
19 48 (3.54%) Support Engineer
20 41 (3.02%) Analyst
Libraries, Frameworks & Software Standards
1 160 (11.79%) LAMP
2 102 (7.52%) LEMP Stack
3 97 (7.15%) Web Services
4 49 (3.61%) HTML
5 46 (3.39%) CSS
5 46 (3.39%) XML
6 45 (3.32%) Node.js
7 44 (3.24%) Elastic Stack
8 40 (2.95%) Kafka
9 39 (2.87%) RabbitMQ
10 34 (2.51%) RESTful
11 33 (2.43%) Spring
12 28 (2.06%) AngularJS
13 24 (1.77%) Symfony
14 22 (1.62%) SOAP
15 21 (1.55%) HTML5
16 19 (1.40%) ActiveMQ
17 18 (1.33%) LAPP Stack
18 17 (1.25%) JSON
19 16 (1.18%) REST
Miscellaneous
1 126 (9.29%) Data Centre
2 93 (6.85%) Computer Science
3 79 (5.82%) Analytical Skills
3 79 (5.82%) Public Cloud
4 54 (3.98%) Fintech
5 53 (3.91%) Linux Command Line
6 37 (2.73%) Greenfield Project
6 37 (2.73%) Private Cloud
7 32 (2.36%) Management Information System
8 30 (2.21%) BBC
9 28 (2.06%) Hybrid Cloud
9 28 (2.06%) Mobile Payment
10 25 (1.84%) Clustering
11 17 (1.25%) Cloud Native
11 17 (1.25%) Digital Media
12 16 (1.18%) Derivative
12 16 (1.18%) Enterprise Software
12 16 (1.18%) Hedge funds
12 16 (1.18%) Replication
13 14 (1.03%) PKI
Operating Systems
1 1357 (100.00%) Linux
2 512 (37.73%) Red Hat Enterprise Linux
3 488 (35.96%) Ubuntu
4 422 (31.10%) Windows
5 183 (13.49%) Unix
6 161 (11.86%) Debian
7 143 (10.54%) Windows Server
8 95 (7.00%) Windows Server 2012
9 84 (6.19%) Windows Server 2008
10 48 (3.54%) Solaris
11 42 (3.10%) Fedora
12 38 (2.80%) Windows 10
13 34 (2.51%) Windows 7
14 31 (2.28%) Mac OS X
15 30 (2.21%) AIX
15 30 (2.21%) SUSE
16 20 (1.47%) Oracle Linux
17 17 (1.25%) Amazon Linux
18 15 (1.11%) Mac OS
19 14 (1.03%) FreeBSD
Processes & Methodologies
1 654 (48.19%) DevOps
2 298 (21.96%) Configuration Management
3 272 (20.04%) Agile Software Development
4 233 (17.17%) Open Source
5 146 (10.76%) Continuous Integration
6 136 (10.02%) High Availability
7 134 (9.87%) ITIL
8 85 (6.26%) E-Commerce
9 79 (5.82%) Scrum
10 76 (5.60%) Software Engineering
11 63 (4.64%) Migration
12 60 (4.42%) Continuous Delivery
13 58 (4.27%) Load Balancing
13 58 (4.27%) Mentoring
13 58 (4.27%) Release Management
14 57 (4.20%) Task Automation
15 54 (3.98%) TDD
16 52 (3.83%) Continuous Improvement
16 52 (3.83%) Security Patching
17 51 (3.76%) Disaster Recovery
Programming Languages
1 591 (43.55%) Python
2 470 (34.64%) Bash Shell
3 351 (25.87%) Perl
4 235 (17.32%) Java
5 228 (16.80%) Ruby
6 195 (14.37%) PHP
7 113 (8.33%) SQL
8 92 (6.78%) JavaScript
9 89 (6.56%) PowerShell
10 79 (5.82%) Shell Script
11 70 (5.16%) C++
12 44 (3.24%) Go
13 41 (3.02%) C
14 36 (2.65%) Korn
15 29 (2.14%) Bourne shell
16 22 (1.62%) Lua
17 14 (1.03%) C-shell
17 14 (1.03%) Groovy
17 14 (1.03%) Jython
17 14 (1.03%) Scala
Qualifications
1 99 (7.30%) Degree
2 95 (7.00%) Security Cleared
3 67 (4.94%) SC Cleared
4 49 (3.61%) Microsoft Certification
5 47 (3.46%) AWS Certification
6 46 (3.39%) Cisco Certification
7 42 (3.10%) RHCE
8 39 (2.87%) RHCSA
9 38 (2.80%) CCNA
10 28 (2.06%) DV Cleared
10 28 (2.06%) MCSE
11 22 (1.62%) Computer Science Degree
11 22 (1.62%) VMware Certified Professional (VCP)
12 20 (1.47%) CCNP
13 17 (1.25%) RHCA
14 14 (1.03%) MCP
15 9 (0.66%) Linux+ Certification
16 8 (0.59%) ITIL Foundation Certificate
17 6 (0.44%) GIAC
17 6 (0.44%) MCSA
Quality Assurance & Compliance
1 33 (2.43%) SLA
2 24 (1.77%) PCI DSS
3 15 (1.11%) ISO/IEC 27001
4 14 (1.03%) QA
5 11 (0.81%) ISO 9001
6 6 (0.44%) 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
1 301 (22.18%) Docker
2 251 (18.50%) VMware Infrastructure
3 158 (11.64%) Active Directory
4 84 (6.19%) vSphere
5 71 (5.23%) VMware ESXi
6 66 (4.86%) NFS
7 62 (4.57%) Hyper-V
8 50 (3.68%) KVM
9 40 (2.95%) Virtual Machines
10 33 (2.43%) iptables
11 23 (1.69%) Samba
11 23 (1.69%) vCloud
12 22 (1.62%) Kamailio
13 19 (1.40%) Xen
13 19 (1.40%) XenServer
14 16 (1.18%) LXC
15 15 (1.11%) Terminal Services
16 14 (1.03%) Postfix
16 14 (1.03%) VMware Workstation
17 13 (0.96%) VirtualBox
Systems Management
1 562 (41.41%) Puppet
2 469 (34.56%) Ansible
3 381 (28.08%) Opscode Chef
4 284 (20.93%) Nagios
5 147 (10.83%) Kubernetes
6 146 (10.76%) Terraform
7 74 (5.45%) Salt
8 66 (4.86%) ZABBIX
9 51 (3.76%) Icinga
10 37 (2.73%) Grafana
11 34 (2.51%) Rundeck
12 29 (2.14%) Cacti
13 27 (1.99%) Kibana
13 27 (1.99%) logstash
13 27 (1.99%) SCCM
14 26 (1.92%) SELinux
14 26 (1.92%) vCenter Server
15 23 (1.69%) CFEngine
16 22 (1.62%) HAProxy
17 19 (1.40%) WSUS
Vendors
1 792 (58.36%) Red Hat
2 399 (29.40%) VMware
3 233 (17.17%) Cisco
4 169 (12.45%) Microsoft
5 102 (7.52%) HP
6 87 (6.41%) Oracle
7 78 (5.75%) Google
8 61 (4.50%) Splunk
9 53 (3.91%) SaltStack
10 51 (3.76%) Juniper
11 47 (3.46%) SolarWinds
12 43 (3.17%) Dell
13 38 (2.80%) Citrix
14 37 (2.73%) NetApp
15 31 (2.28%) Atlassian
16 30 (2.21%) ServiceNow
17 29 (2.14%) EMC
17 29 (2.14%) New Relic
18 27 (1.99%) CheckPoint
19 22 (1.62%) IBM