Period
to 29 March 2020

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 29 March 2020 with a comparison to the same period in the previous 2 years.

CentOS Linux
UK > England
6 months to
29 Mar 2020
Same period 2019 Same period 2018
Rank 467 408 422
Rank change year-on-year -59 +14 -13
Permanent jobs citing CentOS 605 1,019 1,159
As % of all permanent jobs advertised in England 0.55% 0.74% 0.70%
As % of the Operating Systems category 2.54% 3.16% 2.92%
Number of salaries quoted 525 895 1,071
Median annual salary £55,000 £55,000 £50,000
Median salary % change year-on-year - +10.00% -4.76%
10th Percentile £31,500 £32,500 £32,500
90th Percentile £82,500 £83,750 £76,250
UK median annual salary £52,500 £52,500 £50,000
% change year-on-year - +5.00% -

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 23,795 32,282 39,690
As % of all permanent IT jobs advertised in England 21.73% 23.31% 24.07%
Number of salaries quoted 19,250 25,936 32,864
Median annual salary £47,500 £47,500 £47,000
Median salary % change year-on-year - +1.06% +4.44%
10th Percentile £26,000 £26,000 £25,500
90th Percentile £80,000 £78,750 £76,250
UK median annual salary £47,000 £47,500 £45,000
% change year-on-year -1.05% +5.56% +3.45%

CentOS
Job Vacancy Trend in England

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

Job vacancy trend for CentOS in England

CentOS
Salary Trend in England

3-month moving average salary quoted in jobs citing CentOS in England.

Salary trend for CentOS in England

CentOS
Salary Histogram in England

Salary distribution for jobs citing CentOS in England over the 6 months to 29 March 2020.

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 29 March 2020. 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 -35 290 £60,000 - 39
South West +16 107 £50,000 +5.26% 23
South East -19 98 £50,000 -9.09% 37
North of England +43 58 £50,000 +25.00% 18
Midlands +27 34 £45,000 -5.26% 7
North West +27 33 £55,000 +22.22% 10
West Midlands +26 22 £53,750 +24.28% 4
East of England +10 19 £53,750 +34.38% 5
Yorkshire +41 17 £47,500 +58.33% 1
East Midlands +23 12 £35,000 -41.67% 3
North East +7 8 £32,000 -20.00% 7
CentOS
UK

For the 6 months to 29 March 2020, IT jobs citing CentOS also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads across the England region with a requirement for CentOS.

1 605 (100.00%) Linux
2 318 (52.56%) Python
3 286 (47.27%) Red Hat
4 284 (46.94%) DevOps
5 237 (39.17%) Docker
6 217 (35.87%) Ansible
7 216 (35.70%) Windows
8 213 (35.21%) AWS
9 185 (30.58%) Ubuntu
10 176 (29.09%) Jenkins
11 175 (28.93%) Agile Software Development
12 173 (28.60%) Bash Shell
12 173 (28.60%) Kubernetes
13 172 (28.43%) Red Hat Enterprise Linux
14 168 (27.77%) Git (software)
15 163 (26.94%) Puppet
16 153 (25.29%) SQL
17 141 (23.31%) VMware
18 128 (21.16%) Java
19 120 (19.83%) Azure
20 117 (19.34%) Finance
20 117 (19.34%) VMware Infrastructure
21 110 (18.18%) Security Cleared
22 107 (17.69%) JIRA
23 105 (17.36%) MySQL
23 105 (17.36%) Terraform
24 98 (16.20%) Configuration Management
25 95 (15.70%) Windows Server
25 95 (15.70%) Open Source
26 94 (15.54%) Apache

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 94 (15.54%) Apache
2 44 (7.27%) Tomcat
3 41 (6.78%) nginx
4 30 (4.96%) Confluence
5 24 (3.97%) OpenStack
6 18 (2.98%) WordPress
7 17 (2.81%) MS Exchange
8 14 (2.31%) SharePoint
9 13 (2.15%) Elasticsearch
9 13 (2.15%) IIS
10 8 (1.32%) GeoServer
11 6 (0.99%) SAS
12 5 (0.83%) Skype for Business
12 5 (0.83%) WebLogic
12 5 (0.83%) WebSphere
13 4 (0.66%) Cloud Foundry
13 4 (0.66%) CloudStack
14 3 (0.50%) Drupal
14 3 (0.50%) JBoss
14 3 (0.50%) SilverStripe
Applications
1 21 (3.47%) Microsoft Office
2 3 (0.50%) Microsoft Excel
3 1 (0.17%) Microsoft PowerPoint
Business Applications
1 3 (0.50%) Magento
2 2 (0.33%) Rolfe and Nolan
3 1 (0.17%) Dynamics CRM
Cloud Services
1 213 (35.21%) AWS
2 120 (19.83%) Azure
3 75 (12.40%) GCP
4 43 (7.11%) GitHub
5 39 (6.45%) SaaS
6 24 (3.97%) AWS CloudFormation
6 24 (3.97%) Slack
7 23 (3.80%) IaaS
8 22 (3.64%) Cloud Computing
9 19 (3.14%) Virtual Private Cloud
10 18 (2.98%) Amazon SQS
11 15 (2.48%) Office 365
11 15 (2.48%) PaaS
12 13 (2.15%) npm
13 11 (1.82%) Amazon EC2
13 11 (1.82%) Amazon EKS
13 11 (1.82%) Amazon S3
14 10 (1.65%) Amazon CloudWatch
14 10 (1.65%) AWS CodePipeline
15 7 (1.16%) Azure Stack
Communications & Networking
1 88 (14.55%) TCP/IP
2 82 (13.55%) Firewall
3 75 (12.40%) DNS
4 38 (6.28%) HTTP
5 36 (5.95%) VPN
6 31 (5.12%) DHCP
7 25 (4.13%) LAN
8 23 (3.80%) SAN
8 23 (3.80%) WAN
9 21 (3.47%) SMTP
10 19 (3.14%) VLAN
11 17 (2.81%) DMZ
12 16 (2.64%) WLAN
13 15 (2.48%) SNMP
13 15 (2.48%) Wireless
14 14 (2.31%) Network Security
15 13 (2.15%) OSPF
16 12 (1.98%) IGMP
16 12 (1.98%) Multicast
16 12 (1.98%) SSL
Database & Business Intelligence
1 105 (17.36%) MySQL
2 63 (10.41%) PostgreSQL
3 43 (7.11%) Redis
4 42 (6.94%) NoSQL
5 34 (5.62%) SQL Server
6 33 (5.45%) Big Data
6 33 (5.45%) MariaDB
7 24 (3.97%) Amazon RDS
8 21 (3.47%) InfluxDB
8 21 (3.47%) Relational Database
9 15 (2.48%) RDBMS
10 14 (2.31%) Hadoop
11 10 (1.65%) MongoDB
12 7 (1.16%) Azure SQL Database
13 4 (0.66%) Amazon DynamoDB
14 3 (0.50%) Apache Cassandra
14 3 (0.50%) Ingres
14 3 (0.50%) SQL Server 2008
14 3 (0.50%) SQL Server 2012
14 3 (0.50%) SQL Server 2014
Development Applications
1 176 (29.09%) Jenkins
2 168 (27.77%) Git (software)
3 107 (17.69%) JIRA
4 58 (9.59%) GitLab
5 47 (7.77%) Atlassian Bamboo
6 37 (6.12%) Bitbucket
7 26 (4.30%) Artifactory
8 22 (3.64%) Subversion
9 18 (2.98%) Visual Studio
10 14 (2.31%) JUnit
10 14 (2.31%) Selenium
11 12 (1.98%) Sonatype Nexus
11 12 (1.98%) Vagrant
12 11 (1.82%) Maven
13 10 (1.65%) NetBeans
14 8 (1.32%) Bitbucket Server
14 8 (1.32%) Eclipse
14 8 (1.32%) TeamCity
14 8 (1.32%) TestRail
15 7 (1.16%) CircleCI
General
1 117 (19.34%) Finance
2 39 (6.45%) Public Sector
3 28 (4.63%) Telecoms
4 25 (4.13%) Financial Institution
5 22 (3.64%) Back Office
6 21 (3.47%) Legal
6 21 (3.47%) Retail
7 18 (2.98%) Marketing
8 13 (2.15%) Automotive
8 13 (2.15%) Electronics
9 12 (1.98%) Manufacturing
10 7 (1.16%) Games
11 6 (0.99%) Banking
12 5 (0.83%) Billing
13 3 (0.50%) Advertising
13 3 (0.50%) iGaming
13 3 (0.50%) Law
14 2 (0.33%) Pharmaceutical
14 2 (0.33%) Publishing
Job Titles
1 121 (20.00%) DevOps Engineer
2 105 (17.36%) Developer
3 72 (11.90%) Infrastructure Engineer
4 71 (11.74%) Linux Engineer
5 61 (10.08%) Administrator
5 61 (10.08%) Systems Administrator
6 50 (8.26%) Java Developer
7 44 (7.27%) Support Engineer
8 43 (7.11%) Linux Administrator
8 43 (7.11%) Linux Systems Administrator
9 40 (6.61%) Systems Engineer
10 39 (6.45%) Platform Engineer
11 36 (5.95%) Senior Developer
12 34 (5.62%) AWS Engineer
13 32 (5.29%) Senior DevOps
14 30 (4.96%) AWS DevOps
14 30 (4.96%) IT Engineer
14 30 (4.96%) Kubernetes Engineer
14 30 (4.96%) Senior Java Developer
14 30 (4.96%) Software Developer
Libraries, Frameworks & Software Standards
1 73 (12.07%) HTML
2 69 (11.40%) Elastic Stack
3 64 (10.58%) Spring
4 63 (10.41%) LAMP
5 59 (9.75%) HTML5
6 51 (8.43%) CSS
7 47 (7.77%) Web Services
8 46 (7.60%) RabbitMQ
9 40 (6.61%) XML
10 36 (5.95%) REST
11 32 (5.29%) Node.js
12 30 (4.96%) LDAP
12 30 (4.96%) RESTful
13 27 (4.46%) Kafka
14 26 (4.30%) JSON
15 24 (3.97%) SOAP
16 23 (3.80%) J2EE
16 23 (3.80%) Spring Boot
17 21 (3.47%) AngularJS
17 21 (3.47%) Redux
Miscellaneous
1 72 (11.90%) Public Cloud
2 56 (9.26%) Data Centre
3 48 (7.93%) Analytical Skills
4 27 (4.46%) Linux Command Line
5 22 (3.64%) Greenfield Project
5 22 (3.64%) Self-Motivation
6 19 (3.14%) Management Information System
6 19 (3.14%) Replication
7 16 (2.64%) Clustering
7 16 (2.64%) Enterprise Storage
7 16 (2.64%) Mobile App
8 15 (2.48%) User Experience
9 13 (2.15%) Cloud Native
10 11 (1.82%) Derivative
10 11 (1.82%) Video\Live Streaming
10 11 (1.82%) Wiki
11 10 (1.65%) IPTV
11 10 (1.65%) Reinsurance
12 9 (1.49%) MPEG
13 8 (1.32%) Driving Licence
Operating Systems
1 605 (100.00%) Linux
2 216 (35.70%) Windows
3 185 (30.58%) Ubuntu
4 172 (28.43%) Red Hat Enterprise Linux
5 95 (15.70%) Windows Server
6 62 (10.25%) Unix
7 61 (10.08%) Debian
8 49 (8.10%) Windows Server 2012
9 38 (6.28%) Fedora
9 38 (6.28%) Windows Server 2016
10 27 (4.46%) Windows Server 2008
11 24 (3.97%) Windows 7
12 22 (3.64%) Solaris
13 21 (3.47%) Android
13 21 (3.47%) Apple iOS
13 21 (3.47%) Windows Server 2019
14 15 (2.48%) FreeBSD
15 14 (2.31%) Windows 10
16 12 (1.98%) SUSE
17 8 (1.32%) Windows Server 2003
Processes & Methodologies
1 284 (46.94%) DevOps
2 175 (28.93%) Agile Software Development
3 98 (16.20%) Configuration Management
4 95 (15.70%) Open Source
5 93 (15.37%) Continuous Integration
6 83 (13.72%) Infrastructure Engineering
7 68 (11.24%) ITIL
8 65 (10.74%) Software Engineering
8 65 (10.74%) Test Automation
9 59 (9.75%) Mentoring
9 59 (9.75%) Microservices
10 56 (9.26%) Scrum
11 54 (8.93%) Fintech
12 49 (8.10%) Problem-Solving
13 48 (7.93%) High Availability
14 41 (6.78%) Infrastructure as Code
14 41 (6.78%) Migration
15 38 (6.28%) Load Balancing
16 35 (5.79%) Computer Science
16 35 (5.79%) Root Cause Analysis
Programming Languages
1 318 (52.56%) Python
2 173 (28.60%) Bash Shell
3 153 (25.29%) SQL
4 128 (21.16%) Java
5 82 (13.55%) Ruby
6 70 (11.57%) Perl
7 66 (10.91%) JavaScript
8 65 (10.74%) PHP
9 60 (9.92%) PowerShell
10 54 (8.93%) Shell Script
11 52 (8.60%) C
12 46 (7.60%) C#
13 39 (6.45%) C++
14 35 (5.79%) Go
15 21 (3.47%) PL/SQL
16 20 (3.31%) Korn
17 19 (3.14%) Java 8
17 19 (3.14%) Scala
18 15 (2.48%) XQuery
19 10 (1.65%) T-SQL
Qualifications
1 110 (18.18%) Security Cleared
2 72 (11.90%) Degree
3 56 (9.26%) SC Cleared
4 55 (9.09%) DV Cleared
5 38 (6.28%) Microsoft Certification
6 36 (5.95%) MCSE
7 29 (4.79%) Computer Science Degree
8 28 (4.63%) Cisco Certification
9 21 (3.47%) CCNA
10 19 (3.14%) MCSA
11 18 (2.98%) RHCE
12 16 (2.64%) CISSP
12 16 (2.64%) CompTIA Security+
12 16 (2.64%) GIAC
12 16 (2.64%) Linux+ Certification
12 16 (2.64%) Network+ Certification
12 16 (2.64%) SANS
12 16 (2.64%) SSCP
13 15 (2.48%) ISTQB
14 11 (1.82%) Numerate Degree
Quality Assurance & Compliance
1 18 (2.98%) QA
2 12 (1.98%) SLA
3 11 (1.82%) ISO/IEC 27001
4 7 (1.16%) PCI DSS
5 4 (0.66%) GDPR
6 3 (0.50%) ISO 9001
7 1 (0.17%) ISO/IEC 20000
7 1 (0.17%) JTAG
System Software
1 237 (39.17%) Docker
2 117 (19.34%) VMware Infrastructure
3 71 (11.74%) Active Directory
4 40 (6.61%) VMware ESXi
5 32 (5.29%) KVM
5 32 (5.29%) NFS
6 28 (4.63%) Samba
7 26 (4.30%) vSphere
8 25 (4.13%) VirtualBox
9 21 (3.47%) Xen
10 20 (3.31%) Virtual Machines
11 19 (3.14%) Apache ZooKeeper
12 18 (2.98%) Hyper-V
13 16 (2.64%) Virtual Servers
14 9 (1.49%) XenApp
15 7 (1.16%) Squid
16 6 (0.99%) Kamailio
17 5 (0.83%) iptables
18 4 (0.66%) OpenSSH
19 3 (0.50%) Firmware
Systems Management
1 217 (35.87%) Ansible
2 173 (28.60%) Kubernetes
3 163 (26.94%) Puppet
4 105 (17.36%) Terraform
5 63 (10.41%) Grafana
6 62 (10.25%) Nagios
7 52 (8.60%) Opscode Chef
7 52 (8.60%) Packer
8 47 (7.77%) ZABBIX
9 44 (7.27%) Docker Swarm
10 33 (5.45%) Prometheus
11 30 (4.96%) Graphite
11 30 (4.96%) vCenter Server
12 28 (4.63%) Consul
13 24 (3.97%) SCCM
14 21 (3.47%) HAProxy
15 19 (3.14%) WSUS
16 17 (2.81%) OpenNMS
17 16 (2.64%) yum
18 14 (2.31%) cPanel
Vendors
1 286 (47.27%) Red Hat
2 141 (23.31%) VMware
3 75 (12.40%) Microsoft
4 62 (10.25%) Oracle
5 49 (8.10%) Atlassian
6 44 (7.27%) Cisco
7 33 (5.45%) Google
8 26 (4.30%) Dell
9 21 (3.47%) HP
10 19 (3.14%) SolarWinds
11 18 (2.98%) EMC
12 16 (2.64%) Cloudera
12 16 (2.64%) Hortonworks
12 16 (2.64%) NetApp
13 15 (2.48%) Citrix
14 14 (2.31%) SaltStack
15 13 (2.15%) SAP
16 10 (1.65%) Palo Alto
16 10 (1.65%) Sybase
17 7 (1.16%) Juniper