Period
to 27 January 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 27 January 2020 with a comparison to the same period in the previous 2 years.

CentOS Linux
UK > England
6 months to
27 Jan 2020
Same period 2019 Same period 2018
Rank 483 409 416
Rank change year-on-year -74 +7 -18
Permanent jobs citing CentOS 636 1,040 1,212
As % of all permanent IT jobs advertised in England 0.55% 0.75% 0.75%
As % of the Operating Systems category 2.45% 3.20% 3.07%
Number of salaries quoted 520 862 1,068
England median annual salary £55,000 £55,000 £50,000
Median salary % change year-on-year - +10.00% -
10th Percentile £31,500 £30,000 £32,500
90th Percentile £80,125 £81,250 £75,375
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 25,978 32,502 39,501
As % of all permanent IT jobs advertised in England 22.51% 23.33% 24.36%
Number of salaries quoted 20,974 26,183 32,578
England median annual salary £46,000 £47,500 £45,000
Median salary % change year-on-year -3.16% +5.56% -
10th Percentile £25,000 £25,750 £25,000
90th Percentile £80,000 £80,000 £75,000
UK median annual salary £45,000 £47,500 £45,000
% change year-on-year -5.26% +5.56% +2.27%

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 27 January 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 27 January 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 -71 283 £60,000 +4.35% 45
South West +47 124 £50,000 - 29
South East -63 93 £50,000 -4.76% 53
North of England +5 59 £50,000 +25.00% 26
Midlands +13 44 £45,000 -18.18% 10
North West +26 40 £52,500 +16.67% 17
West Midlands +44 34 £50,000 +81.82% 6
East of England +27 33 £47,500 +11.76% 8
Yorkshire +1 14 £36,000 +20.00% 3
East Midlands +1 10 £40,000 -38.46% 4
North East +8 5 £37,500 -6.25% 6
CentOS
UK

For the 6 months to 27 January 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.

1 636 (100.00%) Linux
2 342 (53.77%) Python
3 326 (51.26%) Red Hat
4 314 (49.37%) DevOps
5 260 (40.88%) Docker
6 243 (38.21%) Ansible
7 220 (34.59%) Puppet
8 219 (34.43%) Jenkins
9 218 (34.28%) AWS
9 218 (34.28%) Windows
10 202 (31.76%) Bash Shell
11 201 (31.60%) Ubuntu
12 195 (30.66%) Red Hat Enterprise Linux
13 191 (30.03%) Agile Software Development
14 189 (29.72%) Git (software)
14 189 (29.72%) Kubernetes
15 143 (22.48%) Java
16 139 (21.86%) SQL
16 139 (21.86%) Azure
17 138 (21.70%) VMware
18 120 (18.87%) TCP/IP
19 119 (18.71%) Terraform
20 113 (17.77%) Apache
21 112 (17.61%) MySQL
22 111 (17.45%) JIRA
23 107 (16.82%) VMware Infrastructure
24 106 (16.67%) Continuous Integration
25 104 (16.35%) Configuration Management
26 102 (16.04%) Open Source
27 100 (15.72%) Firewall

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
1 113 (17.77%) Apache
2 66 (10.38%) nginx
3 53 (8.33%) Tomcat
4 35 (5.50%) Confluence
5 31 (4.87%) IIS
5 31 (4.87%) MS Exchange
6 27 (4.25%) Elasticsearch
7 21 (3.30%) OpenStack
8 20 (3.14%) SharePoint
9 12 (1.89%) WordPress
10 11 (1.73%) GeoServer
11 7 (1.10%) Exchange Server 2010
12 5 (0.79%) WebSphere
13 4 (0.63%) Exchange Server 2013
13 4 (0.63%) WebLogic
14 2 (0.31%) JBoss
15 1 (0.16%) CMS
15 1 (0.16%) SAS
15 1 (0.16%) Skype for Business
Applications
1 28 (4.40%) Microsoft Office
2 5 (0.79%) Microsoft Excel
3 4 (0.63%) Microsoft PowerPoint
Business Applications
1 1 (0.16%) Dynamics CRM
1 1 (0.16%) Sage 200
Cloud Services
1 218 (34.28%) AWS
2 139 (21.86%) Azure
3 99 (15.57%) GCP
4 42 (6.60%) GitHub
5 39 (6.13%) SaaS
6 26 (4.09%) Office 365
7 25 (3.93%) AWS CloudFormation
8 23 (3.62%) Slack
9 21 (3.30%) Cloud Computing
10 20 (3.14%) IaaS
11 19 (2.99%) Amazon SQS
12 18 (2.83%) Virtual Private Cloud
13 17 (2.67%) Amazon EKS
14 13 (2.04%) AWS CodePipeline
15 12 (1.89%) PaaS
16 11 (1.73%) Amazon ECS
16 11 (1.73%) npm
17 10 (1.57%) Amazon S3
17 10 (1.57%) Serverless
18 9 (1.42%) Amazon CloudWatch
Communications & Networking
1 120 (18.87%) TCP/IP
2 100 (15.72%) Firewall
3 76 (11.95%) DNS
4 51 (8.02%) VPN
5 43 (6.76%) HTTP
6 36 (5.66%) DHCP
7 32 (5.03%) LAN
8 31 (4.87%) SMTP
9 27 (4.25%) SNMP
10 26 (4.09%) WAN
11 23 (3.62%) VLAN
12 22 (3.46%) DMZ
12 22 (3.46%) SSL
13 21 (3.30%) Wireless
14 19 (2.99%) SAN
14 19 (2.99%) WLAN
15 18 (2.83%) Wi-Fi
16 17 (2.67%) IGMP
16 17 (2.67%) Multicast
17 16 (2.52%) Structured Cabling
Database & Business Intelligence
1 112 (17.61%) MySQL
2 71 (11.16%) PostgreSQL
3 44 (6.92%) Redis
3 44 (6.92%) SQL Server
4 35 (5.50%) Big Data
5 33 (5.19%) NoSQL
6 30 (4.72%) MariaDB
7 21 (3.30%) Amazon RDS
8 20 (3.14%) Relational Database
9 19 (2.99%) InfluxDB
10 16 (2.52%) Hadoop
10 16 (2.52%) MongoDB
11 15 (2.36%) RDBMS
12 13 (2.04%) Apache Cassandra
13 11 (1.73%) Amazon DynamoDB
14 8 (1.26%) SQL Server 2008
15 7 (1.10%) Azure SQL Database
16 6 (0.94%) Ingres
17 5 (0.79%) Amazon Athena
17 5 (0.79%) SQL Server 2016
Development Applications
1 219 (34.43%) Jenkins
2 189 (29.72%) Git (software)
3 111 (17.45%) JIRA
4 54 (8.49%) Atlassian Bamboo
5 51 (8.02%) GitLab
6 39 (6.13%) Bitbucket
7 37 (5.82%) Subversion
8 28 (4.40%) Artifactory
9 21 (3.30%) JUnit
10 20 (3.14%) Bitbucket Server
11 18 (2.83%) Sonatype Nexus
12 17 (2.67%) TeamCity
13 14 (2.20%) Maven
13 14 (2.20%) Postman
14 11 (1.73%) EasyMock
14 11 (1.73%) Vagrant
15 10 (1.57%) Octopus Deploy
15 10 (1.57%) Selenium
16 9 (1.42%) Team Foundation Server
16 9 (1.42%) Visual Studio
General
1 100 (15.72%) Finance
2 41 (6.45%) Public Sector
3 33 (5.19%) Telecoms
4 26 (4.09%) Retail
5 20 (3.14%) Manufacturing
6 19 (2.99%) Electronics
6 19 (2.99%) Marketing
7 14 (2.20%) Automotive
8 13 (2.04%) Legal
9 12 (1.89%) Back Office
10 11 (1.73%) Financial Institution
11 8 (1.26%) Banking
12 6 (0.94%) Games
13 5 (0.79%) Billing
14 4 (0.63%) Investment Banking
14 4 (0.63%) Law
15 3 (0.47%) Pharmaceutical
16 2 (0.31%) Advertising
16 2 (0.31%) Publishing
17 1 (0.16%) Local Government
Job Titles
1 163 (25.63%) DevOps Engineer
2 90 (14.15%) Administrator
3 87 (13.68%) Developer
4 84 (13.21%) Systems Administrator
5 71 (11.16%) Linux Engineer
6 52 (8.18%) Infrastructure Engineer
7 47 (7.39%) Linux Systems Administrator
8 46 (7.23%) Linux Administrator
9 43 (6.76%) AWS Engineer
10 41 (6.45%) Kubernetes Engineer
11 39 (6.13%) Java Developer
11 39 (6.13%) Platform Engineer
11 39 (6.13%) Systems Engineer
12 38 (5.97%) AWS DevOps
13 37 (5.82%) AWS DevOps Engineer
13 37 (5.82%) Senior DevOps
13 37 (5.82%) Support Engineer
14 30 (4.72%) Linux/Unix DevOps
14 30 (4.72%) Software Developer
15 28 (4.40%) Senior DevOps Engineer
Libraries, Frameworks & Software Standards
1 81 (12.74%) Elastic Stack
2 67 (10.53%) LAMP
3 61 (9.59%) HTML
4 60 (9.43%) Spring
5 51 (8.02%) HTML5
6 48 (7.55%) RabbitMQ
7 47 (7.39%) CSS
8 38 (5.97%) XML
9 37 (5.82%) LDAP
10 36 (5.66%) REST
10 36 (5.66%) Web Services
11 29 (4.56%) RESTful
12 26 (4.09%) Kafka
12 26 (4.09%) Node.js
13 23 (3.62%) SOAP
14 21 (3.30%) JSON
15 20 (3.14%) Java EE
15 20 (3.14%) jQuery
16 18 (2.83%) .NET
16 18 (2.83%) XSL
Miscellaneous
1 68 (10.69%) Public Cloud
2 51 (8.02%) Data Centre
3 39 (6.13%) Analytical Skills
4 29 (4.56%) Replication
5 26 (4.09%) Clustering
5 26 (4.09%) Management Information System
6 24 (3.77%) Self-Motivation
7 23 (3.62%) Wiki
8 20 (3.14%) Linux Command Line
9 17 (2.67%) Greenfield Project
9 17 (2.67%) User Experience
10 16 (2.52%) IPTV
10 16 (2.52%) MPEG
10 16 (2.52%) Video\Live Streaming
11 13 (2.04%) Enterprise Storage
12 10 (1.57%) Driving Licence
13 7 (1.10%) Cloud Native
13 7 (1.10%) Reinsurance
14 6 (0.94%) Mobile App
14 6 (0.94%) Virtual Team
Operating Systems
1 636 (100.00%) Linux
2 218 (34.28%) Windows
3 201 (31.60%) Ubuntu
4 195 (30.66%) Red Hat Enterprise Linux
5 97 (15.25%) Windows Server
6 77 (12.11%) Debian
7 71 (11.16%) Unix
8 53 (8.33%) Fedora
9 40 (6.29%) Solaris
10 39 (6.13%) Windows Server 2012
11 22 (3.46%) Windows Server 2008
12 20 (3.14%) Windows 7
13 17 (2.67%) Windows 10
14 11 (1.73%) Android
14 11 (1.73%) Apple iOS
15 9 (1.42%) SUSE
16 6 (0.94%) FreeBSD
17 5 (0.79%) Amazon Linux
18 4 (0.63%) Mac OS
19 3 (0.47%) AIX
Processes & Methodologies
1 314 (49.37%) DevOps
2 191 (30.03%) Agile Software Development
3 106 (16.67%) Continuous Integration
4 104 (16.35%) Configuration Management
5 102 (16.04%) Open Source
6 78 (12.26%) Scrum
7 74 (11.64%) Infrastructure Engineering
7 74 (11.64%) Microservices
8 68 (10.69%) Software Engineering
9 67 (10.53%) ITIL
9 67 (10.53%) Migration
10 61 (9.59%) Mentoring
11 60 (9.43%) Test Automation
12 59 (9.28%) Fintech
13 53 (8.33%) Infrastructure as Code
14 49 (7.70%) Load Balancing
15 45 (7.08%) Problem-Solving
16 41 (6.45%) High Availability
17 37 (5.82%) Computer Science
18 36 (5.66%) OO
Programming Languages
1 342 (53.77%) Python
2 202 (31.76%) Bash Shell
3 143 (22.48%) Java
4 139 (21.86%) SQL
5 92 (14.47%) Ruby
6 76 (11.95%) Perl
7 67 (10.53%) Shell Script
8 64 (10.06%) PowerShell
9 53 (8.33%) JavaScript
10 51 (8.02%) PHP
11 50 (7.86%) C++
12 44 (6.92%) C
12 44 (6.92%) C#
13 39 (6.13%) Go
14 25 (3.93%) Korn
15 22 (3.46%) Scala
16 18 (2.83%) T-SQL
17 16 (2.52%) Java 8
18 14 (2.20%) XQuery
19 9 (1.42%) PL/SQL
Qualifications
1 90 (14.15%) Security Cleared
2 54 (8.49%) Degree
3 53 (8.33%) DV Cleared
4 46 (7.23%) SC Cleared
5 36 (5.66%) Microsoft Certification
6 34 (5.35%) Cisco Certification
7 27 (4.25%) RHCE
8 26 (4.09%) MCSE
9 24 (3.77%) CCNA
10 20 (3.14%) Computer Science Degree
11 13 (2.04%) CCNP
11 13 (2.04%) MCSA
12 12 (1.89%) CISSP
12 12 (1.89%) CompTIA Security+
12 12 (1.89%) GIAC
12 12 (1.89%) Linux+ Certification
12 12 (1.89%) Network+ Certification
12 12 (1.89%) SANS
12 12 (1.89%) SSCP
13 11 (1.73%) AWS Certification
Quality Assurance & Compliance
1 21 (3.30%) QA
2 13 (2.04%) ISO/IEC 27001
3 10 (1.57%) PCI DSS
4 8 (1.26%) SLA
5 5 (0.79%) GDPR
6 1 (0.16%) ISO 9001
6 1 (0.16%) ISO/IEC 20000
6 1 (0.16%) JTAG
6 1 (0.16%) NIST
System Software
1 260 (40.88%) Docker
2 107 (16.82%) VMware Infrastructure
3 65 (10.22%) Active Directory
4 38 (5.97%) VMware ESXi
5 29 (4.56%) KVM
6 26 (4.09%) Hyper-V
6 26 (4.09%) NFS
6 26 (4.09%) vSphere
7 25 (3.93%) Samba
7 25 (3.93%) VirtualBox
8 24 (3.77%) Xen
9 18 (2.83%) Virtual Machines
10 15 (2.36%) Apache ZooKeeper
11 8 (1.26%) Ceph
11 8 (1.26%) DRBD
11 8 (1.26%) OpenSSH
12 7 (1.10%) Postfix
13 6 (0.94%) iptables
13 6 (0.94%) Virtual Servers
14 5 (0.79%) Btrfs
Systems Management
1 243 (38.21%) Ansible
2 220 (34.59%) Puppet
3 189 (29.72%) Kubernetes
4 119 (18.71%) Terraform
5 79 (12.42%) Nagios
6 73 (11.48%) Opscode Chef
7 66 (10.38%) Grafana
8 60 (9.43%) ZABBIX
9 53 (8.33%) Packer
10 51 (8.02%) Docker Swarm
11 38 (5.97%) HAProxy
12 37 (5.82%) Prometheus
13 30 (4.72%) Graphite
14 27 (4.25%) Consul
15 23 (3.62%) WSUS
16 22 (3.46%) Kibana
17 21 (3.30%) SCCM
18 20 (3.14%) yum
19 18 (2.83%) logstash
19 18 (2.83%) vCenter Server
Vendors
1 326 (51.26%) Red Hat
2 138 (21.70%) VMware
3 89 (13.99%) Microsoft
4 60 (9.43%) Oracle
5 55 (8.65%) Cisco
6 53 (8.33%) Google
7 38 (5.97%) Atlassian
8 26 (4.09%) SolarWinds
9 21 (3.30%) Dell
10 19 (2.99%) SAP
11 15 (2.36%) EMC
12 13 (2.04%) Cloudera
12 13 (2.04%) Hortonworks
12 13 (2.04%) NetApp
13 12 (1.89%) Percona
13 12 (1.89%) SaltStack
14 11 (1.73%) Veeam
15 8 (1.26%) HP
15 8 (1.26%) Juniper
15 8 (1.26%) Sybase