Period
to 16 February 2020

The following table provides summary statistics for permanent job vacancies advertised in the UK excluding London 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 16 February 2020 with a comparison to the same period in the previous 2 years.

CentOS Linux
UK > UK excluding London
6 months to
16 Feb 2020
Same period 2019 Same period 2018
Rank 461 392 379
Rank change year-on-year -69 -13 +1
Permanent jobs citing CentOS 341 600 765
As % of all permanent IT jobs advertised in the UK excluding London 0.50% 0.71% 0.75%
As % of the Operating Systems category 2.12% 2.98% 3.07%
Number of salaries quoted 301 481 683
UK excluding London median annual salary £49,000 £45,000 £43,500
Median salary % change year-on-year +8.89% +3.45% -3.33%
10th Percentile £31,000 £26,750 £28,750
90th Percentile £70,000 £74,000 £65,800
UK median annual salary £54,000 £52,500 £50,000
% change year-on-year +2.86% +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 the UK excluding London with a requirement for operating system skills.

All Operating Systems
UK excluding London
Permanent vacancies with a requirement for operating system skills 16,071 20,133 24,902
As % of all permanent IT jobs advertised in the UK excluding London 23.41% 23.90% 24.50%
Number of salaries quoted 12,811 15,784 20,518
UK excluding London median annual salary £42,240 £42,000 £40,000
Median salary % change year-on-year +0.57% +5.00% +1.27%
10th Percentile £23,500 £24,000 £22,500
90th Percentile £66,250 £65,000 £62,500
UK median annual salary £45,000 £47,500 £45,000
% change year-on-year -5.26% +5.56% +3.45%

CentOS
Job Vacancy Trend in the UK excluding London

Job postings citing CentOS as a percentage of all IT jobs advertised in the UK excluding London.

Job vacancy trend for CentOS in the UK excluding London

CentOS
Salary Trend in the UK excluding London

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

Salary trend for CentOS in the UK excluding London

CentOS
Salary Histogram in the UK excluding London

The salary distribution of IT jobs citing CentOS in the UK excluding London over the 6 months to 16 February 2020.

Salary histogram for CentOS in the UK excluding London

CentOS
Job Locations in the UK excluding London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the UK excluding London region over the 6 months to 16 February 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
South West +38 113 £50,000 - 31
South East -29 95 £50,000 -4.76% 56
North of England 0 53 £47,500 +18.75% 21
Midlands +16 38 £45,000 -5.26% 5
North West +18 35 £50,000 +11.11% 13
West Midlands +27 27 £52,500 +90.91% 1
East of England +22 25 £46,250 +8.82% 8
Yorkshire +13 14 £36,000 +20.00% 3
Scotland +33 11 £35,000 +7.69% 10
East Midlands +17 11 £35,000 -47.17% 4
Wales -35 7 £47,500 +5.56% 5
North East +3 4 £38,750 -3.13% 5
Northern Ireland +12 1 £22,500 - 2
CentOS
UK

For the 6 months to 16 February 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 UK excluding London region with a requirement for CentOS.

1 341 (100.00%) Linux
2 180 (52.79%) Python
3 172 (50.44%) Red Hat
4 144 (42.23%) DevOps
5 134 (39.30%) Windows
6 123 (36.07%) Ansible
7 121 (35.48%) Docker
8 106 (31.09%) Red Hat Enterprise Linux
9 105 (30.79%) Kubernetes
10 104 (30.50%) Bash Shell
10 104 (30.50%) Agile Software Development
11 103 (30.21%) Puppet
12 100 (29.33%) Ubuntu
13 98 (28.74%) Jenkins
14 94 (27.57%) Git (software)
15 93 (27.27%) VMware
16 86 (25.22%) Apache
17 85 (24.93%) AWS
18 79 (23.17%) Azure
19 78 (22.87%) Windows Server
20 72 (21.11%) SQL
21 67 (19.65%) VMware Infrastructure
22 65 (19.06%) Security Cleared
23 63 (18.48%) Continuous Integration
24 62 (18.18%) GCP
25 60 (17.60%) MySQL
26 59 (17.30%) Microsoft
26 59 (17.30%) JIRA
27 58 (17.01%) Configuration Management
27 58 (17.01%) Terraform

CentOS
Co-occurring IT Skills in the UK excluding London 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 86 (25.22%) Apache
2 34 (9.97%) nginx
3 23 (6.74%) Confluence
4 20 (5.87%) Tomcat
5 17 (4.99%) SharePoint
6 15 (4.40%) IIS
7 11 (3.23%) MS Exchange
8 10 (2.93%) WordPress
9 9 (2.64%) Elasticsearch
10 7 (2.05%) Exchange Server 2010
11 6 (1.76%) OpenStack
12 5 (1.47%) Exchange Server 2013
13 3 (0.88%) Skype for Business
13 3 (0.88%) WebLogic
14 2 (0.59%) WebSphere
15 1 (0.29%) JBoss
15 1 (0.29%) Site Server
Applications
1 22 (6.45%) Microsoft Office
2 5 (1.47%) Microsoft Excel
3 3 (0.88%) Microsoft PowerPoint
Business Applications
1 1 (0.29%) Dynamics CRM
1 1 (0.29%) Sage 200
Cloud Services
1 85 (24.93%) AWS
2 79 (23.17%) Azure
3 62 (18.18%) GCP
4 21 (6.16%) SaaS
5 20 (5.87%) GitHub
6 17 (4.99%) Office 365
7 15 (4.40%) Virtual Private Cloud
8 14 (4.11%) IaaS
9 12 (3.52%) npm
10 10 (2.93%) PaaS
11 7 (2.05%) AWS CloudFormation
12 6 (1.76%) Cloud Computing
13 5 (1.47%) Amazon EKS
13 5 (1.47%) Azure Active Directory
13 5 (1.47%) Azure Data Factory
13 5 (1.47%) Azure ExpressRoute
14 4 (1.17%) Slack
14 4 (1.17%) Trello
15 3 (0.88%) Dynamics 365
15 3 (0.88%) OpenShift
Communications & Networking
1 56 (16.42%) Firewall
1 56 (16.42%) TCP/IP
2 51 (14.96%) DNS
3 28 (8.21%) VPN
4 20 (5.87%) DHCP
4 20 (5.87%) DMZ
5 13 (3.81%) LAN
5 13 (3.81%) Network Security
6 12 (3.52%) HTTP
6 12 (3.52%) SMTP
6 12 (3.52%) Wi-Fi
7 10 (2.93%) SAN
8 9 (2.64%) SSL
8 9 (2.64%) VLAN
8 9 (2.64%) WAN
9 5 (1.47%) MRTG
9 5 (1.47%) SMS
9 5 (1.47%) SSH
9 5 (1.47%) VoIP
10 4 (1.17%) PBX
Database & Business Intelligence
1 60 (17.60%) MySQL
2 28 (8.21%) PostgreSQL
3 25 (7.33%) SQL Server
4 21 (6.16%) MariaDB
5 18 (5.28%) Big Data
6 17 (4.99%) NoSQL
7 7 (2.05%) Azure SQL Database
8 6 (1.76%) Relational Database
9 5 (1.47%) InfluxDB
9 5 (1.47%) RDBMS
9 5 (1.47%) SQL Server 2008
10 4 (1.17%) Amazon Athena
10 4 (1.17%) Hadoop
10 4 (1.17%) Ingres
10 4 (1.17%) MongoDB
10 4 (1.17%) SQL Server 2016
11 3 (0.88%) FileMaker
12 2 (0.59%) Oracle Database
12 2 (0.59%) Redis
12 2 (0.59%) SQL Server 2012
Development Applications
1 98 (28.74%) Jenkins
2 94 (27.57%) Git (software)
3 59 (17.30%) JIRA
4 36 (10.56%) Atlassian Bamboo
5 19 (5.57%) Bitbucket
5 19 (5.57%) GitLab
6 15 (4.40%) Subversion
7 14 (4.11%) JUnit
8 12 (3.52%) Visual Studio
9 11 (3.23%) Bitbucket Server
10 10 (2.93%) NetBeans
11 8 (2.35%) EasyMock
11 8 (2.35%) Selenium
12 7 (2.05%) Sonatype Nexus
13 5 (1.47%) Artifactory
14 3 (0.88%) Bazaar
14 3 (0.88%) Robot Framework
15 2 (0.59%) Grunt
15 2 (0.59%) Vagrant
15 2 (0.59%) webpack
General
1 56 (16.42%) Finance
2 27 (7.92%) Public Sector
3 23 (6.74%) Telecoms
4 22 (6.45%) Retail
5 17 (4.99%) Manufacturing
5 17 (4.99%) Marketing
6 15 (4.40%) Electronics
7 14 (4.11%) Automotive
8 8 (2.35%) Legal
9 5 (1.47%) Billing
10 2 (0.59%) Advertising
11 1 (0.29%) Back Office
11 1 (0.29%) Games
11 1 (0.29%) Publishing
Job Titles
1 74 (21.70%) DevOps Engineer
2 52 (15.25%) Developer
3 41 (12.02%) Linux Engineer
4 34 (9.97%) Administrator
4 34 (9.97%) Infrastructure Engineer
5 28 (8.21%) Systems Administrator
6 27 (7.92%) Systems Engineer
7 26 (7.62%) Kubernetes Engineer
8 23 (6.74%) Platform Engineer
9 21 (6.16%) AWS Engineer
9 21 (6.16%) IT Support
9 21 (6.16%) Support Engineer
10 20 (5.87%) Full Stack Developer
10 20 (5.87%) Linux Administrator
11 19 (5.57%) IT Engineer
12 18 (5.28%) AWS DevOps
12 18 (5.28%) AWS DevOps Engineer
13 17 (4.99%) Linux Systems Administrator
14 16 (4.69%) Linux/Unix DevOps
15 15 (4.40%) Software Developer
Libraries, Frameworks & Software Standards
1 46 (13.49%) LAMP
2 43 (12.61%) HTML
3 38 (11.14%) Spring
4 37 (10.85%) Elastic Stack
5 32 (9.38%) HTML5
6 23 (6.74%) CSS
7 20 (5.87%) jQuery
7 20 (5.87%) Spring Boot
8 19 (5.57%) LDAP
8 19 (5.57%) Node.js
8 19 (5.57%) Web Services
9 17 (4.99%) Redux
10 14 (4.11%) AngularJS
11 12 (3.52%) Apache NiFi
11 12 (3.52%) Django
11 12 (3.52%) Java EE
12 11 (3.23%) Sass
13 9 (2.64%) EJB
13 9 (2.64%) JSF
13 9 (2.64%) LEMP Stack
Miscellaneous
1 35 (10.26%) Analytical Skills
2 32 (9.38%) Data Centre
2 32 (9.38%) Public Cloud
3 21 (6.16%) Management Information System
4 20 (5.87%) Greenfield Project
5 16 (4.69%) Self-Motivation
5 16 (4.69%) Wiki
6 13 (3.81%) Replication
7 12 (3.52%) Linux Command Line
7 12 (3.52%) User Experience
8 8 (2.35%) Enterprise Storage
9 7 (2.05%) Cloud Native
10 6 (1.76%) Driving Licence
11 5 (1.47%) PKI
12 4 (1.17%) Social Media
13 3 (0.88%) Cyberthreat
13 3 (0.88%) Enterprise Cloud
13 3 (0.88%) Enterprise Software
14 2 (0.59%) Hybrid Cloud
14 2 (0.59%) Virtual Team
Operating Systems
1 341 (100.00%) Linux
2 134 (39.30%) Windows
3 106 (31.09%) Red Hat Enterprise Linux
4 100 (29.33%) Ubuntu
5 78 (22.87%) Windows Server
6 47 (13.78%) Debian
7 41 (12.02%) Unix
8 39 (11.44%) Windows Server 2012
9 21 (6.16%) Solaris
10 19 (5.57%) Fedora
10 19 (5.57%) Windows Server 2008
11 14 (4.11%) Windows 7
12 10 (2.93%) Windows 10
13 6 (1.76%) SUSE
14 4 (1.17%) Amazon Linux
14 4 (1.17%) FreeBSD
15 3 (0.88%) AIX
15 3 (0.88%) FreeNAS
16 2 (0.59%) HPUX
16 2 (0.59%) Windows 8
Processes & Methodologies
1 144 (42.23%) DevOps
2 104 (30.50%) Agile Software Development
3 63 (18.48%) Continuous Integration
4 58 (17.01%) Configuration Management
5 51 (14.96%) ITIL
6 48 (14.08%) Open Source
7 44 (12.90%) Microservices
7 44 (12.90%) Test Automation
8 41 (12.02%) Infrastructure Engineering
9 40 (11.73%) Software Engineering
10 37 (10.85%) Migration
10 37 (10.85%) Scrum
11 33 (9.68%) OO
12 30 (8.80%) Change Management
12 30 (8.80%) Load Balancing
13 28 (8.21%) High Availability
14 27 (7.92%) Problem-Solving
15 24 (7.04%) Service Delivery
16 22 (6.45%) Infrastructure as Code
16 22 (6.45%) Task Automation
Programming Languages
1 180 (52.79%) Python
2 104 (30.50%) Bash Shell
3 72 (21.11%) SQL
4 56 (16.42%) Java
5 52 (15.25%) Perl
6 49 (14.37%) JavaScript
7 39 (11.44%) Ruby
8 38 (11.14%) PHP
9 31 (9.09%) Shell Script
10 30 (8.80%) PowerShell
11 26 (7.62%) C#
11 26 (7.62%) C++
12 22 (6.45%) C
13 20 (5.87%) Java 8
14 14 (4.11%) Korn
15 6 (1.76%) PHP 7
16 5 (1.47%) PHP 5
17 3 (0.88%) Go
18 2 (0.59%) HQL
18 2 (0.59%) R
Qualifications
1 65 (19.06%) Security Cleared
2 48 (14.08%) DV Cleared
3 26 (7.62%) Microsoft Certification
4 25 (7.33%) SC Cleared
5 22 (6.45%) Degree
6 19 (5.57%) MCSE
7 17 (4.99%) RHCE
8 15 (4.40%) Cisco Certification
9 13 (3.81%) CCNA
10 11 (3.23%) MCSA
11 10 (2.93%) CompTIA Security+
12 9 (2.64%) CEH
12 9 (2.64%) ISEB
12 9 (2.64%) ISTQB
12 9 (2.64%) PRINCE2 Certification
13 8 (2.35%) CISSP
13 8 (2.35%) GIAC
13 8 (2.35%) Linux+ Certification
13 8 (2.35%) Network+ Certification
13 8 (2.35%) SSCP
Quality Assurance & Compliance
1 12 (3.52%) ISO/IEC 27001
2 6 (1.76%) PCI DSS
2 6 (1.76%) SLA
3 5 (1.47%) GDPR
4 3 (0.88%) QA
5 1 (0.29%) ISO 9001
5 1 (0.29%) ISO/IEC 20000
System Software
1 121 (35.48%) Docker
2 67 (19.65%) VMware Infrastructure
3 54 (15.84%) Active Directory
4 26 (7.62%) VMware ESXi
5 23 (6.74%) KVM
6 20 (5.87%) NFS
6 20 (5.87%) vSphere
7 19 (5.57%) VirtualBox
8 18 (5.28%) Samba
9 16 (4.69%) Virtual Machines
10 15 (4.40%) Hyper-V
10 15 (4.40%) Xen
11 6 (1.76%) Squid
12 4 (1.17%) Ceph
12 4 (1.17%) Postfix
12 4 (1.17%) Terminal Services
13 3 (0.88%) Btrfs
13 3 (0.88%) DRBD
13 3 (0.88%) VMware Server
14 2 (0.59%) XenApp
Systems Management
1 123 (36.07%) Ansible
2 105 (30.79%) Kubernetes
3 103 (30.21%) Puppet
4 58 (17.01%) Terraform
5 41 (12.02%) Nagios
6 34 (9.97%) Grafana
6 34 (9.97%) ZABBIX
7 29 (8.50%) Opscode Chef
8 27 (7.92%) HAProxy
9 26 (7.62%) Docker Swarm
10 23 (6.74%) Prometheus
11 20 (5.87%) WSUS
12 17 (4.99%) Packer
12 17 (4.99%) SCCM
13 16 (4.69%) Consul
13 16 (4.69%) Graphite
13 16 (4.69%) yum
14 15 (4.40%) Red Hat Spacewalk
15 14 (4.11%) Red Hat Satellite
15 14 (4.11%) vCenter Server
Vendors
1 172 (50.44%) Red Hat
2 93 (27.27%) VMware
3 59 (17.30%) Microsoft
4 43 (12.61%) Google
5 23 (6.74%) Cisco
6 22 (6.45%) Atlassian
7 19 (5.57%) SolarWinds
8 16 (4.69%) Dell
8 16 (4.69%) SAP
9 12 (3.52%) Veeam
10 8 (2.35%) Cloudera
10 8 (2.35%) EMC
10 8 (2.35%) Hortonworks
10 8 (2.35%) NetApp
10 8 (2.35%) Oracle
10 8 (2.35%) Palo Alto
11 7 (2.05%) SaltStack
11 7 (2.05%) Symantec
12 6 (1.76%) Citrix
12 6 (1.76%) Juniper