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

CentOS Linux
UK > England
6 months to
29 Sep 2020
Same period 2019 Same period 2018
Rank 364 444 458
Rank change year-on-year +80 +14 -66
Permanent jobs citing CentOS 352 878 1,041
As % of all permanent jobs advertised in England 0.79% 0.69% 0.67%
As % of the Operating Systems category 3.70% 2.98% 2.93%
Number of salaries quoted 290 742 910
Median annual salary £52,500 £50,000 £55,000
Median salary % change year-on-year +5.00% -9.09% +10.00%
10th Percentile £33,175 £31,250 £32,500
90th Percentile £75,000 £78,750 £83,750
UK median annual salary £50,000 £50,000 £55,000
% change year-on-year - -9.09% +10.00%

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 9,504 29,416 35,533
As % of all permanent IT jobs advertised in England 21.33% 23.01% 23.04%
Number of salaries quoted 7,873 23,440 28,887
Median annual salary £50,000 £47,500 £47,500
Median salary % change year-on-year +5.26% - +5.56%
10th Percentile £29,000 £25,250 £25,500
90th Percentile £81,250 £80,000 £77,500
UK median annual salary £50,000 £45,000 £47,500
% change year-on-year +11.11% -5.26% +5.56%

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 September 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 September 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 +135 128 £70,000 +16.67% 18
South West +55 81 £46,000 -3.16% 14
North of England +130 61 £44,000 +10.00% 11
South East +101 41 £50,000 - 19
North West +85 33 £40,250 +0.63% 9
Yorkshire +147 26 £44,000 -2.22% 1
East of England +67 22 £55,000 +22.22% 5
Midlands +98 14 £32,500 -22.62% 5
West Midlands +95 11 £30,000 -28.57% 4
East Midlands +80 3 £42,500 -5.56% 1
North East +5 2 - - 1
CentOS
UK

For the 6 months to 29 September 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.

1 352 (100.00%) Linux
2 207 (58.81%) Python
3 168 (47.73%) DevOps
4 157 (44.60%) Red Hat
5 152 (43.18%) Red Hat Enterprise Linux
6 145 (41.19%) Agile Software Development
7 139 (39.49%) AWS
8 136 (38.64%) Git (software)
9 132 (37.50%) Jenkins
10 130 (36.93%) Ansible
11 121 (34.38%) Puppet
12 109 (30.97%) Terraform
13 107 (30.40%) Bash Shell
14 102 (28.98%) Docker
15 101 (28.69%) Configuration Management
16 100 (28.41%) Open Source
17 96 (27.27%) Windows
18 93 (26.42%) VMware
19 90 (25.57%) Ruby
20 87 (24.72%) Azure
21 81 (23.01%) Ubuntu
22 79 (22.44%) SQL
23 75 (21.31%) MySQL
24 73 (20.74%) Kubernetes
25 72 (20.45%) Elastic Stack
26 69 (19.60%) Atlassian Bamboo
26 69 (19.60%) VMware Infrastructure
27 68 (19.32%) JIRA
28 62 (17.61%) Continuous Integration
28 62 (17.61%) Public Sector

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 54 (15.34%) Confluence
2 37 (10.51%) Apache
3 20 (5.68%) OpenStack
4 16 (4.55%) MS Exchange
5 14 (3.98%) Elasticsearch
6 12 (3.41%) Tomcat
7 8 (2.27%) WordPress
8 7 (1.99%) nginx
9 6 (1.70%) Cloud Foundry
9 6 (1.70%) CloudStack
10 5 (1.42%) GeoServer
11 3 (0.85%) Apache Solr
11 3 (0.85%) SharePoint
11 3 (0.85%) Skype for Business
12 1 (0.28%) Drupal
12 1 (0.28%) Exchange Server 2010
12 1 (0.28%) IIS
12 1 (0.28%) SharePoint Server
12 1 (0.28%) SilverStripe
12 1 (0.28%) WebSphere
Applications
1 6 (1.70%) Microsoft Office
Business Applications
1 1 (0.28%) Dynamics CRM
1 1 (0.28%) Magento
Cloud Services
1 139 (39.49%) AWS
2 87 (24.72%) Azure
3 46 (13.07%) GitHub
4 43 (12.22%) Cloud Computing
5 29 (8.24%) Office 365
6 26 (7.39%) IaaS
7 21 (5.97%) Azure Active Directory
8 19 (5.40%) Amazon EC2
9 17 (4.83%) AWS CloudFormation
10 16 (4.55%) GCP
10 16 (4.55%) OpenShift
11 13 (3.69%) Amazon S3
11 13 (3.69%) Virtual Private Cloud
12 11 (3.13%) Serverless
13 10 (2.84%) AWS Lambda
14 9 (2.56%) Amazon ElastiCache
14 9 (2.56%) AWS Elastic Beanstalk
14 9 (2.56%) Route 53
15 8 (2.27%) AWS Fargate
16 7 (1.99%) Amazon EKS
Communications & Networking
1 50 (14.20%) DNS
2 39 (11.08%) TCP/IP
3 35 (9.94%) DHCP
4 29 (8.24%) Firewall
5 26 (7.39%) HTTP
6 24 (6.82%) VPN
7 16 (4.55%) SSL
8 15 (4.26%) SMTP
9 13 (3.69%) IPv6
9 13 (3.69%) VLAN
10 11 (3.13%) DMARC
10 11 (3.13%) FTP
11 10 (2.84%) IMAP
11 10 (2.84%) Internet
12 9 (2.56%) Broadband
13 8 (2.27%) IPv4
13 8 (2.27%) Network Security
13 8 (2.27%) SSH
14 7 (1.99%) Cisco IOS
14 7 (1.99%) FIX Connectivity
Database & Business Intelligence
1 75 (21.31%) MySQL
2 55 (15.63%) PostgreSQL
3 43 (12.22%) NoSQL
4 40 (11.36%) SQL Server
5 27 (7.67%) MongoDB
6 22 (6.25%) MariaDB
7 21 (5.97%) Redis
8 19 (5.40%) Relational Database
9 14 (3.98%) Amazon RDS
9 14 (3.98%) Big Data
10 11 (3.13%) Hadoop
11 10 (2.84%) Apache Cassandra
12 8 (2.27%) Amazon DynamoDB
13 3 (0.85%) SQL Server 2014
14 2 (0.57%) Couchbase
14 2 (0.57%) InterSystems Cache
14 2 (0.57%) RDBMS
15 1 (0.28%) KDB
15 1 (0.28%) SQL Server 2008
15 1 (0.28%) SQL Server Integration Services
Development Applications
1 136 (38.64%) Git (software)
2 132 (37.50%) Jenkins
3 69 (19.60%) Atlassian Bamboo
4 68 (19.32%) JIRA
5 54 (15.34%) GitLab
6 19 (5.40%) Artifactory
7 16 (4.55%) Bitbucket
7 16 (4.55%) Sonatype Nexus
8 14 (3.98%) Vagrant
9 11 (3.13%) Bitbucket Server
9 11 (3.13%) Gerrit
10 10 (2.84%) TeamCity
11 9 (2.56%) Selenium
11 9 (2.56%) Travis CI
12 7 (1.99%) Maven
13 6 (1.70%) SonarQube
14 5 (1.42%) JUnit
15 4 (1.14%) Gradle
15 4 (1.14%) Visual Studio Team System
16 3 (0.85%) Mockito
General
1 62 (17.61%) Public Sector
2 42 (11.93%) Finance
3 16 (4.55%) Telecoms
4 14 (3.98%) Marketing
5 11 (3.13%) Electronics
5 11 (3.13%) Games
5 11 (3.13%) Manufacturing
6 9 (2.56%) Banking
7 7 (1.99%) Advertising
8 5 (1.42%) Law
9 3 (0.85%) Aerospace
9 3 (0.85%) Back Office
9 3 (0.85%) Retail
10 2 (0.57%) Automotive
Job Titles
1 109 (30.97%) DevOps Engineer
2 80 (22.73%) Linux Engineer
3 53 (15.06%) Platform Engineer
4 43 (12.22%) Developer
5 37 (10.51%) Systems Administrator
6 31 (8.81%) Administrator
7 29 (8.24%) Infrastructure Engineer
8 25 (7.10%) Linux Systems Administrator
9 22 (6.25%) Software Engineer
9 22 (6.25%) Systems Engineer
10 21 (5.97%) Senior DevOps
10 21 (5.97%) Senior DevOps Engineer
11 19 (5.40%) Linux Administrator
11 19 (5.40%) PHP Developer
12 17 (4.83%) Linux Systems Engineer
13 16 (4.55%) Linux Infrastructure Engineer
14 15 (4.26%) Linux Support
14 15 (4.26%) Python Developer
15 14 (3.98%) Linux DevOps Engineer
15 14 (3.98%) Linux/Unix DevOps
Libraries, Frameworks & Software Standards
1 72 (20.45%) Elastic Stack
2 31 (8.81%) HTML
3 28 (7.95%) LDAP
4 25 (7.10%) LAMP
5 22 (6.25%) Kafka
6 20 (5.68%) RESTful
6 20 (5.68%) YAML
7 19 (5.40%) CSS
8 17 (4.83%) Apache NiFi
9 16 (4.55%) Node.js
9 16 (4.55%) Web Services
10 15 (4.26%) XML
11 14 (3.98%) JSON
12 13 (3.69%) REST
13 12 (3.41%) RabbitMQ
14 11 (3.13%) jQuery
14 11 (3.13%) SOAP
15 10 (2.84%) LAPP Stack
15 10 (2.84%) LEMP Stack
15 10 (2.84%) Vue.js
Miscellaneous
1 33 (9.38%) Data Centre
2 19 (5.40%) Public Cloud
3 17 (4.83%) Linux Command Line
4 12 (3.41%) Self-Motivation
5 8 (2.27%) Greenfield Project
6 7 (1.99%) Eurex
6 7 (1.99%) PKI
6 7 (1.99%) Replication
7 6 (1.70%) Cyberthreat
7 6 (1.70%) iPhone
7 6 (1.70%) Xbox
8 4 (1.14%) Clustering
8 4 (1.14%) Cyberattack
8 4 (1.14%) Hedge funds
9 3 (0.85%) Cloud Native
9 3 (0.85%) Equities
9 3 (0.85%) Fixed Income
9 3 (0.85%) Foreign Exchange (FX)
9 3 (0.85%) Management Information System
9 3 (0.85%) PMI
Operating Systems
1 352 (100.00%) Linux
2 152 (43.18%) Red Hat Enterprise Linux
3 96 (27.27%) Windows
4 81 (23.01%) Ubuntu
5 43 (12.22%) Windows Server
6 39 (11.08%) Debian
6 39 (11.08%) Unix
7 28 (7.95%) Windows Server 2012
8 20 (5.68%) Windows Server 2016
9 19 (5.40%) Fedora
10 12 (3.41%) Solaris
11 10 (2.84%) Amazon Linux
11 10 (2.84%) Windows 10
12 9 (2.56%) CoreOS
12 9 (2.56%) Windows 7
12 9 (2.56%) Windows Server 2008
13 8 (2.27%) FreeBSD
14 7 (1.99%) Android
14 7 (1.99%) SUSE
15 6 (1.70%) Mac OS X
Processes & Methodologies
1 168 (47.73%) DevOps
2 145 (41.19%) Agile Software Development
3 101 (28.69%) Configuration Management
4 100 (28.41%) Open Source
5 62 (17.61%) Continuous Integration
6 59 (16.76%) Infrastructure Automation
7 57 (16.19%) Continuous Delivery
8 56 (15.91%) Load Balancing
9 53 (15.06%) Microservices
10 52 (14.77%) Software Engineering
11 50 (14.20%) High Availability
12 47 (13.35%) IT Strategy
13 43 (12.22%) User-Centered Design (UCD)
14 40 (11.36%) E-Procurement
14 40 (11.36%) Scrum
15 36 (10.23%) Infrastructure as Code
16 35 (9.94%) Infrastructure Engineering
17 32 (9.09%) Mentoring
18 31 (8.81%) Cybersecurity
19 26 (7.39%) Test Automation
Programming Languages
1 207 (58.81%) Python
2 107 (30.40%) Bash Shell
3 90 (25.57%) Ruby
4 79 (22.44%) SQL
5 59 (16.76%) Go
6 55 (15.63%) Java
6 55 (15.63%) PHP
7 47 (13.35%) PowerShell
8 41 (11.65%) C
9 32 (9.09%) Shell Script
10 30 (8.52%) JavaScript
11 28 (7.95%) Perl
12 26 (7.39%) C++
13 12 (3.41%) C#
14 10 (2.84%) Groovy
14 10 (2.84%) PL/SQL
15 7 (1.99%) Rust
16 5 (1.42%) Bourne shell
17 4 (1.14%) PHP 5
17 4 (1.14%) R
Qualifications
1 42 (11.93%) AWS Certification
2 38 (10.80%) Security Cleared
3 23 (6.53%) DV Cleared
4 21 (5.97%) Degree
5 15 (4.26%) SC Cleared
6 7 (1.99%) Computer Science Degree
7 5 (1.42%) CCNA
7 5 (1.42%) Cisco Certification
8 4 (1.14%) RHCE
9 3 (0.85%) MCSA
9 3 (0.85%) Microsoft Certification
9 3 (0.85%) PMI Certification
10 2 (0.57%) RHCSA
11 1 (0.28%) A+ Certification
11 1 (0.28%) CCIE
11 1 (0.28%) CCNP
11 1 (0.28%) Linux+ Certification
11 1 (0.28%) LPIC
11 1 (0.28%) MCSE
11 1 (0.28%) VMware Certified Professional (VCP)
Quality Assurance & Compliance
1 13 (3.69%) QA
2 11 (3.13%) ISO/IEC 27001
3 9 (2.56%) SLA
4 6 (1.70%) ISO 9001
5 4 (1.14%) GDPR
6 3 (0.85%) PCI DSS
7 1 (0.28%) Cyber Essentials
System Software
1 102 (28.98%) Docker
2 69 (19.60%) VMware Infrastructure
3 51 (14.49%) Active Directory
4 22 (6.25%) Hyper-V
5 21 (5.97%) vSphere
6 18 (5.11%) VirtualBox
7 9 (2.56%) KVM
7 9 (2.56%) VMware ESXi
8 6 (1.70%) GlusterFS
8 6 (1.70%) LXC
9 4 (1.14%) Apache ZooKeeper
9 4 (1.14%) NFS
9 4 (1.14%) Snort
10 3 (0.85%) Citrix Hypervisor
10 3 (0.85%) Microsoft Virtual Server
10 3 (0.85%) Virtual Servers
11 2 (0.57%) GPFS
11 2 (0.57%) Lustre
11 2 (0.57%) Virtual Machines
11 2 (0.57%) VMware NSX
Systems Management
1 130 (36.93%) Ansible
2 121 (34.38%) Puppet
3 109 (30.97%) Terraform
4 73 (20.74%) Kubernetes
5 49 (13.92%) Prometheus
6 46 (13.07%) Grafana
7 43 (12.22%) Graphite
8 34 (9.66%) Opscode Chef
9 16 (4.55%) Nagios
10 13 (3.69%) WSUS
11 12 (3.41%) Packer
12 9 (2.56%) HAProxy
12 9 (2.56%) Icinga
12 9 (2.56%) Kibana
13 8 (2.27%) logstash
13 8 (2.27%) Rundeck
13 8 (2.27%) SCCM
14 7 (1.99%) Consul
14 7 (1.99%) SCOM
15 6 (1.70%) Proxmox
Vendors
1 157 (44.60%) Red Hat
2 93 (26.42%) VMware
3 39 (11.08%) Microsoft
4 26 (7.39%) Oracle
5 25 (7.10%) Atlassian
5 25 (7.10%) Cisco
6 19 (5.40%) SolarWinds
7 13 (3.69%) Splunk
8 11 (3.13%) Google
8 11 (3.13%) SAP
9 10 (2.84%) Dell
9 10 (2.84%) HP
9 10 (2.84%) ServiceNow
10 8 (2.27%) SaltStack
11 7 (1.99%) Fidessa
11 7 (1.99%) Juniper
11 7 (1.99%) LogicMonitor
11 7 (1.99%) New Relic
11 7 (1.99%) Reuters
11 7 (1.99%) Trayport