Period
to 24 October 2020

The following table provides summary statistics for permanent job vacancies advertised in 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 24 October 2020 with a comparison to the same period in the previous 2 years.

CentOS Linux
England > London
6 months to
24 Oct 2020
Same period 2019 Same period 2018
Rank 336 456 403
Rank change year-on-year +120 -53 -18
Permanent jobs citing CentOS 126 281 509
As % of all permanent jobs advertised in London 0.64% 0.52% 0.75%
As % of the Operating Systems category 3.32% 2.39% 3.31%
Number of salaries quoted 106 232 465
Median annual salary £70,000 £61,250 £58,000
Median salary % change year-on-year +14.29% +5.60% -3.33%
10th Percentile £42,500 £37,500 £37,500
90th Percentile £91,875 £105,000 £85,000
England median annual salary £52,500 £50,000 £55,000
% change year-on-year +5.00% -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 London with a requirement for operating system skills.

All Operating Systems
London
Permanent vacancies with a requirement for operating system skills 3,799 11,751 15,385
As % of all permanent IT jobs advertised in London 19.35% 21.57% 22.64%
Number of salaries quoted 3,161 9,619 12,694
Median annual salary £65,000 £58,000 £57,500
Median salary % change year-on-year +12.07% +0.87% +4.55%
10th Percentile £36,250 £28,500 £30,000
90th Percentile £95,000 £92,500 £90,000
England median annual salary £50,000 £45,500 £47,500
% change year-on-year +9.89% -4.21% +5.56%

CentOS
Job Vacancy Trend in London

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

Job vacancy trend for CentOS in London

CentOS
Salary Trend in London

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

Salary trend for CentOS in London

CentOS
Salary Histogram in London

Salary distribution for jobs citing CentOS in London over the 6 months to 24 October 2020.

Salary histogram for CentOS in London

CentOS
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing CentOS within the London region over the 6 months to 24 October 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
Central London +125 14 £70,000 +3.70% 9
East London +21 3 £60,000 +15.38%
South London +27 2 £58,750 +6.82% 2
CentOS
England

For the 6 months to 24 October 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 London region with a requirement for CentOS.

1 126 (100.00%) Linux
2 83 (65.87%) Python
3 67 (53.17%) Agile Software Development
4 56 (44.44%) AWS
4 56 (44.44%) Windows
5 53 (42.06%) VMware
6 52 (41.27%) Git (software)
7 51 (40.48%) Azure
7 51 (40.48%) DevOps
8 50 (39.68%) Ansible
9 49 (38.89%) Jenkins
10 47 (37.30%) Ruby
11 45 (35.71%) Terraform
12 44 (34.92%) VMware Infrastructure
13 42 (33.33%) Red Hat Enterprise Linux
13 42 (33.33%) Configuration Management
14 41 (32.54%) Bash Shell
14 41 (32.54%) Puppet
15 39 (30.95%) Active Directory
15 39 (30.95%) Red Hat
16 36 (28.57%) Open Source
17 34 (26.98%) DNS
18 33 (26.19%) Ubuntu
19 31 (24.60%) JIRA
19 31 (24.60%) TCP/IP
19 31 (24.60%) Windows Server
20 30 (23.81%) Elastic Stack
20 30 (23.81%) Infrastructure Automation
21 28 (22.22%) LDAP
21 28 (22.22%) PowerShell

CentOS
Co-occurring IT Skills in 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 19 (15.08%) Confluence
2 15 (11.90%) Apache
3 13 (10.32%) MS Exchange
4 8 (6.35%) OpenStack
5 6 (4.76%) Cloud Foundry
5 6 (4.76%) CloudStack
5 6 (4.76%) Tomcat
6 5 (3.97%) GeoServer
7 3 (2.38%) nginx
7 3 (2.38%) WordPress
8 2 (1.59%) Elasticsearch
9 1 (0.79%) IIS
9 1 (0.79%) SharePoint
9 1 (0.79%) WebSphere
Applications
1 5 (3.97%) Microsoft Office
Business Applications
1 1 (0.79%) Dynamics CRM
Cloud Services
1 56 (44.44%) AWS
2 51 (40.48%) Azure
3 24 (19.05%) Azure Active Directory
3 24 (19.05%) Office 365
4 19 (15.08%) Cloud Computing
5 18 (14.29%) IaaS
6 16 (12.70%) GitHub
7 8 (6.35%) AWS CloudFormation
8 6 (4.76%) DigitalOcean
8 6 (4.76%) Heroku
8 6 (4.76%) PaaS
9 5 (3.97%) Amazon EC2
9 5 (3.97%) Amazon SQS
9 5 (3.97%) GCP
10 4 (3.17%) G Suite
10 4 (3.17%) npm
10 4 (3.17%) SaaS
11 3 (2.38%) Amazon ECS
11 3 (2.38%) AWS CodePipeline
11 3 (2.38%) OpenShift
Communications & Networking
1 34 (26.98%) DNS
2 31 (24.60%) TCP/IP
3 25 (19.84%) HTTP
4 21 (16.67%) DHCP
5 16 (12.70%) SSL
6 15 (11.90%) Firewall
7 14 (11.11%) FTP
7 14 (11.11%) SMTP
8 13 (10.32%) IMAP
9 11 (8.73%) DMARC
10 9 (7.14%) SSH
11 7 (5.56%) IPv6
12 6 (4.76%) Cisco IOS
13 5 (3.97%) Broadband
13 5 (3.97%) OpenLDAP
13 5 (3.97%) VLAN
13 5 (3.97%) VPN
14 4 (3.17%) IPv4
14 4 (3.17%) SAN
14 4 (3.17%) SNMP
Database & Business Intelligence
1 27 (21.43%) PostgreSQL
2 18 (14.29%) MongoDB
3 11 (8.73%) SQL Server
4 10 (7.94%) Big Data
4 10 (7.94%) Hadoop
5 7 (5.56%) Redis
6 6 (4.76%) Amazon RDS
6 6 (4.76%) MySQL
6 6 (4.76%) NoSQL
6 6 (4.76%) Relational Database
7 5 (3.97%) Apache Cassandra
7 5 (3.97%) MariaDB
8 1 (0.79%) Amazon DynamoDB
8 1 (0.79%) Amazon Redshift
8 1 (0.79%) Azure SQL Database
8 1 (0.79%) InfluxDB
8 1 (0.79%) Kdb+
8 1 (0.79%) Power BI
8 1 (0.79%) RDBMS
8 1 (0.79%) SQL Server Integration Services
Development Applications
1 52 (41.27%) Git (software)
2 49 (38.89%) Jenkins
3 31 (24.60%) JIRA
4 20 (15.87%) Atlassian Bamboo
5 16 (12.70%) GitLab
6 14 (11.11%) Gerrit
7 13 (10.32%) Artifactory
8 7 (5.56%) Sonatype Nexus
9 6 (4.76%) Maven
10 5 (3.97%) Bitbucket
10 5 (3.97%) Visual Studio Team System
11 4 (3.17%) Gradle
12 3 (2.38%) Chocolatey
13 1 (0.79%) Ant
13 1 (0.79%) CircleCI
13 1 (0.79%) Cucumber
13 1 (0.79%) GoCD
13 1 (0.79%) Octopus Deploy
13 1 (0.79%) Redmine
13 1 (0.79%) TeamCity
General
1 19 (15.08%) Finance
2 18 (14.29%) Public Sector
3 7 (5.56%) Advertising
4 4 (3.17%) Law
5 2 (1.59%) Banking
6 1 (0.79%) Back Office
6 1 (0.79%) Telecoms
Job Titles
1 35 (27.78%) DevOps Engineer
2 26 (20.63%) Platform Engineer
3 23 (18.25%) Linux Engineer
4 16 (12.70%) Linux Support
5 15 (11.90%) Systems Engineer
6 13 (10.32%) Consultant
6 13 (10.32%) Linux Consultant
6 13 (10.32%) Systems Administrator
7 12 (9.52%) Cloud Consultant
7 12 (9.52%) Infrastructure Engineer
7 12 (9.52%) Support Consultant
8 11 (8.73%) Administrator
9 10 (7.94%) Linux Systems Engineer
10 8 (6.35%) Analyst
11 7 (5.56%) Linux Infrastructure Engineer
11 7 (5.56%) Senior DevOps
11 7 (5.56%) Senior DevOps Engineer
12 6 (4.76%) AWS Administrator
12 6 (4.76%) Network Engineer
12 6 (4.76%) Windows Systems Administrator
Libraries, Frameworks & Software Standards
1 30 (23.81%) Elastic Stack
2 28 (22.22%) LDAP
3 18 (14.29%) XML
4 17 (13.49%) YAML
5 8 (6.35%) REST
6 7 (5.56%) CSS
6 7 (5.56%) HTML
6 7 (5.56%) RabbitMQ
7 6 (4.76%) HTML5
7 6 (4.76%) LAMP
8 5 (3.97%) .NET
8 5 (3.97%) AngularJS
8 5 (3.97%) HTML5 Canvas
8 5 (3.97%) J2EE
8 5 (3.97%) JSON
8 5 (3.97%) LAPP Stack
8 5 (3.97%) PostGIS
8 5 (3.97%) RESTful
8 5 (3.97%) SOAP
8 5 (3.97%) XSL
Miscellaneous
1 15 (11.90%) Data Centre
2 10 (7.94%) Linux Command Line
3 6 (4.76%) iPhone
4 4 (3.17%) Eurex
4 4 (3.17%) Hedge funds
5 3 (2.38%) Equities
5 3 (2.38%) Fixed Income
5 3 (2.38%) Foreign Exchange (FX)
5 3 (2.38%) Management Information System
5 3 (2.38%) Replication
6 1 (0.79%) Algorithms
6 1 (0.79%) Clustering
6 1 (0.79%) Greenfield Project
6 1 (0.79%) Media Streaming
6 1 (0.79%) Self-Motivation
6 1 (0.79%) Video\Live Streaming
Operating Systems
1 126 (100.00%) Linux
2 56 (44.44%) Windows
3 42 (33.33%) Red Hat Enterprise Linux
4 33 (26.19%) Ubuntu
5 31 (24.60%) Windows Server
6 17 (13.49%) Unix
7 14 (11.11%) Fedora
7 14 (11.11%) Windows Server 2012
7 14 (11.11%) Windows Server 2016
8 12 (9.52%) Debian
9 7 (5.56%) Android
10 5 (3.97%) Mac OS X
10 5 (3.97%) Windows Server 2008
11 4 (3.17%) Solaris
11 4 (3.17%) SUSE
11 4 (3.17%) Windows 10
12 3 (2.38%) FreeBSD
12 3 (2.38%) Windows 8
13 2 (1.59%) Windows 7
14 1 (0.79%) Apple iOS
Processes & Methodologies
1 67 (53.17%) Agile Software Development
2 51 (40.48%) DevOps
3 42 (33.33%) Configuration Management
4 36 (28.57%) Open Source
5 30 (23.81%) Infrastructure Automation
6 25 (19.84%) Continuous Delivery
7 22 (17.46%) High Availability
7 22 (17.46%) Infrastructure as Code
8 20 (15.87%) Continuous Integration
8 20 (15.87%) Load Balancing
8 20 (15.87%) Scrum
8 20 (15.87%) Task Automation
9 19 (15.08%) Deployment Automation
10 18 (14.29%) Fintech
10 18 (14.29%) Infrastructure Engineering
10 18 (14.29%) IT Strategy
10 18 (14.29%) Kanban
10 18 (14.29%) Microservices
11 16 (12.70%) E-Procurement
11 16 (12.70%) User-Centered Design (UCD)
Programming Languages
1 83 (65.87%) Python
2 47 (37.30%) Ruby
3 41 (32.54%) Bash Shell
4 28 (22.22%) PowerShell
5 23 (18.25%) Go
5 23 (18.25%) Shell Script
6 20 (15.87%) Java
6 20 (15.87%) Perl
6 20 (15.87%) SQL
7 13 (10.32%) Groovy
8 11 (8.73%) PHP
9 9 (7.14%) C#
9 9 (7.14%) JavaScript
10 7 (5.56%) C
11 6 (4.76%) Bourne shell
12 5 (3.97%) C++
13 2 (1.59%) R
14 1 (0.79%) C-shell
14 1 (0.79%) PHP 7
14 1 (0.79%) TypeScript
Qualifications
1 17 (13.49%) AWS Certification
2 8 (6.35%) Degree
3 4 (3.17%) CCNA
3 4 (3.17%) Cisco Certification
3 4 (3.17%) Computer Science Degree
3 4 (3.17%) Security Cleared
4 3 (2.38%) MCSA
4 3 (2.38%) Microsoft Certification
4 3 (2.38%) SC Cleared
5 2 (1.59%) RHCSA
6 1 (0.79%) CCIE
6 1 (0.79%) CCNP
6 1 (0.79%) DV Cleared
6 1 (0.79%) Linux+ Certification
6 1 (0.79%) MCSE
6 1 (0.79%) RHCE
6 1 (0.79%) VMware Certified Professional (VCP)
Quality Assurance & Compliance
1 5 (3.97%) QA
2 4 (3.17%) GDPR
3 3 (2.38%) ISO/IEC 27001
3 3 (2.38%) PCI DSS
3 3 (2.38%) SLA
System Software
1 44 (34.92%) VMware Infrastructure
2 39 (30.95%) Active Directory
3 25 (19.84%) Docker
4 11 (8.73%) vSphere
5 10 (7.94%) Hyper-V
6 3 (2.38%) Apache ZooKeeper
7 2 (1.59%) Firmware
7 2 (1.59%) KVM
7 2 (1.59%) LXC
7 2 (1.59%) Virtual Machines
7 2 (1.59%) VMware ESXi
7 2 (1.59%) Xen
8 1 (0.79%) BIND 9
8 1 (0.79%) Kamailio
8 1 (0.79%) NFS
8 1 (0.79%) OpenSIPS
8 1 (0.79%) zsh
Systems Management
1 50 (39.68%) Ansible
2 45 (35.71%) Terraform
3 41 (32.54%) Puppet
4 21 (16.67%) Prometheus
5 19 (15.08%) Kubernetes
6 17 (13.49%) Grafana
6 17 (13.49%) Graphite
7 11 (8.73%) Opscode Chef
7 11 (8.73%) WSUS
8 8 (6.35%) Nagios
9 7 (5.56%) Packer
10 5 (3.97%) Rundeck
11 4 (3.17%) Icinga
12 3 (2.38%) HAProxy
12 3 (2.38%) yum
12 3 (2.38%) ZABBIX
13 2 (1.59%) Cobbler
13 2 (1.59%) Consul
13 2 (1.59%) Red Hat Spacewalk
13 2 (1.59%) Salt
Vendors
1 53 (42.06%) VMware
2 39 (30.95%) Red Hat
3 20 (15.87%) Atlassian
3 20 (15.87%) Microsoft
4 13 (10.32%) ServiceNow
5 12 (9.52%) SolarWinds
6 11 (8.73%) Cisco
7 8 (6.35%) Oracle
8 7 (5.56%) LogicMonitor
9 6 (4.76%) Rackspace
10 5 (3.97%) Google
10 5 (3.97%) HP
11 4 (3.17%) Bloomberg
11 4 (3.17%) CQG
11 4 (3.17%) Dell
11 4 (3.17%) Fidessa
11 4 (3.17%) ION Trading
11 4 (3.17%) Patsystems
11 4 (3.17%) Reuters
11 4 (3.17%) Sophos