Period
to 21 February 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 21 February 2020 with a comparison to the same period in the previous 2 years.

CentOS Linux
England > London
6 months to
21 Feb 2020
Same period 2019 Same period 2018
Rank 418 390 401
Rank change year-on-year -28 +11 -7
Permanent jobs citing CentOS 296 493 504
As % of all permanent IT jobs advertised in London 0.58% 0.79% 0.72%
As % of the Operating Systems category 2.83% 3.50% 2.97%
Number of salaries quoted 223 433 428
London median annual salary £60,000 £57,500 £57,500
Median salary % change year-on-year +4.35% - -
10th Percentile £40,000 £36,700 £36,963
90th Percentile £96,000 £88,750 £83,750
England median annual salary £55,000 £55,000 £50,000
% change year-on-year - +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 10,470 14,076 16,987
As % of all permanent IT jobs advertised in London 20.61% 22.46% 24.18%
Number of salaries quoted 8,485 11,679 13,990
London median annual salary £57,500 £60,000 £55,000
Median salary % change year-on-year -4.17% +9.09% -
10th Percentile £29,000 £30,000 £31,000
90th Percentile £90,000 £90,000 £85,000
England median annual salary £46,746 £47,500 £45,000
% change year-on-year -1.59% +5.56% -

CentOS
Job Vacancy Trend in London

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

Job vacancy trend for CentOS in London

CentOS
Salary Trend in London

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

Salary trend for CentOS in London

CentOS
Salary Histogram in London

The salary distribution of IT jobs citing CentOS in London over the 6 months to 21 February 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 21 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
Central London +7 68 £70,000 +27.27% 13
West London +31 37 £57,500 +1.77% 9
South London +1 23 £57,500 - 4
East London +18 10 £52,000 -25.71% 7
CentOS
England

For the 6 months to 21 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 London region with a requirement for CentOS.

1 296 (100.00%) Linux
2 162 (54.73%) DevOps
3 155 (52.36%) Python
4 153 (51.69%) Red Hat
5 136 (45.95%) AWS
6 131 (44.26%) Docker
7 114 (38.51%) Ansible
8 106 (35.81%) Jenkins
9 94 (31.76%) Windows
10 93 (31.42%) Ubuntu
10 93 (31.42%) Git (software)
11 92 (31.08%) Puppet
12 89 (30.07%) Agile Software Development
13 86 (29.05%) Java
13 86 (29.05%) SQL
13 86 (29.05%) Bash Shell
14 82 (27.70%) Red Hat Enterprise Linux
15 73 (24.66%) Kubernetes
16 64 (21.62%) VMware
17 63 (21.28%) Oracle
18 56 (18.92%) Finance
18 56 (18.92%) Azure
19 55 (18.58%) JIRA
19 55 (18.58%) TCP/IP
20 52 (17.57%) VMware Infrastructure
20 52 (17.57%) Terraform
21 50 (16.89%) Open Source
21 50 (16.89%) Ruby
22 49 (16.55%) RabbitMQ
23 45 (15.20%) Infrastructure Engineering

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 28 (9.46%) Tomcat
2 22 (7.43%) Apache
3 21 (7.09%) nginx
4 17 (5.74%) MS Exchange
4 17 (5.74%) OpenStack
5 11 (3.72%) GeoServer
6 8 (2.70%) IIS
7 7 (2.36%) Elasticsearch
8 6 (2.03%) Confluence
8 6 (2.03%) SAS
9 4 (1.35%) WordPress
10 3 (1.01%) WebSphere
11 1 (0.34%) Cloud Foundry
11 1 (0.34%) CloudStack
11 1 (0.34%) JBoss
11 1 (0.34%) Traefik
11 1 (0.34%) WebLogic
Applications
1 5 (1.69%) Microsoft Office
Business Applications
1 2 (0.68%) Rolfe and Nolan
Cloud Services
1 136 (45.95%) AWS
2 56 (18.92%) Azure
3 27 (9.12%) GCP
4 22 (7.43%) GitHub
5 21 (7.09%) AWS CloudFormation
5 21 (7.09%) Slack
6 20 (6.76%) Amazon SQS
7 15 (5.07%) SaaS
8 14 (4.73%) Cloud Computing
9 13 (4.39%) AWS CodePipeline
10 11 (3.72%) Amazon CloudWatch
10 11 (3.72%) Amazon S3
11 7 (2.36%) Amazon EC2
11 7 (2.36%) Amazon EKS
11 7 (2.36%) Azure Stack
12 6 (2.03%) Amazon ECS
12 6 (2.03%) AWS Lambda
12 6 (2.03%) Office 365
12 6 (2.03%) Serverless
12 6 (2.03%) Virtual Private Cloud
Communications & Networking
1 55 (18.58%) TCP/IP
2 41 (13.85%) Firewall
3 27 (9.12%) DNS
3 27 (9.12%) HTTP
4 20 (6.76%) DHCP
4 20 (6.76%) SNMP
5 17 (5.74%) LAN
5 17 (5.74%) VPN
5 17 (5.74%) WAN
6 16 (5.41%) SAN
6 16 (5.41%) Wireless
6 16 (5.41%) WLAN
7 15 (5.07%) SMTP
8 13 (4.39%) IGMP
8 13 (4.39%) Multicast
8 13 (4.39%) Structured Cabling
9 10 (3.38%) IPsec
9 10 (3.38%) OpenVPN
10 9 (3.04%) OSPF
10 9 (3.04%) VLAN
Database & Business Intelligence
1 44 (14.86%) Redis
2 41 (13.85%) MySQL
3 38 (12.84%) PostgreSQL
4 26 (8.78%) Amazon RDS
5 17 (5.74%) InfluxDB
5 17 (5.74%) SQL Server
6 16 (5.41%) Big Data
6 16 (5.41%) NoSQL
7 12 (4.05%) Hadoop
8 11 (3.72%) RDBMS
8 11 (3.72%) Relational Database
9 8 (2.70%) Amazon DynamoDB
9 8 (2.70%) Apache Cassandra
9 8 (2.70%) MariaDB
10 5 (1.69%) MongoDB
11 3 (1.01%) Blockchain
12 2 (0.68%) Data Warehouse
12 2 (0.68%) SQL Server 2008
12 2 (0.68%) SQL Server 2012
12 2 (0.68%) SQL Server 2014
Development Applications
1 106 (35.81%) Jenkins
2 93 (31.42%) Git (software)
3 55 (18.58%) JIRA
4 40 (13.51%) GitLab
5 23 (7.77%) Bitbucket
6 21 (7.09%) Artifactory
7 18 (6.08%) Subversion
8 15 (5.07%) Atlassian Bamboo
9 14 (4.73%) TeamCity
10 11 (3.72%) Postman
11 9 (3.04%) Maven
11 9 (3.04%) Vagrant
12 8 (2.70%) Octopus Deploy
13 7 (2.36%) Sonatype Nexus
14 6 (2.03%) Team Foundation Server
15 5 (1.69%) Fiddler
15 5 (1.69%) SoapUI
16 4 (1.35%) Bitbucket Server
16 4 (1.35%) CircleCI
17 3 (1.01%) Ant
General
1 56 (18.92%) Finance
2 19 (6.42%) Financial Institution
3 16 (5.41%) Back Office
4 13 (4.39%) Public Sector
5 10 (3.38%) Telecoms
6 6 (2.03%) Banking
7 5 (1.69%) Legal
8 4 (1.35%) Marketing
9 3 (1.01%) Games
9 3 (1.01%) iGaming
9 3 (1.01%) Pharmaceutical
10 2 (0.68%) Investment Banking
10 2 (0.68%) Law
10 2 (0.68%) Publishing
11 1 (0.34%) Electronics
11 1 (0.34%) Retail
Job Titles
1 71 (23.99%) DevOps Engineer
2 55 (18.58%) Developer
3 42 (14.19%) Administrator
4 41 (13.85%) Systems Administrator
5 37 (12.50%) Java Developer
6 32 (10.81%) Infrastructure Engineer
7 29 (9.80%) Senior Developer
8 27 (9.12%) Senior Java Developer
9 24 (8.11%) Linux Engineer
9 24 (8.11%) Senior DevOps
10 22 (7.43%) Linux Systems Administrator
11 20 (6.76%) Linux Administrator
11 20 (6.76%) Python Engineer
12 19 (6.42%) AWS Engineer
12 19 (6.42%) Support Engineer
13 18 (6.08%) Team Leader
14 17 (5.74%) Platform Engineer
15 16 (5.41%) AWS DevOps
15 16 (5.41%) Software Developer
16 15 (5.07%) AWS DevOps Engineer
Libraries, Frameworks & Software Standards
1 49 (16.55%) RabbitMQ
2 38 (12.84%) Elastic Stack
2 38 (12.84%) XML
3 36 (12.16%) CSS
4 30 (10.14%) HTML
4 30 (10.14%) REST
4 30 (10.14%) Spring
5 29 (9.80%) HTML5
6 26 (8.78%) RESTful
7 24 (8.11%) SOAP
8 22 (7.43%) Kafka
9 21 (7.09%) LAMP
10 20 (6.76%) JSON
10 20 (6.76%) PostGIS
10 20 (6.76%) XSL
11 19 (6.42%) Web Services
12 18 (6.08%) LDAP
12 18 (6.08%) XML Schema
13 16 (5.41%) J2SE
13 16 (5.41%) JDBC
Miscellaneous
1 38 (12.84%) Public Cloud
2 21 (7.09%) Data Centre
3 17 (5.74%) Clustering
3 17 (5.74%) Replication
4 15 (5.07%) Video\Live Streaming
5 13 (4.39%) IPTV
5 13 (4.39%) MPEG
6 12 (4.05%) Mobile App
7 10 (3.38%) Analytical Skills
8 9 (3.04%) Linux Command Line
9 8 (2.70%) User Experience
10 7 (2.36%) Reinsurance
10 7 (2.36%) Self-Motivation
11 6 (2.03%) Derivative
12 5 (1.69%) Enterprise Storage
12 5 (1.69%) Management Information System
13 3 (1.01%) Cloud Native
13 3 (1.01%) Eurex
13 3 (1.01%) Greenfield Project
14 2 (0.68%) Virtual Team
Operating Systems
1 296 (100.00%) Linux
2 94 (31.76%) Windows
3 93 (31.42%) Ubuntu
4 82 (27.70%) Red Hat Enterprise Linux
5 34 (11.49%) Unix
6 31 (10.47%) Fedora
7 28 (9.46%) Debian
8 26 (8.78%) Windows Server
9 17 (5.74%) Android
9 17 (5.74%) Apple iOS
10 15 (5.07%) Windows Server 2008
10 15 (5.07%) Windows Server 2012
11 12 (4.05%) Solaris
11 12 (4.05%) Windows 7
12 8 (2.70%) Windows 10
12 8 (2.70%) Windows Server 2003
13 7 (2.36%) FreeBSD
14 6 (2.03%) Oracle Linux
15 4 (1.35%) SUSE
16 3 (1.01%) Windows 8
Processes & Methodologies
1 162 (54.73%) DevOps
2 89 (30.07%) Agile Software Development
3 50 (16.89%) Open Source
4 45 (15.20%) Infrastructure Engineering
5 44 (14.86%) Mentoring
6 42 (14.19%) Fintech
7 38 (12.84%) Continuous Integration
8 35 (11.82%) Configuration Management
9 32 (10.81%) Scrum
10 31 (10.47%) Root Cause Analysis
11 30 (10.14%) Software Engineering
12 25 (8.45%) Infrastructure as Code
13 23 (7.77%) Decision-Making
13 23 (7.77%) MVC
13 23 (7.77%) Web Development
14 22 (7.43%) Microservices
14 22 (7.43%) Performance Management
15 21 (7.09%) Computer Science
15 21 (7.09%) Continuous Improvement
15 21 (7.09%) Migration
Programming Languages
1 155 (52.36%) Python
2 86 (29.05%) Bash Shell
2 86 (29.05%) Java
2 86 (29.05%) SQL
3 50 (16.89%) Ruby
4 35 (11.82%) Go
5 27 (9.12%) PowerShell
5 27 (9.12%) Shell Script
6 23 (7.77%) Perl
6 23 (7.77%) Scala
7 22 (7.43%) C
8 20 (6.76%) C#
9 17 (5.74%) C++
10 16 (5.41%) PL/SQL
11 15 (5.07%) PHP
11 15 (5.07%) XQuery
12 13 (4.39%) T-SQL
13 12 (4.05%) JavaScript
14 9 (3.04%) Korn
15 8 (2.70%) Groovy
Qualifications
1 36 (12.16%) Degree
2 33 (11.15%) Security Cleared
3 27 (9.12%) SC Cleared
4 16 (5.41%) Computer Science Degree
5 15 (5.07%) Cisco Certification
6 14 (4.73%) MCSE
6 14 (4.73%) Microsoft Certification
7 10 (3.38%) CCNA
8 9 (3.04%) CCNP
8 9 (3.04%) RHCE
9 8 (2.70%) ITIL Certification
9 8 (2.70%) MCSA
10 7 (2.36%) Oracle Certification
10 7 (2.36%) Sun Certification
11 6 (2.03%) MCP
11 6 (2.03%) Numerate Degree
11 6 (2.03%) VMware Certified Professional (VCP)
12 5 (1.69%) CISSP
12 5 (1.69%) Network+ Certification
12 5 (1.69%) SSCP
Quality Assurance & Compliance
1 17 (5.74%) QA
2 7 (2.36%) SLA
3 2 (0.68%) PCI DSS
4 1 (0.34%) JTAG
System Software
1 131 (44.26%) Docker
2 52 (17.57%) VMware Infrastructure
3 20 (6.76%) Active Directory
4 18 (6.08%) Apache ZooKeeper
5 12 (4.05%) Virtual Servers
6 11 (3.72%) KVM
6 11 (3.72%) VMware ESXi
7 8 (2.70%) Hyper-V
7 8 (2.70%) NFS
7 8 (2.70%) vSphere
8 7 (2.36%) iptables
8 7 (2.36%) Xen
8 7 (2.36%) XenApp
9 6 (2.03%) OpenSSH
9 6 (2.03%) Samba
10 5 (1.69%) VirtualBox
11 3 (1.01%) Virtual Machines
12 1 (0.34%) Kamailio
12 1 (0.34%) pfSense
12 1 (0.34%) VMware NSX
Systems Management
1 114 (38.51%) Ansible
2 92 (31.08%) Puppet
3 73 (24.66%) Kubernetes
4 52 (17.57%) Terraform
5 36 (12.16%) Opscode Chef
6 35 (11.82%) Grafana
7 34 (11.49%) Packer
8 30 (10.14%) Nagios
9 23 (7.77%) Docker Swarm
10 22 (7.43%) ZABBIX
11 14 (4.73%) Graphite
12 12 (4.05%) Consul
12 12 (4.05%) Prometheus
12 12 (4.05%) vCenter Server
13 9 (3.04%) Rancher
14 7 (2.36%) Kibana
14 7 (2.36%) Mesos
14 7 (2.36%) Salt
14 7 (2.36%) SCCM
15 6 (2.03%) FortiGate
Vendors
1 153 (51.69%) Red Hat
2 64 (21.62%) VMware
3 63 (21.28%) Oracle
4 30 (10.14%) Cisco
5 25 (8.45%) Microsoft
6 20 (6.76%) Atlassian
7 9 (3.04%) Citrix
8 8 (2.70%) HP
8 8 (2.70%) SaltStack
9 7 (2.36%) Dell
9 7 (2.36%) Sybase
10 5 (1.69%) Cloudera
10 5 (1.69%) EMC
10 5 (1.69%) Hortonworks
10 5 (1.69%) NetApp
10 5 (1.69%) SolarWinds
11 4 (1.35%) Juniper
11 4 (1.35%) LogicMonitor
12 3 (1.01%) CQG
12 3 (1.01%) Ubiquiti