Period
to 23 January 2021

The following table provides summary statistics for permanent job vacancies advertised in the City of London with a requirement for Linux skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Linux over the 6 months to 23 January 2021 with a comparison to the same period in the previous 2 years.

Linux
Central London > City of London
6 months to
23 Jan 2021
Same period 2020 Same period 2019
Rank 28 20 20
Rank change year-on-year -8 0 -2
Permanent jobs citing Linux 361 799 1,051
As % of all permanent jobs advertised in the City of London 8.33% 8.72% 10.17%
As % of the Operating Systems category 49.25% 41.06% 45.09%
Number of salaries quoted 359 670 964
Median annual salary £70,000 £75,000 £70,000
Median salary % change year-on-year -6.67% +7.14% +12.00%
10th Percentile £43,750 £45,000 £41,250
90th Percentile £95,000 £120,000 £96,250
Central London median annual salary £70,000 £75,000 £70,000
% change year-on-year -6.67% +7.14% +12.00%

Linux 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 City of London with a requirement for operating system skills.

All Operating Systems
City of London
Permanent vacancies with a requirement for operating system skills 733 1,946 2,331
As % of all permanent IT jobs advertised in the City of London 16.92% 21.24% 22.55%
Number of salaries quoted 647 1,648 2,067
Median annual salary £65,000 £60,000 £60,000
Median salary % change year-on-year +8.33% - +9.09%
10th Percentile £36,250 £27,675 £30,650
90th Percentile £92,500 £97,500 £93,750
Central London median annual salary £62,500 £60,000 £60,000
% change year-on-year +4.17% - +9.09%

Linux
Job Vacancy Trend in the City of London

Job postings citing Linux as a proportion of all IT jobs advertised in the City of London.

Job vacancy trend for Linux in the City of London

Linux
Salary Trend in the City of London

3-month moving average salary quoted in jobs citing Linux in the City of London.

Salary trend for Linux in the City of London

Linux
Salary Histogram in the City of London

Salary distribution for jobs citing Linux in the City of London over the 6 months to 23 January 2021.

Salary histogram for Linux in the City of London

Linux
Job Locations in the City of London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Linux within the City of London region over the 6 months to 23 January 2021. 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 Bridge +17 3 £45,000 -
Linux
Central London

For the 6 months to 23 January 2021, IT jobs citing Linux 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 City of London region with a requirement for Linux.

1 165 (45.71%) Python
2 149 (41.27%) DevOps
3 146 (40.44%) AWS
4 135 (37.40%) Finance
5 113 (31.30%) Windows
6 110 (30.47%) Agile Software Development
7 104 (28.81%) Jenkins
8 102 (28.25%) Kubernetes
9 101 (27.98%) Docker
10 95 (26.32%) Puppet
11 94 (26.04%) Azure
11 94 (26.04%) Ansible
12 90 (24.93%) Terraform
13 85 (23.55%) SQL
14 75 (20.78%) Java
15 59 (16.34%) Unix
16 57 (15.79%) TDD
17 56 (15.51%) Bash Shell
18 55 (15.24%) Git (software)
18 55 (15.24%) Fintech
19 52 (14.40%) C++
20 51 (14.13%) Opscode Chef
21 49 (13.57%) Software Engineering
22 48 (13.30%) PostgreSQL
23 46 (12.74%) VMware
24 45 (12.47%) Microsoft
24 45 (12.47%) Infrastructure as Code
25 41 (11.36%) Configuration Management
26 40 (11.08%) Firewall
26 40 (11.08%) SDLC

Linux
Co-occurring IT Skills in the City of 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 16 (4.43%) Apache
2 12 (3.32%) Cloud Foundry
3 8 (2.22%) Elasticsearch
4 7 (1.94%) Confluence
4 7 (1.94%) SharePoint
5 5 (1.39%) Apache Spark
6 3 (0.83%) MS Exchange
6 3 (0.83%) Red Hat Fuse
6 3 (0.83%) Tomcat
6 3 (0.83%) WebLogic
7 2 (0.55%) Adobe Experience Manager
7 2 (0.55%) JBoss
8 1 (0.28%) Apache Airflow
8 1 (0.28%) Apache TomEE
8 1 (0.28%) CMS
8 1 (0.28%) Ethereum
8 1 (0.28%) WebSphere
Applications
1 9 (2.49%) Microsoft Office
2 4 (1.11%) Microsoft Excel
3 1 (0.28%) Spreadsheet
Cloud Services
1 146 (40.44%) AWS
2 94 (26.04%) Azure
3 28 (7.76%) Datadog
4 26 (7.20%) GCP
5 17 (4.71%) AWS CloudFormation
6 16 (4.43%) IaaS
7 15 (4.16%) PaaS
8 13 (3.60%) OpenShift
9 12 (3.32%) Amazon CloudWatch
10 11 (3.05%) SaaS
11 10 (2.77%) GitHub
11 10 (2.77%) Office 365
12 8 (2.22%) Azure Active Directory
12 8 (2.22%) Serverless
13 5 (1.39%) Azure Data Factory
14 4 (1.11%) Amazon EC2
14 4 (1.11%) Power Platform
15 3 (0.83%) Amazon EMR
15 3 (0.83%) AWS Lambda
16 2 (0.55%) AWS Elastic Beanstalk
Communications & Networking
1 40 (11.08%) Firewall
2 20 (5.54%) LAN
2 20 (5.54%) Network Security
2 20 (5.54%) WAN
3 19 (5.26%) TCP/IP
4 11 (3.05%) SAN
4 11 (3.05%) VPN
5 10 (2.77%) SSL
6 9 (2.49%) NAS
6 9 (2.49%) Wireshark
7 8 (2.22%) BGP
7 8 (2.22%) DNS
8 7 (1.94%) Multicast
8 7 (1.94%) OSPF
9 5 (1.39%) Kerberos
10 4 (1.11%) Cisco Nexus
10 4 (1.11%) iSCSI
10 4 (1.11%) Wi-Fi
10 4 (1.11%) Wireless
11 3 (0.83%) F5 BIG-IP LTM
Database & Business Intelligence
1 48 (13.30%) PostgreSQL
2 23 (6.37%) SQL Server
3 19 (5.26%) MySQL
4 13 (3.60%) NoSQL
5 12 (3.32%) MongoDB
6 11 (3.05%) BusinessObjects
6 11 (3.05%) BusinessObjects Web Intelligence
6 11 (3.05%) Oracle Database
6 11 (3.05%) Relational Database
6 11 (3.05%) SAP BW
6 11 (3.05%) SAP HANA
7 9 (2.49%) Hadoop
8 7 (1.94%) Apache Cassandra
8 7 (1.94%) Big Data
9 6 (1.66%) Oracle Database 12c
9 6 (1.66%) SQL Server Reporting Services
10 5 (1.39%) Amazon RDS
10 5 (1.39%) RDBMS
10 5 (1.39%) Redis
11 4 (1.11%) DataStax
Development Applications
1 104 (28.81%) Jenkins
2 55 (15.24%) Git (software)
3 39 (10.80%) JIRA
4 35 (9.70%) GitLab
5 18 (4.99%) TeamCity
6 12 (3.32%) eggPlant
6 12 (3.32%) Locust
6 12 (3.32%) NUnit
7 11 (3.05%) Selenium
8 9 (2.49%) Cucumber
9 8 (2.22%) Visual Studio
10 7 (1.94%) Atlassian Bamboo
10 7 (1.94%) Maven
10 7 (1.94%) REST Assured
10 7 (1.94%) SoapUI
11 6 (1.66%) Sonatype Nexus
11 6 (1.66%) Subversion
12 5 (1.39%) Artifactory
12 5 (1.39%) Bitbucket
13 4 (1.11%) Gradle
General
1 135 (37.40%) Finance
2 31 (8.59%) Banking
3 17 (4.71%) Games
4 15 (4.16%) Advertising
5 13 (3.60%) Back Office
6 10 (2.77%) Front Office
6 10 (2.77%) Investment Banking
7 6 (1.66%) Law
7 6 (1.66%) Legal
8 3 (0.83%) Financial Institution
8 3 (0.83%) Marketing
8 3 (0.83%) Public Sector
8 3 (0.83%) Retail
8 3 (0.83%) Telecoms
9 2 (0.55%) French Language
9 2 (0.55%) Police
9 2 (0.55%) Publishing
10 1 (0.28%) Brand Awareness
10 1 (0.28%) Local Government
Job Titles
1 93 (25.76%) DevOps Engineer
2 85 (23.55%) Developer
3 37 (10.25%) AWS Engineer
3 37 (10.25%) Python Developer
4 34 (9.42%) AWS DevOps
5 30 (8.31%) Analyst
5 30 (8.31%) AWS DevOps Engineer
6 27 (7.48%) Senior DevOps
6 27 (7.48%) Senior DevOps Engineer
7 21 (5.82%) Linux Engineer
8 20 (5.54%) Site Reliability Engineer
9 18 (4.99%) Administrator
9 18 (4.99%) Software Engineer
10 17 (4.71%) Python Engineer
11 16 (4.43%) Java Developer
11 16 (4.43%) Junior
11 16 (4.43%) Senior Developer
11 16 (4.43%) Site Engineer
12 15 (4.16%) Infrastructure Engineer
12 15 (4.16%) Kubernetes Engineer
Libraries, Frameworks & Software Standards
1 34 (9.42%) Django
2 31 (8.59%) Pandas
3 24 (6.65%) .NET
4 15 (4.16%) .NET Core
5 14 (3.88%) Node.js
6 13 (3.60%) FIX Protocol
7 12 (3.32%) Sensu
8 11 (3.05%) SAP Basis
8 11 (3.05%) Spring
8 11 (3.05%) Web Services
9 10 (2.77%) AngularJS
9 10 (2.77%) HTML
9 10 (2.77%) Kafka
9 10 (2.77%) React
10 9 (2.49%) Elastic Stack
10 9 (2.49%) YAML
11 8 (2.22%) JMS
11 8 (2.22%) LDAP
11 8 (2.22%) Spring Boot
12 7 (1.94%) Flask
Miscellaneous
1 38 (10.53%) Equities
2 29 (8.03%) Analytical Skills
3 24 (6.65%) Fixed Income
4 16 (4.43%) Public Cloud
5 15 (4.16%) Data Structures
6 14 (3.88%) Hedge funds
7 13 (3.60%) Data Centre
8 11 (3.05%) Algorithms
8 11 (3.05%) Foreign Exchange (FX)
8 11 (3.05%) Linux Command Line
9 10 (2.77%) Derivative
9 10 (2.77%) Management Information System
9 10 (2.77%) Replication
10 8 (2.22%) Virtual Team
11 7 (1.94%) Clustering
12 6 (1.66%) Robotics
13 5 (1.39%) Cyber Kill Chain
14 4 (1.11%) Reference Data
15 2 (0.55%) Enterprise Software
15 2 (0.55%) Exotic Derivative
Operating Systems
1 113 (31.30%) Windows
2 59 (16.34%) Unix
3 28 (7.76%) Red Hat Enterprise Linux
4 24 (6.65%) Windows Server
5 21 (5.82%) CentOS
5 21 (5.82%) Ubuntu
6 12 (3.32%) Mac OS
7 5 (1.39%) Fedora
7 5 (1.39%) Solaris
7 5 (1.39%) Windows XP
8 4 (1.11%) Debian
8 4 (1.11%) Windows 10
9 3 (0.83%) Android
9 3 (0.83%) Windows Server 2008
9 3 (0.83%) Windows Server 2012
10 2 (0.55%) Windows Server 2019
11 1 (0.28%) Apple iOS
11 1 (0.28%) Robot Operating System
Processes & Methodologies
1 149 (41.27%) DevOps
2 110 (30.47%) Agile Software Development
3 57 (15.79%) TDD
4 55 (15.24%) Fintech
5 49 (13.57%) Software Engineering
6 45 (12.47%) Infrastructure as Code
7 41 (11.36%) Configuration Management
8 40 (11.08%) SDLC
9 37 (10.25%) Site Reliability Engineering
10 36 (9.97%) BDD
11 34 (9.42%) Test Automation
12 29 (8.03%) Computer Science
13 27 (7.48%) Continuous Integration
13 27 (7.48%) Pair Programming
14 25 (6.93%) Infrastructure Engineering
15 24 (6.65%) Deployment Automation
15 24 (6.65%) Problem-Solving
16 22 (6.09%) ITIL
17 19 (5.26%) Open Source
17 19 (5.26%) Project Delivery
Programming Languages
1 165 (45.71%) Python
2 85 (23.55%) SQL
3 75 (20.78%) Java
4 56 (15.51%) Bash Shell
5 52 (14.40%) C++
6 39 (10.80%) C#
7 38 (10.53%) JavaScript
8 32 (8.86%) PowerShell
9 25 (6.93%) PHP
10 16 (4.43%) Shell Script
11 14 (3.88%) Go
12 13 (3.60%) Ruby
13 11 (3.05%) Perl
14 9 (2.49%) C
15 5 (1.39%) Groovy
15 5 (1.39%) TypeScript
16 4 (1.11%) Java 8
17 3 (0.83%) Korn
17 3 (0.83%) VBA
18 2 (0.55%) PL/SQL
Qualifications
1 37 (10.25%) Degree
2 15 (4.16%) Cisco Certification
3 12 (3.32%) Computer Science Degree
4 7 (1.94%) (ISC)2 CCSP
4 7 (1.94%) Master's Degree
5 6 (1.66%) CCSP
5 6 (1.66%) CISM
5 6 (1.66%) CISSP
5 6 (1.66%) Microsoft Certification
6 5 (1.39%) CCNP
6 5 (1.39%) CREST Certified
6 5 (1.39%) GCFA
6 5 (1.39%) GCIA
6 5 (1.39%) GCIH
6 5 (1.39%) ITIL Certification
7 4 (1.11%) AWS Certification
7 4 (1.11%) CCNA
7 4 (1.11%) Numerate Degree
8 3 (0.83%) Linux+ Certification
8 3 (0.83%) MCSE
Quality Assurance & Compliance
1 16 (4.43%) QA
2 8 (2.22%) ISO/IEC 27001
3 6 (1.66%) SLA
4 5 (1.39%) COBIT
4 5 (1.39%) Cyber Essentials
4 5 (1.39%) Cyber Essentials PLUS
4 5 (1.39%) GDPR
4 5 (1.39%) NIST
4 5 (1.39%) PCI DSS
5 1 (0.28%) ISO/IEC 27002 (supersedes ISO/IEC 17799)
5 1 (0.28%) WCAG
System Software
1 101 (27.98%) Docker
2 37 (10.25%) VMware Infrastructure
3 35 (9.70%) Active Directory
4 17 (4.71%) Hyper-V
5 5 (1.39%) vSphere
6 3 (0.83%) Apache ZooKeeper
6 3 (0.83%) StorNext
6 3 (0.83%) Xsan
7 2 (0.55%) Oracle RAC
7 2 (0.55%) Virtual Desktop
7 2 (0.55%) VirtualBox
8 1 (0.28%) HDFS
8 1 (0.28%) Virtual Machines
8 1 (0.28%) Virtual Servers
Systems Management
1 102 (28.25%) Kubernetes
2 95 (26.32%) Puppet
3 94 (26.04%) Ansible
4 90 (24.93%) Terraform
5 51 (14.13%) Opscode Chef
6 16 (4.43%) Kibana
7 15 (4.16%) Grafana
7 15 (4.16%) ZABBIX
8 14 (3.88%) Prometheus
9 10 (2.77%) Nagios
10 8 (2.22%) Salt
11 6 (1.66%) ITRS Geneos
12 5 (1.39%) Control-M
12 5 (1.39%) CSIRT
12 5 (1.39%) HAProxy
13 4 (1.11%) Microsoft Data Protection Manager
13 4 (1.11%) Microsoft Intune
13 4 (1.11%) Packer
13 4 (1.11%) Rancher
13 4 (1.11%) SCDPM
Vendors
1 46 (12.74%) VMware
2 45 (12.47%) Microsoft
3 31 (8.59%) Cisco
4 30 (8.31%) Oracle
5 20 (5.54%) Red Hat
6 13 (3.60%) Splunk
7 12 (3.32%) HP
8 11 (3.05%) Google
8 11 (3.05%) SAP
9 10 (2.77%) Fortinet
10 8 (2.22%) SolarWinds
11 7 (1.94%) Juniper
12 6 (1.66%) EMC
12 6 (1.66%) Informatica
12 6 (1.66%) Palo Alto
12 6 (1.66%) Salesforce.com
12 6 (1.66%) Sybase
13 5 (1.39%) Bloomberg
14 4 (1.11%) Apple
14 4 (1.11%) CheckPoint