Period
to 16 April 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 16 April 2021 with a comparison to the same period in the previous 2 years.

Linux
Central London > City of London
6 months to
16 Apr 2021
Same period 2020 Same period 2019
Rank 29 19 19
Rank change year-on-year -10 0 -2
Permanent jobs citing Linux 394 764 943
As % of all permanent jobs advertised in the City of London 8.04% 9.10% 9.25%
As % of the Operating Systems category 53.32% 44.63% 41.18%
Number of salaries quoted 347 642 823
10th Percentile £45,000 £47,500 £41,400
25th Percentile £53,750 £57,500 £52,500
Median annual salary (50th Percentile) £72,500 £75,000 £72,500
Median % change year-on-year -3.33% +3.45% +7.41%
75th Percentile £91,250 £88,750 £85,000
90th Percentile £105,500 £115,000 £102,500
Central London median annual salary £71,875 £70,000 £70,000
% change year-on-year +2.68% - +7.69%

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 739 1,712 2,290
As % of all permanent IT jobs advertised in the City of London 15.07% 20.40% 22.46%
Number of salaries quoted 648 1,495 2,055
10th Percentile £41,250 £29,386 £30,000
25th Percentile £48,750 £42,500 £42,500
Median annual salary (50th Percentile) £65,000 £62,500 £60,000
Median % change year-on-year +4.00% +4.17% -
75th Percentile £85,000 £78,750 £77,500
90th Percentile £97,500 £93,750 £92,500
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 16 April 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 16 April 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 +10 2 £45,000 -35.71%
Linux
Central London

For the 6 months to 16 April 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.

1 164 (41.62%) DevOps
2 158 (40.10%) Finance
3 157 (39.85%) Python
4 145 (36.80%) AWS
5 124 (31.47%) Windows
6 116 (29.44%) Docker
7 114 (28.93%) Kubernetes
8 105 (26.65%) Jenkins
9 104 (26.40%) SQL
10 103 (26.14%) Agile Software Development
11 102 (25.89%) Terraform
12 101 (25.63%) Azure
13 96 (24.37%) Ansible
14 84 (21.32%) Unix
14 84 (21.32%) Puppet
15 73 (18.53%) Bash Shell
16 69 (17.51%) Java
17 56 (14.21%) C++
18 54 (13.71%) Infrastructure as Code
19 53 (13.45%) Git (software)
20 52 (13.20%) VMware
21 51 (12.94%) Banking
22 50 (12.69%) SDLC
23 46 (11.68%) Microsoft
24 45 (11.42%) VMware Infrastructure
24 45 (11.42%) PowerShell
25 44 (11.17%) TDD
26 41 (10.41%) Fintech
27 40 (10.15%) PostgreSQL
28 39 (9.90%) Red Hat Enterprise Linux

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 11 (2.79%) Apache
2 10 (2.54%) Apache Airflow
3 8 (2.03%) Elasticsearch
4 6 (1.52%) SharePoint
5 4 (1.02%) IIS
5 4 (1.02%) nginx
5 4 (1.02%) WebLogic
5 4 (1.02%) WebSphere
6 3 (0.76%) Confluence
6 3 (0.76%) OpenStack
7 2 (0.51%) JBoss
7 2 (0.51%) MS Exchange
7 2 (0.51%) Tomcat
8 1 (0.25%) Apache TomEE
8 1 (0.25%) CMS
8 1 (0.25%) ejabberd
8 1 (0.25%) Ethereum
8 1 (0.25%) Exchange Server 2003
8 1 (0.25%) Red Hat Fuse
Applications
1 9 (2.28%) Microsoft Office
2 2 (0.51%) Microsoft Excel
Business Applications
1 1 (0.25%) FINCAD Analytics
1 1 (0.25%) IntelliMatch
1 1 (0.25%) Temenos T24
Cloud Services
1 145 (36.80%) AWS
2 101 (25.63%) Azure
3 25 (6.35%) GCP
4 17 (4.31%) Microsoft 365
5 16 (4.06%) Amazon EC2
6 15 (3.81%) IaaS
7 14 (3.55%) Datadog
8 13 (3.30%) GitHub
8 13 (3.30%) Serverless
9 12 (3.05%) AWS Lambda
9 12 (3.05%) PaaS
10 11 (2.79%) Amazon S3
10 11 (2.79%) Azure Active Directory
11 10 (2.54%) SaaS
12 9 (2.28%) AWS CloudFormation
13 8 (2.03%) OpenShift
14 5 (1.27%) Amazon ECS
14 5 (1.27%) Amazon ELB
15 4 (1.02%) Azure Data Factory
15 4 (1.02%) Power Platform
Communications & Networking
1 35 (8.88%) Firewall
2 22 (5.58%) TCP/IP
3 17 (4.31%) SAN
4 14 (3.55%) WAN
5 11 (2.79%) LAN
5 11 (2.79%) Multicast
6 10 (2.54%) BGP
6 10 (2.54%) NAS
7 9 (2.28%) SSH
8 8 (2.03%) DNS
9 7 (1.78%) Network Security
9 7 (1.78%) OSPF
9 7 (1.78%) VPN
10 6 (1.52%) iSCSI
11 5 (1.27%) SSL
11 5 (1.27%) tcpdump
12 4 (1.02%) Cisco IOS
12 4 (1.02%) DHCP
12 4 (1.02%) MPLS
12 4 (1.02%) VLAN
Database & Business Intelligence
1 40 (10.15%) PostgreSQL
2 34 (8.63%) SQL Server
3 20 (5.08%) MySQL
4 13 (3.30%) NoSQL
5 11 (2.79%) Amazon RDS
5 11 (2.79%) Hadoop
5 11 (2.79%) SQL Server Reporting Services
6 10 (2.54%) MongoDB
7 9 (2.28%) Data Warehouse
7 9 (2.28%) Oracle Database
7 9 (2.28%) Relational Database
8 8 (2.03%) Big Data
8 8 (2.03%) SQL Server Integration Services
9 7 (1.78%) Apache Cassandra
10 6 (1.52%) BusinessObjects
10 6 (1.52%) BusinessObjects Web Intelligence
10 6 (1.52%) SAP BW
10 6 (1.52%) SAP HANA
11 5 (1.27%) Blockchain
11 5 (1.27%) Oracle Database 12c
Development Applications
1 105 (26.65%) Jenkins
2 53 (13.45%) Git (software)
3 33 (8.38%) GitLab
4 28 (7.11%) TeamCity
5 24 (6.09%) JIRA
6 15 (3.81%) Atlassian Bamboo
7 13 (3.30%) Selenium
8 12 (3.05%) Cucumber
8 12 (3.05%) NUnit
8 12 (3.05%) Octopus Deploy
9 11 (2.79%) Artifactory
9 11 (2.79%) Bitbucket
9 11 (2.79%) REST Assured
9 11 (2.79%) SoapUI
10 7 (1.78%) Travis CI
11 6 (1.52%) Maven
11 6 (1.52%) Subversion
12 5 (1.27%) Gradle
12 5 (1.27%) Visual Studio
13 4 (1.02%) Sonatype Nexus
General
1 158 (40.10%) Finance
2 51 (12.94%) Banking
3 23 (5.84%) Games
4 20 (5.08%) Advertising
5 17 (4.31%) Back Office
6 12 (3.05%) Telecoms
7 11 (2.79%) Front Office
8 8 (2.03%) Investment Banking
8 8 (2.03%) Legal
9 5 (1.27%) Law
10 3 (0.76%) Public Sector
10 3 (0.76%) Retail
10 3 (0.76%) Retail Banking
10 3 (0.76%) Wholesale Banking
11 2 (0.51%) Financial Institution
12 1 (0.25%) Brand Awareness
12 1 (0.25%) Electronics
12 1 (0.25%) Manufacturing
12 1 (0.25%) Marketing
12 1 (0.25%) Police
Job Titles
1 104 (26.40%) DevOps Engineer
2 91 (23.10%) Developer
3 38 (9.64%) Python Developer
4 33 (8.38%) Senior DevOps
4 33 (8.38%) Senior DevOps Engineer
5 26 (6.60%) Analyst
6 24 (6.09%) Senior Developer
7 23 (5.84%) AWS Engineer
8 22 (5.58%) Linux Engineer
9 19 (4.82%) AWS DevOps
10 18 (4.57%) Applications Support
10 18 (4.57%) DevOps Engineer - Fintech
10 18 (4.57%) Java Developer
11 17 (4.31%) AWS DevOps Engineer
11 17 (4.31%) Infrastructure Engineer
12 15 (3.81%) .NET Developer
12 15 (3.81%) Data Engineer
12 15 (3.81%) QA Engineer
13 14 (3.55%) Junior
13 14 (3.55%) Systems Engineer
Libraries, Frameworks & Software Standards
1 34 (8.63%) .NET
2 25 (6.35%) Django
3 22 (5.58%) Pandas
4 20 (5.08%) FIX Protocol
5 19 (4.82%) Kafka
6 18 (4.57%) .NET Core
6 18 (4.57%) Node.js
6 18 (4.57%) Web Services
7 17 (4.31%) Elastic Stack
7 17 (4.31%) XML
8 12 (3.05%) React
9 11 (2.79%) Gherkin
9 11 (2.79%) Spring
10 10 (2.54%) Flask
10 10 (2.54%) Spring Boot
11 9 (2.28%) JSON
12 8 (2.03%) AngularJS
13 7 (1.78%) HTML
14 6 (1.52%) JMS
14 6 (1.52%) SAP Basis
Miscellaneous
1 28 (7.11%) Equities
2 26 (6.60%) Fixed Income
3 23 (5.84%) Data Structures
4 22 (5.58%) Analytical Skills
5 16 (4.06%) Foreign Exchange (FX)
6 15 (3.81%) Algorithms
6 15 (3.81%) Derivative
6 15 (3.81%) Greenfield Project
7 14 (3.55%) Hedge funds
8 10 (2.54%) Public Cloud
8 10 (2.54%) Replication
9 9 (2.28%) Data Centre
9 9 (2.28%) Linux Command Line
9 9 (2.28%) Management Information System
10 7 (1.78%) Clustering
11 6 (1.52%) Hybrid Cloud
12 5 (1.27%) OTC Derivatives
13 4 (1.02%) Cloud Native
13 4 (1.02%) Private Cloud
13 4 (1.02%) Self-Motivation
Operating Systems
1 124 (31.47%) Windows
2 84 (21.32%) Unix
3 39 (9.90%) Red Hat Enterprise Linux
4 35 (8.88%) CentOS
5 30 (7.61%) Ubuntu
6 29 (7.36%) Windows Server
7 13 (3.30%) Mac OS
8 8 (2.03%) Windows 10
9 4 (1.02%) Android
9 4 (1.02%) Windows Server 2008
10 2 (0.51%) Apple iOS
10 2 (0.51%) CoreOS
10 2 (0.51%) Windows Server 2019
10 2 (0.51%) zOS
11 1 (0.25%) Debian
11 1 (0.25%) Robot Operating System
11 1 (0.25%) Windows 7
Processes & Methodologies
1 164 (41.62%) DevOps
2 103 (26.14%) Agile Software Development
3 54 (13.71%) Infrastructure as Code
4 50 (12.69%) SDLC
5 44 (11.17%) TDD
6 41 (10.41%) Fintech
7 38 (9.64%) Software Engineering
8 37 (9.39%) Test Automation
9 36 (9.14%) Continuous Integration
10 33 (8.38%) Configuration Management
11 30 (7.61%) Low Latency
12 28 (7.11%) Problem-Solving
13 27 (6.85%) Infrastructure Engineering
13 27 (6.85%) Site Reliability Engineering
14 25 (6.35%) Computer Science
14 25 (6.35%) Continuous Delivery
15 23 (5.84%) BDD
15 23 (5.84%) Deployment Automation
16 20 (5.08%) Infrastructure Automation
16 20 (5.08%) Microservices
Programming Languages
1 157 (39.85%) Python
2 104 (26.40%) SQL
3 73 (18.53%) Bash Shell
4 69 (17.51%) Java
5 56 (14.21%) C++
6 45 (11.42%) PowerShell
7 27 (6.85%) C#
7 27 (6.85%) JavaScript
8 19 (4.82%) Shell Script
9 15 (3.81%) Perl
10 12 (3.05%) PHP
11 10 (2.54%) C
12 7 (1.78%) Ruby
13 5 (1.27%) Go
14 4 (1.02%) Java 8
14 4 (1.02%) R
14 4 (1.02%) TypeScript
15 3 (0.76%) Korn
16 2 (0.51%) Haskell
16 2 (0.51%) JCL
Qualifications
1 32 (8.12%) Degree
2 14 (3.55%) Computer Science Degree
3 13 (3.30%) Cisco Certification
4 12 (3.05%) Security Cleared
5 11 (2.79%) SC Cleared
6 7 (1.78%) CCNA
7 6 (1.52%) ITIL Certification
8 5 (1.27%) CCNP
9 4 (1.02%) ITIL Foundation Certificate
9 4 (1.02%) Microsoft Certification
10 3 (0.76%) CCIE
10 3 (0.76%) EnCE
10 3 (0.76%) GCFA
10 3 (0.76%) GCFE
10 3 (0.76%) GREM
10 3 (0.76%) Linux+ Certification
10 3 (0.76%) Master's Degree
10 3 (0.76%) MCSE
11 2 (0.51%) CEH
11 2 (0.51%) CISSP
Quality Assurance & Compliance
1 34 (8.63%) QA
2 9 (2.28%) ISO/IEC 27001
3 6 (1.52%) Cyber Essentials
3 6 (1.52%) Cyber Essentials PLUS
4 4 (1.02%) PCI DSS
5 2 (0.51%) SLA
6 1 (0.25%) WCAG
System Software
1 116 (29.44%) Docker
2 45 (11.42%) VMware Infrastructure
3 23 (5.84%) Active Directory
4 20 (5.08%) Hyper-V
5 9 (2.28%) vSphere
6 6 (1.52%) Apache ZooKeeper
6 6 (1.52%) StorNext
6 6 (1.52%) Xsan
7 2 (0.51%) Oracle RAC
7 2 (0.51%) RACF
7 2 (0.51%) Time Sharing Option
7 2 (0.51%) Virtual Machines
8 1 (0.25%) iptables
8 1 (0.25%) Kamailio
8 1 (0.25%) KVM
8 1 (0.25%) Postfix
8 1 (0.25%) QEMU
8 1 (0.25%) Virtual Servers
8 1 (0.25%) Xen
8 1 (0.25%) XenApp
Systems Management
1 114 (28.93%) Kubernetes
2 102 (25.89%) Terraform
3 96 (24.37%) Ansible
4 84 (21.32%) Puppet
5 35 (8.88%) Opscode Chef
6 12 (3.05%) Kibana
7 11 (2.79%) Rancher
8 10 (2.54%) Prometheus
9 8 (2.03%) Packer
10 6 (1.52%) Istio
10 6 (1.52%) Salt
10 6 (1.52%) ZABBIX
11 5 (1.27%) HAProxy
11 5 (1.27%) ITRS Geneos
11 5 (1.27%) Microsoft Data Protection Manager
11 5 (1.27%) Microsoft Intune
11 5 (1.27%) Nagios
11 5 (1.27%) SCDPM
12 4 (1.02%) Control-M
12 4 (1.02%) Failover Clustering
Vendors
1 52 (13.20%) VMware
2 46 (11.68%) Microsoft
3 31 (7.87%) Cisco
4 27 (6.85%) Oracle
5 23 (5.84%) Red Hat
6 13 (3.30%) HP
7 12 (3.05%) Juniper
8 9 (2.28%) SAP
8 9 (2.28%) SonicWALL
9 8 (2.03%) Dell
9 8 (2.03%) IBM
9 8 (2.03%) Palo Alto
9 8 (2.03%) Supermicro
9 8 (2.03%) Sybase
10 7 (1.78%) Fortinet
10 7 (1.78%) Splunk
11 6 (1.52%) Fidessa
11 6 (1.52%) Google
11 6 (1.52%) Isilon
11 6 (1.52%) SolarWinds