Period
to 27 October 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 27 October 2021 with a comparison to the same period in the previous 2 years.

Linux
Central London > City of London
6 months to
27 Oct 2021
Same period 2020 Same period 2019
Rank 38 24 21
Rank change year-on-year -14 -3 0
Permanent jobs citing Linux 378 342 946
As % of all permanent jobs advertised in the City of London 6.29% 9.35% 9.50%
As % of the Operating Systems category 42.14% 45.66% 41.31%
Number of salaries quoted 349 304 795
10th Percentile £42,500 £42,875 £45,500
25th Percentile £56,250 £56,250 £57,500
Median annual salary (50th Percentile) £75,000 £70,000 £75,000
Median % change year-on-year +7.14% -6.67% +11.11%
75th Percentile £91,250 £80,000 £93,750
90th Percentile £108,750 £95,000 £116,500
Central London median annual salary £75,000 £70,000 £72,500
% change year-on-year +7.14% -3.45% +7.41%

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 897 749 2,290
As % of all permanent IT jobs advertised in the City of London 14.93% 20.49% 23.01%
Number of salaries quoted 818 673 1,967
10th Percentile £33,750 £32,550 £28,500
25th Percentile £46,250 £46,250 £41,750
Median annual salary (50th Percentile) £65,000 £65,000 £60,000
Median % change year-on-year - +8.33% -
75th Percentile £85,000 £77,500 £81,250
90th Percentile £100,000 £91,450 £97,500
Central London median annual salary £60,000 £65,000 £60,000
% change year-on-year -7.69% +8.33% -

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 27 October 2021.

Salary histogram for Linux in the City of London

For the 6 months to 27 October 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.

1 191 (50.53%) AWS
2 177 (46.83%) Python
3 165 (43.65%) DevOps
4 139 (36.77%) Docker
5 137 (36.24%) Kubernetes
6 133 (35.19%) Terraform
7 130 (34.39%) Finance
8 110 (29.10%) Infrastructure as Code
9 107 (28.31%) Windows
10 96 (25.40%) Unix
11 94 (24.87%) Java
12 87 (23.02%) Bash Shell
13 82 (21.69%) Ansible
14 81 (21.43%) Jenkins
14 81 (21.43%) Azure
15 78 (20.63%) Agile Software Development
16 75 (19.84%) SQL
17 69 (18.25%) Puppet
18 63 (16.67%) GCP
19 53 (14.02%) PowerShell
20 46 (12.17%) Configuration Management
21 45 (11.90%) Git (software)
22 43 (11.38%) Site Reliability Engineering
22 43 (11.38%) Banking
23 41 (10.85%) Fintech
24 40 (10.58%) JavaScript
25 39 (10.32%) Microsoft
25 39 (10.32%) Social Skills
26 38 (10.05%) Software Engineering
27 34 (8.99%) Infrastructure Engineering

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 12 (3.17%) OpenStack
2 11 (2.91%) nginx
3 9 (2.38%) Confluence
3 9 (2.38%) Elasticsearch
4 7 (1.85%) Apache Spark
5 5 (1.32%) SharePoint
6 4 (1.06%) Apache
7 3 (0.79%) IIS
7 3 (0.79%) MS Exchange
7 3 (0.79%) Oracle Coherence
7 3 (0.79%) SAS
8 2 (0.53%) Apache Airflow
8 2 (0.53%) Cloud Foundry
8 2 (0.53%) CMS
8 2 (0.53%) WordPress
9 1 (0.26%) Ethereum
9 1 (0.26%) Exchange Server 2010
9 1 (0.26%) Oracle Workflow
9 1 (0.26%) Skype for Business
9 1 (0.26%) WebSphere
Applications
1 2 (0.53%) Microsoft Office
2 1 (0.26%) Microsoft Excel
2 1 (0.26%) Microsoft PowerPoint
Business Applications
1 3 (0.79%) Distributed Ledger
2 2 (0.53%) IntelliMatch
3 1 (0.26%) Bloomberg TOMS
3 1 (0.26%) Oracle EBS
3 1 (0.26%) Oracle EBS R12
3 1 (0.26%) Payment Gateway
3 1 (0.26%) Salerio
Cloud Services
1 191 (50.53%) AWS
2 81 (21.43%) Azure
3 63 (16.67%) GCP
4 32 (8.47%) Amazon EC2
5 30 (7.94%) Serverless
6 17 (4.50%) AWS CloudFormation
6 17 (4.50%) AWS Lambda
7 16 (4.23%) IaaS
8 15 (3.97%) SaaS
9 12 (3.17%) Virtual Private Cloud
10 10 (2.65%) Amazon ECS
10 10 (2.65%) Amazon S3
10 10 (2.65%) GitHub
10 10 (2.65%) Microsoft 365
10 10 (2.65%) PaaS
11 5 (1.32%) AWS CodePipeline
11 5 (1.32%) OpenShift
12 4 (1.06%) Amazon CloudWatch
12 4 (1.06%) Amazon EMR
12 4 (1.06%) Amazon Kinesis
Communications & Networking
1 23 (6.08%) Firewall
2 15 (3.97%) Network Security
3 11 (2.91%) DNS
3 11 (2.91%) TCP/IP
4 9 (2.38%) LAN
4 9 (2.38%) VPN
4 9 (2.38%) WAN
5 6 (1.59%) SAN
6 5 (1.32%) HTTP
7 4 (1.06%) DHCP
7 4 (1.06%) Wi-Fi
8 2 (0.53%) HTTPS
8 2 (0.53%) Telnet
8 2 (0.53%) VLAN
8 2 (0.53%) WebEx
8 2 (0.53%) Wireless
8 2 (0.53%) Wireshark
9 1 (0.26%) Cisco IOS
9 1 (0.26%) Remote Desktop
9 1 (0.26%) SD-WAN
Database & Business Intelligence
1 18 (4.76%) Relational Database
2 13 (3.44%) SQL Server
3 12 (3.17%) Big Data
4 11 (2.91%) KDB
4 11 (2.91%) MySQL
5 10 (2.65%) Apache Cassandra
5 10 (2.65%) MongoDB
5 10 (2.65%) NoSQL
6 8 (2.12%) Amazon RDS
6 8 (2.12%) Hadoop
6 8 (2.12%) Oracle Database
6 8 (2.12%) PostgreSQL
7 5 (1.32%) Blockchain
7 5 (1.32%) Data Warehouse
8 4 (1.06%) Amazon Redshift
8 4 (1.06%) ArangoDB
8 4 (1.06%) InfluxDB
9 2 (0.53%) HBase
9 2 (0.53%) SQL Server Integration Services
9 2 (0.53%) SQL Server Reporting Services
Development Applications
1 81 (21.43%) Jenkins
2 45 (11.90%) Git (software)
3 25 (6.61%) JIRA
4 19 (5.03%) GitLab
5 16 (4.23%) TeamCity
6 15 (3.97%) Bitbucket
7 13 (3.44%) Selenium
8 9 (2.38%) Atlassian Bamboo
8 9 (2.38%) Cucumber
8 9 (2.38%) Maven
8 9 (2.38%) REST Assured
9 7 (1.85%) Octopus Deploy
10 5 (1.32%) Sonatype Nexus
11 4 (1.06%) Gradle
11 4 (1.06%) IntelliJ
11 4 (1.06%) Jasmine
11 4 (1.06%) JUnit
11 4 (1.06%) Mocha
11 4 (1.06%) SoapUI
12 3 (0.79%) Eclipse
General
1 130 (34.39%) Finance
2 43 (11.38%) Banking
3 39 (10.32%) Social Skills
4 27 (7.14%) Front Office
5 25 (6.61%) Advertising
6 17 (4.50%) Retail
7 14 (3.70%) Investment Banking
8 11 (2.91%) Law
9 8 (2.12%) Analytical Skills
9 8 (2.12%) Telecoms
10 6 (1.59%) Back Office
10 6 (1.59%) Financial Institution
10 6 (1.59%) Games
10 6 (1.59%) Inclusion and Diversity
11 5 (1.32%) Marketing
12 4 (1.06%) Legal
13 3 (0.79%) International Banking
13 3 (0.79%) Public Sector
14 2 (0.53%) Presentation Skills
15 1 (0.26%) Documentation Skills
Job Titles
1 104 (27.51%) DevOps Engineer
2 62 (16.40%) Developer
3 44 (11.64%) AWS Engineer
4 34 (8.99%) Linux Engineer
5 33 (8.73%) Security Engineer
6 29 (7.67%) Java Developer
7 27 (7.14%) AWS DevOps
8 26 (6.88%) AWS DevOps Engineer
9 24 (6.35%) Junior
9 24 (6.35%) Senior Developer
10 23 (6.08%) Infrastructure Engineer
10 23 (6.08%) Site Reliability Engineer
11 22 (5.82%) Senior DevOps
12 21 (5.56%) Analyst
12 21 (5.56%) Senior DevOps Engineer
13 20 (5.29%) Architect
13 20 (5.29%) Linux DevOps Engineer
13 20 (5.29%) Linux/Unix DevOps
14 19 (5.03%) Platform Engineer
15 16 (4.23%) Cloud Engineer
Libraries, Frameworks & Software Standards
1 24 (6.35%) React
2 23 (6.08%) Kafka
3 22 (5.82%) AngularJS
4 21 (5.56%) FIX Protocol
5 19 (5.03%) Web Services
6 16 (4.23%) HTML
7 15 (3.97%) Spring
8 14 (3.70%) HTML5
9 13 (3.44%) Elastic Stack
9 13 (3.44%) REST
10 12 (3.17%) JSON
11 10 (2.65%) XML
12 9 (2.38%) CSS
12 9 (2.38%) Gherkin
12 9 (2.38%) RESTful
13 8 (2.12%) .NET
14 6 (1.59%) Sass
15 5 (1.32%) Ajax
16 4 (1.06%) Ext JS
16 4 (1.06%) Middleware
Miscellaneous
1 18 (4.76%) Cloud Native
2 15 (3.97%) Fixed Income
3 13 (3.44%) Data Centre
3 13 (3.44%) Equities
4 11 (2.91%) Management Information System
5 10 (2.65%) Derivative
5 10 (2.65%) Enterprise Software
6 8 (2.12%) Self-Motivation
7 7 (1.85%) Public Cloud
8 6 (1.59%) Enterprise Storage
8 6 (1.59%) Foreign Exchange (FX)
9 5 (1.32%) Algorithms
9 5 (1.32%) Data Protection Act
9 5 (1.32%) Data Structures
9 5 (1.32%) Greenfield Project
9 5 (1.32%) Hedge funds
9 5 (1.32%) Hybrid Cloud
10 4 (1.06%) Enterprise Cloud
10 4 (1.06%) SWIFT
10 4 (1.06%) Video Conferencing
Operating Systems
1 107 (28.31%) Windows
2 96 (25.40%) Unix
3 25 (6.61%) Ubuntu
4 21 (5.56%) Red Hat Enterprise Linux
5 19 (5.03%) Windows Server
6 17 (4.50%) CentOS
7 7 (1.85%) CoreOS
8 5 (1.32%) Mac OS X
9 4 (1.06%) Solaris
10 3 (0.79%) Windows 10
10 3 (0.79%) Windows Server 2003
10 3 (0.79%) Windows XP
11 2 (0.53%) Mac OS
11 2 (0.53%) SUSE
11 2 (0.53%) Windows 7
11 2 (0.53%) Windows Server 2016
12 1 (0.26%) Android
12 1 (0.26%) Apple iOS
12 1 (0.26%) Windows Server 2008
Processes & Methodologies
1 165 (43.65%) DevOps
2 110 (29.10%) Infrastructure as Code
3 78 (20.63%) Agile Software Development
4 46 (12.17%) Configuration Management
5 43 (11.38%) Site Reliability Engineering
6 41 (10.85%) Fintech
7 38 (10.05%) Software Engineering
8 34 (8.99%) Infrastructure Engineering
9 28 (7.41%) Problem-Solving
10 26 (6.88%) Low Latency
11 25 (6.61%) Multithreading
12 24 (6.35%) SDLC
13 22 (5.82%) Microservices
13 22 (5.82%) Test Automation
14 21 (5.56%) Infrastructure Automation
15 20 (5.29%) Workflow
16 19 (5.03%) Migration
17 18 (4.76%) Electronic Trading
17 18 (4.76%) OO
18 17 (4.50%) Continuous Integration
Programming Languages
1 177 (46.83%) Python
2 94 (24.87%) Java
3 87 (23.02%) Bash Shell
4 75 (19.84%) SQL
5 53 (14.02%) PowerShell
6 40 (10.58%) JavaScript
7 25 (6.61%) C++
8 20 (5.29%) C#
9 17 (4.50%) Shell Script
10 16 (4.23%) Go
10 16 (4.23%) Perl
11 11 (2.91%) Scala
12 8 (2.12%) C
13 7 (1.85%) TypeScript
14 6 (1.59%) Ruby
14 6 (1.59%) Rust
15 5 (1.32%) R
16 4 (1.06%) ES6
16 4 (1.06%) PHP
17 3 (0.79%) PL/SQL
Qualifications
1 24 (6.35%) Degree
2 12 (3.17%) Cisco Certification
3 9 (2.38%) CCNA
4 8 (2.12%) Master's Degree
5 5 (1.32%) CCNP
6 4 (1.06%) AWS Certification
6 4 (1.06%) CISSP
6 4 (1.06%) Computer Science Degree
6 4 (1.06%) Microsoft Certification
7 3 (0.79%) CHECK Team Member
7 3 (0.79%) CISA
7 3 (0.79%) CISM
7 3 (0.79%) CompTIA Security+
7 3 (0.79%) ITIL Certification
7 3 (0.79%) MCSE
7 3 (0.79%) SC Cleared
7 3 (0.79%) Security Cleared
8 2 (0.53%) CEH
8 2 (0.53%) CWNA
8 2 (0.53%) Network+ Certification
Quality Assurance & Compliance
1 22 (5.82%) QA
2 5 (1.32%) GDPR
2 5 (1.32%) NIST
3 4 (1.06%) ISO/IEC 27001
3 4 (1.06%) SLA
4 3 (0.79%) PMO
4 3 (0.79%) Sarbanes-Oxley
5 1 (0.26%) ISO 15022
5 1 (0.26%) ISO 20022
5 1 (0.26%) PSD2
System Software
1 139 (36.77%) Docker
2 25 (6.61%) Active Directory
3 17 (4.50%) VMware Infrastructure
4 12 (3.17%) Hyper-V
5 5 (1.32%) Microsoft App-V
5 5 (1.32%) vSphere
5 5 (1.32%) XenApp
6 4 (1.06%) Apache ZooKeeper
7 3 (0.79%) LXC
7 3 (0.79%) Virtual Desktop
7 3 (0.79%) Virtual Servers
8 2 (0.53%) KVM
8 2 (0.53%) Xen
9 1 (0.26%) iptables
9 1 (0.26%) VMware ESXi
Systems Management
1 137 (36.24%) Kubernetes
2 133 (35.19%) Terraform
3 82 (21.69%) Ansible
4 69 (18.25%) Puppet
5 19 (5.03%) Opscode Chef
6 10 (2.65%) Nagios
7 9 (2.38%) Grafana
8 8 (2.12%) SCCM
9 6 (1.59%) Prometheus
10 5 (1.32%) SCOM
11 4 (1.06%) EdgeSight
11 4 (1.06%) HAProxy
11 4 (1.06%) SCOrch
11 4 (1.06%) SCVMM
12 3 (0.79%) Docker Swarm
12 3 (0.79%) EnCase
12 3 (0.79%) FTK
12 3 (0.79%) Mesos
12 3 (0.79%) Opsgenie
13 2 (0.53%) Packer
Vendors
1 39 (10.32%) Microsoft
2 26 (6.88%) VMware
3 23 (6.08%) Oracle
4 16 (4.23%) Google
4 16 (4.23%) Red Hat
4 16 (4.23%) Splunk
5 11 (2.91%) Citrix
6 10 (2.65%) Cisco
7 7 (1.85%) Atlassian
8 5 (1.32%) HP
8 5 (1.32%) ServiceNow
9 3 (0.79%) CheckPoint
9 3 (0.79%) EMC
9 3 (0.79%) F5
9 3 (0.79%) Greenplum
9 3 (0.79%) SaltStack
9 3 (0.79%) Solace
9 3 (0.79%) Trayport
9 3 (0.79%) Tripwire
10 2 (0.53%) Palo Alto