Period
to 30 July 2021

The following table provides summary statistics for permanent job vacancies advertised in London with a requirement for Open Source skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Open Source over the 6 months to 30 July 2021 with a comparison to the same period in the previous 2 years.

Open Source
England > London
6 months to
30 Jul 2021
Same period 2020 Same period 2019
Rank 79 125 98
Rank change year-on-year +46 -27 -9
Permanent jobs citing Open Source 1,845 770 1,875
As % of all permanent jobs advertised in London 4.07% 2.70% 3.28%
As % of the Processes & Methodologies category 4.27% 2.88% 3.51%
Number of salaries quoted 756 603 1,434
10th Percentile £46,250 £42,500 £42,500
25th Percentile £57,500 £55,000 £53,750
Median annual salary (50th Percentile) £75,000 £72,500 £72,500
Median % change year-on-year +3.45% - +7.41%
75th Percentile £91,563 £91,250 £90,000
90th Percentile £105,000 £112,500 £100,000
England median annual salary £67,500 £60,000 £60,000
% change year-on-year +12.50% - -

Open Source is in the Processes and Methodologies 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 process or methodology skills.

All Process and Methodology Skills
London
Permanent vacancies with a requirement for process or methodology skills 43,167 26,769 53,447
As % of all permanent IT jobs advertised in London 95.24% 94.02% 93.58%
Number of salaries quoted 28,629 21,954 43,974
10th Percentile £42,500 £41,250 £36,250
25th Percentile £52,500 £51,250 £47,500
Median annual salary (50th Percentile) £70,000 £68,000 £65,000
Median % change year-on-year +2.94% +4.62% +8.33%
75th Percentile £87,500 £85,000 £82,500
90th Percentile £105,000 £105,000 £97,500
England median annual salary £57,500 £55,000 £52,500
% change year-on-year +4.55% +4.76% +5.00%

Open Source
Job Vacancy Trend in London

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

Job vacancy trend for Open Source in London

Open Source
Salary Trend in London

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

Salary trend for Open Source in London

Open Source
Salary Histogram in London

Salary distribution for jobs citing Open Source in London over the 6 months to 30 July 2021.

Salary histogram for Open Source in London

Open Source
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Open Source within the London region over the 6 months to 30 July 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
Central London +11 161 £80,000 +14.29% 70
West London -2 65 £62,500 -3.85% 36
South London +18 49 £72,500 +7.41% 6
East London +4 4 £72,500 -9.38% 9
North London +17 1 £48,545 - 1
Open Source
England

For the 6 months to 30 July 2021, IT jobs citing Open Source 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 Open Source.

1 941 (51.00%) Agile Software Development
2 817 (44.28%) AWS
3 730 (39.57%) Java
4 695 (37.67%) Python
5 615 (33.33%) Docker
6 613 (33.22%) JavaScript
7 595 (32.25%) Microservices
8 581 (31.49%) Kubernetes
9 573 (31.06%) DevOps
10 534 (28.94%) React
11 531 (28.78%) Software Engineering
12 454 (24.61%) SQL
13 447 (24.23%) Azure
14 444 (24.07%) Finance
15 415 (22.49%) Git (software)
16 407 (22.06%) Social Skills
17 405 (21.95%) Node.js
18 386 (20.92%) REST
19 369 (20.00%) Continuous Integration
20 350 (18.97%) Terraform
21 335 (18.16%) GCP
22 330 (17.89%) Linux
23 323 (17.51%) TDD
23 323 (17.51%) Jenkins
24 317 (17.18%) CSS
25 311 (16.86%) RESTful
26 306 (16.59%) Degree
27 300 (16.26%) Computer Science
28 295 (15.99%) NoSQL
29 293 (15.88%) PostgreSQL

Open Source
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
1 138 (7.48%) Apache
2 122 (6.61%) Apache Spark
3 109 (5.91%) Elasticsearch
4 72 (3.90%) Apache Airflow
5 54 (2.93%) CMS
5 54 (2.93%) nginx
6 46 (2.49%) Confluence
7 44 (2.38%) IIS
8 33 (1.79%) Tornado
9 22 (1.19%) Tomcat
10 12 (0.65%) Kentico
10 12 (0.65%) Sitecore CMS
11 11 (0.60%) ejabberd
12 10 (0.54%) Drupal
12 10 (0.54%) Jupyter
12 10 (0.54%) Luigi
12 10 (0.54%) Red Hat Fuse
13 9 (0.49%) Anypoint
13 9 (0.49%) Cloud Foundry
13 9 (0.49%) WebLogic
Applications
1 19 (1.03%) Adobe Illustrator
1 19 (1.03%) Photoshop
2 17 (0.92%) GIMP
3 13 (0.70%) Spreadsheet
4 11 (0.60%) Zeplin
5 10 (0.54%) InVision
5 10 (0.54%) Sketch
6 9 (0.49%) Microsoft Excel
6 9 (0.49%) Microsoft Office
7 6 (0.33%) Chatbot
7 6 (0.33%) Revit
8 5 (0.27%) AutoCAD
9 3 (0.16%) Figma
9 3 (0.16%) Microsoft PowerPoint
Business Applications
1 21 (1.14%) Distributed Ledger
2 19 (1.03%) R3 Corda
3 9 (0.49%) Payment Gateway
4 5 (0.27%) IBM Operational Decision Manager
4 5 (0.27%) Magento
5 3 (0.16%) Dynamics CRM
6 2 (0.11%) Oracle EBS
6 2 (0.11%) Workfront
7 1 (0.054%) Oracle Applications
7 1 (0.054%) SAP HCM
Cloud Services
1 817 (44.28%) AWS
2 447 (24.23%) Azure
3 335 (18.16%) GCP
4 285 (15.45%) GitHub
5 227 (12.30%) Serverless
6 112 (6.07%) SaaS
7 76 (4.12%) PaaS
8 69 (3.74%) AWS Lambda
9 64 (3.47%) Cloud Computing
10 60 (3.25%) Amazon Kinesis
11 53 (2.87%) Amazon EC2
12 52 (2.82%) Heroku
13 50 (2.71%) IaaS
13 50 (2.71%) npm
14 43 (2.33%) Amazon ECS
15 42 (2.28%) Cloud Functions
16 41 (2.22%) AWS CloudFormation
17 39 (2.11%) Amazon S3
18 32 (1.73%) OpenShift
19 30 (1.63%) Amazon EKS
Communications & Networking
1 77 (4.17%) Internet
2 71 (3.85%) HTTP
3 41 (2.22%) Firewall
4 35 (1.90%) Broadband
5 22 (1.19%) BGP
6 21 (1.14%) VPN
7 19 (1.03%) AMQP
8 17 (0.92%) Asterisk PBX
8 17 (0.92%) Diameter Protocol
8 17 (0.92%) LAN
8 17 (0.92%) SNMP
9 16 (0.87%) Network Security
10 14 (0.76%) WebEx
11 13 (0.70%) PBX
12 12 (0.65%) VoIP
13 9 (0.49%) TCP/IP
14 7 (0.38%) 5G
14 7 (0.38%) SSH
15 6 (0.33%) DNS
16 5 (0.27%) MPLS
Database & Business Intelligence
1 295 (15.99%) NoSQL
2 293 (15.88%) PostgreSQL
3 255 (13.82%) Big Data
4 197 (10.68%) Relational Database
5 152 (8.24%) MySQL
6 150 (8.13%) MongoDB
7 108 (5.85%) Hadoop
8 102 (5.53%) Redis
9 92 (4.99%) Amazon DynamoDB
10 85 (4.61%) BigQuery
11 77 (4.17%) SQL Server
12 68 (3.69%) Amazon Redshift
13 60 (3.25%) Data Warehouse
14 55 (2.98%) RDBMS
15 43 (2.33%) Apache Cassandra
16 42 (2.28%) Metadata
17 37 (2.01%) Tableau
18 34 (1.84%) Blockchain
19 32 (1.73%) Apache Hive
20 30 (1.63%) SQLite
Development Applications
1 415 (22.49%) Git (software)
2 323 (17.51%) Jenkins
3 124 (6.72%) webpack
4 93 (5.04%) JUnit
5 88 (4.77%) JIRA
6 68 (3.69%) Maven
7 67 (3.63%) GitLab
7 67 (3.63%) SonarQube
8 63 (3.41%) Mockito
9 54 (2.93%) Selenium
10 52 (2.82%) TeamCity
11 49 (2.66%) Mocha
12 46 (2.49%) gulp
13 41 (2.22%) Cypress.io
14 40 (2.17%) Cucumber
14 40 (2.17%) DbUnit
14 40 (2.17%) jMock
15 39 (2.11%) Octopus Deploy
16 35 (1.90%) Gradle
17 32 (1.73%) Bitbucket
General
1 444 (24.07%) Finance
2 407 (22.06%) Social Skills
3 185 (10.03%) Retail
4 173 (9.38%) Analytical Skills
5 114 (6.18%) Marketing
6 113 (6.12%) Public Sector
7 112 (6.07%) Banking
8 92 (4.99%) Games
9 58 (3.14%) Legal
10 43 (2.33%) Organisational Skills
11 40 (2.17%) Back Office
12 38 (2.06%) Manufacturing
13 37 (2.01%) Inclusion and Diversity
14 35 (1.90%) Presentation Skills
15 33 (1.79%) Online Betting
16 25 (1.36%) Telecoms
17 24 (1.30%) Billing
18 20 (1.08%) Law
19 19 (1.03%) Automotive
20 16 (0.87%) Investment Banking
Job Titles
1 608 (32.95%) Developer
2 284 (15.39%) Software Engineer
3 167 (9.05%) Java Developer
4 148 (8.02%) Architect
5 121 (6.56%) Java Engineer
5 121 (6.56%) Senior Developer
6 86 (4.66%) Senior Software Engineer
7 80 (4.34%) DevOps Engineer
8 78 (4.23%) Full Stack Developer
9 67 (3.63%) Scala Engineer
10 60 (3.25%) Software Developer
11 59 (3.20%) Data Engineer
12 56 (3.04%) Backend Developer
12 56 (3.04%) Front End Developer (Client-Side Developer)
13 53 (2.87%) Solutions Architect
14 47 (2.55%) Senior Java Engineer
15 46 (2.49%) Python Developer
16 43 (2.33%) Consultant
17 39 (2.11%) UI Developer
18 37 (2.01%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 534 (28.94%) React
2 405 (21.95%) Node.js
3 386 (20.92%) REST
4 317 (17.18%) CSS
5 311 (16.86%) RESTful
6 284 (15.39%) Spring
7 267 (14.47%) HTML
8 233 (12.63%) AngularJS
9 196 (10.62%) Web Services
10 179 (9.70%) GraphQL
11 177 (9.59%) Kafka
12 160 (8.67%) RabbitMQ
12 160 (8.67%) Vue.js
13 155 (8.40%) HTML5
14 144 (7.80%) Spring Boot
15 134 (7.26%) Redux
16 124 (6.72%) CSS3
17 107 (5.80%) Hibernate
18 99 (5.37%) .NET
19 85 (4.61%) Jest
Miscellaneous
1 286 (15.50%) User Experience
2 180 (9.76%) Blog
3 156 (8.46%) Algorithms
4 105 (5.69%) Self-Motivation
5 96 (5.20%) Cloud Native
6 81 (4.39%) Data Structures
7 60 (3.25%) Enterprise Software
8 54 (2.93%) Greenfield Project
9 47 (2.55%) NHS
9 47 (2.55%) Virtual Team
10 44 (2.38%) Data Centre
10 44 (2.38%) Linux Command Line
11 38 (2.06%) Mobile App
12 33 (1.79%) Social Media
13 30 (1.63%) Public Cloud
14 20 (1.08%) Client/Server
15 18 (0.98%) Management Information System
15 18 (0.98%) Online Banking
16 16 (0.87%) Private Cloud
16 16 (0.87%) Video on Demand
Operating Systems
1 330 (17.89%) Linux
2 106 (5.75%) Windows
3 76 (4.12%) Unix
4 71 (3.85%) Android
5 36 (1.95%) Apple iOS
6 30 (1.63%) Red Hat Enterprise Linux
7 23 (1.25%) CentOS
7 23 (1.25%) Mesosphere
8 21 (1.14%) Debian
8 21 (1.14%) Mac OS X
9 4 (0.22%) Tizen
9 4 (0.22%) webOS
10 3 (0.16%) VMS
11 2 (0.11%) FreeBSD
11 2 (0.11%) Mac OS
11 2 (0.11%) Ubuntu
11 2 (0.11%) Windows Server
12 1 (0.054%) Alpine Linux
12 1 (0.054%) Fedora
12 1 (0.054%) SUSE
Processes & Methodologies
1 941 (51.00%) Agile Software Development
2 595 (32.25%) Microservices
3 573 (31.06%) DevOps
4 531 (28.78%) Software Engineering
5 369 (20.00%) Continuous Integration
6 323 (17.51%) TDD
7 300 (16.26%) Computer Science
8 281 (15.23%) Test Automation
9 262 (14.20%) Scrum
10 248 (13.44%) Analytics
11 240 (13.01%) Problem-Solving
12 216 (11.71%) Mentoring
13 202 (10.95%) Machine Learning
14 195 (10.57%) Data Science
15 190 (10.30%) Full Stack Development
16 184 (9.97%) Artificial Intelligence
17 176 (9.54%) BDD
18 172 (9.32%) Continuous Delivery
18 172 (9.32%) Infrastructure as Code
19 171 (9.27%) OO
Programming Languages
1 730 (39.57%) Java
2 695 (37.67%) Python
3 613 (33.22%) JavaScript
4 454 (24.61%) SQL
5 247 (13.39%) TypeScript
6 244 (13.22%) Go
7 178 (9.65%) Scala
8 152 (8.24%) C#
9 131 (7.10%) Ruby
10 130 (7.05%) C++
11 119 (6.45%) ES6
12 104 (5.64%) PHP
13 91 (4.93%) Kotlin
14 90 (4.88%) C
15 69 (3.74%) R
16 63 (3.41%) Rust
17 58 (3.14%) Java 8
18 53 (2.87%) Bash Shell
19 41 (2.22%) Objective-C
20 36 (1.95%) Shell Script
Qualifications
1 306 (16.59%) Degree
2 152 (8.24%) Computer Science Degree
3 120 (6.50%) Security Cleared
4 103 (5.58%) SC Cleared
5 32 (1.73%) Master's Degree
6 12 (0.65%) DV Cleared
6 12 (0.65%) PhD
7 11 (0.60%) AWS Certification
8 9 (0.49%) CISSP
9 6 (0.33%) CSSLP
9 6 (0.33%) ISTQB
10 5 (0.27%) CISM
10 5 (0.27%) DBS Check
11 4 (0.22%) RHCE
12 3 (0.16%) RHCSA
12 3 (0.16%) TOGAF Certification
13 2 (0.11%) A+ Certification
13 2 (0.11%) Cisco Certification
13 2 (0.11%) CREST Certified
13 2 (0.11%) OSCP
Quality Assurance & Compliance
1 114 (6.18%) QA
2 74 (4.01%) Accessibility
3 47 (2.55%) GDPR
4 23 (1.25%) SLA
5 20 (1.08%) Data Quality
6 12 (0.65%) WCAG
7 9 (0.49%) NIST
7 9 (0.49%) PSD2
8 6 (0.33%) WAI
9 4 (0.22%) ISO/IEC 27001
9 4 (0.22%) PCI DSS
9 4 (0.22%) Sarbanes-Oxley
10 2 (0.11%) HMG Security Policy Framework
10 2 (0.11%) NCSC
10 2 (0.11%) SOC 2
11 1 (0.054%) Cyber Essentials
11 1 (0.054%) Government Security Classifications
11 1 (0.054%) ISO 31000
11 1 (0.054%) ISO/IEC 27005
11 1 (0.054%) PMO
System Software
1 615 (33.33%) Docker
2 29 (1.57%) Postfix
3 24 (1.30%) KVM
4 19 (1.03%) VMware Infrastructure
5 18 (0.98%) iptables
6 17 (0.92%) QEMU
7 15 (0.81%) Apache ZooKeeper
7 15 (0.81%) Kamailio
8 14 (0.76%) Ceph
9 13 (0.70%) Virtual Machines
10 11 (0.60%) etcd
10 11 (0.60%) ISA Server
11 10 (0.54%) LXC
12 9 (0.49%) Active Directory
13 6 (0.33%) Oracle RAC
14 4 (0.22%) HDFS
14 4 (0.22%) NFS
14 4 (0.22%) OpenSIPS
15 3 (0.16%) Varnish
15 3 (0.16%) VMware ESXi
Systems Management
1 581 (31.49%) Kubernetes
2 350 (18.97%) Terraform
3 198 (10.73%) Ansible
4 155 (8.40%) Puppet
5 142 (7.70%) Prometheus
6 119 (6.45%) Grafana
7 101 (5.47%) Opscode Chef
8 47 (2.55%) Consul
9 42 (2.28%) Docker Swarm
10 34 (1.84%) ZABBIX
11 29 (1.57%) Istio
12 27 (1.46%) Kibana
13 25 (1.36%) Packer
14 24 (1.30%) Galera Cluster
14 24 (1.30%) Hadoop YARN
15 23 (1.25%) Automic
16 21 (1.14%) HAProxy
17 16 (0.87%) Nagios
18 15 (0.81%) logstash
19 12 (0.65%) linkerd
Vendors
1 215 (11.65%) Google
2 148 (8.02%) Microsoft
3 99 (5.37%) Oracle
4 39 (2.11%) Adobe
5 36 (1.95%) Splunk
6 30 (1.63%) Apple
7 25 (1.36%) Cisco
7 25 (1.36%) Red Hat
8 24 (1.30%) Percona
9 22 (1.19%) VMware
10 21 (1.14%) HP
11 19 (1.03%) Mitel
11 19 (1.03%) Netlify
12 17 (0.92%) GENBAND
12 17 (0.92%) IBM
12 17 (0.92%) Juniper
12 17 (0.92%) SonicWALL
12 17 (0.92%) YouTube
13 16 (0.87%) MuleSoft
14 15 (0.81%) SAP