Period
to 14 May 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 14 May 2021 with a comparison to the same period in the previous 2 years.

Open Source
England > London
6 months to
14 May 2021
Same period 2020 Same period 2019
Rank 92 108 102
Rank change year-on-year +16 -6 -9
Permanent jobs citing Open Source 1,229 1,233 1,934
As % of all permanent jobs advertised in London 3.65% 3.05% 3.30%
As % of the Processes & Methodologies category 3.88% 3.25% 3.55%
Number of salaries quoted 762 922 1,484
10th Percentile £46,250 £42,719 £42,500
25th Percentile £60,000 £53,931 £53,750
Median annual salary (50th Percentile) £75,000 £73,750 £70,000
Median % change year-on-year +1.69% +5.36% +3.70%
75th Percentile £90,000 £98,438 £86,250
90th Percentile £107,500 £127,250 £97,500
England median annual salary £67,500 £62,875 £60,000
% change year-on-year +7.36% +4.79% +2.56%

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 31,661 37,989 54,428
As % of all permanent IT jobs advertised in London 94.01% 93.91% 92.99%
Number of salaries quoted 24,194 30,922 44,437
10th Percentile £42,500 £38,250 £36,250
25th Percentile £52,500 £50,000 £47,500
Median annual salary (50th Percentile) £70,000 £67,500 £65,000
Median % change year-on-year +3.70% +3.85% +8.33%
75th Percentile £87,500 £85,000 £81,250
90th Percentile £105,000 £102,500 £97,500
England median annual salary £55,000 £55,000 £52,500
% change year-on-year - +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 14 May 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 14 May 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 +12 173 £75,000 +7.14% 68
South London +18 40 £65,000 -10.34% 1
West London +24 14 £42,500 -34.62% 20
East London -3 11 £72,500 -12.12% 9
Open Source
England

For the 6 months to 14 May 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.

1 673 (54.76%) Agile Software Development
2 581 (47.27%) AWS
3 454 (36.94%) Java
4 442 (35.96%) Python
5 389 (31.65%) DevOps
6 368 (29.94%) JavaScript
7 364 (29.62%) Software Engineering
8 357 (29.05%) Azure
9 343 (27.91%) Microservices
10 330 (26.85%) Docker
11 304 (24.74%) Kubernetes
12 257 (20.91%) Finance
13 256 (20.83%) SQL
14 250 (20.34%) GCP
15 245 (19.93%) React
16 242 (19.69%) Social Skills
17 231 (18.80%) Git (software)
17 231 (18.80%) Linux
18 225 (18.31%) Continuous Integration
19 199 (16.19%) Computer Science
20 198 (16.11%) Degree
21 197 (16.03%) REST
22 192 (15.62%) Jenkins
23 191 (15.54%) Test Automation
24 190 (15.46%) NoSQL
25 189 (15.38%) RESTful
26 183 (14.89%) Big Data
27 168 (13.67%) Google
28 166 (13.51%) PostgreSQL
29 165 (13.43%) Terraform

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 91 (7.40%) Apache Spark
2 73 (5.94%) Apache
3 52 (4.23%) Elasticsearch
4 45 (3.66%) Apache Airflow
5 40 (3.25%) Confluence
6 34 (2.77%) nginx
7 33 (2.69%) CMS
8 23 (1.87%) IIS
9 20 (1.63%) Tomcat
10 19 (1.55%) Red Hat Fuse
11 16 (1.30%) Sitecore CMS
12 15 (1.22%) JBoss
13 14 (1.14%) Tornado
14 13 (1.06%) ejabberd
14 13 (1.06%) Luigi
15 10 (0.81%) Anypoint
15 10 (0.81%) Apache ServiceMix
16 9 (0.73%) Drupal
16 9 (0.73%) OpenStack
16 9 (0.73%) WebLogic
Applications
1 11 (0.90%) Adobe XD
1 11 (0.90%) Figma
1 11 (0.90%) Sketch
2 8 (0.65%) Spreadsheet
3 6 (0.49%) Revit
4 5 (0.41%) Adobe Illustrator
4 5 (0.41%) AutoCAD
4 5 (0.41%) GIMP
4 5 (0.41%) Photoshop
5 3 (0.24%) Microsoft Office
6 1 (0.081%) Microsoft Excel
6 1 (0.081%) Zeplin
Business Applications
1 9 (0.73%) Oracle Applications
2 4 (0.33%) IBM Operational Decision Manager
3 3 (0.24%) Dynamics CRM
3 3 (0.24%) Magento
4 2 (0.16%) Distributed Ledger
5 1 (0.081%) SAP HCM
5 1 (0.081%) Sentinel
Cloud Services
1 581 (47.27%) AWS
2 357 (29.05%) Azure
3 250 (20.34%) GCP
4 152 (12.37%) GitHub
5 142 (11.55%) Serverless
6 62 (5.04%) SaaS
7 47 (3.82%) Cloud Computing
8 38 (3.09%) AWS Lambda
9 35 (2.85%) PaaS
10 28 (2.28%) Heroku
11 27 (2.20%) IaaS
12 26 (2.12%) Amazon EKS
12 26 (2.12%) Power Platform
13 23 (1.87%) Boomi
13 23 (1.87%) Cloud Functions
14 19 (1.55%) Amazon Kinesis
15 18 (1.46%) Amazon ECS
16 17 (1.38%) Amazon EC2
16 17 (1.38%) AWS CloudFormation
16 17 (1.38%) Azure Functions
Communications & Networking
1 56 (4.56%) Internet
2 32 (2.60%) Firewall
3 25 (2.03%) HTTP
4 23 (1.87%) BGP
5 19 (1.55%) Asterisk PBX
5 19 (1.55%) LAN
5 19 (1.55%) SNMP
5 19 (1.55%) VPN
6 18 (1.46%) Diameter Protocol
7 13 (1.06%) PBX
8 12 (0.98%) VoIP
9 8 (0.65%) Skype
10 7 (0.57%) DNS
10 7 (0.57%) Network Security
10 7 (0.57%) TCP/IP
11 6 (0.49%) RTP
12 5 (0.41%) 5G
12 5 (0.41%) MPLS
13 4 (0.33%) Broadband
13 4 (0.33%) WAN
Database & Business Intelligence
1 190 (15.46%) NoSQL
2 183 (14.89%) Big Data
3 166 (13.51%) PostgreSQL
4 111 (9.03%) Relational Database
5 100 (8.14%) Hadoop
6 93 (7.57%) MongoDB
7 76 (6.18%) MySQL
8 75 (6.10%) SQL Server
9 65 (5.29%) BigQuery
10 59 (4.80%) Amazon Redshift
11 46 (3.74%) Redis
12 43 (3.50%) Amazon DynamoDB
13 42 (3.42%) Data Warehouse
14 41 (3.34%) RDBMS
15 35 (2.85%) Tableau
16 32 (2.60%) Apache Cassandra
17 25 (2.03%) Apache Hive
18 20 (1.63%) Looker
19 16 (1.30%) Presto
19 16 (1.30%) SQL Server Reporting Services
Development Applications
1 231 (18.80%) Git (software)
2 192 (15.62%) Jenkins
3 73 (5.94%) JIRA
4 66 (5.37%) GitLab
5 62 (5.04%) JUnit
6 49 (3.99%) Maven
7 43 (3.50%) Mockito
7 43 (3.50%) SonarQube
8 40 (3.25%) Selenium
9 37 (3.01%) Atlassian Bamboo
10 32 (2.60%) DbUnit
10 32 (2.60%) jMock
11 26 (2.12%) Bitbucket
11 26 (2.12%) webpack
12 24 (1.95%) Cucumber
12 24 (1.95%) Cypress.io
13 19 (1.55%) Octopus Deploy
14 18 (1.46%) CircleCI
15 15 (1.22%) TeamCity
15 15 (1.22%) WebDriver
General
1 257 (20.91%) Finance
2 242 (19.69%) Social Skills
3 95 (7.73%) Retail
4 93 (7.57%) Analytical Skills
5 88 (7.16%) Public Sector
6 73 (5.94%) Banking
7 69 (5.61%) Games
8 66 (5.37%) Marketing
9 41 (3.34%) Organisational Skills
10 27 (2.20%) Presentation Skills
11 26 (2.12%) Legal
12 23 (1.87%) Manufacturing
13 20 (1.63%) Investment Banking
14 19 (1.55%) Telecoms
15 18 (1.46%) Back Office
16 16 (1.30%) Electronics
17 14 (1.14%) Front Office
17 14 (1.14%) Online Betting
18 12 (0.98%) Automotive
19 9 (0.73%) Publishing
Job Titles
1 399 (32.47%) Developer
2 205 (16.68%) Software Engineer
3 141 (11.47%) Architect
4 97 (7.89%) Senior Developer
5 92 (7.49%) Java Developer
6 77 (6.27%) React Developer
7 74 (6.02%) DevOps Engineer
8 73 (5.94%) Java Engineer
9 60 (4.88%) Data Engineer
10 55 (4.48%) Developer/Software Engineer
11 46 (3.74%) Solutions Architect
12 42 (3.42%) Full Stack Developer
13 41 (3.34%) Consultant
14 39 (3.17%) Software Developer
15 37 (3.01%) Java Software Engineer
16 36 (2.93%) Scala Engineer
17 34 (2.77%) Front End Developer (Client-Side Developer)
18 32 (2.60%) AWS Architect
19 31 (2.52%) Senior Java Developer
20 28 (2.28%) Senior Software Engineer
Libraries, Frameworks & Software Standards
1 245 (19.93%) React
2 197 (16.03%) REST
3 189 (15.38%) RESTful
4 163 (13.26%) CSS
5 160 (13.02%) Node.js
6 157 (12.77%) Web Services
7 155 (12.61%) AngularJS
8 143 (11.64%) HTML
9 113 (9.19%) Spring
10 112 (9.11%) .NET
11 103 (8.38%) React Native
12 73 (5.94%) RabbitMQ
13 72 (5.86%) HTML5
13 72 (5.86%) Kafka
14 67 (5.45%) Redux
15 60 (4.88%) SOAP
16 58 (4.72%) Spring Boot
17 56 (4.56%) GraphQL
18 47 (3.82%) Sass
19 46 (3.74%) Vue.js
Miscellaneous
1 155 (12.61%) Blog
2 109 (8.87%) User Experience
3 79 (6.43%) Cloud Native
4 69 (5.61%) Algorithms
5 65 (5.29%) Self-Motivation
6 48 (3.91%) Virtual Team
7 44 (3.58%) Greenfield Project
8 41 (3.34%) Data Structures
9 40 (3.25%) Mobile App
10 39 (3.17%) Data Centre
11 28 (2.28%) NHS
12 21 (1.71%) Public Cloud
13 18 (1.46%) Enterprise Software
14 16 (1.30%) Social Media
15 14 (1.14%) Linux Command Line
16 13 (1.06%) Cyberattack
17 12 (0.98%) Online Banking
18 11 (0.90%) Management Information System
18 11 (0.90%) Private Cloud
19 10 (0.81%) Fixed Income
Operating Systems
1 231 (18.80%) Linux
2 88 (7.16%) Windows
3 69 (5.61%) Android
4 49 (3.99%) Unix
5 47 (3.82%) Red Hat Enterprise Linux
6 40 (3.25%) CentOS
7 27 (2.20%) Apple iOS
8 25 (2.03%) Debian
9 6 (0.49%) Windows Server
10 5 (0.41%) Ubuntu
11 4 (0.33%) Fedora
11 4 (0.33%) Mac OS X
11 4 (0.33%) VMS
12 3 (0.24%) Mac OS
13 1 (0.081%) FreeBSD
13 1 (0.081%) SUSE
Processes & Methodologies
1 673 (54.76%) Agile Software Development
2 389 (31.65%) DevOps
3 364 (29.62%) Software Engineering
4 343 (27.91%) Microservices
5 225 (18.31%) Continuous Integration
6 199 (16.19%) Computer Science
7 191 (15.54%) Test Automation
8 152 (12.37%) TDD
9 148 (12.04%) Mentoring
10 147 (11.96%) Analytics
10 147 (11.96%) Scrum
11 121 (9.85%) Configuration Management
12 110 (8.95%) Continuous Delivery
13 106 (8.62%) Problem-Solving
14 105 (8.54%) Artificial Intelligence
15 103 (8.38%) Machine Learning
16 98 (7.97%) OO
17 95 (7.73%) BDD
18 92 (7.49%) Fintech
19 90 (7.32%) Infrastructure as Code
Programming Languages
1 454 (36.94%) Java
2 442 (35.96%) Python
3 368 (29.94%) JavaScript
4 256 (20.83%) SQL
5 115 (9.36%) C#
6 101 (8.22%) Go
7 99 (8.06%) Scala
8 98 (7.97%) TypeScript
9 95 (7.73%) C++
10 88 (7.16%) C
11 84 (6.83%) Ruby
12 66 (5.37%) ES6
13 63 (5.13%) PHP
14 49 (3.99%) Bash Shell
15 43 (3.50%) Kotlin
16 35 (2.85%) Perl
17 30 (2.44%) R
18 29 (2.36%) Shell Script
19 25 (2.03%) Objective-C
20 23 (1.87%) PowerShell
Qualifications
1 198 (16.11%) Degree
2 106 (8.62%) Security Cleared
3 105 (8.54%) Computer Science Degree
4 95 (7.73%) SC Cleared
5 22 (1.79%) Master's Degree
6 18 (1.46%) DV Cleared
7 9 (0.73%) CISSP
8 8 (0.65%) AWS Certification
8 8 (0.65%) PhD
9 5 (0.41%) CISM
9 5 (0.41%) CSSLP
10 4 (0.33%) RHCE
11 3 (0.24%) RHCSA
11 3 (0.24%) TOGAF Certification
12 2 (0.16%) CCNA
12 2 (0.16%) Cisco Certification
12 2 (0.16%) ISTQB
13 1 (0.081%) ISEB
13 1 (0.081%) PMP
13 1 (0.081%) RHCA
Quality Assurance & Compliance
1 67 (5.45%) QA
2 24 (1.95%) GDPR
3 13 (1.06%) Data Quality
4 5 (0.41%) ISO/IEC 27001
4 5 (0.41%) NIST
5 4 (0.33%) Government Security Classifications
5 4 (0.33%) NCSC
5 4 (0.33%) Sarbanes-Oxley
5 4 (0.33%) SLA
6 2 (0.16%) Cyber Essentials
6 2 (0.16%) SOC 2
7 1 (0.081%) Cyber Essentials PLUS
7 1 (0.081%) HMG Security Policy Framework
7 1 (0.081%) ISO 9001
7 1 (0.081%) PMO
7 1 (0.081%) WCAG
System Software
1 330 (26.85%) Docker
2 23 (1.87%) KVM
3 20 (1.63%) Postfix
4 19 (1.55%) iptables
4 19 (1.55%) Kamailio
5 18 (1.46%) QEMU
6 15 (1.22%) VMware Infrastructure
7 9 (0.73%) HDFS
8 8 (0.65%) Ceph
9 7 (0.57%) LXC
10 6 (0.49%) OpenSIPS
10 6 (0.49%) Oracle RAC
11 5 (0.41%) NFS
11 5 (0.41%) Virtual Machines
12 3 (0.24%) Active Directory
12 3 (0.24%) Varnish
13 2 (0.16%) Apache ZooKeeper
13 2 (0.16%) ISA Server
14 1 (0.081%) Samba
14 1 (0.081%) Xen
Systems Management
1 304 (24.74%) Kubernetes
2 165 (13.43%) Terraform
3 128 (10.41%) Ansible
4 108 (8.79%) Puppet
5 71 (5.78%) Grafana
5 71 (5.78%) Prometheus
6 66 (5.37%) Opscode Chef
7 30 (2.44%) ZABBIX
8 26 (2.12%) HAProxy
9 23 (1.87%) Docker Swarm
10 22 (1.79%) Galera Cluster
11 20 (1.63%) Consul
11 20 (1.63%) Packer
12 18 (1.46%) Istio
13 17 (1.38%) Nagios
14 14 (1.14%) Graphite
15 12 (0.98%) Rancher
16 8 (0.65%) Kibana
17 7 (0.57%) Icinga
18 6 (0.49%) Data Guard
Vendors
1 168 (13.67%) Google
2 125 (10.17%) Microsoft
3 59 (4.80%) Oracle
4 40 (3.25%) Adobe
5 34 (2.77%) MuleSoft
6 26 (2.12%) Dell
7 23 (1.87%) Cisco
8 22 (1.79%) IBM
8 22 (1.79%) Percona
9 21 (1.71%) HP
10 19 (1.55%) Red Hat
11 18 (1.46%) GENBAND
11 18 (1.46%) Juniper
11 18 (1.46%) Mitel
11 18 (1.46%) SonicWALL
12 17 (1.38%) Splunk
13 16 (1.30%) Sitecore
13 16 (1.30%) VMware
14 15 (1.22%) TIBCO
15 14 (1.14%) SAP