Period
to 28 October 2021

The following table provides summary statistics for permanent job vacancies advertised in the City of 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 28 October 2021 with a comparison to the same period in the previous 2 years.

Open Source
Central London > City of London
6 months to
28 Oct 2021
Same period 2020 Same period 2019
Rank 174 93 117
Rank change year-on-year -81 +24 -18
Permanent jobs citing Open Source 81 108 266
As % of all permanent jobs advertised in the City of London 1.35% 2.95% 2.64%
As % of the Processes & Methodologies category 1.43% 3.13% 2.82%
Number of salaries quoted 65 94 231
10th Percentile £44,299 £49,125 £36,250
25th Percentile £57,500 £57,500 £57,625
Median annual salary (50th Percentile) £80,000 £70,000 £75,000
Median % change year-on-year +14.29% -6.67% +7.14%
75th Percentile £95,000 £87,500 £95,000
90th Percentile £112,000 £100,000 £110,000
Central London median annual salary £81,250 £70,000 £75,000
% change year-on-year +16.07% -6.67% +11.11%

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 the City of London with a requirement for process or methodology skills.

All Process and Methodology Skills
City of London
Permanent vacancies with a requirement for process or methodology skills 5,657 3,451 9,447
As % of all permanent IT jobs advertised in the City of London 94.28% 94.34% 93.82%
Number of salaries quoted 5,048 3,043 8,320
10th Percentile £43,175 £45,000 £38,250
25th Percentile £55,000 £55,000 £51,250
Median annual salary (50th Percentile) £72,500 £70,000 £67,500
Median % change year-on-year +3.57% +3.70% +3.85%
75th Percentile £91,250 £85,000 £82,500
90th Percentile £107,500 £100,000 £97,500
Central London median annual salary £70,000 £70,000 £65,000
% change year-on-year - +7.69% +4.00%

Open Source
Job Vacancy Trend in the City of London

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

Job vacancy trend for Open Source in the City of London

Open Source
Salary Trend in the City of London

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

Salary trend for Open Source in the City of London

Open Source
Salary Histogram in the City of London

Salary distribution for jobs citing Open Source in the City of London over the 6 months to 28 October 2021.

Salary histogram for Open Source in the City of London

For the 6 months to 28 October 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 City of London region with a requirement for Open Source.

1 38 (46.91%) Java
2 35 (43.21%) Azure
3 34 (41.98%) Agile Software Development
3 34 (41.98%) DevOps
4 33 (40.74%) Python
5 30 (37.04%) AWS
6 26 (32.10%) Kubernetes
7 24 (29.63%) SQL
8 23 (28.40%) Software Engineering
8 23 (28.40%) GCP
8 23 (28.40%) Docker
9 20 (24.69%) Terraform
9 20 (24.69%) Finance
10 17 (20.99%) Git (software)
10 17 (20.99%) Apache Spark
10 17 (20.99%) Big Data
11 15 (18.52%) Hadoop
11 15 (18.52%) Continuous Integration
12 14 (17.28%) Microsoft
12 14 (17.28%) JavaScript
12 14 (17.28%) Analytics
12 14 (17.28%) Amazon Redshift
12 14 (17.28%) Microservices
12 14 (17.28%) Analytical Skills
12 14 (17.28%) BigQuery
13 13 (16.05%) Information Security
13 13 (16.05%) PowerShell
13 13 (16.05%) Continuous Improvement
14 12 (14.81%) Degree
14 12 (14.81%) Firewall

Open Source
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 17 (20.99%) Apache Spark
2 5 (6.17%) Apache
2 5 (6.17%) Apache Airflow
3 4 (4.94%) Confluence
3 4 (4.94%) SharePoint
4 2 (2.47%) CMS
4 2 (2.47%) Elasticsearch
4 2 (2.47%) Red Hat Fuse
5 1 (1.23%) Cloud Foundry
5 1 (1.23%) GlassFish
5 1 (1.23%) JBoss
5 1 (1.23%) OpenStack
5 1 (1.23%) WebSphere
Applications
1 5 (6.17%) Microsoft Excel
2 4 (4.94%) Microsoft Office
2 4 (4.94%) Microsoft PowerPoint
3 1 (1.23%) Spreadsheet
3 1 (1.23%) Zeplin
Business Applications
1 3 (3.70%) Distributed Ledger
2 1 (1.23%) IBM Operational Decision Manager
Cloud Services
1 35 (43.21%) Azure
2 30 (37.04%) AWS
3 23 (28.40%) GCP
4 11 (13.58%) PaaS
5 10 (12.35%) IaaS
6 9 (11.11%) Serverless
7 6 (7.41%) GitHub
7 6 (7.41%) SaaS
8 5 (6.17%) Azure Key Vault
9 3 (3.70%) Microsoft 365
10 2 (2.47%) Amazon S3
10 2 (2.47%) AWS CloudFormation
10 2 (2.47%) AWS Lambda
10 2 (2.47%) AWS Step Functions
10 2 (2.47%) Firebase
10 2 (2.47%) Power Platform
10 2 (2.47%) Snowflake
11 1 (1.23%) BrowserStack
11 1 (1.23%) Cloud Run
11 1 (1.23%) Slack
Communications & Networking
1 12 (14.81%) Firewall
2 8 (9.88%) Network Security
3 2 (2.47%) Internet
3 2 (2.47%) WebEx
4 1 (1.23%) BGP
4 1 (1.23%) Intrusion Detection
4 1 (1.23%) Multicast
4 1 (1.23%) OSPF
4 1 (1.23%) SAN
4 1 (1.23%) Software-Defined Networking
Database & Business Intelligence
1 17 (20.99%) Big Data
2 15 (18.52%) Hadoop
3 14 (17.28%) Amazon Redshift
3 14 (17.28%) BigQuery
4 8 (9.88%) NoSQL
5 4 (4.94%) Data Warehouse
6 3 (3.70%) Apache Hive
6 3 (3.70%) Blockchain
6 3 (3.70%) InfluxDB
6 3 (3.70%) PostgreSQL
7 2 (2.47%) Amazon RDS
7 2 (2.47%) Flink
7 2 (2.47%) Looker
7 2 (2.47%) Metadata
7 2 (2.47%) Power BI
7 2 (2.47%) Relational Database
7 2 (2.47%) SQL Server
7 2 (2.47%) Tableau
8 1 (1.23%) Azure SQL Database
8 1 (1.23%) MongoDB
Development Applications
1 17 (20.99%) Git (software)
2 10 (12.35%) Jenkins
3 7 (8.64%) GitLab
3 7 (8.64%) JIRA
4 5 (6.17%) TeamCity
5 4 (4.94%) JUnit
5 4 (4.94%) Octopus Deploy
6 2 (2.47%) Subversion
7 1 (1.23%) Apache Archiva
7 1 (1.23%) Artifactory
7 1 (1.23%) Atlassian Bamboo
7 1 (1.23%) Bitbucket
7 1 (1.23%) JMeter
7 1 (1.23%) Maven
7 1 (1.23%) Mockito
7 1 (1.23%) REST Assured
7 1 (1.23%) Selenium
7 1 (1.23%) Sonatype Nexus
7 1 (1.23%) webpack
General
1 20 (24.69%) Finance
2 14 (17.28%) Analytical Skills
3 12 (14.81%) Social Skills
4 7 (8.64%) Banking
5 5 (6.17%) Legal
5 5 (6.17%) Public Sector
6 4 (4.94%) Billing
6 4 (4.94%) Financial Institution
7 3 (3.70%) Law
7 3 (3.70%) Manufacturing
7 3 (3.70%) Retail
8 2 (2.47%) Documentation Skills
8 2 (2.47%) Inclusion and Diversity
8 2 (2.47%) Marketing
8 2 (2.47%) Public Speaking
9 1 (1.23%) Influencing Skills
9 1 (1.23%) Investment Banking
9 1 (1.23%) Presentation Skills
Job Titles
1 15 (18.52%) Software Engineer
2 12 (14.81%) Developer
2 12 (14.81%) Java Engineer
3 11 (13.58%) Java Software Engineer
4 10 (12.35%) Big Data Engineer
4 10 (12.35%) Big Data Software Engineer
4 10 (12.35%) Data Analytics Engineer
5 9 (11.11%) Analyst
5 9 (11.11%) Architect
5 9 (11.11%) Security Engineer
6 7 (8.64%) Cloud Engineer
6 7 (8.64%) Consultant
6 7 (8.64%) Data Engineer
6 7 (8.64%) Java Developer
7 4 (4.94%) DevOps Engineer
7 4 (4.94%) DevSecOps Engineer
7 4 (4.94%) Solutions Architect
8 3 (3.70%) Quality Engineer
8 3 (3.70%) Security Analyst
8 3 (3.70%) Senior Developer
Libraries, Frameworks & Software Standards
1 8 (9.88%) React
2 7 (8.64%) AngularJS
2 7 (8.64%) Kafka
3 6 (7.41%) Node.js
4 5 (6.17%) HTML
4 5 (6.17%) REST
4 5 (6.17%) RESTful
5 4 (4.94%) .NET
5 4 (4.94%) HTML5
5 4 (4.94%) Middleware
6 3 (3.70%) Apache Camel
6 3 (3.70%) CSS
6 3 (3.70%) Hibernate
6 3 (3.70%) Spring
7 2 (2.47%) JMS
7 2 (2.47%) JSON
7 2 (2.47%) LDAP
7 2 (2.47%) OSGi
7 2 (2.47%) SAML
7 2 (2.47%) Vue.js
Miscellaneous
1 5 (6.17%) Enterprise Software
1 5 (6.17%) Mobile App
1 5 (6.17%) Public Cloud
1 5 (6.17%) Tandem
2 4 (4.94%) Algorithms
2 4 (4.94%) Analytical Mindset
2 4 (4.94%) Cloud Native
3 3 (3.70%) Clustering
3 3 (3.70%) Hedge funds
3 3 (3.70%) Management Information System
3 3 (3.70%) User Experience
4 2 (2.47%) CMDB
4 2 (2.47%) Cyberthreat
4 2 (2.47%) Video Conferencing
5 1 (1.23%) Blog
5 1 (1.23%) Data Centre
5 1 (1.23%) Data Structures
5 1 (1.23%) Greenfield Project
5 1 (1.23%) Self-Motivation
5 1 (1.23%) Social Media
Operating Systems
1 10 (12.35%) Linux
2 9 (11.11%) Windows
3 3 (3.70%) VMS
4 2 (2.47%) Android
4 2 (2.47%) Mac OS X
5 1 (1.23%) Apple iOS
5 1 (1.23%) Unix
Processes & Methodologies
1 34 (41.98%) Agile Software Development
1 34 (41.98%) DevOps
2 23 (28.40%) Software Engineering
3 15 (18.52%) Continuous Integration
4 14 (17.28%) Analytics
4 14 (17.28%) Microservices
5 13 (16.05%) Continuous Improvement
5 13 (16.05%) Information Security
6 12 (14.81%) Data Engineering
7 11 (13.58%) Computer Science
7 11 (13.58%) OO
8 10 (12.35%) Graph Analytics
9 9 (11.11%) Cybersecurity
9 9 (11.11%) Problem-Solving
9 9 (11.11%) Test Automation
10 8 (9.88%) Vulnerability Management
11 7 (8.64%) Artificial Intelligence
11 7 (8.64%) Configuration Management
11 7 (8.64%) DevSecOps
11 7 (8.64%) Security Testing
Programming Languages
1 38 (46.91%) Java
2 33 (40.74%) Python
3 24 (29.63%) SQL
4 14 (17.28%) JavaScript
5 13 (16.05%) PowerShell
6 7 (8.64%) C#
6 7 (8.64%) Ruby
7 6 (7.41%) Bash Shell
7 6 (7.41%) Go
7 6 (7.41%) Scala
8 4 (4.94%) Kotlin
8 4 (4.94%) TypeScript
9 3 (3.70%) ES6
9 3 (3.70%) PHP
10 2 (2.47%) C++
10 2 (2.47%) Java 8
11 1 (1.23%) C
11 1 (1.23%) PL/SQL
11 1 (1.23%) T-SQL
Qualifications
1 12 (14.81%) Degree
2 8 (9.88%) Computer Science Degree
3 3 (3.70%) ISTQB
3 3 (3.70%) Microsoft Certification
4 2 (2.47%) AWS Certification
5 1 (1.23%) CCNA
5 1 (1.23%) CEH
5 1 (1.23%) Cisco Certification
5 1 (1.23%) CISSP
5 1 (1.23%) CREST Certified
5 1 (1.23%) DBS Check
5 1 (1.23%) Master's Degree
5 1 (1.23%) SC Cleared
5 1 (1.23%) Security Cleared
Quality Assurance & Compliance
1 7 (8.64%) GDPR
2 6 (7.41%) Data Quality
3 5 (6.17%) QA
4 3 (3.70%) Accessibility
4 3 (3.70%) NIST
5 2 (2.47%) HMG Security Policy Framework
5 2 (2.47%) ISO/IEC 27001
6 1 (1.23%) Cyber Essentials
6 1 (1.23%) ISO 31000
6 1 (1.23%) ISO/IEC 27005
6 1 (1.23%) NCSC
6 1 (1.23%) PMO
6 1 (1.23%) Sarbanes-Oxley
6 1 (1.23%) SLA
System Software
1 23 (28.40%) Docker
2 6 (7.41%) Active Directory
3 3 (3.70%) LXC
3 3 (3.70%) Virtual Machines
3 3 (3.70%) VMware Infrastructure
4 1 (1.23%) Apache ZooKeeper
4 1 (1.23%) Hyper-V
4 1 (1.23%) ISA Server
4 1 (1.23%) KVM
4 1 (1.23%) vSphere
4 1 (1.23%) Xen
Systems Management
1 26 (32.10%) Kubernetes
2 20 (24.69%) Terraform
3 6 (7.41%) Ansible
4 5 (6.17%) Grafana
5 4 (4.94%) Opscode Chef
6 3 (3.70%) Kibana
6 3 (3.70%) Prometheus
7 2 (2.47%) Cisco CUCM
7 2 (2.47%) Jamf Pro
7 2 (2.47%) Puppet
8 1 (1.23%) Mesos
8 1 (1.23%) Nagios
Vendors
1 14 (17.28%) Microsoft
2 5 (6.17%) Google
2 5 (6.17%) Oracle
2 5 (6.17%) Palo Alto
3 4 (4.94%) Cadence
3 4 (4.94%) Splunk
4 3 (3.70%) Cisco
4 3 (3.70%) VMware
5 2 (2.47%) Adobe
5 2 (2.47%) CommVault
5 2 (2.47%) Okta
5 2 (2.47%) Pega
5 2 (2.47%) Salesforce.com
5 2 (2.47%) Verint
6 1 (1.23%) AppDynamics
6 1 (1.23%) CheckPoint
6 1 (1.23%) Fortinet
6 1 (1.23%) Qualys
6 1 (1.23%) Rapid7
6 1 (1.23%) Red Hat