Period
to 24 July 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 24 July 2021 with a comparison to the same period in the previous 2 years.

Open Source
Central London > City of London
6 months to
24 Jul 2021
Same period 2020 Same period 2019
Rank 125 131 110
Rank change year-on-year +6 -21 -2
Permanent jobs citing Open Source 126 116 284
As % of all permanent jobs advertised in the City of London 2.24% 2.12% 2.76%
As % of the Processes & Methodologies category 2.35% 2.25% 2.94%
Number of salaries quoted 93 99 260
10th Percentile £51,500 £51,250 £48,625
25th Percentile £57,500 £59,375 £59,688
Median annual salary (50th Percentile) £80,000 £72,500 £80,000
Median % change year-on-year +10.34% -9.38% +14.29%
75th Percentile £87,500 £95,000 £95,000
90th Percentile £100,000 £110,500 £105,125
Central London median annual salary £80,000 £70,000 £77,500
% change year-on-year +14.29% -9.68% +10.71%

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 5,360 5,166 9,670
As % of all permanent IT jobs advertised in the City of London 95.27% 94.29% 93.85%
Number of salaries quoted 4,784 4,546 8,625
10th Percentile £43,750 £42,500 £37,500
25th Percentile £55,000 £52,500 £50,000
Median annual salary (50th Percentile) £72,500 £70,000 £65,000
Median % change year-on-year +3.57% +7.69% +1.56%
75th Percentile £91,250 £85,000 £82,500
90th Percentile £106,250 £98,750 £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 24 July 2021.

Salary histogram for Open Source in the City of London

For the 6 months to 24 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 City of London region with a requirement for Open Source.

1 75 (59.52%) Agile Software Development
2 69 (54.76%) Java
3 56 (44.44%) DevOps
4 54 (42.86%) AWS
5 52 (41.27%) Azure
6 49 (38.89%) Microservices
7 46 (36.51%) Python
8 43 (34.13%) Software Engineering
9 41 (32.54%) Hadoop
9 41 (32.54%) Apache Spark
9 41 (32.54%) Docker
10 40 (31.75%) Kubernetes
11 39 (30.95%) Big Data
12 37 (29.37%) Git (software)
13 36 (28.57%) SQL
14 34 (26.98%) JavaScript
14 34 (26.98%) Continuous Integration
15 31 (24.60%) GCP
16 30 (23.81%) Project Delivery
17 28 (22.22%) Social Skills
17 28 (22.22%) React
18 27 (21.43%) AngularJS
19 26 (20.63%) Finance
19 26 (20.63%) Analytics
20 25 (19.84%) OO
20 25 (19.84%) Microsoft
21 24 (19.05%) Amazon Redshift
21 24 (19.05%) Data Engineering
22 23 (18.25%) BigQuery
22 23 (18.25%) Computer Science

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 41 (32.54%) Apache Spark
2 10 (7.94%) Apache
3 8 (6.35%) Anypoint
4 6 (4.76%) Red Hat Fuse
5 5 (3.97%) CMS
6 4 (3.17%) Confluence
6 4 (3.17%) GlassFish
6 4 (3.17%) JBoss
6 4 (3.17%) WebSphere
7 3 (2.38%) Elasticsearch
8 1 (0.79%) Apache Airflow
8 1 (0.79%) ejabberd
8 1 (0.79%) IIS
8 1 (0.79%) nginx
8 1 (0.79%) Tomcat
Applications
1 2 (1.59%) Microsoft Excel
1 2 (1.59%) Microsoft Office
1 2 (1.59%) Microsoft PowerPoint
2 1 (0.79%) Spreadsheet
2 1 (0.79%) Zeplin
Business Applications
1 4 (3.17%) IBM Operational Decision Manager
2 2 (1.59%) Distributed Ledger
Cloud Services
1 54 (42.86%) AWS
2 52 (41.27%) Azure
3 31 (24.60%) GCP
4 9 (7.14%) iPaaS
5 7 (5.56%) PaaS
5 7 (5.56%) SaaS
6 6 (4.76%) GitHub
6 6 (4.76%) IaaS
7 5 (3.97%) Azure Key Vault
7 5 (3.97%) Cloud Computing
8 2 (1.59%) Firebase
8 2 (1.59%) Serverless
9 1 (0.79%) AtomSphere
9 1 (0.79%) Azure Active Directory
9 1 (0.79%) Boomi
9 1 (0.79%) BrowserStack
9 1 (0.79%) Microsoft 365
9 1 (0.79%) OpenShift
9 1 (0.79%) Power Platform
9 1 (0.79%) Slack
Communications & Networking
1 11 (8.73%) Firewall
2 6 (4.76%) Network Security
3 4 (3.17%) Internet
4 3 (2.38%) WebEx
5 2 (1.59%) BGP
6 1 (0.79%) Asterisk PBX
6 1 (0.79%) Diameter Protocol
6 1 (0.79%) Intrusion Detection
6 1 (0.79%) LAN
6 1 (0.79%) MPLS
6 1 (0.79%) OSPF
6 1 (0.79%) PBX
6 1 (0.79%) SNMP
6 1 (0.79%) TCP/IP
6 1 (0.79%) VPN
6 1 (0.79%) WAN
Database & Business Intelligence
1 41 (32.54%) Hadoop
2 39 (30.95%) Big Data
3 24 (19.05%) Amazon Redshift
4 23 (18.25%) BigQuery
5 22 (17.46%) NoSQL
6 15 (11.90%) Apache Hive
7 13 (10.32%) SQL Server
8 12 (9.52%) PostgreSQL
9 11 (8.73%) InfluxDB
10 8 (6.35%) Azure SQL Database
10 8 (6.35%) MongoDB
10 8 (6.35%) RDBMS
10 8 (6.35%) Relational Database
10 8 (6.35%) SQL Server 2012
10 8 (6.35%) SQL Server Analysis Services
10 8 (6.35%) SQL Server Integration Services
10 8 (6.35%) SQL Server Reporting Services
11 3 (2.38%) Blockchain
12 2 (1.59%) Data Lake
12 2 (1.59%) Text Mining
Development Applications
1 37 (29.37%) Git (software)
2 18 (14.29%) Jenkins
3 9 (7.14%) GitLab
4 8 (6.35%) Octopus Deploy
5 7 (5.56%) JUnit
6 5 (3.97%) Atlassian Bamboo
6 5 (3.97%) JIRA
7 4 (3.17%) Apache Archiva
7 4 (3.17%) Artifactory
7 4 (3.17%) Bitbucket
7 4 (3.17%) Mockito
7 4 (3.17%) Sonatype Nexus
7 4 (3.17%) TeamCity
7 4 (3.17%) Visual Studio Team System
8 3 (2.38%) Maven
9 2 (1.59%) Gradle
9 2 (1.59%) SonarQube
9 2 (1.59%) webpack
10 1 (0.79%) Appium
10 1 (0.79%) Selenium
General
1 28 (22.22%) Social Skills
2 26 (20.63%) Finance
3 15 (11.90%) Analytical Skills
4 9 (7.14%) Banking
5 5 (3.97%) Marketing
6 4 (3.17%) Public Speaking
7 3 (2.38%) Public Sector
8 2 (1.59%) Billing
8 2 (1.59%) Financial Institution
8 2 (1.59%) Legal
9 1 (0.79%) Documentation Skills
9 1 (0.79%) Games
9 1 (0.79%) Organisational Skills
9 1 (0.79%) Presentation Skills
Job Titles
1 33 (26.19%) Developer
2 31 (24.60%) Software Engineer
3 27 (21.43%) Java Engineer
4 25 (19.84%) Java Software Engineer
5 23 (18.25%) Big Data Engineer
5 23 (18.25%) Big Data Software Engineer
5 23 (18.25%) Data Analytics Engineer
5 23 (18.25%) Java Developer
6 12 (9.52%) Architect
7 9 (7.14%) Cloud Engineer
7 9 (7.14%) Security Engineer
8 8 (6.35%) DBA
8 8 (6.35%) Senior DBA
8 8 (6.35%) Senior Developer
8 8 (6.35%) Senior SQL DBA
8 8 (6.35%) Senior SQL Server DBA
8 8 (6.35%) SQL DBA
8 8 (6.35%) SQL Server DBA
9 7 (5.56%) Full Stack Developer
10 5 (3.97%) AWS Developer
Libraries, Frameworks & Software Standards
1 28 (22.22%) React
2 27 (21.43%) AngularJS
3 21 (16.67%) RESTful
4 20 (15.87%) Node.js
5 17 (13.49%) HTML
6 15 (11.90%) CSS
6 15 (11.90%) HTML5
7 12 (9.52%) Spring
8 10 (7.94%) Apache Camel
8 10 (7.94%) Hibernate
9 7 (5.56%) Middleware
9 7 (5.56%) REST
10 6 (4.76%) OSGi
10 6 (4.76%) Spring Boot
10 6 (4.76%) Vue.js
11 5 (3.97%) JMS
12 4 (3.17%) .NET
12 4 (3.17%) .NET Framework
12 4 (3.17%) Java EE
12 4 (3.17%) Velocity
Miscellaneous
1 10 (7.94%) Cloud Native
1 10 (7.94%) Clustering
2 8 (6.35%) Enterprise Software
3 7 (5.56%) Blog
3 7 (5.56%) Social Media
4 6 (4.76%) User Experience
5 5 (3.97%) Tandem
6 4 (3.17%) Analytical Mindset
7 3 (2.38%) Public Cloud
7 3 (2.38%) Video Conferencing
8 2 (1.59%) Data Structures
8 2 (1.59%) Foreign Exchange (FX)
8 2 (1.59%) Hedge funds
8 2 (1.59%) Management Information System
8 2 (1.59%) Mobile App
8 2 (1.59%) Private Cloud
8 2 (1.59%) Self-Motivation
9 1 (0.79%) Algorithms
9 1 (0.79%) Data Centre
9 1 (0.79%) Greenfield Project
Operating Systems
1 14 (11.11%) Windows
2 12 (9.52%) Linux
3 2 (1.59%) Android
3 2 (1.59%) Mac OS X
3 2 (1.59%) Unix
4 1 (0.79%) Apple iOS
4 1 (0.79%) CentOS
4 1 (0.79%) Debian
4 1 (0.79%) Red Hat Enterprise Linux
Processes & Methodologies
1 75 (59.52%) Agile Software Development
2 56 (44.44%) DevOps
3 49 (38.89%) Microservices
4 43 (34.13%) Software Engineering
5 34 (26.98%) Continuous Integration
6 30 (23.81%) Project Delivery
7 26 (20.63%) Analytics
8 25 (19.84%) OO
9 24 (19.05%) Data Engineering
10 23 (18.25%) Computer Science
11 20 (15.87%) Test Automation
12 17 (13.49%) Scrum
13 16 (12.70%) Artificial Intelligence
14 14 (11.11%) Configuration Management
15 13 (10.32%) High Availability
15 13 (10.32%) Information Security
16 12 (9.52%) Capacity Planning
16 12 (9.52%) Service Delivery
17 11 (8.73%) Continuous Improvement
17 11 (8.73%) Performance Analysis
Programming Languages
1 69 (54.76%) Java
2 46 (36.51%) Python
3 36 (28.57%) SQL
4 34 (26.98%) JavaScript
5 21 (16.67%) PowerShell
6 17 (13.49%) PHP
7 15 (11.90%) ES6
7 15 (11.90%) Kotlin
7 15 (11.90%) Scala
7 15 (11.90%) TypeScript
8 14 (11.11%) C#
9 8 (6.35%) T-SQL
10 7 (5.56%) Java 8
11 6 (4.76%) Ruby
12 5 (3.97%) Bash Shell
13 4 (3.17%) C
13 4 (3.17%) C++
13 4 (3.17%) Go
14 1 (0.79%) Perl
14 1 (0.79%) PL/SQL
Qualifications
1 22 (17.46%) Degree
2 21 (16.67%) Computer Science Degree
3 3 (2.38%) AWS Certification
3 3 (2.38%) ISTQB
3 3 (2.38%) SC Cleared
3 3 (2.38%) Security Cleared
4 2 (1.59%) CCNA
4 2 (1.59%) Cisco Certification
4 2 (1.59%) Master's Degree
5 1 (0.79%) CREST Certified
5 1 (0.79%) RHCE
5 1 (0.79%) RHCSA
Quality Assurance & Compliance
1 7 (5.56%) Accessibility
2 5 (3.97%) GDPR
2 5 (3.97%) QA
3 2 (1.59%) HMG Security Policy Framework
3 2 (1.59%) ISO/IEC 27001
3 2 (1.59%) NIST
4 1 (0.79%) Cyber Essentials
4 1 (0.79%) Data Quality
4 1 (0.79%) ISO 31000
4 1 (0.79%) ISO/IEC 27005
4 1 (0.79%) NCSC
4 1 (0.79%) PMO
4 1 (0.79%) SLA
System Software
1 41 (32.54%) Docker
2 11 (8.73%) VMware Infrastructure
3 6 (4.76%) Active Directory
4 2 (1.59%) LXC
5 1 (0.79%) HDFS
5 1 (0.79%) iptables
5 1 (0.79%) ISA Server
5 1 (0.79%) Kamailio
5 1 (0.79%) KVM
5 1 (0.79%) Postfix
5 1 (0.79%) QEMU
Systems Management
1 40 (31.75%) Kubernetes
2 19 (15.08%) Terraform
3 14 (11.11%) Grafana
4 12 (9.52%) Ansible
5 4 (3.17%) Opscode Chef
6 3 (2.38%) Cisco CUCM
6 3 (2.38%) Kibana
6 3 (2.38%) Prometheus
7 2 (1.59%) Jamf Pro
7 2 (1.59%) Puppet
8 1 (0.79%) Consul
8 1 (0.79%) Docker Swarm
8 1 (0.79%) FortiGate
8 1 (0.79%) Galera Cluster
8 1 (0.79%) Graphite
8 1 (0.79%) HAProxy
8 1 (0.79%) Packer
8 1 (0.79%) ZABBIX
Vendors
1 25 (19.84%) Microsoft
2 11 (8.73%) VMware
3 8 (6.35%) MuleSoft
4 6 (4.76%) Palo Alto
5 5 (3.97%) Adobe
5 5 (3.97%) Cisco
5 5 (3.97%) Pega
5 5 (3.97%) Salesforce.com
6 4 (3.17%) Google
6 4 (3.17%) IBM
6 4 (3.17%) Oracle
7 3 (2.38%) CommVault
7 3 (2.38%) Splunk
7 3 (2.38%) Verint
8 2 (1.59%) Cadence
8 2 (1.59%) Okta
8 2 (1.59%) Red Hat
9 1 (0.79%) CheckPoint
9 1 (0.79%) HP
9 1 (0.79%) Juniper