Period
to 30 July 2021

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

JetBrains Kotlin
England > London
6 months to
30 Jul 2021
Same period 2020 Same period 2019
Rank 146 180 336
Rank change year-on-year +34 +156 +162
Permanent jobs citing Kotlin 1,085 555 543
As % of all permanent jobs advertised in London 2.39% 1.95% 0.95%
As % of the Programming Languages category 3.89% 3.34% 1.70%
Number of salaries quoted 620 485 445
10th Percentile £56,250 £48,750 £50,000
25th Percentile £65,000 £56,250 £58,750
Median annual salary (50th Percentile) £85,000 £75,000 £70,000
Median % change year-on-year +13.33% +7.14% -
75th Percentile £105,000 £100,000 £86,250
90th Percentile £126,250 £128,750 £97,500
England median annual salary £75,000 £67,500 £65,000
% change year-on-year +11.11% +3.85% -3.70%

Kotlin is in the Programming Languages 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 coding skills.

All Programming Languages
London
Permanent vacancies with a requirement for coding skills 27,857 16,595 32,024
As % of all permanent IT jobs advertised in London 61.46% 58.29% 56.07%
Number of salaries quoted 17,722 13,799 27,246
10th Percentile £45,000 £42,500 £38,750
25th Percentile £55,000 £52,500 £48,750
Median annual salary (50th Percentile) £70,000 £70,000 £65,000
Median % change year-on-year - +7.69% +4.00%
75th Percentile £90,000 £87,500 £82,500
90th Percentile £107,500 £106,250 £97,500
England median annual salary £57,500 £55,000 £52,500
% change year-on-year +4.55% +4.76% +5.00%

Kotlin
Job Vacancy Trend in London

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

Job vacancy trend for Kotlin in London

Kotlin
Salary Trend in London

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

Salary trend for Kotlin in London

Kotlin
Salary Histogram in London

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

Salary histogram for Kotlin in London

Kotlin
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Kotlin 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 +3 122 £80,000 +10.34% 67
West London -19 23 £67,142 -13.37% 16
East London +8 7 £110,000 +37.50% 22
South London -3 6 £65,000 -1.89%
North London - 3 - -
Kotlin
England

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

1 879 (81.01%) Java
2 564 (51.98%) Agile Software Development
3 465 (42.86%) Software Engineering
4 434 (40.00%) Finance
5 429 (39.54%) AWS
6 402 (37.05%) React
7 370 (34.10%) JavaScript
8 369 (34.01%) TypeScript
9 336 (30.97%) Python
10 332 (30.60%) Docker
11 315 (29.03%) Kubernetes
12 310 (28.57%) TDD
13 304 (28.02%) Android
14 299 (27.56%) Microservices
15 286 (26.36%) Full Stack Development
16 270 (24.88%) Spring
17 268 (24.70%) Scala
18 239 (22.03%) SQL
19 214 (19.72%) DevOps
20 209 (19.26%) Azure
21 207 (19.08%) Social Skills
22 206 (18.99%) Git (software)
23 203 (18.71%) Spring Boot
24 202 (18.62%) Fintech
25 186 (17.14%) AngularJS
26 180 (16.59%) Node.js
27 178 (16.41%) Android Development
28 176 (16.22%) GCP
29 166 (15.30%) Kafka
30 165 (15.21%) Google

Kotlin
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
1 104 (9.59%) Apache
2 32 (2.95%) Confluence
3 26 (2.40%) Apache Pulsar
4 24 (2.21%) Apache Airflow
5 23 (2.12%) Apache Spark
6 17 (1.57%) Gunicorn
7 9 (0.83%) nginx
8 6 (0.55%) Elasticsearch
9 4 (0.37%) CMS
10 3 (0.28%) Ethereum
11 2 (0.18%) SAS
12 1 (0.092%) Oracle SOA Suite
Applications
1 43 (3.96%) Sketch
2 38 (3.50%) InVision
3 12 (1.11%) Figma
Business Applications
1 42 (3.87%) R3 Corda
2 41 (3.78%) Distributed Ledger
3 1 (0.092%) Dynamics NAV
3 1 (0.092%) Oracle Receivables
3 1 (0.092%) Sentinel
Cloud Services
1 429 (39.54%) AWS
2 209 (19.26%) Azure
3 176 (16.22%) GCP
4 124 (11.43%) Serverless
5 109 (10.05%) Amazon EC2
6 107 (9.86%) AWS Lambda
7 97 (8.94%) Amazon S3
8 93 (8.57%) SaaS
9 57 (5.25%) GitHub
10 46 (4.24%) Google Play
11 38 (3.50%) Firebase
12 29 (2.67%) Bitrise
13 20 (1.84%) Cloud Computing
14 12 (1.11%) Amazon SQS
15 11 (1.01%) AWS CloudFormation
16 7 (0.65%) npm
16 7 (0.65%) PaaS
17 6 (0.55%) Amazon EKS
17 6 (0.55%) BrowserStack
17 6 (0.55%) Datadog
Communications & Networking
1 44 (4.06%) HTTP
2 18 (1.66%) Broadband
3 12 (1.11%) SSL
4 9 (0.83%) RIP
5 5 (0.46%) Internet
6 4 (0.37%) FIX Connectivity
7 3 (0.28%) 5G
7 3 (0.28%) VoIP
8 1 (0.092%) Firewall
8 1 (0.092%) HTTPS
8 1 (0.092%) TCP/IP
8 1 (0.092%) Wi-Fi
Database & Business Intelligence
1 144 (13.27%) PostgreSQL
2 128 (11.80%) NoSQL
3 112 (10.32%) Amazon DynamoDB
4 77 (7.10%) Apache Ignite
5 74 (6.82%) MongoDB
6 45 (4.15%) Blockchain
7 34 (3.13%) Redis
7 34 (3.13%) Relational Database
7 34 (3.13%) SQL Server
8 32 (2.95%) MySQL
9 23 (2.12%) Data Warehouse
10 21 (1.94%) Amazon RDS
10 21 (1.94%) Apache Cassandra
10 21 (1.94%) Hadoop
10 21 (1.94%) RDBMS
11 20 (1.84%) Amazon Aurora
12 17 (1.57%) Big Data
13 15 (1.38%) Apache Hive
14 13 (1.20%) Aerospike
14 13 (1.20%) Data Lake
Development Applications
1 206 (18.99%) Git (software)
2 93 (8.57%) Jenkins
3 61 (5.62%) Gradle
3 61 (5.62%) JIRA
4 38 (3.50%) webpack
5 37 (3.41%) Bitbucket
6 34 (3.13%) git-flow
7 31 (2.86%) SonarQube
8 30 (2.76%) Babel
8 30 (2.76%) CircleCI
8 30 (2.76%) Cypress.io
8 30 (2.76%) Mercurial
9 29 (2.67%) Selenium
10 28 (2.58%) Mockito
11 27 (2.49%) JUnit
12 25 (2.30%) GitLab
13 24 (2.21%) Maven
13 24 (2.21%) PostCSS
14 19 (1.75%) Postman
15 15 (1.38%) fastlane
General
1 434 (40.00%) Finance
2 207 (19.08%) Social Skills
3 151 (13.92%) Front Office
4 128 (11.80%) Banking
5 58 (5.35%) Retail
6 57 (5.25%) Games
7 49 (4.52%) Analytical Skills
8 32 (2.95%) Billing
9 31 (2.86%) Retail Banking
10 25 (2.30%) Advertising
11 21 (1.94%) Presentation Skills
12 19 (1.75%) Automotive
13 15 (1.38%) Manufacturing
13 15 (1.38%) Publishing
13 15 (1.38%) Russian Language
14 12 (1.11%) Back Office
15 11 (1.01%) Financial Institution
15 11 (1.01%) Inclusion and Diversity
15 11 (1.01%) Public Speaking
16 9 (0.83%) Pharmaceutical
Job Titles
1 635 (58.53%) Developer
2 285 (26.27%) Software Engineer
3 163 (15.02%) Java Developer
4 137 (12.63%) Senior Developer
5 132 (12.17%) Android Developer
6 118 (10.88%) React Developer
7 89 (8.20%) Developer/Software Engineer
8 81 (7.47%) Python Developer
9 80 (7.37%) Lead Developer
10 77 (7.10%) Python Engineer
10 77 (7.10%) Python Software Engineer
11 63 (5.81%) Senior Software Engineer
12 58 (5.35%) Full Stack Developer
12 58 (5.35%) Senior Java Developer
13 56 (5.16%) JavaScript Developer
14 54 (4.98%) Front Office Developer
15 50 (4.61%) JavaScript Engineer
16 49 (4.52%) Senior Android Developer
17 44 (4.06%) Front End Developer (Client-Side Developer)
18 41 (3.78%) Java Engineer
Libraries, Frameworks & Software Standards
1 402 (37.05%) React
2 270 (24.88%) Spring
3 203 (18.71%) Spring Boot
4 186 (17.14%) AngularJS
5 180 (16.59%) Node.js
6 166 (15.30%) Kafka
7 155 (14.29%) REST
8 141 (13.00%) GraphQL
9 126 (11.61%) RESTful
10 121 (11.15%) Vue.js
10 121 (11.15%) Web Services
11 103 (9.49%) CSS
12 98 (9.03%) HTML
13 78 (7.19%) React Native
14 67 (6.18%) Redux
15 66 (6.08%) HTML5
16 46 (4.24%) Flutter
17 44 (4.06%) Middleware
18 43 (3.96%) CSS3
19 42 (3.87%) RabbitMQ
Miscellaneous
1 163 (15.02%) Mobile App
2 161 (14.84%) Equities
3 150 (13.82%) Fixed Income
3 150 (13.82%) Foreign Exchange (FX)
4 149 (13.73%) Derivative
5 130 (11.98%) Hedge funds
6 123 (11.34%) User Experience
7 73 (6.73%) Credit Risk
8 49 (4.52%) Data Structures
9 46 (4.24%) Algorithms
9 46 (4.24%) Virtual Team
10 39 (3.59%) Greenfield Project
11 38 (3.50%) Enterprise Software
12 32 (2.95%) Blog
13 30 (2.76%) Cloud Native
14 25 (2.30%) Self-Motivation
15 22 (2.03%) Legacy Applications
16 17 (1.57%) iPad
17 16 (1.47%) Social Media
17 16 (1.47%) Video\Live Streaming
Operating Systems
1 304 (28.02%) Android
2 157 (14.47%) Apple iOS
3 72 (6.64%) Linux
4 43 (3.96%) Unix
5 4 (0.37%) CentOS
6 1 (0.092%) Windows
Processes & Methodologies
1 564 (51.98%) Agile Software Development
2 465 (42.86%) Software Engineering
3 310 (28.57%) TDD
4 299 (27.56%) Microservices
5 286 (26.36%) Full Stack Development
6 214 (19.72%) DevOps
7 202 (18.62%) Fintech
8 178 (16.41%) Android Development
9 152 (14.01%) Problem-Solving
10 146 (13.46%) Test Automation
11 144 (13.27%) Asset Management
12 135 (12.44%) Continuous Integration
13 114 (10.51%) Mobile Development
14 106 (9.77%) Computer Science
15 104 (9.59%) Analytics
16 100 (9.22%) Pair Programming
17 91 (8.39%) Open Source
18 88 (8.11%) Continuous Delivery
19 85 (7.83%) Mentoring
20 83 (7.65%) BDD
Programming Languages
1 879 (81.01%) Java
2 370 (34.10%) JavaScript
3 369 (34.01%) TypeScript
4 336 (30.97%) Python
5 268 (24.70%) Scala
6 239 (22.03%) SQL
7 137 (12.63%) C#
8 128 (11.80%) C++
9 120 (11.06%) Apple Swift
10 119 (10.97%) Clojure
11 53 (4.88%) Java 8
12 52 (4.79%) ES6
13 47 (4.33%) Java 11
14 41 (3.78%) Go
14 41 (3.78%) Groovy
15 34 (3.13%) Dart
16 33 (3.04%) ES7
16 33 (3.04%) Objective-C
17 20 (1.84%) PHP
17 20 (1.84%) Ruby
Qualifications
1 80 (7.37%) Degree
2 47 (4.33%) Computer Science Degree
3 24 (2.21%) SANS
4 5 (0.46%) DBS Check
5 4 (0.37%) AWS Certification
6 1 (0.092%) Master's Degree
6 1 (0.092%) MBA
Quality Assurance & Compliance
1 86 (7.93%) QA
2 24 (2.21%) WCAG
3 20 (1.84%) GRC
4 6 (0.55%) Accessibility
5 4 (0.37%) GDPR
5 4 (0.37%) HIPAA
5 4 (0.37%) ISO/IEC 27001
5 4 (0.37%) SOC 2
6 2 (0.18%) Data Quality
System Software
1 332 (30.60%) Docker
2 11 (1.01%) ISA Server
Systems Management
1 315 (29.03%) Kubernetes
2 92 (8.48%) Terraform
3 35 (3.23%) Grafana
4 32 (2.95%) Prometheus
5 27 (2.49%) Puppet
6 18 (1.66%) Opscode Chef
7 11 (1.01%) Mesos
8 9 (0.83%) Istio
9 5 (0.46%) Ansible
10 4 (0.37%) Rancher
11 2 (0.18%) linkerd
11 2 (0.18%) ZABBIX
12 1 (0.092%) Kibana
12 1 (0.092%) Zipkin
Vendors
1 165 (15.21%) Google
2 26 (2.40%) Oracle
2 26 (2.40%) Salesforce.com
3 19 (1.75%) Microsoft
4 14 (1.29%) Apple
5 10 (0.92%) Xamarin
6 8 (0.74%) Atlassian
6 8 (0.74%) Intel
7 4 (0.37%) Red Hat
7 4 (0.37%) YouTube
8 3 (0.28%) Foundry
9 2 (0.18%) Adobe
9 2 (0.18%) AppDynamics
9 2 (0.18%) Facebook
9 2 (0.18%) Splunk
9 2 (0.18%) Twitter
10 1 (0.092%) Databricks
10 1 (0.092%) Dell
10 1 (0.092%) Samsung
10 1 (0.092%) SGI