Period
to 11 April 2021

The following table provides summary statistics for permanent job vacancies advertised in the City of 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 11 April 2021 with a comparison to the same period in the previous 2 years.

JetBrains Kotlin
Central London > City of London
6 months to
11 Apr 2021
Same period 2020 Same period 2019
Rank 106 178 262
Rank change year-on-year +72 +84 +33
Permanent jobs citing Kotlin 125 129 69
As % of all permanent jobs advertised in the City of London 2.58% 1.52% 0.67%
As % of the Programming Languages category 4.15% 2.74% 1.08%
Number of salaries quoted 120 116 66
10th Percentile £55,000 £50,000 £54,375
25th Percentile £57,500 £57,500 £65,313
Median annual salary (50th Percentile) £73,750 £70,000 £77,500
Median % change year-on-year +5.36% -9.68% -
75th Percentile £92,500 £92,500 £95,000
90th Percentile £97,500 £102,500 £132,500
Central London median annual salary £75,000 £70,000 £75,000
% change year-on-year +7.14% -6.67% +1.69%

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 the City of London with a requirement for coding skills.

All Programming Languages
City of London
Permanent vacancies with a requirement for coding skills 3,015 4,710 6,374
As % of all permanent IT jobs advertised in the City of London 62.28% 55.63% 61.96%
Number of salaries quoted 2,774 4,207 5,770
10th Percentile £45,000 £43,750 £40,250
25th Percentile £56,250 £52,500 £51,250
Median annual salary (50th Percentile) £72,500 £70,000 £67,500
Median % change year-on-year +3.57% +3.70% +8.00%
75th Percentile £90,000 £85,000 £82,500
90th Percentile £107,500 £105,000 £96,250
Central London median annual salary £72,500 £70,000 £65,000
% change year-on-year +3.57% +7.69% +8.33%

Kotlin
Job Vacancy Trend in the City of London

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

Job vacancy trend for Kotlin in the City of London

Kotlin
Salary Trend in the City of London

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

Salary trend for Kotlin in the City of London

Kotlin
Salary Histogram in the City of London

Salary distribution for jobs citing Kotlin in the City of London over the 6 months to 11 April 2021.

Salary histogram for Kotlin in the City of London

For the 6 months to 11 April 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 City of London region with a requirement for Kotlin.

1 110 (88.00%) Java
2 75 (60.00%) Agile Software Development
3 56 (44.80%) Microservices
4 46 (36.80%) JavaScript
5 45 (36.00%) TDD
5 45 (36.00%) AWS
6 44 (35.20%) Scala
7 42 (33.60%) React
8 40 (32.00%) NoSQL
9 39 (31.20%) Docker
10 36 (28.80%) DevOps
11 35 (28.00%) Kubernetes
12 31 (24.80%) Python
13 28 (22.40%) TypeScript
14 27 (21.60%) AngularJS
15 26 (20.80%) Fintech
16 25 (20.00%) Spring
16 25 (20.00%) Software Engineering
17 24 (19.20%) Degree
17 24 (19.20%) Kafka
18 23 (18.40%) Node.js
18 23 (18.40%) Android
18 23 (18.40%) Finance
18 23 (18.40%) C#
18 23 (18.40%) SQL
18 23 (18.40%) CSS
18 23 (18.40%) HTML
19 22 (17.60%) Azure
19 22 (17.60%) Spring Boot
20 21 (16.80%) ES6

Kotlin
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 18 (14.40%) Apache Spark
2 2 (1.60%) Elasticsearch
Applications
1 3 (2.40%) InVision
1 3 (2.40%) Sketch
Business Applications
1 6 (4.80%) R3 Corda
Cloud Services
1 45 (36.00%) AWS
2 22 (17.60%) Azure
3 19 (15.20%) GCP
4 4 (3.20%) Amazon Kinesis
5 2 (1.60%) GitHub
6 1 (0.80%) AWS Lambda
6 1 (0.80%) Firebase
6 1 (0.80%) Google Play
6 1 (0.80%) SaaS
6 1 (0.80%) Serverless
6 1 (0.80%) Slack
Database & Business Intelligence
1 40 (32.00%) NoSQL
2 19 (15.20%) MongoDB
3 18 (14.40%) Big Data
3 18 (14.40%) Hadoop
4 17 (13.60%) Apache Hive
5 14 (11.20%) Amazon DynamoDB
6 11 (8.80%) Apache Cassandra
7 5 (4.00%) MySQL
8 4 (3.20%) Amazon Aurora
8 4 (3.20%) PostgreSQL
9 3 (2.40%) Blockchain
10 1 (0.80%) BigQuery
10 1 (0.80%) Looker
10 1 (0.80%) RDBMS
10 1 (0.80%) Redis
10 1 (0.80%) Relational Database
Development Applications
1 20 (16.00%) Git (software)
2 11 (8.80%) Jenkins
3 7 (5.60%) Selenium
4 4 (3.20%) Android Studio
4 4 (3.20%) Appium
4 4 (3.20%) Babel
4 4 (3.20%) Cucumber
4 4 (3.20%) Gradle
5 3 (2.40%) CircleCI
5 3 (2.40%) Cypress.io
5 3 (2.40%) JIRA
5 3 (2.40%) Maven
5 3 (2.40%) PostCSS
5 3 (2.40%) SonarQube
5 3 (2.40%) Travis CI
6 2 (1.60%) IntelliJ
7 1 (0.80%) Bitbucket
7 1 (0.80%) git-flow
7 1 (0.80%) Mercurial
General
1 23 (18.40%) Finance
2 14 (11.20%) Banking
3 4 (3.20%) Billing
4 3 (2.40%) Publishing
4 3 (2.40%) Retail Banking
5 1 (0.80%) Games
5 1 (0.80%) Retail
Job Titles
1 71 (56.80%) Developer
2 44 (35.20%) Java Developer
3 12 (9.60%) Lead Developer
4 11 (8.80%) Java Engineer
5 10 (8.00%) Software Engineer
6 8 (6.40%) Senior Developer
7 7 (5.60%) Full Stack Developer
8 6 (4.80%) Android Developer
9 5 (4.00%) Backend Developer
9 5 (4.00%) Development Manager
9 5 (4.00%) Lead Java Developer
9 5 (4.00%) React Developer
9 5 (4.00%) Senior Java Developer
9 5 (4.00%) Software Development Manager
9 5 (4.00%) Software Manager
10 4 (3.20%) Mobile Developer
11 3 (2.40%) Agile Developer
11 3 (2.40%) Engineering Manager
11 3 (2.40%) Lead Android Developer
11 3 (2.40%) Principal Engineer
Libraries, Frameworks & Software Standards
1 42 (33.60%) React
2 27 (21.60%) AngularJS
3 25 (20.00%) Spring
4 24 (19.20%) Kafka
5 23 (18.40%) CSS
5 23 (18.40%) HTML
5 23 (18.40%) Node.js
6 22 (17.60%) Spring Boot
7 20 (16.00%) HTML5
8 17 (13.60%) RESTful
9 7 (5.60%) React Native
9 7 (5.60%) RxJava
10 5 (4.00%) J2EE
10 5 (4.00%) Java EE
10 5 (4.00%) Vue.js
11 4 (3.20%) Hibernate
11 4 (3.20%) JPA
11 4 (3.20%) RabbitMQ
12 3 (2.40%) CSS3
12 3 (2.40%) REST
Miscellaneous
1 12 (9.60%) Self-Motivation
2 10 (8.00%) Mobile App
2 10 (8.00%) Video\Live Streaming
3 7 (5.60%) User Experience
4 4 (3.20%) Credit Risk
5 3 (2.40%) Mobile Banking
6 2 (1.60%) Analytical Skills
6 2 (1.60%) Clustering
7 1 (0.80%) Foreign Exchange (FX)
7 1 (0.80%) Greenfield Project
7 1 (0.80%) Mobile Payment
7 1 (0.80%) Robotics
Operating Systems
1 23 (18.40%) Android
2 18 (14.40%) Apple iOS
3 2 (1.60%) Linux
Processes & Methodologies
1 75 (60.00%) Agile Software Development
2 56 (44.80%) Microservices
3 45 (36.00%) TDD
4 36 (28.80%) DevOps
5 26 (20.80%) Fintech
6 25 (20.00%) Software Engineering
7 21 (16.80%) Computer Science
8 18 (14.40%) Artificial Intelligence
9 17 (13.60%) OO
9 17 (13.60%) Open Source
9 17 (13.60%) Project Delivery
10 15 (12.00%) Continuous Delivery
11 14 (11.20%) Test Automation
12 13 (10.40%) Continuous Integration
12 13 (10.40%) Mobile Development
13 10 (8.00%) Android Development
13 10 (8.00%) SDLC
14 6 (4.80%) Investment Management
14 6 (4.80%) Mentoring
15 5 (4.00%) Scrum
Programming Languages
1 110 (88.00%) Java
2 46 (36.80%) JavaScript
3 44 (35.20%) Scala
4 31 (24.80%) Python
5 28 (22.40%) TypeScript
6 23 (18.40%) C#
6 23 (18.40%) SQL
7 21 (16.80%) ES6
8 17 (13.60%) PHP
9 16 (12.80%) Java 8
10 10 (8.00%) Apple Swift
10 10 (8.00%) Clojure
11 3 (2.40%) ES7
12 2 (1.60%) C++
12 2 (1.60%) Go
13 1 (0.80%) Haskell
13 1 (0.80%) Lisp
Qualifications
1 24 (19.20%) Degree
2 18 (14.40%) Computer Science Degree
3 3 (2.40%) SANS
Quality Assurance & Compliance
1 8 (6.40%) QA
2 3 (2.40%) WCAG
System Software
1 39 (31.20%) Docker
Systems Management
1 35 (28.00%) Kubernetes
2 6 (4.80%) Terraform
3 1 (0.80%) Kibana
3 1 (0.80%) Pingdom
Vendors
1 4 (3.20%) Google
2 1 (0.80%) Adobe
2 1 (0.80%) Solace