Period
to 17 September 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 17 September 2021 with a comparison to the same period in the previous 2 years.

JetBrains Kotlin
Central London > City of London
6 months to
17 Sep 2021
Same period 2020 Same period 2019
Rank 129 100 204
Rank change year-on-year -29 +104 +95
Permanent jobs citing Kotlin 130 105 140
As % of all permanent jobs advertised in the City of London 2.21% 2.64% 1.38%
As % of the Programming Languages category 3.69% 4.34% 2.27%
Number of salaries quoted 107 101 128
10th Percentile £55,750 £42,500 £45,000
25th Percentile £61,250 £57,500 £55,000
Median annual salary (50th Percentile) £80,000 £72,500 £72,500
Median % change year-on-year +10.34% - -14.71%
75th Percentile £93,125 £82,500 £85,000
90th Percentile £98,750 £93,750 £95,000
Central London median annual salary £80,000 £72,500 £70,000
% change year-on-year +10.34% +3.57% -12.50%

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 3,527 2,419 6,166
As % of all permanent IT jobs advertised in the City of London 59.89% 60.76% 60.87%
Number of salaries quoted 3,176 2,129 5,509
10th Percentile £46,250 £45,000 £42,500
25th Percentile £56,250 £55,000 £52,500
Median annual salary (50th Percentile) £75,000 £70,000 £70,000
Median % change year-on-year +7.14% - +7.69%
75th Percentile £95,000 £87,500 £83,750
90th Percentile £107,875 £107,500 £97,500
Central London median annual salary £75,000 £70,000 £67,500
% change year-on-year +7.14% +3.70% +3.85%

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 17 September 2021.

Salary histogram for Kotlin in the City of London

For the 6 months to 17 September 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.

1 115 (88.46%) Java
2 58 (44.62%) Agile Software Development
2 58 (44.62%) AWS
3 51 (39.23%) Scala
4 48 (36.92%) JavaScript
5 43 (33.08%) Microservices
6 38 (29.23%) Kubernetes
7 36 (27.69%) PHP
7 36 (27.69%) DevOps
8 33 (25.38%) SDLC
9 31 (23.85%) C#
9 31 (23.85%) Azure
10 30 (23.08%) Software Engineering
10 30 (23.08%) TDD
11 29 (22.31%) Python
11 29 (22.31%) Docker
11 29 (22.31%) Social Skills
12 27 (20.77%) Apple Swift
12 27 (20.77%) Mentoring
12 27 (20.77%) OO
13 24 (18.46%) Spring
13 24 (18.46%) GCP
13 24 (18.46%) Kafka
14 23 (17.69%) Fintech
14 23 (17.69%) C++
15 21 (16.15%) Objective-C
15 21 (16.15%) AngularJS
16 20 (15.38%) R
16 20 (15.38%) Dart
16 20 (15.38%) MATLAB

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 13 (10.00%) Apache Spark
2 4 (3.08%) SAS
Business Applications
1 1 (0.77%) R3 Corda
Cloud Services
1 58 (44.62%) AWS
2 31 (23.85%) Azure
3 24 (18.46%) GCP
4 9 (6.92%) AWS CloudFormation
4 9 (6.92%) npm
5 4 (3.08%) Bitrise
6 2 (1.54%) Firebase
7 1 (0.77%) AppsFlyer
7 1 (0.77%) GitHub
7 1 (0.77%) Google Play
7 1 (0.77%) Pushwoosh
7 1 (0.77%) Serverless
7 1 (0.77%) Slack
Communications & Networking
1 1 (0.77%) Internet
Database & Business Intelligence
1 16 (12.31%) NoSQL
2 13 (10.00%) Hadoop
2 13 (10.00%) MongoDB
3 8 (6.15%) Amazon DynamoDB
3 8 (6.15%) Apache Cassandra
3 8 (6.15%) Big Data
4 7 (5.38%) Apache Hive
5 6 (4.62%) PostgreSQL
6 4 (3.08%) Amazon Aurora
7 1 (0.77%) MySQL
7 1 (0.77%) OLTP
7 1 (0.77%) Redis
Development Applications
1 16 (12.31%) Git (software)
2 10 (7.69%) Jenkins
3 9 (6.92%) Bower
3 9 (6.92%) Grunt
3 9 (6.92%) webpack
4 5 (3.85%) Selenium
5 4 (3.08%) Babel
5 4 (3.08%) Cypress.io
6 3 (2.31%) fastlane
6 3 (2.31%) Maven
7 2 (1.54%) Appium
8 1 (0.77%) Bitbucket
8 1 (0.77%) CircleCI
8 1 (0.77%) IntelliJ
8 1 (0.77%) JIRA
8 1 (0.77%) Mercurial
8 1 (0.77%) TeamCity
General
1 29 (22.31%) Social Skills
2 15 (11.54%) Finance
3 10 (7.69%) Banking
4 6 (4.62%) Retail
5 5 (3.85%) Retail Banking
6 4 (3.08%) Billing
7 3 (2.31%) Analytical Skills
7 3 (2.31%) Front Office
8 1 (0.77%) Games
8 1 (0.77%) Public Speaking
8 1 (0.77%) Wearables
Job Titles
1 88 (67.69%) Developer
2 37 (28.46%) Java Developer
3 24 (18.46%) Lead Developer
4 18 (13.85%) Software Engineer
5 17 (13.08%) Salesforce Developer
5 17 (13.08%) Software Developer
6 15 (11.54%) Backend Developer
7 12 (9.23%) Senior Developer
8 11 (8.46%) Senior Java Developer
9 10 (7.69%) Java Engineer
10 9 (6.92%) PHP Developer
11 8 (6.15%) Developer/Software Engineer
11 8 (6.15%) Development Manager
11 8 (6.15%) Java Development Manager
11 8 (6.15%) Salesforce Software Engineer
11 8 (6.15%) Software Development Manager
11 8 (6.15%) Software Manager
12 7 (5.38%) Lead PHP Developer
13 5 (3.85%) Android Developer
13 5 (3.85%) Lead Java Developer
Libraries, Frameworks & Software Standards
1 24 (18.46%) Kafka
1 24 (18.46%) Spring
2 21 (16.15%) AngularJS
3 20 (15.38%) .NET
4 18 (13.85%) CSS
4 18 (13.85%) HTML
4 18 (13.85%) Spring Boot
5 17 (13.08%) React
6 16 (12.31%) HTML5
7 12 (9.23%) Node.js
7 12 (9.23%) REST
8 9 (6.92%) CSS3
8 9 (6.92%) Laravel
8 9 (6.92%) LEMP Stack
8 9 (6.92%) LESS
8 9 (6.92%) RabbitMQ
8 9 (6.92%) Sass
8 9 (6.92%) Vue.js
8 9 (6.92%) Vuetify.js
8 9 (6.92%) Web Services
Miscellaneous
1 13 (10.00%) Mobile App
2 12 (9.23%) Self-Motivation
3 11 (8.46%) Clustering
4 7 (5.38%) Greenfield Project
4 7 (5.38%) Video\Live Streaming
5 4 (3.08%) Credit Risk
5 4 (3.08%) SWIFT
6 3 (2.31%) User Experience
7 1 (0.77%) Cloud Native
7 1 (0.77%) Credit Derivative
7 1 (0.77%) Mobile Payment
7 1 (0.77%) Online Banking
7 1 (0.77%) PKI
7 1 (0.77%) Robotics
7 1 (0.77%) Wiki
Operating Systems
1 17 (13.08%) Android
2 11 (8.46%) Apple iOS
3 2 (1.54%) Unix
4 1 (0.77%) Linux
Processes & Methodologies
1 58 (44.62%) Agile Software Development
2 43 (33.08%) Microservices
3 36 (27.69%) DevOps
4 33 (25.38%) SDLC
5 30 (23.08%) Software Engineering
5 30 (23.08%) TDD
6 27 (20.77%) Mentoring
6 27 (20.77%) OO
7 23 (17.69%) Fintech
8 20 (15.38%) CRM
8 20 (15.38%) OOP
9 12 (9.23%) MVC
9 12 (9.23%) Test Automation
10 10 (7.69%) Software Architecture
11 9 (6.92%) OWASP
11 9 (6.92%) Web Development
12 8 (6.15%) Android Development
12 8 (6.15%) Continuous Delivery
12 8 (6.15%) Mobile Development
12 8 (6.15%) Open Source
Programming Languages
1 115 (88.46%) Java
2 51 (39.23%) Scala
3 48 (36.92%) JavaScript
4 36 (27.69%) PHP
5 31 (23.85%) C#
6 29 (22.31%) Python
7 27 (20.77%) Apple Swift
8 23 (17.69%) C++
9 21 (16.15%) Objective-C
10 20 (15.38%) Dart
10 20 (15.38%) MATLAB
10 20 (15.38%) Pascal
10 20 (15.38%) Perl
10 20 (15.38%) R
10 20 (15.38%) Ruby
10 20 (15.38%) VB.NET
11 15 (11.54%) Java 8
12 11 (8.46%) SQL
13 8 (6.15%) TypeScript
14 7 (5.38%) ES6
Qualifications
1 7 (5.38%) Computer Science Degree
1 7 (5.38%) Degree
Quality Assurance & Compliance
1 7 (5.38%) QA
2 4 (3.08%) Accessibility
System Software
1 29 (22.31%) Docker
2 1 (0.77%) ISA Server
Systems Management
1 38 (29.23%) Kubernetes
2 6 (4.62%) Prometheus
2 6 (4.62%) Terraform
3 1 (0.77%) Grafana
3 1 (0.77%) Mesos
Vendors
1 20 (15.38%) Salesforce.com
2 15 (11.54%) Google
3 1 (0.77%) Adobe