Period
to 15 June 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 15 June 2021 with a comparison to the same period in the previous 2 years.

JetBrains Kotlin
Central London > City of London
6 months to
15 Jun 2021
Same period 2020 Same period 2019
Rank 132 148 239
Rank change year-on-year +16 +91 +37
Permanent jobs citing Kotlin 107 109 99
As % of all permanent jobs advertised in the City of London 2.07% 1.72% 0.98%
As % of the Programming Languages category 3.33% 3.03% 1.60%
Number of salaries quoted 104 102 94
10th Percentile £57,500 £42,500 £50,675
25th Percentile £59,375 £55,313 £59,063
Median annual salary (50th Percentile) £80,000 £70,000 £76,250
Median % change year-on-year +14.29% -8.20% -1.61%
75th Percentile £92,813 £89,375 £95,000
90th Percentile £97,500 £95,000 £120,875
Central London median annual salary £80,000 £70,000 £72,500
% change year-on-year +14.29% -3.45% -3.33%

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 3,217 3,597 6,171
As % of all permanent IT jobs advertised in the City of London 62.20% 56.74% 61.39%
Number of salaries quoted 2,954 3,223 5,570
10th Percentile £45,000 £43,750 £41,250
25th Percentile £56,250 £52,500 £52,500
Median annual salary (50th Percentile) £75,000 £70,000 £67,500
Median % change year-on-year +7.14% +3.70% +3.85%
75th Percentile £90,000 £86,250 £82,500
90th Percentile £107,500 £105,000 £95,575
Central London median annual salary £72,500 £70,000 £65,000
% change year-on-year +3.57% +7.69% +4.00%

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 15 June 2021.

Salary histogram for Kotlin in the City of London

For the 6 months to 15 June 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 92 (85.98%) Java
2 68 (63.55%) Agile Software Development
3 56 (52.34%) Microservices
4 42 (39.25%) Scala
5 41 (38.32%) AWS
6 37 (34.58%) TDD
7 36 (33.64%) Kubernetes
8 33 (30.84%) NoSQL
9 31 (28.97%) JavaScript
10 30 (28.04%) React
10 30 (28.04%) DevOps
11 27 (25.23%) Docker
12 26 (24.30%) Azure
12 26 (24.30%) Fintech
13 24 (22.43%) Kafka
14 23 (21.50%) AngularJS
14 23 (21.50%) TypeScript
15 22 (20.56%) Apache Spark
15 22 (20.56%) Hadoop
15 22 (20.56%) Finance
16 21 (19.63%) GCP
16 21 (19.63%) ES6
17 20 (18.69%) Java 8
17 20 (18.69%) HTML5
17 20 (18.69%) CSS
17 20 (18.69%) HTML
17 20 (18.69%) Software Engineering
18 19 (17.76%) Spring
18 19 (17.76%) Node.js
19 18 (16.82%) MongoDB

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 22 (20.56%) Apache Spark
2 1 (0.93%) Elasticsearch
Applications
1 3 (2.80%) InVision
1 3 (2.80%) Sketch
Business Applications
1 3 (2.80%) R3 Corda
Cloud Services
1 41 (38.32%) AWS
2 26 (24.30%) Azure
3 21 (19.63%) GCP
4 2 (1.87%) Firebase
4 2 (1.87%) GitHub
5 1 (0.93%) AppsFlyer
5 1 (0.93%) Google Play
5 1 (0.93%) Pushwoosh
5 1 (0.93%) Slack
Communications & Networking
1 1 (0.93%) Internet
Database & Business Intelligence
1 33 (30.84%) NoSQL
2 22 (20.56%) Hadoop
3 18 (16.82%) Big Data
3 18 (16.82%) MongoDB
4 17 (15.89%) Apache Hive
5 13 (12.15%) Apache Cassandra
6 12 (11.21%) Amazon DynamoDB
7 5 (4.67%) Amazon Aurora
7 5 (4.67%) PostgreSQL
8 1 (0.93%) Blockchain
Development Applications
1 17 (15.89%) Git (software)
2 5 (4.67%) Babel
3 3 (2.80%) Cypress.io
3 3 (2.80%) PostCSS
3 3 (2.80%) Selenium
4 2 (1.87%) fastlane
4 2 (1.87%) IntelliJ
5 1 (0.93%) Bitbucket
5 1 (0.93%) Gradle
5 1 (0.93%) Jenkins
5 1 (0.93%) JIRA
5 1 (0.93%) Maven
5 1 (0.93%) Mercurial
General
1 22 (20.56%) Finance
2 12 (11.21%) Banking
3 6 (5.61%) Social Skills
4 5 (4.67%) Billing
5 4 (3.74%) Retail Banking
6 2 (1.87%) Retail
7 1 (0.93%) Front Office
7 1 (0.93%) Games
7 1 (0.93%) Wearables
Job Titles
1 68 (63.55%) Developer
2 48 (44.86%) Java Developer
3 16 (14.95%) Lead Developer
4 12 (11.21%) Backend Developer
5 9 (8.41%) Senior Developer
6 8 (7.48%) Java Engineer
6 8 (7.48%) Lead Java Developer
6 8 (7.48%) Senior Java Developer
7 7 (6.54%) Software Engineer
8 6 (5.61%) Full Stack Developer
9 5 (4.67%) Development Manager
9 5 (4.67%) Software Development Manager
9 5 (4.67%) Software Manager
10 4 (3.74%) AWS Developer
10 4 (3.74%) Java Scala Developer
10 4 (3.74%) React Developer
10 4 (3.74%) Scala Developer
11 3 (2.80%) Agile Developer
11 3 (2.80%) Android Engineer
11 3 (2.80%) Node.js Developer
Libraries, Frameworks & Software Standards
1 30 (28.04%) React
2 24 (22.43%) Kafka
3 23 (21.50%) AngularJS
4 20 (18.69%) CSS
4 20 (18.69%) HTML
4 20 (18.69%) HTML5
5 19 (17.76%) Node.js
5 19 (17.76%) Spring
6 18 (16.82%) RESTful
7 13 (12.15%) Spring Boot
8 9 (8.41%) RabbitMQ
9 8 (7.48%) REST
10 6 (5.61%) Hibernate
11 5 (4.67%) React Native
12 4 (3.74%) J2EE
12 4 (3.74%) Java EE
13 3 (2.80%) CSS3
13 3 (2.80%) JPA
13 3 (2.80%) RxJava
13 3 (2.80%) Spring MVC
Miscellaneous
1 16 (14.95%) Self-Motivation
2 12 (11.21%) Video\Live Streaming
3 7 (6.54%) Clustering
4 5 (4.67%) Credit Risk
4 5 (4.67%) Greenfield Project
4 5 (4.67%) Mobile App
4 5 (4.67%) User Experience
5 1 (0.93%) Credit Derivative
5 1 (0.93%) Mobile Payment
5 1 (0.93%) Online Banking
5 1 (0.93%) PKI
5 1 (0.93%) Robotics
5 1 (0.93%) Wiki
Operating Systems
1 12 (11.21%) Android
2 7 (6.54%) Apple iOS
3 2 (1.87%) Unix
4 1 (0.93%) Linux
Processes & Methodologies
1 68 (63.55%) Agile Software Development
2 56 (52.34%) Microservices
3 37 (34.58%) TDD
4 30 (28.04%) DevOps
5 26 (24.30%) Fintech
6 20 (18.69%) Software Engineering
7 18 (16.82%) Artificial Intelligence
7 18 (16.82%) Open Source
8 17 (15.89%) Computer Science
8 17 (15.89%) OO
8 17 (15.89%) Project Delivery
9 12 (11.21%) Continuous Delivery
9 12 (11.21%) Continuous Integration
10 10 (9.35%) Mobile Development
10 10 (9.35%) SDLC
11 9 (8.41%) Android Development
12 7 (6.54%) Mentoring
13 6 (5.61%) Coaching
14 5 (4.67%) Test Automation
15 4 (3.74%) MVVM
Programming Languages
1 92 (85.98%) Java
2 42 (39.25%) Scala
3 31 (28.97%) JavaScript
4 23 (21.50%) TypeScript
5 21 (19.63%) ES6
6 20 (18.69%) Java 8
7 18 (16.82%) Python
7 18 (16.82%) SQL
8 17 (15.89%) C#
8 17 (15.89%) PHP
9 7 (6.54%) Clojure
10 6 (5.61%) Apple Swift
11 3 (2.80%) ES7
12 1 (0.93%) C++
Qualifications
1 17 (15.89%) Computer Science Degree
1 17 (15.89%) Degree
2 3 (2.80%) SANS
Quality Assurance & Compliance
1 9 (8.41%) QA
2 3 (2.80%) WCAG
System Software
1 27 (25.23%) Docker
Systems Management
1 36 (33.64%) Kubernetes
2 5 (4.67%) Terraform
3 4 (3.74%) Prometheus
4 1 (0.93%) Kibana
4 1 (0.93%) Pingdom
Vendors
1 8 (7.48%) Google
2 1 (0.93%) Adobe