Period
to 18 January 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 18 January 2021 with a comparison to the same period in the previous 2 years.

JetBrains Kotlin
Central London > City of London
6 months to
18 Jan 2021
Same period 2020 Same period 2019
Rank 110 162 292
Rank change year-on-year +52 +130 +16
Permanent jobs citing Kotlin 111 155 44
As % of all permanent jobs advertised in the City of London 2.60% 1.70% 0.43%
As % of the Programming Languages category 4.07% 2.95% 0.68%
Number of salaries quoted 127 169 43
Median annual salary £75,000 £70,000 £77,500
Median salary % change year-on-year +7.14% -9.68% +6.90%
10th Percentile £47,500 £45,000 £57,700
90th Percentile £94,250 £106,500 £107,000
Central London median annual salary £75,000 £70,000 £75,000
% change year-on-year +7.14% -6.67% +7.14%

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 2,726 5,259 6,458
As % of all permanent IT jobs advertised in the City of London 63.81% 57.65% 62.88%
Number of salaries quoted 2,455 4,657 5,924
Median annual salary £72,500 £70,000 £65,000
Median salary % change year-on-year +3.57% +7.69% +4.00%
10th Percentile £46,250 £42,500 £40,250
90th Percentile £110,000 £102,500 £96,250
Central London median annual salary £70,000 £70,000 £65,000
% change year-on-year - +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 18 January 2021.

Salary histogram for Kotlin in the City of London

For the 6 months to 18 January 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.

1 102 (91.89%) Java
2 64 (57.66%) Agile Software Development
3 43 (38.74%) TDD
4 38 (34.23%) Scala
5 37 (33.33%) JavaScript
5 37 (33.33%) React
6 36 (32.43%) Docker
7 35 (31.53%) DevOps
8 34 (30.63%) Microservices
9 31 (27.93%) AWS
10 30 (27.03%) NoSQL
11 27 (24.32%) Python
12 24 (21.62%) Kubernetes
13 22 (19.82%) Android
14 21 (18.92%) TypeScript
14 21 (18.92%) Spring
15 20 (18.02%) Spring Boot
16 19 (17.12%) Kafka
17 18 (16.22%) Software Engineering
18 17 (15.32%) Jenkins
18 17 (15.32%) GCP
19 16 (14.41%) AngularJS
19 16 (14.41%) Degree
19 16 (14.41%) Banking
20 15 (13.51%) SQL
20 15 (13.51%) Mobile App
20 15 (13.51%) Node.js
20 15 (13.51%) Azure
21 14 (12.61%) MongoDB
21 14 (12.61%) Apple iOS

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 8 (7.21%) Apache Spark
2 4 (3.60%) Elasticsearch
Business Applications
1 5 (4.50%) R3 Corda
Cloud Services
1 31 (27.93%) AWS
2 17 (15.32%) GCP
3 15 (13.51%) Azure
4 5 (4.50%) Amazon Kinesis
5 3 (2.70%) GitHub
6 1 (0.90%) AWS Lambda
6 1 (0.90%) SaaS
6 1 (0.90%) Serverless
Database & Business Intelligence
1 30 (27.03%) NoSQL
2 14 (12.61%) MongoDB
3 9 (8.11%) Amazon DynamoDB
4 8 (7.21%) Apache Hive
4 8 (7.21%) Big Data
4 8 (7.21%) Hadoop
5 6 (5.41%) Apache Cassandra
6 5 (4.50%) MySQL
7 2 (1.80%) Blockchain
7 2 (1.80%) Redis
7 2 (1.80%) Scylla
8 1 (0.90%) BigQuery
8 1 (0.90%) Couchbase
8 1 (0.90%) Looker
8 1 (0.90%) RDBMS
8 1 (0.90%) Relational Database
Development Applications
1 17 (15.32%) Jenkins
2 13 (11.71%) Git (software)
3 9 (8.11%) Gradle
4 6 (5.41%) SonarQube
5 5 (4.50%) Android Studio
5 5 (4.50%) Appium
5 5 (4.50%) Cucumber
5 5 (4.50%) Maven
5 5 (4.50%) Selenium
6 3 (2.70%) CircleCI
6 3 (2.70%) IntelliJ
6 3 (2.70%) Travis CI
7 2 (1.80%) JIRA
8 1 (0.90%) git-flow
General
1 16 (14.41%) Banking
2 13 (11.71%) Finance
3 7 (6.31%) Retail Banking
4 6 (5.41%) Publishing
5 1 (0.90%) Investment Banking
Job Titles
1 69 (62.16%) Developer
2 33 (29.73%) Java Developer
3 9 (8.11%) Full Stack Developer
3 9 (8.11%) Java Engineer
4 8 (7.21%) Android Developer
4 8 (7.21%) Lead Developer
5 6 (5.41%) Lead Android Developer
6 5 (4.50%) Engineering Manager
6 5 (4.50%) Senior Developer
6 5 (4.50%) Software Engineer
7 4 (3.60%) Mobile Developer
8 3 (2.70%) Principal Engineer
8 3 (2.70%) React Developer
9 2 (1.80%) Artificial Intelligence Developer
9 2 (1.80%) Clojure Developer
9 2 (1.80%) Designer
9 2 (1.80%) Senior DevOps
9 2 (1.80%) Senior Full Stack Developer
9 2 (1.80%) Senior Java Engineer
9 2 (1.80%) Web Automation Tester
Libraries, Frameworks & Software Standards
1 37 (33.33%) React
2 21 (18.92%) Spring
3 20 (18.02%) Spring Boot
4 19 (17.12%) Kafka
5 16 (14.41%) AngularJS
6 15 (13.51%) Node.js
7 11 (9.91%) CSS
7 11 (9.91%) HTML
8 9 (8.11%) RxJava
9 8 (7.21%) HTML5
9 8 (7.21%) React Native
9 8 (7.21%) RESTful
10 4 (3.60%) Hibernate
10 4 (3.60%) J2EE
10 4 (3.60%) Java EE
10 4 (3.60%) JPA
11 3 (2.70%) Redux
11 3 (2.70%) Vert.x
11 3 (2.70%) Vue.js
12 2 (1.80%) JSON
Miscellaneous
1 15 (13.51%) Mobile App
2 9 (8.11%) Mobile Banking
3 7 (6.31%) Self-Motivation
4 6 (5.41%) User Experience
5 5 (4.50%) Video\Live Streaming
6 4 (3.60%) Analytical Skills
7 3 (2.70%) Foreign Exchange (FX)
8 2 (1.80%) Greenfield Project
9 1 (0.90%) Algorithms
Operating Systems
1 22 (19.82%) Android
2 14 (12.61%) Apple iOS
3 2 (1.80%) Linux
Processes & Methodologies
1 64 (57.66%) Agile Software Development
2 43 (38.74%) TDD
3 35 (31.53%) DevOps
4 34 (30.63%) Microservices
5 18 (16.22%) Software Engineering
6 14 (12.61%) Computer Science
7 13 (11.71%) Fintech
8 12 (10.81%) Continuous Delivery
8 12 (10.81%) Test Automation
9 11 (9.91%) Artificial Intelligence
10 9 (8.11%) Android Development
10 9 (8.11%) Continuous Integration
11 8 (7.21%) OO
11 8 (7.21%) Open Source
11 8 (7.21%) Project Delivery
12 7 (6.31%) Mentoring
13 6 (5.41%) Continuous Deployment
13 6 (5.41%) Digital Transformation Programme
13 6 (5.41%) Mobile Development
13 6 (5.41%) Push Notifications
Programming Languages
1 102 (91.89%) Java
2 38 (34.23%) Scala
3 37 (33.33%) JavaScript
4 27 (24.32%) Python
5 21 (18.92%) TypeScript
6 15 (13.51%) SQL
7 14 (12.61%) C#
8 11 (9.91%) ES6
9 9 (8.11%) Java 8
9 9 (8.11%) PHP
10 8 (7.21%) Clojure
11 6 (5.41%) Apple Swift
12 4 (3.60%) Haskell
13 3 (2.70%) C++
13 3 (2.70%) Go
13 3 (2.70%) Lisp
14 1 (0.90%) Rust
Qualifications
1 16 (14.41%) Degree
2 10 (9.01%) Computer Science Degree
Quality Assurance & Compliance
1 3 (2.70%) QA
System Software
1 36 (32.43%) Docker
Systems Management
1 24 (21.62%) Kubernetes
2 11 (9.91%) Terraform
3 3 (2.70%) Kibana
3 3 (2.70%) Pingdom
4 1 (0.90%) Ansible
4 1 (0.90%) Opscode Chef
4 1 (0.90%) Puppet
Vendors
1 3 (2.70%) Solace
2 1 (0.90%) Google