Period
to 6 April 2020

The following table provides summary statistics for contract job vacancies advertised in Central London with a requirement for Kotlin skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Kotlin over the 6 months to 6 April 2020 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

JetBrains Kotlin
London > Central London
6 months to
6 Apr 2020
Same period 2019 Same period 2018
Rank 138 198 248
Rank change year-on-year +60 +50 -6
Contract jobs citing Kotlin 65 92 45
As % of all contract jobs advertised in Central London 1.24% 1.02% 0.49%
As % of the Programming Languages category 2.52% 1.95% 0.93%
Number of daily rates quoted 60 80 44
Median daily rate £544 £580 £575
Median daily rate % change year-on-year -6.25% +0.87% -8.00%
10th Percentile £376 £425 £440
90th Percentile £638 £728 £713
London median daily rate £550 £550 £540
% change year-on-year - +1.85% -13.60%
Number of hourly rates quoted 2 0 0
Median hourly rate £55.00 - -
London median hourly rate £61.50 £55.40 -
% change year-on-year +11.01% - -

Kotlin is in the Programming Languages category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Central London with a requirement for coding skills.

All Programming Languages
Central London
Contract vacancies with a requirement for coding skills 2,576 4,711 4,853
As % of all contract IT jobs advertised in Central London 49.14% 52.39% 52.59%
Number of daily rates quoted 1,953 3,744 4,082
Median daily rate £525 £525 £513
Median daily rate % change year-on-year - +2.44% +7.89%
10th Percentile £375 £381 £363
90th Percentile £675 £675 £688
London median daily rate £525 £525 £500
% change year-on-year - +5.00% +5.26%
Number of hourly rates quoted 22 16 23
Median hourly rate £35.00 £28.75 £21.50
Median hourly rate % change year-on-year +21.74% +33.72% -24.15%
10th Percentile £24.50 £18.32 £17.55
90th Percentile £57.05 £63.25 £67.50
Median hourly rate £44.02 £36.00 £35.00
% change year-on-year +22.28% +2.86% -20.45%

Kotlin
Job Vacancy Trend in Central London

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

Job vacancy trend for Kotlin in Central London

Kotlin
Contractor Daily Rate Trend in Central London

3-month moving average daily rate quoted in jobs citing Kotlin in Central London.

Daily rate trend for Kotlin in Central London

Kotlin
Daily Rate Histogram in Central London

Daily rate distribution for jobs citing Kotlin in Central London over the 6 months to 6 April 2020.

Daily rate histogram for Kotlin in Central London

Kotlin
Contract Job Locations in Central London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Kotlin within the Central London region over the 6 months to 6 April 2020. 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London +48 60 £531 -8.41% 33
Kotlin
London

For the 6 months to 6 April 2020, IT contractor 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 contract job ads across the Central London region with a requirement for Kotlin.

1 45 (69.23%) Java
2 32 (49.23%) Agile Software Development
3 29 (44.62%) Android
4 25 (38.46%) Spring
5 24 (36.92%) Android Development
6 22 (33.85%) RxJava
7 21 (32.31%) RESTful
7 21 (32.31%) TDD
8 19 (29.23%) Git (software)
9 17 (26.15%) JavaScript
10 15 (23.08%) User Experience
11 14 (21.54%) Microservices
11 14 (21.54%) Greenfield Project
11 14 (21.54%) Mobile App
12 13 (20.00%) Jenkins
12 13 (20.00%) GitHub
12 13 (20.00%) JUnit
13 12 (18.46%) HTML
13 12 (18.46%) CSS
13 12 (18.46%) Apple iOS
13 12 (18.46%) Continuous Integration
14 11 (16.92%) SDLC
15 10 (15.38%) git-flow
15 10 (15.38%) Mobile Development
15 10 (15.38%) HTML5
15 10 (15.38%) Open Source
15 10 (15.38%) Gradle
16 9 (13.85%) Mobile Payment
16 9 (13.85%) Mockito
16 9 (13.85%) Waterfall

Kotlin
Co-occurring IT Skills in Central 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 7 (10.77%) WebLogic
1 7 (10.77%) WebSphere
2 2 (3.08%) Cloud Foundry
3 1 (1.54%) Apache Spark
3 1 (1.54%) Confluence
Cloud Services
1 13 (20.00%) GitHub
2 9 (13.85%) AWS
3 5 (7.69%) AWS Lambda
3 5 (7.69%) Serverless
4 3 (4.62%) Azure
5 2 (3.08%) Firebase
6 1 (1.54%) GCP
6 1 (1.54%) Google Play
Communications & Networking
1 7 (10.77%) HTTP
2 2 (3.08%) HTTPS
3 1 (1.54%) SSL
Database & Business Intelligence
1 2 (3.08%) NoSQL
1 2 (3.08%) SQLite
2 1 (1.54%) Oracle Database
Development Applications
1 19 (29.23%) Git (software)
2 13 (20.00%) Jenkins
2 13 (20.00%) JUnit
3 10 (15.38%) git-flow
3 10 (15.38%) Gradle
4 9 (13.85%) Mockito
5 8 (12.31%) Maven
6 7 (10.77%) Ant
6 7 (10.77%) JMeter
7 6 (9.23%) Android Studio
8 2 (3.08%) JIRA
8 2 (3.08%) Xcode
9 1 (1.54%) CruiseControl
9 1 (1.54%) Cucumber
9 1 (1.54%) GoCD
9 1 (1.54%) Selenium
9 1 (1.54%) Subversion
9 1 (1.54%) TeamCity
9 1 (1.54%) WebDriver
General
1 9 (13.85%) Finance
2 8 (12.31%) Banking
3 6 (9.23%) Games
4 4 (6.15%) Advertising
4 4 (6.15%) Marketing
5 3 (4.62%) Automotive
6 1 (1.54%) Retail Banking
Job Titles
1 52 (80.00%) Developer
2 21 (32.31%) Android Developer
3 13 (20.00%) Java Developer
4 5 (7.69%) Full Stack Developer
5 4 (6.15%) Applications Developer
5 4 (6.15%) Facebook Developer
5 4 (6.15%) Java Engineer
5 4 (6.15%) Senior Developer
6 3 (4.62%) Android Engineer
6 3 (4.62%) Engineering Manager
6 3 (4.62%) Java Software Engineer
6 3 (4.62%) Ruby Developer
6 3 (4.62%) Senior Android Developer
6 3 (4.62%) Software Engineer
7 2 (3.08%) iOS Developer
7 2 (3.08%) Mobile Developer
7 2 (3.08%) Python Developer
8 1 (1.54%) Java Software Developer
8 1 (1.54%) JavaScript Developer
8 1 (1.54%) Senior Java Software Developer
Libraries, Frameworks & Software Standards
1 25 (38.46%) Spring
2 22 (33.85%) RxJava
3 21 (32.31%) RESTful
4 12 (18.46%) CSS
4 12 (18.46%) HTML
5 10 (15.38%) HTML5
6 9 (13.85%) J2EE
6 9 (13.85%) Spring Boot
6 9 (13.85%) Web Services
7 8 (12.31%) REST
8 7 (10.77%) Android SDK
8 7 (10.77%) GraphQL
8 7 (10.77%) JSON
8 7 (10.77%) SOAP
8 7 (10.77%) XML
9 6 (9.23%) React
10 5 (7.69%) iOS SDK
10 5 (7.69%) Material Design
11 4 (6.15%) Redux
11 4 (6.15%) Ruby on Rails
Miscellaneous
1 15 (23.08%) User Experience
2 14 (21.54%) Greenfield Project
2 14 (21.54%) Mobile App
3 9 (13.85%) Mobile Payment
4 7 (10.77%) Enterprise Software
5 5 (7.69%) Data Structures
6 4 (6.15%) Marketing Technology
7 1 (1.54%) Algorithms
7 1 (1.54%) Analytical Skills
7 1 (1.54%) Mobile Banking
7 1 (1.54%) Self-Motivation
Operating Systems
1 29 (44.62%) Android
2 12 (18.46%) Apple iOS
3 1 (1.54%) Linux
Processes & Methodologies
1 32 (49.23%) Agile Software Development
2 24 (36.92%) Android Development
3 21 (32.31%) TDD
4 14 (21.54%) Microservices
5 12 (18.46%) Continuous Integration
6 11 (16.92%) SDLC
7 10 (15.38%) Mobile Development
7 10 (15.38%) Open Source
8 9 (13.85%) Fintech
8 9 (13.85%) Thought Leadership
8 9 (13.85%) Waterfall
9 8 (12.31%) API Development
9 8 (12.31%) Computer Science
9 8 (12.31%) MVVM
10 7 (10.77%) Pair Programming
10 7 (10.77%) Scrum
11 6 (9.23%) Multithreaded Programming
11 6 (9.23%) Multithreading
11 6 (9.23%) Software Engineering
11 6 (9.23%) Web Development
Programming Languages
1 45 (69.23%) Java
2 17 (26.15%) JavaScript
3 7 (10.77%) Apple Swift
3 7 (10.77%) Scala
4 6 (9.23%) Python
5 4 (6.15%) Ruby
6 3 (4.62%) C
6 3 (4.62%) Java 8
7 2 (3.08%) Objective-C
8 1 (1.54%) Bash Shell
8 1 (1.54%) C#
8 1 (1.54%) C++
8 1 (1.54%) Clojure
8 1 (1.54%) SQL
Qualifications
1 7 (10.77%) Degree
2 6 (9.23%) Computer Science Degree
Quality Assurance & Compliance
1 1 (1.54%) QA
System Software
1 3 (4.62%) Docker
Systems Management
1 2 (3.08%) Kubernetes
1 2 (3.08%) Prometheus
2 1 (1.54%) Grafana
2 1 (1.54%) Zipkin
Vendors
1 7 (10.77%) Google
2 5 (7.69%) CA
2 5 (7.69%) CA Agile Central
3 4 (6.15%) Facebook
4 3 (4.62%) Salesforce.com
5 1 (1.54%) Oracle
5 1 (1.54%) Perforce
5 1 (1.54%) TOWER Software