Period
to 13 November 2019

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 13 November 2019 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
13 Nov 2019
Same period 2018 Same period 2017
Rank 173 200 252
Rank change year-on-year +27 +52 -
Contract jobs citing Kotlin 85 97 26
As % of all contract IT jobs advertised in Central London 1.13% 1.06% 0.31%
As % of the Programming Languages category 2.28% 1.97% 0.60%
Number of daily rates quoted 77 93 17
Central London median daily rate £550 £550 £565
Median daily rate % change year-on-year - -2.65% -
10th Percentile £396 £424 £425
90th Percentile £688 £770 £688
London median daily rate £550 £525 £540
% change year-on-year +4.76% -2.78% -6.09%
Number of hourly rates quoted 0 0 0
Central London median hourly rate - - -
London median hourly rate £48.85 - -

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 3,736 4,921 4,315
As % of all contract IT jobs advertised in Central London 49.80% 53.70% 51.19%
Number of daily rates quoted 2,990 4,041 3,527
Central London median daily rate £525 £525 £513
Median daily rate % change year-on-year - +2.44% +7.89%
10th Percentile £381 £363 £363
90th Percentile £675 £675 £675
London median daily rate £525 £525 £500
% change year-on-year - +5.00% +8.11%
Number of hourly rates quoted 12 9 20
Central London median hourly rate £31.50 £37.09 £22.99
Median hourly rate % change year-on-year -15.07% +61.31% -16.39%
10th Percentile £21.02 £16.90 £13.35
90th Percentile £55.18 £63.70 £45.80
London median hourly rate £45.25 £37.09 £35.50
% change year-on-year +22.00% +4.48% +9.23%

Kotlin
Job Vacancy Trend in Central London

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

Job vacancy trend for Kotlin in Central London

Kotlin
Contractor Daily Rate Trend in Central London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Kotlin in Central London.

Contractor daily rate trend for Kotlin in Central London

Kotlin
Contractor Daily Rate Histogram in Central London

The daily rate distribution of IT jobs citing Kotlin in Central London over the 6 months to 13 November 2019.

Contractor 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 13 November 2019. 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 +11 66 £563 -3.02% 61
West End of London - 6 £413 -
Kotlin
London

For the 6 months to 13 November 2019, 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 69 (81.18%) Java
2 43 (50.59%) Android
3 37 (43.53%) Agile Software Development
4 35 (41.18%) Android Development
5 26 (30.59%) TDD
6 22 (25.88%) Microservices
7 16 (18.82%) JavaScript
7 16 (18.82%) Scala
8 15 (17.65%) Spring
8 15 (17.65%) Software Engineering
8 15 (17.65%) User Experience
8 15 (17.65%) Mobile App
9 13 (15.29%) Degree
9 13 (15.29%) Computer Science
10 12 (14.12%) Pair Programming
10 12 (14.12%) RxJava
10 12 (14.12%) Kubernetes
11 11 (12.94%) Apple iOS
12 10 (11.76%) Finance
12 10 (11.76%) Mathematics
12 10 (11.76%) Git (software)
12 10 (11.76%) RESTful
12 10 (11.76%) Clojure
12 10 (11.76%) Node.js
13 9 (10.59%) Google
13 9 (10.59%) Banking
13 9 (10.59%) GitHub
13 9 (10.59%) DevOps
14 8 (9.41%) Apple Swift
14 8 (9.41%) Grafana

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 4 (4.71%) Elasticsearch
2 2 (2.35%) Apache Spark
2 2 (2.35%) Confluence
2 2 (2.35%) WebLogic
2 2 (2.35%) WebSphere
3 1 (1.18%) nginx
Cloud Services
1 9 (10.59%) GitHub
2 5 (5.88%) AWS
3 4 (4.71%) Amazon Kinesis
3 4 (4.71%) AWS Lambda
3 4 (4.71%) Fastly
3 4 (4.71%) Heroku
3 4 (4.71%) Serverless
4 2 (2.35%) Google Play
4 2 (2.35%) OpenShift
5 1 (1.18%) Apigee
5 1 (1.18%) Datadog
5 1 (1.18%) Firebase
5 1 (1.18%) GCP
Communications & Networking
1 4 (4.71%) HTTP
2 1 (1.18%) Bluetooth
2 1 (1.18%) HTTPS
Database & Business Intelligence
1 5 (5.88%) Redis
2 4 (4.71%) Amazon DynamoDB
2 4 (4.71%) Neo4j
2 4 (4.71%) PostgreSQL
3 3 (3.53%) Oracle Database
4 2 (2.35%) Apache Cassandra
4 2 (2.35%) Apache Hive
4 2 (2.35%) Big Data
4 2 (2.35%) FoundationDB
4 2 (2.35%) Hadoop
4 2 (2.35%) InfluxDB
4 2 (2.35%) MongoDB
4 2 (2.35%) MySQL
4 2 (2.35%) NoSQL
5 1 (1.18%) SQLite
Development Applications
1 10 (11.76%) Git (software)
2 8 (9.41%) JUnit
3 7 (8.24%) Jenkins
4 5 (5.88%) Android Studio
4 5 (5.88%) Gradle
4 5 (5.88%) Maven
5 4 (4.71%) CircleCI
5 4 (4.71%) Mockito
5 4 (4.71%) webpack
6 3 (3.53%) Cucumber
6 3 (3.53%) GoCD
6 3 (3.53%) TeamCity
6 3 (3.53%) Xcode
7 2 (2.35%) Ant
7 2 (2.35%) git-flow
7 2 (2.35%) JIRA
7 2 (2.35%) JMeter
8 1 (1.18%) Appium
8 1 (1.18%) GitLab
8 1 (1.18%) Selenium
General
1 10 (11.76%) Finance
2 9 (10.59%) Banking
3 4 (4.71%) Retail
4 2 (2.35%) Retail Banking
5 1 (1.18%) Front Office
5 1 (1.18%) Law
5 1 (1.18%) Marketing
Job Titles
1 60 (70.59%) Developer
2 30 (35.29%) Android Developer
3 15 (17.65%) Java Developer
4 10 (11.76%) Senior Developer
5 6 (7.06%) Software Engineer
6 5 (5.88%) Android Engineer
6 5 (5.88%) Backend Developer
6 5 (5.88%) Scala Developer
6 5 (5.88%) Senior Java Developer
6 5 (5.88%) Senior Software Engineer
7 4 (4.71%) Senior Android Developer
8 3 (3.53%) Applications Engineer
8 3 (3.53%) Java Engineer
8 3 (3.53%) Python Engineer
8 3 (3.53%) Test Automation Engineer
8 3 (3.53%) Test Engineer
9 2 (2.35%) Data Engineer
9 2 (2.35%) iOS Developer
9 2 (2.35%) Python Developer
9 2 (2.35%) Software Developer
Libraries, Frameworks & Software Standards
1 15 (17.65%) Spring
2 12 (14.12%) RxJava
3 10 (11.76%) Node.js
3 10 (11.76%) RESTful
4 7 (8.24%) Dagger
4 7 (8.24%) GraphQL
4 7 (8.24%) JSON
4 7 (8.24%) Spring Boot
5 6 (7.06%) Web Services
6 5 (5.88%) Kafka
6 5 (5.88%) React
6 5 (5.88%) XML
7 4 (4.71%) CSS
7 4 (4.71%) Handlebars
7 4 (4.71%) HTML
7 4 (4.71%) Preactjs
7 4 (4.71%) REST
7 4 (4.71%) Retrofit
7 4 (4.71%) Sass
7 4 (4.71%) VCL
Miscellaneous
1 15 (17.65%) Mobile App
1 15 (17.65%) User Experience
2 4 (4.71%) Greenfield Project
3 3 (3.53%) Equities
4 2 (2.35%) Analytical Skills
4 2 (2.35%) Enterprise Software
4 2 (2.35%) Mobile Payment
5 1 (1.18%) Chromecast
5 1 (1.18%) Data Structures
5 1 (1.18%) Self-Motivation
5 1 (1.18%) Video on Demand
Operating Systems
1 43 (50.59%) Android
2 11 (12.94%) Apple iOS
3 4 (4.71%) Linux
Processes & Methodologies
1 37 (43.53%) Agile Software Development
2 35 (41.18%) Android Development
3 26 (30.59%) TDD
4 22 (25.88%) Microservices
5 15 (17.65%) Software Engineering
6 13 (15.29%) Computer Science
7 12 (14.12%) Pair Programming
8 10 (11.76%) Mathematics
9 9 (10.59%) DevOps
10 8 (9.41%) Scrum
10 8 (9.41%) Test Automation
11 6 (7.06%) E-Commerce
11 6 (7.06%) Fintech
11 6 (7.06%) MVVM
12 5 (5.88%) Coaching
12 5 (5.88%) Continuous Integration
12 5 (5.88%) Mentoring
12 5 (5.88%) Open Source
12 5 (5.88%) Use Case
12 5 (5.88%) Web Development
Programming Languages
1 69 (81.18%) Java
2 16 (18.82%) JavaScript
2 16 (18.82%) Scala
3 10 (11.76%) Clojure
4 8 (9.41%) Apple Swift
4 8 (9.41%) Python
5 5 (5.88%) ClojureScript
5 5 (5.88%) Go
5 5 (5.88%) Groovy
5 5 (5.88%) SQL
6 3 (3.53%) Java 8
6 3 (3.53%) TypeScript
7 2 (2.35%) Bash Shell
7 2 (2.35%) C#
8 1 (1.18%) C
8 1 (1.18%) Haskell
Qualifications
1 13 (15.29%) Degree
2 2 (2.35%) Master's Degree
3 1 (1.18%) Computer Science Degree
System Software
1 7 (8.24%) Docker
Systems Management
1 12 (14.12%) Kubernetes
2 8 (9.41%) Grafana
3 4 (4.71%) Graphite
3 4 (4.71%) Prometheus
4 2 (2.35%) Ansible
4 2 (2.35%) Consul
4 2 (2.35%) Terraform
5 1 (1.18%) Kibana
5 1 (1.18%) Marathon
5 1 (1.18%) Mesos
Vendors
1 9 (10.59%) Google
2 4 (4.71%) Oracle
2 4 (4.71%) Splunk
3 2 (2.35%) Bloomberg
3 2 (2.35%) Cypress Semiconductor
3 2 (2.35%) Perforce
3 2 (2.35%) Reuters
4 1 (1.18%) CA
4 1 (1.18%) CA Agile Central