Period
to 28 May 2020

The following table provides summary statistics for contract job vacancies advertised in 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 28 May 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
England > London
6 months to
28 May 2020
Same period 2019 Same period 2018
Rank 170 344 420
Rank change year-on-year +174 +76 +141
Contract jobs citing Kotlin 286 270 222
As % of all contract jobs advertised in London 1.48% 0.67% 0.49%
As % of the Programming Languages category 3.02% 1.41% 1.00%
Number of daily rates quoted 204 212 187
Median daily rate £550 £550 £540
Median daily rate % change year-on-year - +1.85% -13.60%
10th Percentile £413 £414 £419
90th Percentile £713 £725 £675
England median daily rate £525 £525 £513
% change year-on-year - +2.44% -18.00%
Number of hourly rates quoted 9 1 0
Median hourly rate £61.50 £55.40 -
Median hourly rate % change year-on-year +11.01% - -
England median hourly rate £61.50 £63.65 £25.00
% change year-on-year -3.38% +154.60% -

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 London with a requirement for coding skills.

All Programming Languages
London
Contract vacancies with a requirement for coding skills 9,455 19,161 22,175
As % of all contract IT jobs advertised in London 48.83% 47.75% 48.67%
Number of daily rates quoted 6,808 14,402 16,888
Median daily rate £525 £525 £500
Median daily rate % change year-on-year - +5.00% +4.17%
10th Percentile £366 £363 £356
90th Percentile £700 £680 £675
England median daily rate £500 £484 £475
% change year-on-year +3.31% +1.89% +6.26%
Number of hourly rates quoted 105 131 206
Median hourly rate £35.00 £36.00 £42.02
Median hourly rate % change year-on-year -2.78% -14.32% -1.14%
10th Percentile £22.90 £20.00 £17.85
90th Percentile £63.75 £56.50 £57.94
Median hourly rate £35.00 £43.00 £41.00
% change year-on-year -18.60% +4.88% -1.20%

Kotlin
Job Vacancy Trend in London

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

Job vacancy trend for Kotlin in London

Kotlin
Contractor Daily Rate Trend in London

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

Daily rate trend for Kotlin in London

Kotlin
Daily Rate Histogram in London

Daily rate distribution for jobs citing Kotlin in London over the 6 months to 28 May 2020.

Daily rate histogram for Kotlin in London

Kotlin
Contractor Hourly Rate Trend in London

3-month moving average hourly rates quoted in jobs citing Kotlin in London.

Hourly rate trend for Kotlin in London

Kotlin
Hourly Rate Histogram in London

Hourly rate distribution of jobs citing Kotlin in London over the 6 months to 28 May 2020.

Hourly rate histogram for Kotlin in London

Kotlin
Contract Job Locations in 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 London region over the 6 months to 28 May 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
Central London +87 57 £550 -8.33% 27
West London +43 8 £550 +10.00% 5
East London +44 1 £468 -
Kotlin
England

For the 6 months to 28 May 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 London region with a requirement for Kotlin.

1 199 (69.58%) Java
2 150 (52.45%) Agile Software Development
3 138 (48.25%) Android
4 113 (39.51%) Android Development
5 80 (27.97%) Software Engineering
6 66 (23.08%) Scala
7 65 (22.73%) RESTful
7 65 (22.73%) JavaScript
8 63 (22.03%) RxJava
9 62 (21.68%) Banking
9 62 (21.68%) AWS
10 61 (21.33%) Spring
11 59 (20.63%) Finance
11 59 (20.63%) Microservices
12 58 (20.28%) TDD
13 57 (19.93%) JUnit
14 56 (19.58%) Git (software)
15 53 (18.53%) Azure
16 48 (16.78%) GitHub
17 47 (16.43%) Continuous Integration
18 46 (16.08%) Docker
19 45 (15.73%) GCP
19 45 (15.73%) Mobile App
20 43 (15.03%) React
21 41 (14.34%) Fintech
22 40 (13.99%) Jenkins
22 40 (13.99%) NoSQL
23 39 (13.64%) SDLC
24 38 (13.29%) Mockito
24 38 (13.29%) SQL

Kotlin
Co-occurring IT Skills in 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 24 (8.39%) Apache Spark
2 11 (3.85%) WebLogic
2 11 (3.85%) WebSphere
3 6 (2.10%) Cloud Foundry
4 5 (1.75%) Confluence
5 2 (0.70%) Elasticsearch
6 1 (0.35%) Anypoint
Applications
1 3 (1.05%) InVision
1 3 (1.05%) Sketch
2 1 (0.35%) Zeplin
Business Applications
1 7 (2.45%) FINCAD Analytics
2 2 (0.70%) R3 Corda
3 1 (0.35%) Payment Gateway
Cloud Services
1 62 (21.68%) AWS
2 53 (18.53%) Azure
3 48 (16.78%) GitHub
4 45 (15.73%) GCP
5 18 (6.29%) Amazon SQS
6 15 (5.24%) Amazon ECS
7 7 (2.45%) AWS Step Functions
8 5 (1.75%) Serverless
9 4 (1.40%) AWS Lambda
9 4 (1.40%) Firebase
10 3 (1.05%) Amazon EC2
11 2 (0.70%) Amazon ELB
11 2 (0.70%) Amazon S3
11 2 (0.70%) Google Play
11 2 (0.70%) Heroku
11 2 (0.70%) SaaS
12 1 (0.35%) AWS CloudFormation
12 1 (0.35%) BrowserStack
12 1 (0.35%) Sauce Labs
12 1 (0.35%) Slack
Communications & Networking
1 27 (9.44%) HTTPS
2 21 (7.34%) SSL
3 13 (4.55%) HTTP
4 1 (0.35%) Internet
Database & Business Intelligence
1 40 (13.99%) NoSQL
2 15 (5.24%) Amazon Redshift
3 14 (4.90%) MongoDB
4 12 (4.20%) PostgreSQL
5 8 (2.80%) Apache Cassandra
5 8 (2.80%) Redis
5 8 (2.80%) Relational Database
5 8 (2.80%) SQLite
6 7 (2.45%) Amazon Athena
6 7 (2.45%) Amazon DynamoDB
6 7 (2.45%) Couchbase
6 7 (2.45%) DB2
6 7 (2.45%) HBase
6 7 (2.45%) MariaDB
6 7 (2.45%) Neo4j
6 7 (2.45%) RDBMS
7 5 (1.75%) Amazon Aurora
8 3 (1.05%) Amazon RDS
8 3 (1.05%) Blockchain
9 2 (0.70%) Big Data
Development Applications
1 57 (19.93%) JUnit
2 56 (19.58%) Git (software)
3 40 (13.99%) Jenkins
4 38 (13.29%) Mockito
5 33 (11.54%) Gradle
6 27 (9.44%) Android Studio
7 21 (7.34%) git-flow
8 16 (5.59%) Ant
9 12 (4.20%) JIRA
9 12 (4.20%) Maven
10 11 (3.85%) JMeter
11 7 (2.45%) CircleCI
12 6 (2.10%) Xcode
13 5 (1.75%) Cucumber
13 5 (1.75%) fastlane
13 5 (1.75%) Selenium
14 3 (1.05%) CocoaPods
14 3 (1.05%) Cypress.io
14 3 (1.05%) TeamCity
14 3 (1.05%) Travis CI
General
1 62 (21.68%) Banking
2 59 (20.63%) Finance
3 28 (9.79%) Front Office
4 17 (5.94%) Investment Banking
5 9 (3.15%) Games
6 6 (2.10%) Automotive
7 5 (1.75%) Financial Institution
7 5 (1.75%) Retail
8 2 (0.70%) Advertising
8 2 (0.70%) Marketing
8 2 (0.70%) Telecoms
9 1 (0.35%) Aerospace
9 1 (0.35%) Electronics
9 1 (0.35%) Pharmaceutical
9 1 (0.35%) Retail Banking
Job Titles
1 227 (79.37%) Developer
2 100 (34.97%) Android Developer
3 56 (19.58%) Java Developer
3 56 (19.58%) Senior Developer
4 26 (9.09%) Senior Android Developer
5 21 (7.34%) Scala Developer
6 20 (6.99%) Full Stack Developer
6 20 (6.99%) React Developer
7 17 (5.94%) Senior Scala Developer
8 15 (5.24%) Android Engineer
8 15 (5.24%) Front Office Developer
9 14 (4.90%) Java Engineer
10 12 (4.20%) AWS Developer
10 12 (4.20%) Software Engineer
11 11 (3.85%) Mobile Developer
12 10 (3.50%) JavaScript Developer
13 8 (2.80%) Senior Java Developer
14 7 (2.45%) J2EE Developer
14 7 (2.45%) Java/J2EE Developer
14 7 (2.45%) Lead Developer
Libraries, Frameworks & Software Standards
1 65 (22.73%) RESTful
2 63 (22.03%) RxJava
3 61 (21.33%) Spring
4 43 (15.03%) React
5 38 (13.29%) Web Services
6 35 (12.24%) Retrofit
7 34 (11.89%) Kafka
8 32 (11.19%) CSS
8 32 (11.19%) HTML
9 29 (10.14%) J2EE
10 26 (9.09%) Dagger
10 26 (9.09%) Material Design
11 25 (8.74%) AngularJS
11 25 (8.74%) Node.js
12 24 (8.39%) Android SDK
13 23 (8.04%) HTML5
14 22 (7.69%) Redux
15 21 (7.34%) Guice
15 21 (7.34%) JAAS
15 21 (7.34%) Spring Security
Miscellaneous
1 45 (15.73%) Mobile App
2 34 (11.89%) User Experience
3 25 (8.74%) Foreign Exchange (FX)
3 25 (8.74%) Greenfield Project
4 22 (7.69%) Derivative
4 22 (7.69%) Fixed Income
4 22 (7.69%) Hedge funds
5 18 (6.29%) Equities
6 15 (5.24%) Blog
6 15 (5.24%) Mobile Payment
7 11 (3.85%) Data Structures
7 11 (3.85%) Enterprise Software
7 11 (3.85%) Virtual Team
8 7 (2.45%) Equity Derivative
9 5 (1.75%) Analytical Skills
9 5 (1.75%) Market Risk
9 5 (1.75%) Mobile Banking
9 5 (1.75%) Self-Motivation
10 3 (1.05%) Algorithms
10 3 (1.05%) Grid Computing
Operating Systems
1 138 (48.25%) Android
2 33 (11.54%) Apple iOS
3 7 (2.45%) Linux
4 2 (0.70%) Unix
Processes & Methodologies
1 150 (52.45%) Agile Software Development
2 113 (39.51%) Android Development
3 80 (27.97%) Software Engineering
4 59 (20.63%) Microservices
5 58 (20.28%) TDD
6 47 (16.43%) Continuous Integration
7 41 (14.34%) Fintech
8 39 (13.64%) SDLC
9 37 (12.94%) DevOps
10 36 (12.59%) MVVM
11 35 (12.24%) Open Source
12 32 (11.19%) Computer Science
13 31 (10.84%) Test Automation
14 29 (10.14%) OO
15 28 (9.79%) Pair Programming
15 28 (9.79%) Scrum
16 26 (9.09%) Dependency Injection
17 25 (8.74%) Architectural Design
18 24 (8.39%) Continuous Delivery
19 23 (8.04%) Mobile Development
Programming Languages
1 199 (69.58%) Java
2 66 (23.08%) Scala
3 65 (22.73%) JavaScript
4 38 (13.29%) SQL
5 28 (9.79%) Java 8
6 22 (7.69%) Python
7 16 (5.59%) Apple Swift
8 13 (4.55%) TypeScript
9 9 (3.15%) C#
10 7 (2.45%) C
10 7 (2.45%) Objective-C
11 5 (1.75%) Bash Shell
11 5 (1.75%) Ruby
12 4 (1.40%) Clojure
13 3 (1.05%) Haskell
14 2 (0.70%) C++
14 2 (0.70%) Go
14 2 (0.70%) Shell Script
15 1 (0.35%) ClojureScript
15 1 (0.35%) ES6
Qualifications
1 15 (5.24%) Degree
2 12 (4.20%) Computer Science Degree
3 1 (0.35%) Master's Degree
3 1 (0.35%) SANS
Quality Assurance & Compliance
1 6 (2.10%) QA
2 1 (0.35%) WCAG
System Software
1 46 (16.08%) Docker
Systems Management
1 30 (10.49%) Kubernetes
2 23 (8.04%) Prometheus
3 20 (6.99%) Zipkin
4 19 (6.64%) Terraform
5 5 (1.75%) Ansible
6 2 (0.70%) Grafana
7 1 (0.35%) Opscode Chef
7 1 (0.35%) Puppet
Vendors
1 14 (4.90%) Google
2 10 (3.50%) Oracle
3 7 (2.45%) CA
3 7 (2.45%) CA Agile Central
3 7 (2.45%) Sybase
4 3 (1.05%) Apple
4 3 (1.05%) Facebook
4 3 (1.05%) Perforce
4 3 (1.05%) Salesforce.com
5 1 (0.35%) Adobe
5 1 (0.35%) AppDynamics
5 1 (0.35%) IBM
5 1 (0.35%) Microsoft
5 1 (0.35%) MuleSoft
5 1 (0.35%) Splunk
5 1 (0.35%) TOWER Software