Period
to 21 February 2019

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 21 February 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
England > London
6 months to
21 Feb 2019
Same period 2018 Same period 2017
Rank 349 507 599
Rank change year-on-year +158 +92 -
Contract jobs citing Kotlin 295 120 7
As % of all contract IT jobs advertised in London 0.67% 0.26% 0.017%
As % of the Programming Languages category 1.36% 0.54% 0.037%
Number of daily rates quoted 248 95 6
London median daily rate £550 £525 £625
Median daily rate % change year-on-year +4.76% -16.00% -
10th Percentile £425 £409 £563
90th Percentile £675 £633 £675
England median daily rate £525 £482 £625
% change year-on-year +8.98% -22.92% -
Number of hourly rates quoted 0 0 0
London median hourly rate - - -
England median hourly rate £63.65 £25.00 -
% change year-on-year +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 21,688 22,382 18,750
As % of all contract IT jobs advertised in London 49.28% 47.67% 45.38%
Number of daily rates quoted 16,448 17,188 14,022
London median daily rate £525 £500 £475
Median daily rate % change year-on-year +5.00% +5.26% +5.56%
10th Percentile £363 £350 £324
90th Percentile £675 £675 £638
England median daily rate £484 £475 £425
% change year-on-year +1.89% +11.76% +1.19%
Number of hourly rates quoted 113 175 124
London median hourly rate £36.67 £33.77 £42.00
Median hourly rate % change year-on-year +8.59% -19.60% +41.70%
10th Percentile £18.75 £17.83 £16.74
90th Percentile £53.75 £56.00 £65.00
England median hourly rate £42.50 £40.00 £40.00
% change year-on-year +6.25% - +6.67%

Kotlin
Job Vacancy Trend in London

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

Job vacancy trend for Kotlin in London

Kotlin
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for Kotlin in London

Kotlin
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing Kotlin in London over the 6 months to 21 February 2019.

Contractor daily 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 21 February 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
Central London +59 89 £580 +10.48% 48
West London +18 11 £550 +1.85% 18
East London - 3 £538 - 5
Kotlin
England

For the 6 months to 21 February 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 London region with a requirement for Kotlin.

1 205 (69.49%) Java
2 152 (51.53%) Android
3 128 (43.39%) Agile Software Development
3 128 (43.39%) Android Development
4 122 (41.36%) TDD
5 81 (27.46%) RxJava
6 71 (24.07%) Spring
7 70 (23.73%) Finance
8 56 (18.98%) Microservices
9 52 (17.63%) Scala
10 50 (16.95%) Git (software)
10 50 (16.95%) Software Engineering
11 46 (15.59%) Banking
12 44 (14.92%) Mobile App
13 41 (13.90%) RESTful
14 40 (13.56%) BDD
15 37 (12.54%) Spring Boot
16 35 (11.86%) Dagger
17 33 (11.19%) Docker
17 33 (11.19%) Derivative
17 33 (11.19%) Continuous Integration
18 32 (10.85%) Multithreading
18 32 (10.85%) Amazon AWS
19 31 (10.51%) Apple iOS
19 31 (10.51%) Python
19 31 (10.51%) Java 8
20 29 (9.83%) Greenfield Project
20 29 (9.83%) REST
20 29 (9.83%) Test Automation
21 28 (9.49%) Pair Programming

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 17 (5.76%) Cloud Foundry
2 6 (2.03%) Elasticsearch
3 5 (1.69%) Apache Spark
4 2 (0.68%) Apache
4 2 (0.68%) ArcGIS
4 2 (0.68%) CMS
4 2 (0.68%) Confluence
5 1 (0.34%) Ethereum
5 1 (0.34%) Tomcat
5 1 (0.34%) WebSphere
Applications
1 1 (0.34%) Adobe Illustrator
1 1 (0.34%) InVision
1 1 (0.34%) Photoshop
1 1 (0.34%) Snapchat
Business Applications
1 1 (0.34%) ION MarketView
1 1 (0.34%) R3 Corda
Cloud Services
1 32 (10.85%) Amazon AWS
2 15 (5.08%) Microsoft Azure
3 12 (4.07%) GitHub
3 12 (4.07%) Google Cloud Platform
4 7 (2.37%) PaaS
5 5 (1.69%) Google Play
6 3 (1.02%) AWS Lambda
6 3 (1.02%) npm
6 3 (1.02%) Serverless
7 2 (0.68%) IBM Cloud
8 1 (0.34%) Heroku
Communications & Networking
1 6 (2.03%) HTTP
1 6 (2.03%) SSL
2 2 (0.68%) HTTPS
3 1 (0.34%) Wireshark
Database & Business Intelligence
1 16 (5.42%) PostgreSQL
2 9 (3.05%) MongoDB
2 9 (3.05%) NoSQL
3 7 (2.37%) Relational Database
4 5 (1.69%) SQLite
5 4 (1.36%) Big Data
5 4 (1.36%) Blockchain
5 4 (1.36%) Hadoop
6 3 (1.02%) Amazon Aurora
6 3 (1.02%) Amazon RDS
7 2 (0.68%) Apache Cassandra
8 1 (0.34%) Amazon DynamoDB
8 1 (0.34%) Apache Hive
8 1 (0.34%) CouchDB
8 1 (0.34%) InfluxDB
8 1 (0.34%) Oracle Database
8 1 (0.34%) Redis
Development Applications
1 50 (16.95%) Git (software)
2 26 (8.81%) Jenkins
3 20 (6.78%) Gradle
4 16 (5.42%) Android Studio
4 16 (5.42%) JUnit
5 11 (3.73%) Mockito
6 10 (3.39%) Cucumber
7 9 (3.05%) IntelliJ
8 8 (2.71%) JIRA
9 6 (2.03%) Maven
9 6 (2.03%) Subversion
10 5 (1.69%) Appium
10 5 (1.69%) Bitbucket
10 5 (1.69%) Genymotion
10 5 (1.69%) JMeter
10 5 (1.69%) SonarQube
11 4 (1.36%) Xcode
12 3 (1.02%) Burp Suite
12 3 (1.02%) TeamCity
12 3 (1.02%) webpack
General
1 70 (23.73%) Finance
2 46 (15.59%) Banking
3 17 (5.76%) Publishing
4 12 (4.07%) Front Office
5 7 (2.37%) Back Office
6 6 (2.03%) Retail
7 5 (1.69%) Games
8 4 (1.36%) Automotive
9 2 (0.68%) Advertising
9 2 (0.68%) Investment Banking
10 1 (0.34%) Financial Institution
10 1 (0.34%) Law
10 1 (0.34%) Multimedia
Job Titles
1 237 (80.34%) Developer
2 116 (39.32%) Android Developer
3 90 (30.51%) Java Developer
4 66 (22.37%) Senior Developer
5 38 (12.88%) Senior Java Developer
6 25 (8.47%) Senior Android Developer
7 19 (6.44%) Android Engineer
7 19 (6.44%) Credit Risk Developer
7 19 (6.44%) Credit Risk Java Developer
7 19 (6.44%) Senior Credit Risk Java Developer
8 13 (4.41%) iOS Developer
8 13 (4.41%) Software Engineer
9 11 (3.73%) Java Engineer
9 11 (3.73%) Java Scala Developer
9 11 (3.73%) Scala Developer
10 9 (3.05%) Architect
10 9 (3.05%) Backend Developer
10 9 (3.05%) iOS Android Developer
11 8 (2.71%) Applications Developer
11 8 (2.71%) Software Developer
Libraries, Frameworks & Software Standards
1 81 (27.46%) RxJava
2 71 (24.07%) Spring
3 41 (13.90%) RESTful
4 37 (12.54%) Spring Boot
5 35 (11.86%) Dagger
6 29 (9.83%) REST
7 27 (9.15%) Retrofit
8 26 (8.81%) Android SDK
8 26 (8.81%) JSON
9 23 (7.80%) Web Services
10 21 (7.12%) Hibernate
11 18 (6.10%) XML
12 15 (5.08%) Velocity
13 13 (4.41%) HTML
14 12 (4.07%) CSS
15 9 (3.05%) iOS SDK
16 8 (2.71%) Kafka
17 7 (2.37%) AngularJS
17 7 (2.37%) GraphQL
17 7 (2.37%) LESS
Miscellaneous
1 44 (14.92%) Mobile App
2 33 (11.19%) Derivative
3 29 (9.83%) Greenfield Project
4 19 (6.44%) Credit Risk
5 15 (5.08%) User Experience
6 8 (2.71%) Algorithms
7 7 (2.37%) Cloud Native
7 7 (2.37%) Data Structures
7 7 (2.37%) Hedge funds
7 7 (2.37%) Video on Demand
8 6 (2.03%) Equity Derivative
8 6 (2.03%) Mobile Banking
8 6 (2.03%) Self-Motivation
9 5 (1.69%) Grid Computing
9 5 (1.69%) Market Risk
10 4 (1.36%) Fintech
11 3 (1.02%) Online Banking
11 3 (1.02%) Over-the-Top Content
11 3 (1.02%) Video\Live Streaming
12 2 (0.68%) Analytical Skills
Operating Systems
1 152 (51.53%) Android
2 31 (10.51%) Apple iOS
3 11 (3.73%) Linux
4 6 (2.03%) Unix
5 2 (0.68%) Android TV
6 1 (0.34%) Mac OS
Processes & Methodologies
1 128 (43.39%) Agile Software Development
1 128 (43.39%) Android Development
2 122 (41.36%) TDD
3 56 (18.98%) Microservices
4 50 (16.95%) Software Engineering
5 40 (13.56%) BDD
6 33 (11.19%) Continuous Integration
7 32 (10.85%) Multithreading
8 29 (9.83%) Test Automation
9 28 (9.49%) Pair Programming
10 26 (8.81%) Computer Science
10 26 (8.81%) OO
11 24 (8.14%) Continuous Delivery
11 24 (8.14%) DevOps
11 24 (8.14%) MVVM
12 23 (7.80%) Open Source
13 21 (7.12%) Scrum
14 18 (6.10%) Functional Programming
15 15 (5.08%) Mathematics
15 15 (5.08%) Mobile Development
Programming Languages
1 205 (69.49%) Java
2 52 (17.63%) Scala
3 31 (10.51%) Java 8
3 31 (10.51%) Python
4 25 (8.47%) JavaScript
5 24 (8.14%) Clojure
5 24 (8.14%) SQL
6 22 (7.46%) Apple Swift
7 15 (5.08%) Go
7 15 (5.08%) Haskell
7 15 (5.08%) Objective-C
8 12 (4.07%) Bash Shell
9 11 (3.73%) C#
10 9 (3.05%) C
11 8 (2.71%) Groovy
11 8 (2.71%) TypeScript
12 7 (2.37%) ES6
13 6 (2.03%) Shell Script
14 3 (1.02%) C++
14 3 (1.02%) Java 9
Qualifications
1 26 (8.81%) Degree
2 7 (2.37%) Computer Science Degree
3 5 (1.69%) Sun Certification
4 2 (0.68%) CEH
4 2 (0.68%) CISSP
5 1 (0.34%) CREST Certified
5 1 (0.34%) OSCP
Quality Assurance & Compliance
1 8 (2.71%) QA
2 2 (0.68%) PCI DSS
System Software
1 33 (11.19%) Docker
2 1 (0.34%) Virtual Machines
Systems Management
1 25 (8.47%) Kubernetes
2 8 (2.71%) Prometheus
3 7 (2.37%) Grafana
4 6 (2.03%) Kibana
4 6 (2.03%) logstash
5 1 (0.34%) Ansible
5 1 (0.34%) Mesos
5 1 (0.34%) Opscode Chef
5 1 (0.34%) Puppet
Vendors
1 23 (7.80%) Oracle
2 21 (7.12%) Google
2 21 (7.12%) Splunk
3 15 (5.08%) AppDynamics
4 9 (3.05%) Atlassian
5 8 (2.71%) Bloomberg
5 8 (2.71%) Reuters
6 7 (2.37%) MuleSoft
7 4 (1.36%) Perforce
8 3 (1.02%) IBM
9 2 (0.68%) Dynatrace
9 2 (0.68%) Microsoft
9 2 (0.68%) New Relic
9 2 (0.68%) Salesforce.com
10 1 (0.34%) ION Trading
10 1 (0.34%) Mapbox
10 1 (0.34%) VocaLink