Period
to 19 July 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 19 July 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
19 Jul 2019
Same period 2018 Same period 2017
Rank 183 217 251
Rank change year-on-year +34 +34 -
Contract jobs citing Kotlin 99 83 9
As % of all contract IT jobs advertised in Central London 1.14% 0.89% 0.12%
As % of the Programming Languages category 2.25% 1.70% 0.24%
Number of daily rates quoted 81 77 9
Central London median daily rate £600 £600 £625
Median daily rate % change year-on-year - -4.00% -
10th Percentile £475 £425 £498
90th Percentile £738 £775 £638
London median daily rate £550 £550 £600
% change year-on-year - -8.33% -
Number of hourly rates quoted 0 0 0
Central London median hourly rate - - -
London median hourly rate £55.40 - -

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 4,395 4,892 3,734
As % of all contract IT jobs advertised in Central London 50.81% 52.74% 49.05%
Number of daily rates quoted 3,564 4,040 2,970
Central London median daily rate £525 £525 £500
Median daily rate % change year-on-year - +5.00% +10.50%
10th Percentile £384 £363 £327
90th Percentile £675 £688 £663
London median daily rate £525 £513 £500
% change year-on-year +2.44% +2.50% +10.99%
Number of hourly rates quoted 24 22 13
Central London median hourly rate £35.00 £21.50 £24.49
Median hourly rate % change year-on-year +62.79% -12.19% +28.87%
10th Percentile £21.00 £12.53 £13.31
90th Percentile £59.48 £38.72 £41.90
London median hourly rate £36.67 £41.41 £38.75
% change year-on-year -11.45% +6.86% +40.91%

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 19 July 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 19 July 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 78 £575 -6.12% 52
City of Westminster - 3 £650 -
West End of London - 2 £650 -
Kotlin
London

For the 6 months to 19 July 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 86 (86.87%) Java
2 40 (40.40%) Android
3 37 (37.37%) Agile Software Development
4 35 (35.35%) Android Development
5 32 (32.32%) Microservices
6 26 (26.26%) TDD
7 25 (25.25%) Software Engineering
8 24 (24.24%) Scala
9 22 (22.22%) Finance
9 22 (22.22%) Kubernetes
10 20 (20.20%) Spring
11 19 (19.19%) Git (software)
12 18 (18.18%) Computer Science
12 18 (18.18%) Docker
13 17 (17.17%) Degree
14 15 (15.15%) E-Commerce
14 15 (15.15%) User Experience
15 14 (14.14%) REST
15 14 (14.14%) Python
15 14 (14.14%) RESTful
16 13 (13.13%) Google
16 13 (13.13%) JavaScript
16 13 (13.13%) DevOps
16 13 (13.13%) Mobile App
17 12 (12.12%) RxJava
17 12 (12.12%) Mathematics
17 12 (12.12%) Amazon AWS
18 11 (11.11%) Scrum
18 11 (11.11%) Banking
19 10 (10.10%) Android Studio

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 6 (6.06%) Confluence
2 5 (5.05%) Apache Spark
3 4 (4.04%) Elasticsearch
4 1 (1.01%) nginx
4 1 (1.01%) WebSphere
4 1 (1.01%) WebSphere Application Server
Applications
1 2 (2.02%) Chatbot
Cloud Services
1 12 (12.12%) Amazon AWS
2 8 (8.08%) GitHub
2 8 (8.08%) Heroku
3 5 (5.05%) Google Cloud Platform
4 4 (4.04%) Amazon Kinesis
4 4 (4.04%) AWS Lambda
4 4 (4.04%) Fastly
4 4 (4.04%) Serverless
5 2 (2.02%) Datadog
5 2 (2.02%) Google Play
6 1 (1.01%) Apigee
6 1 (1.01%) Firebase
6 1 (1.01%) OpenShift
6 1 (1.01%) Slack
Communications & Networking
1 2 (2.02%) HTTP
2 1 (1.01%) Bluetooth
Database & Business Intelligence
1 7 (7.07%) PostgreSQL
1 7 (7.07%) Redis
1 7 (7.07%) SQLite
2 5 (5.05%) Big Data
3 4 (4.04%) Amazon DynamoDB
3 4 (4.04%) Apache Hive
3 4 (4.04%) Blockchain
3 4 (4.04%) Hadoop
3 4 (4.04%) MySQL
3 4 (4.04%) Neo4j
4 3 (3.03%) NoSQL
4 3 (3.03%) Oracle Database
5 1 (1.01%) Apache Cassandra
5 1 (1.01%) FoundationDB
5 1 (1.01%) InfluxDB
5 1 (1.01%) MongoDB
Development Applications
1 19 (19.19%) Git (software)
2 10 (10.10%) Android Studio
3 8 (8.08%) JIRA
4 7 (7.07%) Gradle
4 7 (7.07%) JUnit
4 7 (7.07%) Subversion
5 6 (6.06%) Jenkins
6 4 (4.04%) CircleCI
6 4 (4.04%) Cucumber
6 4 (4.04%) webpack
7 3 (3.03%) GoCD
7 3 (3.03%) Maven
7 3 (3.03%) TeamCity
8 2 (2.02%) Hudson
9 1 (1.01%) Appium
9 1 (1.01%) Genymotion
9 1 (1.01%) GitLab
9 1 (1.01%) IBM UrbanCode
9 1 (1.01%) Mockito
9 1 (1.01%) Selenium
General
1 22 (22.22%) Finance
2 11 (11.11%) Banking
3 8 (8.08%) Retail
4 2 (2.02%) Retail Banking
5 1 (1.01%) Automotive
5 1 (1.01%) Front Office
5 1 (1.01%) Law
5 1 (1.01%) Marketing
5 1 (1.01%) Publishing
Job Titles
1 63 (63.64%) Developer
2 30 (30.30%) Android Developer
3 16 (16.16%) Senior Developer
4 15 (15.15%) Java Developer
5 12 (12.12%) Software Engineer
6 11 (11.11%) Senior Android Developer
7 7 (7.07%) Backend Developer
7 7 (7.07%) Java Engineer
7 7 (7.07%) Senior Software Engineer
8 6 (6.06%) Scala Developer
9 5 (5.05%) Android Engineer
9 5 (5.05%) Architect
10 4 (4.04%) Java Architect
10 4 (4.04%) Python Engineer
11 3 (3.03%) Data Engineer
11 3 (3.03%) DevOps Engineer
11 3 (3.03%) Java Software Engineer
11 3 (3.03%) Python Developer
12 2 (2.02%) Lead Software Engineer
12 2 (2.02%) Software Development Engineer
Libraries, Frameworks & Software Standards
1 20 (20.20%) Spring
2 14 (14.14%) REST
2 14 (14.14%) RESTful
3 12 (12.12%) RxJava
4 10 (10.10%) GraphQL
4 10 (10.10%) Spring Boot
5 9 (9.09%) Dagger
5 9 (9.09%) Node.js
6 8 (8.08%) Kafka
6 8 (8.08%) React
7 7 (7.07%) Handlebars
8 6 (6.06%) Android SDK
8 6 (6.06%) CSS
8 6 (6.06%) HTML
8 6 (6.06%) Velocity
9 5 (5.05%) JSON
10 4 (4.04%) Preactjs
10 4 (4.04%) Sass
10 4 (4.04%) Vert.x
10 4 (4.04%) WebSockets
Miscellaneous
1 15 (15.15%) User Experience
2 13 (13.13%) Mobile App
3 9 (9.09%) Greenfield Project
4 4 (4.04%) iPad
5 3 (3.03%) Self-Motivation
6 2 (2.02%) Data Protection Act
6 2 (2.02%) Video on Demand
7 1 (1.01%) Algorithms
7 1 (1.01%) Analytical Skills
7 1 (1.01%) Animation
7 1 (1.01%) Blog
7 1 (1.01%) Chromecast
7 1 (1.01%) Data Structures
7 1 (1.01%) DataPower
7 1 (1.01%) Video\Live Streaming
Operating Systems
1 40 (40.40%) Android
2 8 (8.08%) Apple iOS
3 6 (6.06%) Linux
4 1 (1.01%) Mac OS
4 1 (1.01%) Windows
Processes & Methodologies
1 37 (37.37%) Agile Software Development
2 35 (35.35%) Android Development
3 32 (32.32%) Microservices
4 26 (26.26%) TDD
5 25 (25.25%) Software Engineering
6 18 (18.18%) Computer Science
7 15 (15.15%) E-Commerce
8 13 (13.13%) DevOps
9 12 (12.12%) Mathematics
10 11 (11.11%) Scrum
11 10 (10.10%) Fintech
12 8 (8.08%) Pair Programming
12 8 (8.08%) Software Delivery
12 8 (8.08%) Test Automation
13 7 (7.07%) Coaching
13 7 (7.07%) Mentoring
13 7 (7.07%) MVVM
13 7 (7.07%) Project Management
14 6 (6.06%) Continuous Integration
14 6 (6.06%) OO
Programming Languages
1 86 (86.87%) Java
2 24 (24.24%) Scala
3 14 (14.14%) Python
4 13 (13.13%) JavaScript
5 9 (9.09%) Go
6 7 (7.07%) Clojure
7 6 (6.06%) SQL
8 5 (5.05%) Apple Swift
8 5 (5.05%) Groovy
8 5 (5.05%) TypeScript
9 4 (4.04%) Java 8
9 4 (4.04%) Java 9
10 3 (3.03%) Bash Shell
11 1 (1.01%) C
11 1 (1.01%) C#
11 1 (1.01%) ClojureScript
11 1 (1.01%) Haskell
Qualifications
1 17 (17.17%) Degree
2 5 (5.05%) Computer Science Degree
Quality Assurance & Compliance
1 5 (5.05%) QA
System Software
1 18 (18.18%) Docker
Systems Management
1 22 (22.22%) Kubernetes
2 8 (8.08%) Grafana
3 4 (4.04%) Graphite
3 4 (4.04%) Prometheus
4 3 (3.03%) Marathon
4 3 (3.03%) Mesos
5 2 (2.02%) Kibana
6 1 (1.01%) Ansible
6 1 (1.01%) Consul
6 1 (1.01%) Terraform
Vendors
1 13 (13.13%) Google
2 8 (8.08%) Splunk
3 6 (6.06%) Oracle
4 3 (3.03%) Perforce
5 1 (1.01%) Atlassian
5 1 (1.01%) Bloomberg
5 1 (1.01%) IBM
5 1 (1.01%) Reuters
5 1 (1.01%) Spotify