Period
to 9 December 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 9 December 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
9 Dec 2019
Same period 2018 Same period 2017
Rank 252 370 574
Rank change year-on-year +118 +204 +55
Contract jobs citing Kotlin 338 285 70
As % of all contract IT jobs advertised in London 0.98% 0.61% 0.15%
As % of the Programming Languages category 2.09% 1.22% 0.31%
Number of daily rates quoted 241 239 53
London median daily rate £530 £525 £540
Median daily rate % change year-on-year +0.95% -2.78% -6.09%
10th Percentile £400 £425 £400
90th Percentile £713 £675 £668
England median daily rate £500 £525 £450
% change year-on-year -4.76% +16.67% -21.74%
Number of hourly rates quoted 3 0 0
London median hourly rate £48.85 - -
England 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 London with a requirement for coding skills.

All Programming Languages
London
Contract vacancies with a requirement for coding skills 16,155 23,419 22,867
As % of all contract IT jobs advertised in London 46.99% 50.22% 48.52%
Number of daily rates quoted 12,064 17,894 17,424
London median daily rate £525 £525 £500
Median daily rate % change year-on-year - +5.00% +5.26%
10th Percentile £365 £363 £350
90th Percentile £688 £675 £675
England median daily rate £488 £475 £463
% change year-on-year +2.63% +2.70% +8.82%
Number of hourly rates quoted 121 115 145
London median hourly rate £42.11 £36.00 £32.50
Median hourly rate % change year-on-year +16.97% +10.77% -4.03%
10th Percentile £17.25 £18.53 £18.01
90th Percentile £60.54 £58.75 £51.00
England median hourly rate £43.50 £42.19 £40.00
% change year-on-year +3.11% +5.48% +3.90%

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 9 December 2019.

Contractor daily rate histogram for Kotlin in London

Kotlin
Contractor Hourly Rate Histogram in London

The hourly rate distribution of IT jobs citing Kotlin in London over the 6 months to 9 December 2019.

Contractor 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 9 December 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 +33 77 £550 - 75
West London +23 11 £509 -5.35% 14
East London +32 1 £468 -13.27% 12
South London - 1 - -
Kotlin
England

For the 6 months to 9 December 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.

1 236 (69.82%) Java
2 179 (52.96%) Android
3 159 (47.04%) Android Development
4 146 (43.20%) Agile Software Development
5 104 (30.77%) TDD
6 81 (23.96%) Microservices
7 69 (20.41%) Banking
8 60 (17.75%) Software Engineering
9 58 (17.16%) Google
9 58 (17.16%) RxJava
10 51 (15.09%) Jenkins
10 51 (15.09%) JavaScript
11 50 (14.79%) SQL
11 50 (14.79%) Spring
11 50 (14.79%) Android SDK
12 48 (14.20%) Web Services
12 48 (14.20%) AWS
13 47 (13.91%) Finance
13 47 (13.91%) Mobile App
14 45 (13.31%) Apple iOS
15 43 (12.72%) Scala
15 43 (12.72%) DevOps
16 42 (12.43%) MongoDB
17 39 (11.54%) Front Office
17 39 (11.54%) Python
17 39 (11.54%) Mobile Development
18 38 (11.24%) Oracle
19 37 (10.95%) GCP
20 36 (10.65%) Java 8
20 36 (10.65%) Git (software)

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 12 (3.55%) Confluence
2 10 (2.96%) Apache Spark
3 8 (2.37%) Cloud Foundry
4 6 (1.78%) WebLogic
5 5 (1.48%) WebSphere
6 3 (0.89%) Elasticsearch
7 2 (0.59%) Skype for Business
8 1 (0.30%) Apache
8 1 (0.30%) Apache Solr
8 1 (0.30%) Hyperledger
8 1 (0.30%) Jetty
8 1 (0.30%) OpenStack
8 1 (0.30%) Oracle Application Server
8 1 (0.30%) Tomcat
Applications
1 6 (1.78%) Sketch
1 6 (1.78%) Zeplin
2 1 (0.30%) MS Visio
Business Applications
1 20 (5.92%) FINCAD Analytics
2 6 (1.78%) R3 Corda
3 1 (0.30%) Distributed Ledger
Cloud Services
1 48 (14.20%) AWS
2 37 (10.95%) GCP
3 28 (8.28%) Azure
4 21 (6.21%) GitHub
5 20 (5.92%) AWS Step Functions
6 11 (3.25%) Serverless
7 10 (2.96%) AWS Lambda
8 8 (2.37%) Amazon Kinesis
8 8 (2.37%) Firebase
9 4 (1.18%) Google Play
10 2 (0.59%) Amazon EC2
10 2 (0.59%) Fastly
10 2 (0.59%) Heroku
10 2 (0.59%) OpenShift
10 2 (0.59%) SaaS
11 1 (0.30%) Azure Functions
11 1 (0.30%) Datadog
11 1 (0.30%) Trello
Communications & Networking
1 8 (2.37%) HTTP
2 4 (1.18%) Bluetooth
2 4 (1.18%) HTTPS
3 3 (0.89%) Internet
Database & Business Intelligence
1 42 (12.43%) MongoDB
2 30 (8.88%) Apache Cassandra
2 30 (8.88%) NoSQL
3 28 (8.28%) Neo4j
4 26 (7.69%) Amazon DynamoDB
5 23 (6.80%) Redis
6 22 (6.51%) HBase
6 22 (6.51%) PostgreSQL
7 20 (5.92%) Amazon Athena
7 20 (5.92%) Couchbase
7 20 (5.92%) DB2
7 20 (5.92%) MariaDB
7 20 (5.92%) RDBMS
7 20 (5.92%) Relational Database
8 16 (4.73%) Amazon Aurora
9 10 (2.96%) Apache Hive
9 10 (2.96%) Hadoop
10 8 (2.37%) InfluxDB
11 6 (1.78%) Blockchain
11 6 (1.78%) Flink
Development Applications
1 51 (15.09%) Jenkins
2 36 (10.65%) Git (software)
3 35 (10.36%) Gradle
4 29 (8.58%) JUnit
5 24 (7.10%) JIRA
6 23 (6.80%) Android Studio
7 22 (6.51%) Cucumber
8 15 (4.44%) Maven
9 13 (3.85%) Mockito
10 12 (3.55%) TeamCity
11 10 (2.96%) GitLab
12 9 (2.66%) Calabash
13 8 (2.37%) JMeter
13 8 (2.37%) Xcode
14 7 (2.07%) Selenium
15 6 (1.78%) Atlassian Bamboo
15 6 (1.78%) git-flow
16 5 (1.48%) Ant
16 5 (1.48%) GoCD
17 4 (1.18%) Bitbucket
General
1 69 (20.41%) Banking
2 47 (13.91%) Finance
3 39 (11.54%) Front Office
4 11 (3.25%) Retail
5 10 (2.96%) Marketing
6 6 (1.78%) Advertising
7 5 (1.48%) Automotive
7 5 (1.48%) Electronics
7 5 (1.48%) Publishing
7 5 (1.48%) Telecoms
8 3 (0.89%) Manufacturing
8 3 (0.89%) Public Sector
8 3 (0.89%) Retail Banking
9 2 (0.59%) Games
9 2 (0.59%) Investment Banking
9 2 (0.59%) Law
10 1 (0.30%) Corporate Banking
Job Titles
1 255 (75.44%) Developer
2 141 (41.72%) Android Developer
3 64 (18.93%) Java Developer
4 61 (18.05%) Senior Developer
5 27 (7.99%) Senior Android Developer
6 21 (6.21%) Android Engineer
6 21 (6.21%) Java Engineer
6 21 (6.21%) Lead Developer
6 21 (6.21%) Senior Java Developer
7 19 (5.62%) Agile Developer
7 19 (5.62%) Lead Android Developer
7 19 (5.62%) Software Engineer
8 12 (3.55%) Agile Java Developer
8 12 (3.55%) AWS Developer
8 12 (3.55%) AWS Engineer
8 12 (3.55%) Data Engineer
9 11 (3.25%) iOS Developer
9 11 (3.25%) Senior Software Engineer
10 10 (2.96%) Java Software Engineer
10 10 (2.96%) NoSQL Developer
Libraries, Frameworks & Software Standards
1 58 (17.16%) RxJava
2 50 (14.79%) Android SDK
2 50 (14.79%) Spring
3 48 (14.20%) Web Services
4 35 (10.36%) Dagger
5 31 (9.17%) RESTful
6 27 (7.99%) REST
7 21 (6.21%) J2EE
8 20 (5.92%) Node.js
9 19 (5.62%) Kafka
9 19 (5.62%) Retrofit
9 19 (5.62%) Spring Boot
10 17 (5.03%) HTML
11 16 (4.73%) React
12 15 (4.44%) CSS
12 15 (4.44%) JSON
13 14 (4.14%) iOS SDK
13 14 (4.14%) SOAP
14 12 (3.55%) XML
15 10 (2.96%) Material Design
Miscellaneous
1 47 (13.91%) Mobile App
2 33 (9.76%) User Experience
3 32 (9.47%) Derivative
4 28 (8.28%) Equity Derivative
5 24 (7.10%) Foreign Exchange (FX)
5 24 (7.10%) Greenfield Project
6 23 (6.80%) Fixed Income
7 20 (5.92%) Hedge funds
7 20 (5.92%) Market Risk
8 19 (5.62%) Data Structures
9 10 (2.96%) iPad
10 9 (2.66%) Equities
11 8 (2.37%) Analytical Skills
11 8 (2.37%) Grid Computing
12 6 (1.78%) Mobile Banking
12 6 (1.78%) Self-Motivation
12 6 (1.78%) Smartphone
13 5 (1.48%) Animation
13 5 (1.48%) Enterprise Software
13 5 (1.48%) Mobile Payment
Operating Systems
1 179 (52.96%) Android
2 45 (13.31%) Apple iOS
3 17 (5.03%) Linux
4 8 (2.37%) Unix
4 8 (2.37%) Windows
5 6 (1.78%) Ubuntu
6 3 (0.89%) Mac OS
7 1 (0.30%) Mac OS X
Processes & Methodologies
1 159 (47.04%) Android Development
2 146 (43.20%) Agile Software Development
3 104 (30.77%) TDD
4 81 (23.96%) Microservices
5 60 (17.75%) Software Engineering
6 43 (12.72%) DevOps
7 39 (11.54%) Mobile Development
8 33 (9.76%) BDD
8 33 (9.76%) Continuous Integration
9 31 (9.17%) Fintech
9 31 (9.17%) Test Automation
10 29 (8.58%) Pair Programming
11 28 (8.28%) Scrum
12 26 (7.69%) Analytics
12 26 (7.69%) Migration
13 21 (6.21%) Asset Management
14 20 (5.92%) Risk Analytics
15 19 (5.62%) Computer Science
15 19 (5.62%) E-Commerce
16 17 (5.03%) Multithreading
Programming Languages
1 236 (69.82%) Java
2 51 (15.09%) JavaScript
3 50 (14.79%) SQL
4 43 (12.72%) Scala
5 39 (11.54%) Python
6 36 (10.65%) Java 8
7 32 (9.47%) Apple Swift
8 19 (5.62%) Clojure
9 14 (4.14%) Go
10 12 (3.55%) Ruby
11 11 (3.25%) C#
11 11 (3.25%) ClojureScript
12 9 (2.66%) Haskell
13 8 (2.37%) Objective-C
13 8 (2.37%) TypeScript
14 5 (1.48%) C
14 5 (1.48%) C++
14 5 (1.48%) Groovy
15 4 (1.18%) Bash Shell
16 2 (0.59%) HiveQL
Qualifications
1 15 (4.44%) Degree
2 5 (1.48%) Master's Degree
3 3 (0.89%) Computer Science Degree
Quality Assurance & Compliance
1 1 (0.30%) GDPR
1 1 (0.30%) PCI DSS
System Software
1 32 (9.47%) Docker
2 8 (2.37%) HDFS
3 1 (0.30%) Virtual Machines
3 1 (0.30%) VMware Infrastructure
Systems Management
1 27 (7.99%) Kubernetes
2 15 (4.44%) Grafana
3 9 (2.66%) Ansible
3 9 (2.66%) Prometheus
4 6 (1.78%) Hadoop YARN
5 5 (1.48%) Terraform
6 3 (0.89%) HockeyApp
6 3 (0.89%) Mesos
7 2 (0.59%) Graphite
7 2 (0.59%) Opscode Chef
8 1 (0.30%) Consul
8 1 (0.30%) Kibana
8 1 (0.30%) Marathon
8 1 (0.30%) Puppet
Vendors
1 58 (17.16%) Google
2 38 (11.24%) Oracle
3 20 (5.92%) Sybase
4 7 (2.07%) MuleSoft
5 5 (1.48%) CA
5 5 (1.48%) CA Agile Central
5 5 (1.48%) Perforce
5 5 (1.48%) Splunk
6 3 (0.89%) AppDynamics
6 3 (0.89%) Facebook
6 3 (0.89%) Microsoft
6 3 (0.89%) SAP
7 2 (0.59%) Bloomberg
7 2 (0.59%) New Relic
7 2 (0.59%) Reuters
7 2 (0.59%) Teradata
8 1 (0.30%) Apple
8 1 (0.30%) TOWER Software
8 1 (0.30%) Twitter
8 1 (0.30%) VMware