Period
to 11 November 2019

The following table provides summary statistics for contract job vacancies 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 11 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
UK
6 months to
11 Nov 2019
Same period 2018 Same period 2017
Rank 387 572 805
Rank change year-on-year +185 +233 +111
Contract jobs citing Kotlin 502 325 98
As % of all contract IT jobs advertised in the UK 0.60% 0.32% 0.096%
As % of the Programming Languages category 1.44% 0.71% 0.23%
Number of daily rates quoted 342 261 80
UK median daily rate £501 £500 £450
Median daily rate % change year-on-year +0.25% +11.11% -21.74%
10th Percentile £398 £400 £363
90th Percentile £700 £663 £638
UK excluding London median daily rate £450 £420 £420
% change year-on-year +7.14% - -
Number of hourly rates quoted 2 0 0
UK median hourly rate £46.93 - -
UK excluding London median hourly rate £45.00 - -

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 with a requirement for coding skills.

All Programming Languages
UK
Contract vacancies with a requirement for coding skills 34,801 45,549 42,931
As % of all contract IT jobs advertised in the UK 41.75% 44.64% 42.06%
Number of daily rates quoted 24,068 32,035 29,954
UK median daily rate £475 £475 £450
Median daily rate % change year-on-year - +5.56% +5.88%
10th Percentile £323 £315 £308
90th Percentile £650 £638 £638
UK excluding London median daily rate £425 £425 £400
% change year-on-year +0.06% +6.19% +6.67%
Number of hourly rates quoted 701 672 798
UK median hourly rate £43.50 £41.50 £40.00
Median hourly rate % change year-on-year +4.82% +3.75% +6.67%
10th Percentile £19.18 £16.25 £16.25
90th Percentile £55.00 £52.50 £52.50
UK excluding London median hourly rate £42.50 £41.85 £40.50
% change year-on-year +1.57% +3.32% +8.00%

Kotlin
Job Vacancy Trend

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

Job vacancy trend for Kotlin in the UK

Kotlin
Contractor Daily Rate Trend

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

Contractor daily rate trend for Kotlin in the UK

Kotlin
Contractor Daily Rate Histogram

The daily rate distribution of IT jobs citing Kotlin over the 6 months to 11 November 2019.

Contractor daily rate histogram for Kotlin in the UK

Kotlin
Contractor Hourly Rate Trend

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing Kotlin.

Contractor hourly rate trend for Kotlin in the UK

Kotlin
Top 12 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Kotlin within the UK over the 6 months to 11 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
England +180 462 £513 +0.99% 247
London +124 345 £550 +4.76% 155
UK excluding London +128 140 £450 +7.14% 105
North of England +50 44 £475 +26.67% 39
South East +67 43 £420 -12.95% 24
Scotland +53 38 £488 +21.88% 10
North West +20 23 £425 +21.43% 14
Yorkshire +32 21 £475 +13.10% 17
South West +10 12 £450 - 11
West Midlands +42 2 £438 +2.94% 3
Midlands +40 2 £438 +2.94% 11
East of England +27 1 £350 - 7

For the 6 months to 11 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 with a requirement for Kotlin.

1 344 (68.53%) Java
2 319 (63.55%) Android
3 283 (56.37%) Android Development
4 238 (47.41%) Agile Software Development
5 145 (28.88%) TDD
6 96 (19.12%) Banking
7 92 (18.33%) Microservices
8 79 (15.74%) RxJava
9 78 (15.54%) Mobile App
9 78 (15.54%) Software Engineering
10 74 (14.74%) Finance
11 73 (14.54%) Apple iOS
12 68 (13.55%) Dagger
13 66 (13.15%) JavaScript
14 62 (12.35%) Spring
14 62 (12.35%) User Experience
15 61 (12.15%) REST
16 60 (11.95%) Android SDK
17 59 (11.75%) Jenkins
18 56 (11.16%) SQL
19 55 (10.96%) DevOps
19 55 (10.96%) Mobile Development
20 54 (10.76%) Google
21 53 (10.56%) Web Services
22 50 (9.96%) Git (software)
22 50 (9.96%) Scala
22 50 (9.96%) AWS
22 50 (9.96%) Apple Swift
23 48 (9.56%) Test Automation
24 47 (9.36%) RESTful

Kotlin
Co-occurring IT Skills 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 (3.39%) Confluence
2 11 (2.19%) Apache Spark
3 8 (1.59%) Cloud Foundry
4 7 (1.39%) Elasticsearch
5 3 (0.60%) nginx
5 3 (0.60%) WebLogic
6 2 (0.40%) Apache
6 2 (0.40%) Jetty
6 2 (0.40%) Skype for Business
6 2 (0.40%) WebSphere
7 1 (0.20%) Apache Solr
7 1 (0.20%) ColdFusion
7 1 (0.20%) Hyperledger
7 1 (0.20%) OpenStack
7 1 (0.20%) Oracle Application Server
7 1 (0.20%) Tomcat
Applications
1 8 (1.59%) Sketch
1 8 (1.59%) Zeplin
2 1 (0.20%) MS Visio
Business Applications
1 15 (2.99%) FINCAD Analytics
2 9 (1.79%) R3 Corda
3 5 (1.00%) Distributed Ledger
Cloud Services
1 50 (9.96%) AWS
2 34 (6.77%) GCP
3 33 (6.57%) Azure
4 27 (5.38%) GitHub
5 11 (2.19%) Firebase
5 11 (2.19%) Serverless
6 10 (1.99%) Amazon Kinesis
7 9 (1.79%) AWS Lambda
8 5 (1.00%) OpenShift
9 4 (0.80%) AWS CloudFormation
9 4 (0.80%) Fastly
9 4 (0.80%) Heroku
10 3 (0.60%) Amazon EC2
10 3 (0.60%) Amazon S3
10 3 (0.60%) Google Play
11 2 (0.40%) Amazon CloudWatch
11 2 (0.40%) Apigee
11 2 (0.40%) Cloud Computing
11 2 (0.40%) Datadog
11 2 (0.40%) SaaS
Communications & Networking
1 15 (2.99%) HTTP
2 7 (1.39%) HTTPS
3 5 (1.00%) DNS
4 4 (0.80%) Bluetooth
4 4 (0.80%) Internet
5 1 (0.20%) FTP
Database & Business Intelligence
1 46 (9.16%) MongoDB
2 33 (6.57%) NoSQL
3 29 (5.78%) Apache Cassandra
4 25 (4.98%) Neo4j
5 23 (4.58%) Amazon DynamoDB
6 21 (4.18%) Relational Database
7 20 (3.98%) Redis
8 19 (3.78%) PostgreSQL
9 17 (3.39%) Couchbase
9 17 (3.39%) HBase
10 15 (2.99%) Amazon Athena
10 15 (2.99%) DB2
10 15 (2.99%) MariaDB
10 15 (2.99%) RDBMS
11 13 (2.59%) Amazon Aurora
12 12 (2.39%) SQLite
13 11 (2.19%) InfluxDB
14 10 (1.99%) Apache Hive
14 10 (1.99%) Hadoop
15 9 (1.79%) SQL Server
Development Applications
1 59 (11.75%) Jenkins
2 50 (9.96%) Git (software)
3 39 (7.77%) JIRA
4 38 (7.57%) Gradle
5 37 (7.37%) Android Studio
6 32 (6.37%) JUnit
7 23 (4.58%) Cucumber
8 15 (2.99%) GitLab
8 15 (2.99%) TeamCity
9 14 (2.79%) Maven
10 13 (2.59%) Mockito
11 12 (2.39%) git-flow
12 11 (2.19%) Xcode
13 10 (1.99%) Selenium
14 9 (1.79%) Calabash
15 7 (1.39%) GoCD
15 7 (1.39%) JMeter
15 7 (1.39%) Subversion
16 6 (1.20%) Atlassian Bamboo
16 6 (1.20%) CircleCI
General
1 96 (19.12%) Banking
2 74 (14.74%) Finance
3 35 (6.97%) Front Office
4 15 (2.99%) Retail
5 9 (1.79%) Marketing
5 9 (1.79%) Publishing
6 8 (1.59%) Automotive
7 7 (1.39%) Retail Banking
7 7 (1.39%) Telecoms
8 5 (1.00%) Electronics
9 4 (0.80%) Advertising
9 4 (0.80%) Local Government
9 4 (0.80%) Public Sector
10 3 (0.60%) Law
10 3 (0.60%) Manufacturing
11 2 (0.40%) Back Office
11 2 (0.40%) Investment Banking
12 1 (0.20%) Corporate Banking
12 1 (0.20%) Games
Job Titles
1 402 (80.08%) Developer
2 261 (51.99%) Android Developer
3 78 (15.54%) Java Developer
4 65 (12.95%) Senior Developer
5 31 (6.18%) Senior Android Developer
6 24 (4.78%) Lead Developer
6 24 (4.78%) Software Engineer
7 23 (4.58%) Agile Developer
8 21 (4.18%) Lead Android Developer
9 20 (3.98%) Android Engineer
10 19 (3.78%) iOS Developer
10 19 (3.78%) Java Engineer
10 19 (3.78%) Senior Java Developer
11 14 (2.79%) Agile Java Developer
11 14 (2.79%) Mobile Developer
12 11 (2.19%) AWS Engineer
12 11 (2.19%) Senior Software Engineer
13 10 (1.99%) AWS Developer
13 10 (1.99%) Data Engineer
13 10 (1.99%) Scala Developer
Libraries, Frameworks & Software Standards
1 79 (15.74%) RxJava
2 68 (13.55%) Dagger
3 62 (12.35%) Spring
4 61 (12.15%) REST
5 60 (11.95%) Android SDK
6 53 (10.56%) Web Services
7 47 (9.36%) RESTful
8 43 (8.57%) Retrofit
9 34 (6.77%) Node.js
10 33 (6.57%) Kafka
11 31 (6.18%) JSON
12 29 (5.78%) Spring Boot
13 25 (4.98%) React
14 21 (4.18%) SOAP
15 20 (3.98%) HTML
16 17 (3.39%) CSS
17 16 (3.19%) Material Design
17 16 (3.19%) XML
18 14 (2.79%) J2EE
19 12 (2.39%) AngularJS
Miscellaneous
1 78 (15.54%) Mobile App
2 62 (12.35%) User Experience
3 28 (5.58%) Greenfield Project
4 27 (5.38%) Derivative
5 25 (4.98%) Mobile Banking
6 23 (4.58%) Equity Derivative
7 18 (3.59%) Foreign Exchange (FX)
8 17 (3.39%) Fixed Income
8 17 (3.39%) Market Risk
9 16 (3.19%) Data Structures
10 15 (2.99%) Hedge funds
11 13 (2.59%) Analytical Skills
12 11 (2.19%) iPad
13 9 (1.79%) Animation
13 9 (1.79%) Equities
14 8 (1.59%) Smartphone
15 7 (1.39%) Client/Server
15 7 (1.39%) Grid Computing
15 7 (1.39%) Self-Motivation
16 6 (1.20%) Video on Demand
Operating Systems
1 319 (63.55%) Android
2 73 (14.54%) Apple iOS
3 25 (4.98%) Linux
4 13 (2.59%) Windows
5 8 (1.59%) Unix
6 6 (1.20%) Ubuntu
7 5 (1.00%) Mac OS
8 2 (0.40%) Red Hat Enterprise Linux
8 2 (0.40%) VMS
9 1 (0.20%) Mac OS X
Processes & Methodologies
1 283 (56.37%) Android Development
2 238 (47.41%) Agile Software Development
3 145 (28.88%) TDD
4 92 (18.33%) Microservices
5 78 (15.54%) Software Engineering
6 55 (10.96%) DevOps
6 55 (10.96%) Mobile Development
7 48 (9.56%) Test Automation
8 47 (9.36%) Scrum
8 47 (9.36%) Unit Testing
9 44 (8.76%) Continuous Integration
10 43 (8.57%) BDD
11 41 (8.17%) Pair Programming
12 40 (7.97%) Fintech
13 39 (7.77%) MVVM
14 27 (5.38%) iOS Development
15 26 (5.18%) E-Commerce
16 24 (4.78%) Migration
17 23 (4.58%) Analytics
17 23 (4.58%) Multithreading
Programming Languages
1 344 (68.53%) Java
2 66 (13.15%) JavaScript
3 56 (11.16%) SQL
4 50 (9.96%) Apple Swift
4 50 (9.96%) Scala
5 39 (7.77%) Java 8
5 39 (7.77%) Python
6 22 (4.38%) Clojure
7 19 (3.78%) Go
8 17 (3.39%) Objective-C
9 15 (2.99%) Ruby
10 14 (2.79%) ClojureScript
11 11 (2.19%) C#
12 9 (1.79%) C++
13 8 (1.59%) Haskell
14 6 (1.20%) C
14 6 (1.20%) Groovy
14 6 (1.20%) TypeScript
15 5 (1.00%) PHP
16 4 (0.80%) T-SQL
Qualifications
1 17 (3.39%) Degree
2 4 (0.80%) MCSE
2 4 (0.80%) Microsoft Certification
3 3 (0.60%) Master's Degree
4 2 (0.40%) Computer Science Degree
4 2 (0.40%) ISTQB
4 2 (0.40%) ISTQB Foundation Certification
Quality Assurance & Compliance
1 8 (1.59%) PSD2
2 2 (0.40%) PCI DSS
3 1 (0.20%) GDPR
System Software
1 47 (9.36%) Docker
2 8 (1.59%) HDFS
3 4 (0.80%) Active Directory
4 1 (0.20%) Virtual Machines
4 1 (0.20%) VMware Infrastructure
Systems Management
1 43 (8.57%) Kubernetes
2 18 (3.59%) Grafana
3 13 (2.59%) Ansible
4 10 (1.99%) Prometheus
5 9 (1.79%) Terraform
6 6 (1.20%) Hadoop YARN
7 5 (1.00%) Graphite
8 4 (0.80%) Consul
9 3 (0.60%) HockeyApp
9 3 (0.60%) Mesos
9 3 (0.60%) Rancher
10 2 (0.40%) Kibana
10 2 (0.40%) Opscode Chef
11 1 (0.20%) logstash
11 1 (0.20%) Marathon
11 1 (0.20%) Nagios
11 1 (0.20%) Puppet
11 1 (0.20%) StatsD
Vendors
1 54 (10.76%) Google
2 37 (7.37%) Oracle
3 15 (2.99%) Sybase
4 7 (1.39%) MuleSoft
4 7 (1.39%) Splunk
5 6 (1.20%) Microsoft
6 5 (1.00%) CA
6 5 (1.00%) CA Agile Central
7 3 (0.60%) AppDynamics
7 3 (0.60%) New Relic
7 3 (0.60%) Perforce
7 3 (0.60%) SAP
7 3 (0.60%) Xamarin
8 2 (0.40%) Apple
8 2 (0.40%) Bloomberg
8 2 (0.40%) Cypress Semiconductor
8 2 (0.40%) OutSystems
8 2 (0.40%) Reuters
8 2 (0.40%) Teradata
8 2 (0.40%) TOWER Software