Period
to 25 August 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 25 August 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
25 Aug 2019
Same period 2018 Same period 2017
Rank 465 615 826
Rank change year-on-year +150 +211 +90
Contract jobs citing Kotlin 417 311 50
As % of all contract IT jobs advertised in the UK 0.47% 0.30% 0.052%
As % of the Programming Languages category 1.10% 0.68% 0.12%
Number of daily rates quoted 312 258 42
UK median daily rate £525 £525 £531
Median daily rate % change year-on-year - -1.18% -7.61%
10th Percentile £363 £400 £364
90th Percentile £709 £675 £649
UK excluding London median daily rate £450 £410 £410
% change year-on-year +9.76% - -
Number of hourly rates quoted 2 0 0
UK median hourly rate £75.20 - -
UK excluding London median hourly rate - - -

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 37,825 45,574 40,661
As % of all contract IT jobs advertised in the UK 42.25% 44.28% 41.96%
Number of daily rates quoted 26,154 31,968 27,917
UK median daily rate £475 £463 £450
Median daily rate % change year-on-year +2.70% +2.78% +5.88%
10th Percentile £323 £313 £300
90th Percentile £650 £638 £625
UK excluding London median daily rate £425 £413 £400
% change year-on-year +3.03% +3.13% +6.67%
Number of hourly rates quoted 677 755 779
UK median hourly rate £43.50 £41.00 £40.00
Median hourly rate % change year-on-year +6.10% +2.50% +6.67%
10th Percentile £20.50 £16.82 £15.78
90th Percentile £55.70 £52.50 £53.75
UK excluding London median hourly rate £43.50 £41.50 £40.00
% change year-on-year +4.82% +3.75% +6.67%

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 25 August 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
Contractor Hourly Rate Histogram

The hourly rate distribution of IT jobs citing Kotlin over the 6 months to 25 August 2019.

Contractor hourly rate histogram 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 25 August 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 +143 396 £538 +2.38% 222
London +101 312 £550 - 144
UK excluding London +85 102 £450 +9.76% 97
South East +65 43 £450 +20.00% 18
North of England +33 26 £435 +3.57% 27
Scotland +47 20 £450 +12.50% 12
Yorkshire +26 14 £463 +10.12% 10
North West +25 12 £400 +14.29% 17
South West -19 11 £475 +5.56% 7
Midlands +29 1 £350 +16.67% 16
East of England +27 1 £350 -24.32% 10
West Midlands - 1 £350 - 10

For the 6 months to 25 August 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.

1 313 (75.06%) Java
2 265 (63.55%) Android
3 226 (54.20%) Android Development
4 188 (45.08%) Agile Software Development
5 125 (29.98%) TDD
6 69 (16.55%) RxJava
7 67 (16.07%) Microservices
8 66 (15.83%) Mobile App
9 63 (15.11%) Banking
10 62 (14.87%) Apple iOS
11 57 (13.67%) REST
11 57 (13.67%) Dagger
12 55 (13.19%) User Experience
12 55 (13.19%) Software Engineering
13 54 (12.95%) Git (software)
14 53 (12.71%) JavaScript
15 52 (12.47%) RESTful
16 50 (11.99%) Continuous Integration
16 50 (11.99%) Docker
17 49 (11.75%) AWS
17 49 (11.75%) Scala
18 47 (11.27%) Finance
18 47 (11.27%) Kubernetes
19 46 (11.03%) Android SDK
20 45 (10.79%) Spring
21 44 (10.55%) Jenkins
21 44 (10.55%) Fintech
22 42 (10.07%) Web Services
23 41 (9.83%) Mobile Development
24 40 (9.59%) Android Studio

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 15 (3.60%) Apache Spark
2 11 (2.64%) Confluence
3 6 (1.44%) Elasticsearch
3 6 (1.44%) Jetty
4 5 (1.20%) Apache
4 5 (1.20%) Cloud Foundry
5 4 (0.96%) Apache Pig
5 4 (0.96%) ColdFusion
6 3 (0.72%) Skype for Business
7 2 (0.48%) Ethereum
7 2 (0.48%) Hyperledger
7 2 (0.48%) nginx
8 1 (0.24%) Oracle Application Server
8 1 (0.24%) Tomcat
8 1 (0.24%) WebLogic
8 1 (0.24%) WebSphere
8 1 (0.24%) WebSphere Application Server
Applications
1 8 (1.92%) Sketch
1 8 (1.92%) Zeplin
2 2 (0.48%) Chatbot
3 1 (0.24%) MS Visio
Business Applications
1 8 (1.92%) Distributed Ledger
2 7 (1.68%) R3 Corda
Cloud Services
1 49 (11.75%) AWS
2 17 (4.08%) Firebase
2 17 (4.08%) GitHub
3 13 (3.12%) Serverless
4 12 (2.88%) GCP
5 11 (2.64%) AWS Lambda
6 7 (1.68%) Datadog
7 6 (1.44%) Azure
7 6 (1.44%) Heroku
8 5 (1.20%) Amazon CloudWatch
8 5 (1.20%) AWS CloudFormation
9 4 (0.96%) Amazon Kinesis
9 4 (0.96%) Apigee
9 4 (0.96%) Fastly
10 3 (0.72%) AWS IoT
10 3 (0.72%) Google Play
10 3 (0.72%) OpenShift
11 2 (0.48%) Cloud Computing
11 2 (0.48%) npm
11 2 (0.48%) Slack
Communications & Networking
1 9 (2.16%) HTTP
2 6 (1.44%) DNS
2 6 (1.44%) HTTPS
2 6 (1.44%) Internet
3 4 (0.96%) FTP
4 2 (0.48%) Wi-Fi
5 1 (0.24%) Bluetooth
5 1 (0.24%) IPFS
5 1 (0.24%) Wireshark
Database & Business Intelligence
1 20 (4.80%) NoSQL
2 19 (4.56%) MongoDB
3 16 (3.84%) SQLite
4 14 (3.36%) Big Data
5 13 (3.12%) Blockchain
5 13 (3.12%) PostgreSQL
6 11 (2.64%) Amazon DynamoDB
6 11 (2.64%) MySQL
7 10 (2.40%) Apache Cassandra
8 9 (2.16%) Apache Hive
8 9 (2.16%) Hadoop
9 8 (1.92%) Redis
9 8 (1.92%) SQL Server
10 5 (1.20%) Oracle Database
11 4 (0.96%) Impala
11 4 (0.96%) InfluxDB
11 4 (0.96%) Neo4j
11 4 (0.96%) Relational Database
12 3 (0.72%) Couchbase
13 2 (0.48%) FoundationDB
Development Applications
1 54 (12.95%) Git (software)
2 44 (10.55%) Jenkins
3 40 (9.59%) Android Studio
4 29 (6.95%) Gradle
5 26 (6.24%) JIRA
6 22 (5.28%) JUnit
7 16 (3.84%) Maven
8 14 (3.36%) Cucumber
9 12 (2.88%) Subversion
9 12 (2.88%) TeamCity
10 10 (2.40%) GoCD
11 9 (2.16%) Mockito
11 9 (2.16%) Xcode
12 8 (1.92%) Selenium
13 7 (1.68%) GitLab
14 6 (1.44%) IntelliJ
14 6 (1.44%) webpack
15 5 (1.20%) Appium
15 5 (1.20%) JMeter
15 5 (1.20%) Sonatype Nexus
General
1 63 (15.11%) Banking
2 47 (11.27%) Finance
3 20 (4.80%) Retail
4 14 (3.36%) Front Office
5 10 (2.40%) Automotive
6 6 (1.44%) Games
6 6 (1.44%) Marketing
6 6 (1.44%) Publishing
7 4 (0.96%) Retail Banking
8 3 (0.72%) Advertising
9 2 (0.48%) Law
9 2 (0.48%) Local Government
10 1 (0.24%) Electronics
10 1 (0.24%) Financial Institution
10 1 (0.24%) Investment Banking
10 1 (0.24%) Public Sector
10 1 (0.24%) Swedish Language
10 1 (0.24%) Telecoms
Job Titles
1 333 (79.86%) Developer
2 203 (48.68%) Android Developer
3 67 (16.07%) Java Developer
4 58 (13.91%) Senior Developer
5 39 (9.35%) Senior Android Developer
6 18 (4.32%) Android Engineer
7 16 (3.84%) Lead Developer
7 16 (3.84%) Software Engineer
8 14 (3.36%) Lead Android Developer
9 12 (2.88%) Agile Developer
9 12 (2.88%) iOS Developer
9 12 (2.88%) Scala Developer
10 11 (2.64%) Agile Java Developer
10 11 (2.64%) Backend Developer
11 9 (2.16%) Java Engineer
11 9 (2.16%) Mobile Developer
12 8 (1.92%) Senior Software Engineer
13 7 (1.68%) DevOps Engineer
13 7 (1.68%) Senior Java Developer
14 6 (1.44%) Test Automation Engineer
Libraries, Frameworks & Software Standards
1 69 (16.55%) RxJava
2 57 (13.67%) Dagger
2 57 (13.67%) REST
3 52 (12.47%) RESTful
4 46 (11.03%) Android SDK
5 45 (10.79%) Spring
6 42 (10.07%) Web Services
7 39 (9.35%) Retrofit
8 31 (7.43%) JSON
8 31 (7.43%) Kafka
9 26 (6.24%) Spring Boot
10 25 (6.00%) HTML
11 18 (4.32%) Node.js
12 17 (4.08%) Material Design
13 16 (3.84%) CSS
13 16 (3.84%) SOAP
14 15 (3.60%) React
15 12 (2.88%) AngularJS
15 12 (2.88%) GraphQL
16 9 (2.16%) React Native
Miscellaneous
1 66 (15.83%) Mobile App
2 55 (13.19%) User Experience
3 38 (9.11%) Greenfield Project
4 15 (3.60%) Animation
4 15 (3.60%) Video on Demand
5 14 (3.36%) Mobile Banking
6 12 (2.88%) Analytical Skills
7 10 (2.40%) Derivative
8 9 (2.16%) Video\Live Streaming
9 8 (1.92%) Equity Derivative
9 8 (1.92%) iPad
9 8 (1.92%) Smartphone
10 7 (1.68%) Data Structures
11 5 (1.20%) Equities
12 4 (0.96%) Client/Server
12 4 (0.96%) Data Protection Act
12 4 (0.96%) Replication
13 3 (0.72%) Grid Computing
13 3 (0.72%) iPhone
13 3 (0.72%) Self-Motivation
Operating Systems
1 265 (63.55%) Android
2 62 (14.87%) Apple iOS
3 19 (4.56%) Linux
4 11 (2.64%) Windows
5 7 (1.68%) Mac OS
6 2 (0.48%) Red Hat Enterprise Linux
6 2 (0.48%) Unix
6 2 (0.48%) VMS
7 1 (0.24%) Android TV
7 1 (0.24%) tvOS
Processes & Methodologies
1 226 (54.20%) Android Development
2 188 (45.08%) Agile Software Development
3 125 (29.98%) TDD
4 67 (16.07%) Microservices
5 55 (13.19%) Software Engineering
6 50 (11.99%) Continuous Integration
7 44 (10.55%) Fintech
8 41 (9.83%) Mobile Development
9 39 (9.35%) DevOps
10 37 (8.87%) Test Automation
11 36 (8.63%) Pair Programming
12 35 (8.39%) Scrum
13 31 (7.43%) BDD
14 30 (7.19%) MVVM
14 30 (7.19%) Unit Testing
15 23 (5.52%) E-Commerce
16 20 (4.80%) Computer Science
16 20 (4.80%) Continuous Delivery
17 18 (4.32%) Mentoring
18 17 (4.08%) iOS Development
Programming Languages
1 313 (75.06%) Java
2 53 (12.71%) JavaScript
3 49 (11.75%) Scala
4 38 (9.11%) Apple Swift
5 32 (7.67%) Java 8
5 32 (7.67%) SQL
6 31 (7.43%) Python
7 16 (3.84%) Clojure
8 15 (3.60%) Objective-C
9 14 (3.36%) Go
9 14 (3.36%) Ruby
10 9 (2.16%) C#
10 9 (2.16%) Java 9
11 8 (1.92%) Groovy
12 7 (1.68%) PHP
12 7 (1.68%) TypeScript
13 6 (1.44%) Haskell
14 5 (1.20%) C
15 4 (0.96%) ClojureScript
15 4 (0.96%) Perl
Qualifications
1 17 (4.08%) Degree
2 3 (0.72%) Computer Science Degree
3 2 (0.48%) ISTQB
3 2 (0.48%) ISTQB Foundation Certification
3 2 (0.48%) MCSE
3 2 (0.48%) Microsoft Certification
4 1 (0.24%) CEH
4 1 (0.24%) CISSP
4 1 (0.24%) CREST Certified
4 1 (0.24%) OSCP
Quality Assurance & Compliance
1 7 (1.68%) QA
2 3 (0.72%) PSD2
3 1 (0.24%) GDPR
3 1 (0.24%) PCI DSS
System Software
1 50 (11.99%) Docker
2 2 (0.48%) Active Directory
Systems Management
1 47 (11.27%) Kubernetes
2 13 (3.12%) Grafana
3 12 (2.88%) Terraform
4 8 (1.92%) Ansible
4 8 (1.92%) Graphite
4 8 (1.92%) Kibana
5 7 (1.68%) Prometheus
6 6 (1.44%) Mesos
7 5 (1.20%) logstash
8 4 (0.96%) Hadoop YARN
8 4 (0.96%) Marathon
8 4 (0.96%) Nagios
8 4 (0.96%) Oozie
8 4 (0.96%) StatsD
9 2 (0.48%) Consul
9 2 (0.48%) Rancher
Vendors
1 31 (7.43%) Google
2 25 (6.00%) Oracle
3 8 (1.92%) Splunk
4 7 (1.68%) Microsoft
4 7 (1.68%) New Relic
5 5 (1.20%) MuleSoft
6 3 (0.72%) Xamarin
7 2 (0.48%) AppDynamics
7 2 (0.48%) Apple
7 2 (0.48%) CA
7 2 (0.48%) CA Agile Central
7 2 (0.48%) Cypress Semiconductor
7 2 (0.48%) OutSystems
7 2 (0.48%) Samsung
7 2 (0.48%) TOWER Software
8 1 (0.24%) IBM
8 1 (0.24%) Perforce
8 1 (0.24%) Reuters
8 1 (0.24%) Sage
8 1 (0.24%) Spotify