Period
to 26 September 2021

The following table provides summary statistics for contract job vacancies advertised in England 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 26 September 2021 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 > England
6 months to
26 Sep 2021
Same period 2020 Same period 2019
Rank 272 202 425
Rank change year-on-year -70 +223 +162
Contract jobs citing Kotlin 650 355 430
As % of all contract jobs advertised in England 1.02% 1.39% 0.53%
As % of the Programming Languages category 2.55% 3.23% 1.26%
Number of daily rates quoted 527 269 320
10th Percentile £413 £406 £386
25th Percentile £463 £450 £434
Median daily rate (50th Percentile) £550 £538 £525
Median % change year-on-year +2.33% +2.38% -
75th Percentile £665 £638 £625
90th Percentile £700 £690 £713
UK median daily rate £550 £525 £523
% change year-on-year +4.76% +0.48% +0.97%
Number of hourly rates quoted 10 0 1
10th Percentile £57.50 " "
25th Percentile " " £92.50
Median hourly rate £64.00 - £95.00
75th Percentile £69.00 " £97.50
90th Percentile £80.59 " "
UK median hourly rate £64.00 - £95.00

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 advertised in England with a requirement for coding skills.

All Programming Languages
England
Contract vacancies with a requirement for coding skills 25,451 10,990 34,214
As % of all contract IT jobs advertised in England 39.92% 42.93% 42.53%
Number of daily rates quoted 18,462 7,784 24,201
10th Percentile £356 £313 £325
25th Percentile £425 £400 £400
Median daily rate (50th Percentile) £525 £500 £480
Median % change year-on-year +5.00% +4.17% +1.05%
75th Percentile £625 £600 £575
90th Percentile £707 £700 £650
UK median daily rate £525 £488 £475
% change year-on-year +7.69% +2.63% -
Number of hourly rates quoted 405 219 571
10th Percentile £16.98 £12.63 £18.00
25th Percentile £24.79 £21.25 £34.00
Median hourly rate £45.00 £39.00 £45.00
Median % change year-on-year +15.38% -13.33% +7.14%
75th Percentile £57.50 £47.50 £51.50
90th Percentile £65.52 £55.00 £55.50
UK median hourly rate £45.00 £39.00 £45.00
% change year-on-year +15.38% -13.33% +8.36%

Kotlin
Job Vacancy Trend in England

Job postings citing Kotlin as a proportion of all IT jobs advertised in England.

Job vacancy trend for Kotlin in England

Kotlin
Contractor Daily Rate Trend in England

3-month moving average daily rate quoted in jobs citing Kotlin in England.

Daily rate trend for Kotlin in England

Kotlin
Daily Rate Histogram in England

Daily rate distribution for jobs citing Kotlin in England over the 6 months to 26 September 2021.

Daily rate histogram for Kotlin in England

Kotlin
Contractor Hourly Rate Trend in England

3-month moving average hourly rates quoted in jobs citing Kotlin in England.

Hourly rate trend for Kotlin in England

Kotlin
Hourly Rate Histogram in England

Hourly rate distribution of jobs citing Kotlin in England over the 6 months to 26 September 2021.

Hourly rate histogram for Kotlin in England

Kotlin
Contract Job Locations in England

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Kotlin within the England region over the 6 months to 26 September 2021. 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
London -64 526 £550 - 203
North of England -74 36 £475 +6.62% 37
Yorkshire -52 24 £475 +5.56% 9
South East -83 14 £425 -8.37% 23
North West -51 11 £466 +16.56% 23
South West -33 10 £490 -10.91% 10
Midlands -67 8 £425 +13.33% 9
West Midlands -63 7 £425 +13.33% 4
East of England - 7 £500 - 15
North East - 1 £425 - 5
East Midlands - 1 £450 - 5
Kotlin
UK

For the 6 months to 26 September 2021, 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 England region with a requirement for Kotlin.

1 500 (76.92%) Java
2 333 (51.23%) Agile Software Development
3 261 (40.15%) Android
4 220 (33.85%) Software Engineering
4 220 (33.85%) JavaScript
5 219 (33.69%) Android Development
6 199 (30.62%) Finance
7 189 (29.08%) React
8 183 (28.15%) AWS
9 149 (22.92%) TDD
10 146 (22.46%) TypeScript
11 139 (21.38%) Python
12 138 (21.23%) Azure
13 133 (20.46%) Spring
14 120 (18.46%) Full Stack Development
15 119 (18.31%) Mobile App
16 117 (18.00%) Microservices
17 114 (17.54%) Kubernetes
18 105 (16.15%) Docker
19 104 (16.00%) Web Services
19 104 (16.00%) Front Office
20 103 (15.85%) Asset Management
20 103 (15.85%) Social Skills
21 102 (15.69%) GCP
22 95 (14.62%) Scala
23 94 (14.46%) RESTful
23 94 (14.46%) Node.js
24 92 (14.15%) Derivative
25 91 (14.00%) REST
25 91 (14.00%) AngularJS

Kotlin
Co-occurring IT Skills in England 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 28 (4.31%) Confluence
2 22 (3.38%) Apache
3 19 (2.92%) Apache Airflow
3 19 (2.92%) Apache Spark
4 16 (2.46%) Elasticsearch
4 16 (2.46%) Tomcat
5 11 (1.69%) Cloud Foundry
6 3 (0.46%) IBM Domino
7 2 (0.31%) Ethereum
7 2 (0.31%) Hyperledger
7 2 (0.31%) Wowza Streaming Engine
8 1 (0.15%) Adobe Experience Manager
8 1 (0.15%) Apache Pig
8 1 (0.15%) Apache Solr
8 1 (0.15%) CMS
8 1 (0.15%) CoreMedia CMS
8 1 (0.15%) JBoss
8 1 (0.15%) WebSphere
Applications
1 1 (0.15%) Photoshop
Business Applications
1 4 (0.62%) Distributed Ledger
2 3 (0.46%) Magento
2 3 (0.46%) Payment Gateway
3 2 (0.31%) R3 Corda
3 2 (0.31%) SAP Hybris
4 1 (0.15%) Oracle Cash Management
Cloud Services
1 183 (28.15%) AWS
2 138 (21.23%) Azure
3 102 (15.69%) GCP
4 68 (10.46%) Serverless
5 53 (8.15%) AWS Lambda
6 52 (8.00%) Amazon S3
7 48 (7.38%) Amazon EC2
8 35 (5.38%) GitHub
9 14 (2.15%) Firebase
10 11 (1.69%) Slack
11 9 (1.38%) Google Play
11 9 (1.38%) OpenShift
12 7 (1.08%) PaaS
13 6 (0.92%) npm
13 6 (0.92%) SaaS
14 5 (0.77%) AWS CloudFormation
14 5 (0.77%) Google Compute Engine
15 4 (0.62%) Azure App Service
15 4 (0.62%) Cloud Computing
15 4 (0.62%) Datadog
Communications & Networking
1 21 (3.23%) HTTP
2 14 (2.15%) HTTPS
3 9 (1.38%) Internet
4 5 (0.77%) 2G
4 5 (0.77%) SSL
5 4 (0.62%) DNS
6 3 (0.46%) Intranet
7 2 (0.31%) Bluetooth
7 2 (0.31%) DHCP
7 2 (0.31%) DVB
7 2 (0.31%) Firewall
7 2 (0.31%) Multicast
7 2 (0.31%) RTMP
7 2 (0.31%) Wi-Fi
8 1 (0.15%) Broadband
Database & Business Intelligence
1 50 (7.69%) Amazon DynamoDB
2 28 (4.31%) Relational Database
3 27 (4.15%) PostgreSQL
3 27 (4.15%) SQL Server
4 19 (2.92%) Amazon Athena
4 19 (2.92%) Apache Ignite
4 19 (2.92%) NoSQL
5 16 (2.46%) Big Data
6 15 (2.31%) Data Warehouse
7 14 (2.15%) MongoDB
8 13 (2.00%) Apache Hive
9 12 (1.85%) Azure SQL Data Warehouse
9 12 (1.85%) Parquet
10 10 (1.54%) SQLite
11 9 (1.38%) MySQL
12 8 (1.23%) Blockchain
12 8 (1.23%) Tableau
13 7 (1.08%) RDBMS
14 6 (0.92%) Couchbase
14 6 (0.92%) Redis
Development Applications
1 87 (13.38%) Git (software)
2 81 (12.46%) Jenkins
3 50 (7.69%) Maven
4 49 (7.54%) Android Studio
5 46 (7.08%) JIRA
6 43 (6.62%) JUnit
7 28 (4.31%) Gradle
8 27 (4.15%) Mockito
9 16 (2.46%) Atlassian Bamboo
9 16 (2.46%) Calabash
10 15 (2.31%) Subversion
11 14 (2.15%) IntelliJ
12 13 (2.00%) GitLab
13 12 (1.85%) Cucumber
13 12 (1.85%) Hudson
13 12 (1.85%) Postman
14 11 (1.69%) Bitbucket
14 11 (1.69%) Sonatype Nexus
15 8 (1.23%) fastlane
16 7 (1.08%) Appium
General
1 199 (30.62%) Finance
2 104 (16.00%) Front Office
3 103 (15.85%) Social Skills
4 51 (7.85%) Banking
5 29 (4.46%) Games
6 28 (4.31%) Manufacturing
7 19 (2.92%) Analytical Skills
8 16 (2.46%) Retail
8 16 (2.46%) Telecoms
9 15 (2.31%) Investment Banking
10 10 (1.54%) Automotive
10 10 (1.54%) Inclusion and Diversity
10 10 (1.54%) Public Sector
11 9 (1.38%) Marketing
11 9 (1.38%) Retail Banking
12 8 (1.23%) Law
12 8 (1.23%) Publishing
13 7 (1.08%) Electronics
14 4 (0.62%) Presentation Skills
15 3 (0.46%) Military
Job Titles
1 519 (79.85%) Developer
2 197 (30.31%) Android Developer
3 91 (14.00%) React Developer
4 83 (12.77%) Java Developer
5 80 (12.31%) Software Engineer
6 70 (10.77%) Senior Developer
7 55 (8.46%) Python Developer
8 50 (7.69%) Developer/Software Engineer
9 47 (7.23%) Python Engineer
9 47 (7.23%) Python Software Engineer
10 46 (7.08%) Lead Developer
11 41 (6.31%) JavaScript Developer
12 37 (5.69%) Senior Android Developer
13 30 (4.62%) Front Office Developer
14 28 (4.31%) Designer
14 28 (4.31%) JavaScript Engineer
15 27 (4.15%) UI Engineer
15 27 (4.15%) UI/UX Designer
15 27 (4.15%) UI/UX Developer
15 27 (4.15%) UX Engineer
Libraries, Frameworks & Software Standards
1 189 (29.08%) React
2 133 (20.46%) Spring
3 104 (16.00%) Web Services
4 94 (14.46%) Node.js
4 94 (14.46%) RESTful
5 91 (14.00%) AngularJS
5 91 (14.00%) REST
6 84 (12.92%) Vue.js
7 74 (11.38%) GraphQL
8 72 (11.08%) Spring Boot
9 66 (10.15%) RxJava
10 65 (10.00%) Android SDK
11 56 (8.62%) React Native
12 55 (8.46%) HTML
13 54 (8.31%) JSON
14 53 (8.15%) Dagger
15 46 (7.08%) CSS
16 39 (6.00%) Kafka
17 30 (4.62%) Retrofit
18 29 (4.46%) OAuth
Miscellaneous
1 119 (18.31%) Mobile App
2 92 (14.15%) Derivative
3 84 (12.92%) Foreign Exchange (FX)
4 78 (12.00%) Equities
5 76 (11.69%) Fixed Income
6 73 (11.23%) User Experience
7 70 (10.77%) Greenfield Project
8 29 (4.46%) Credit Risk
8 29 (4.46%) Hedge funds
9 25 (3.85%) Data Protection Act
10 10 (1.54%) Public Cloud
11 9 (1.38%) Equity Derivative
11 9 (1.38%) Legacy Applications
12 8 (1.23%) Chromecast
12 8 (1.23%) Video\Live Streaming
13 7 (1.08%) Client/Server
13 7 (1.08%) Self-Motivation
14 6 (0.92%) Cloud Native
14 6 (0.92%) Enterprise Software
15 5 (0.77%) Data Structures
Operating Systems
1 261 (40.15%) Android
2 65 (10.00%) Apple iOS
3 13 (2.00%) Unix
4 12 (1.85%) Linux
5 8 (1.23%) Windows
6 5 (0.77%) Android TV
7 2 (0.31%) Mac OS
Processes & Methodologies
1 333 (51.23%) Agile Software Development
2 220 (33.85%) Software Engineering
3 219 (33.69%) Android Development
4 149 (22.92%) TDD
5 120 (18.46%) Full Stack Development
6 117 (18.00%) Microservices
7 103 (15.85%) Asset Management
8 90 (13.85%) Test Automation
9 68 (10.46%) DevOps
10 62 (9.54%) MVVM
11 56 (8.62%) Investment Management
12 55 (8.46%) Pair Programming
13 51 (7.85%) Scrum
14 49 (7.54%) Unit Testing
15 48 (7.38%) Analytics
16 45 (6.92%) Problem-Solving
17 44 (6.77%) Continuous Integration
18 41 (6.31%) BDD
18 41 (6.31%) Mobile Development
19 40 (6.15%) Mobile Application Development
Programming Languages
1 500 (76.92%) Java
2 220 (33.85%) JavaScript
3 146 (22.46%) TypeScript
4 139 (21.38%) Python
5 95 (14.62%) Scala
6 87 (13.38%) SQL
7 52 (8.00%) Java 8
8 51 (7.85%) Apple Swift
9 50 (7.69%) C++
10 45 (6.92%) C#
11 37 (5.69%) Objective-C
12 19 (2.92%) Go
13 12 (1.85%) C
13 12 (1.85%) PL/SQL
14 8 (1.23%) Groovy
14 8 (1.23%) Ruby
15 5 (0.77%) Bash Shell
15 5 (0.77%) PHP
16 3 (0.46%) ES6
16 3 (0.46%) Java 11
Qualifications
1 43 (6.62%) Degree
2 7 (1.08%) SC Cleared
2 7 (1.08%) Security Cleared
3 5 (0.77%) Computer Science Degree
4 4 (0.62%) ISTQB
4 4 (0.62%) ISTQB Foundation Certification
5 2 (0.31%) AWS Certification
6 1 (0.15%) DV Cleared
Quality Assurance & Compliance
1 12 (1.85%) QA
2 7 (1.08%) Accessibility
3 5 (0.77%) WCAG
4 2 (0.31%) GDPR
4 2 (0.31%) HIPAA
4 2 (0.31%) PMO
4 2 (0.31%) PSD2
5 1 (0.15%) ISO 20022
5 1 (0.15%) TARGET2
System Software
1 105 (16.15%) Docker
2 1 (0.15%) Apache ZooKeeper
Systems Management
1 114 (17.54%) Kubernetes
2 40 (6.15%) Terraform
3 13 (2.00%) Oozie
4 12 (1.85%) Ansible
4 12 (1.85%) Single Sign-On
5 9 (1.38%) Kibana
6 8 (1.23%) Docker Swarm
6 8 (1.23%) logstash
7 5 (0.77%) Bugsnag
8 4 (0.62%) Opscode Chef
8 4 (0.62%) Prometheus
8 4 (0.62%) Puppet
9 3 (0.46%) Zipkin
10 2 (0.31%) Istio
11 1 (0.15%) linkerd
Vendors
1 25 (3.85%) Google
1 25 (3.85%) Oracle
2 15 (2.31%) Xamarin
3 13 (2.00%) CA
3 13 (2.00%) CA Agile Central
3 13 (2.00%) SAP
4 11 (1.69%) AppDynamics
4 11 (1.69%) Splunk
5 9 (1.38%) Apple
6 7 (1.08%) Adobe
7 6 (0.92%) Atlassian
7 6 (0.92%) hybris
8 4 (0.62%) Salesforce.com
9 3 (0.46%) Solace
9 3 (0.46%) Xerox
10 2 (0.31%) BiZZdesign
10 2 (0.31%) Confluent
10 2 (0.31%) Roku
10 2 (0.31%) SaltStack
10 2 (0.31%) Samsung