Period
to 1 December 2020

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 1 December 2020 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
1 Dec 2020
Same period 2019 Same period 2018
Rank 159 379 560
Rank change year-on-year +220 +181 +197
Contract jobs citing Kotlin 527 465 336
As % of all contract jobs advertised in England 1.69% 0.63% 0.36%
As % of the Programming Languages category 3.96% 1.51% 0.80%
Number of daily rates quoted 470 334 274
Median daily rate £525 £500 £518
Median daily rate % change year-on-year +5.00% -3.38% +16.29%
10th Percentile £381 £371 £410
90th Percentile £725 £700 £675
UK median daily rate £525 £500 £515
% change year-on-year +5.00% -2.91% +18.39%
Number of hourly rates quoted 7 4 0
Median hourly rate £35.00 £46.93 -
Median hourly rate % change year-on-year -25.41% - -
UK median hourly rate £35.00 £46.93 -
% change year-on-year -25.41% - -

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 13,292 30,800 42,198
As % of all contract IT jobs advertised in England 42.54% 41.62% 45.05%
Number of daily rates quoted 8,826 21,444 30,124
Median daily rate £485 £488 £475
Median daily rate % change year-on-year -0.51% +2.63% +2.70%
10th Percentile £310 £325 £321
90th Percentile £688 £650 £650
UK median daily rate £475 £475 £475
Number of hourly rates quoted 383 605 614
Median hourly rate £37.00 £43.50 £42.10
Median hourly rate % change year-on-year -14.94% +3.34% +5.24%
10th Percentile £13.00 £17.00 £17.00
90th Percentile £58.74 £55.00 £52.50
Median hourly rate £35.00 £42.50 £42.00
% change year-on-year -17.65% +1.19% +5.00%

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 1 December 2020.

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
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 1 December 2020. 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 +158 437 £550 +3.77% 94
North of England +118 59 £450 -2.70% 33
Yorkshire +79 49 £450 -5.26% 10
South East +126 13 £453 +13.16% 12
North West +59 10 £400 -5.88% 10
South West +105 5 £504 +13.52% 9
Kotlin
UK

For the 6 months to 1 December 2020, 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.

1 418 (79.32%) Java
2 303 (57.50%) Agile Software Development
3 231 (43.83%) Finance
4 228 (43.26%) AWS
5 224 (42.50%) React
6 216 (40.99%) Python
7 211 (40.04%) Software Engineering
8 191 (36.24%) Android
9 189 (35.86%) JavaScript
10 163 (30.93%) Front Office
11 157 (29.79%) Android Development
12 150 (28.46%) Web Services
13 139 (26.38%) Asset Management
13 139 (26.38%) Mobile App
14 135 (25.62%) Git (software)
15 123 (23.34%) Jenkins
16 122 (23.15%) Derivative
17 119 (22.58%) Equities
17 119 (22.58%) Spring
18 116 (22.01%) Fixed Income
18 116 (22.01%) Node.js
19 115 (21.82%) SQL
20 110 (20.87%) Banking
21 106 (20.11%) TDD
21 106 (20.11%) Test Automation
22 97 (18.41%) AngularJS
23 96 (18.22%) GitHub
24 92 (17.46%) Spring Boot
24 92 (17.46%) Microservices
24 92 (17.46%) JIRA

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 65 (12.33%) Apache
2 62 (11.76%) Cloud Foundry
3 59 (11.20%) Confluence
4 46 (8.73%) Apache Spark
5 27 (5.12%) Mule
6 13 (2.47%) WebSphere
7 12 (2.28%) WebLogic
8 9 (1.71%) Apache Airflow
9 7 (1.33%) Elasticsearch
10 3 (0.57%) Anypoint
11 2 (0.38%) CMS
Applications
1 2 (0.38%) Sketch
1 2 (0.38%) Zeplin
Cloud Services
1 228 (43.26%) AWS
2 96 (18.22%) GitHub
3 82 (15.56%) Serverless
4 78 (14.80%) Amazon S3
5 75 (14.23%) Amazon EC2
5 75 (14.23%) AWS Lambda
6 45 (8.54%) Slack
7 43 (8.16%) Azure
8 36 (6.83%) PaaS
9 31 (5.88%) GCP
10 27 (5.12%) IaaS
11 16 (3.04%) Cloud Computing
12 12 (2.28%) Firebase
13 11 (2.09%) Amazon ECS
14 7 (1.33%) SaaS
15 4 (0.76%) Amazon SQS
15 4 (0.76%) Google Play
15 4 (0.76%) npm
16 3 (0.57%) BrowserStack
16 3 (0.57%) Sauce Labs
Communications & Networking
1 15 (2.85%) HTTP
1 15 (2.85%) HTTPS
2 1 (0.19%) Bluetooth
Database & Business Intelligence
1 84 (15.94%) Amazon DynamoDB
2 56 (10.63%) Apache Ignite
3 46 (8.73%) MongoDB
4 42 (7.97%) NoSQL
5 18 (3.42%) SQL Server
6 15 (2.85%) Relational Database
7 10 (1.90%) Hadoop
8 9 (1.71%) Amazon RDS
9 8 (1.52%) Redis
10 7 (1.33%) Hazelcast
11 6 (1.14%) Couchbase
12 5 (0.95%) Apache Cassandra
12 5 (0.95%) MySQL
13 4 (0.76%) PostgreSQL
13 4 (0.76%) SQLite
14 3 (0.57%) Big Data
14 3 (0.57%) InfluxDB
15 2 (0.38%) Amazon Redshift
16 1 (0.19%) Azure SQL Database
16 1 (0.19%) RDBMS
Development Applications
1 135 (25.62%) Git (software)
2 123 (23.34%) Jenkins
3 92 (17.46%) JIRA
4 74 (14.04%) JUnit
5 73 (13.85%) Mockito
6 61 (11.57%) Android Studio
7 60 (11.39%) Maven
8 51 (9.68%) Xcode
9 48 (9.11%) Sonatype Nexus
10 43 (8.16%) CocoaPods
11 30 (5.69%) IntelliJ
12 29 (5.50%) Gradle
13 16 (3.04%) Cucumber
13 16 (3.04%) git-flow
14 14 (2.66%) Selenium
15 13 (2.47%) Cypress.io
15 13 (2.47%) JMeter
16 12 (2.28%) Ant
16 12 (2.28%) webpack
17 9 (1.71%) CircleCI
General
1 231 (43.83%) Finance
2 163 (30.93%) Front Office
3 110 (20.87%) Banking
4 39 (7.40%) Investment Banking
5 11 (2.09%) Games
6 7 (1.33%) Retail Banking
7 6 (1.14%) Financial Institution
8 4 (0.76%) German Language
8 4 (0.76%) Law
9 3 (0.57%) Advertising
9 3 (0.57%) Public Sector
10 1 (0.19%) Aerospace
10 1 (0.19%) Electronics
10 1 (0.19%) Legal
10 1 (0.19%) Manufacturing
10 1 (0.19%) Marketing
10 1 (0.19%) Telecoms
Job Titles
1 352 (66.79%) Developer
2 137 (26.00%) Software Engineer
3 111 (21.06%) Developer/Software Engineer
4 88 (16.70%) Android Developer
5 75 (14.23%) Python Developer
6 74 (14.04%) Python Engineer
7 71 (13.47%) Python Software Engineer
8 59 (11.20%) Java Developer
9 50 (9.49%) Senior Developer
10 48 (9.11%) React Developer
11 41 (7.78%) Java Engineer
12 39 (7.40%) JavaScript Developer
13 35 (6.64%) JavaScript Engineer
14 32 (6.07%) Full Stack Developer
15 25 (4.74%) .NET Developer
16 23 (4.36%) C# Developer
16 23 (4.36%) iOS Developer
17 22 (4.17%) Software Developer
18 20 (3.80%) C# .NET Developer
19 19 (3.61%) Android Engineer
Libraries, Frameworks & Software Standards
1 224 (42.50%) React
2 150 (28.46%) Web Services
3 119 (22.58%) Spring
4 116 (22.01%) Node.js
5 97 (18.41%) AngularJS
6 92 (17.46%) Spring Boot
7 87 (16.51%) Vue.js
8 83 (15.75%) RxJava
9 76 (14.42%) JSON
9 76 (14.42%) REST
10 61 (11.57%) RESTful
11 45 (8.54%) gRPC
12 36 (6.83%) Protocol Buffers
13 35 (6.64%) Kafka
14 34 (6.45%) Dagger
15 33 (6.26%) .NET
16 31 (5.88%) Material Design
17 29 (5.50%) HTML
17 29 (5.50%) Retrofit
17 29 (5.50%) WireMock
Miscellaneous
1 139 (26.38%) Mobile App
2 122 (23.15%) Derivative
3 119 (22.58%) Equities
4 116 (22.01%) Fixed Income
5 82 (15.56%) Foreign Exchange (FX)
6 74 (14.04%) Hedge funds
7 62 (11.76%) User Experience
8 25 (4.74%) Greenfield Project
9 16 (3.04%) Data Structures
10 14 (2.66%) Mobile Payment
11 10 (1.90%) Enterprise Software
12 9 (1.71%) Analytical Skills
12 9 (1.71%) Virtual Team
13 8 (1.52%) Public Cloud
14 7 (1.33%) Over-the-Top Content
14 7 (1.33%) Self-Motivation
15 6 (1.14%) Video\Live Streaming
16 5 (0.95%) Equity Derivative
16 5 (0.95%) Mainframe
16 5 (0.95%) Mobile Banking
Operating Systems
1 191 (36.24%) Android
2 87 (16.51%) Apple iOS
3 6 (1.14%) Windows
4 4 (0.76%) Android TV
4 4 (0.76%) Linux
5 1 (0.19%) Mac OS
5 1 (0.19%) Mac OS X
5 1 (0.19%) Solaris
5 1 (0.19%) tvOS
5 1 (0.19%) Unix
Processes & Methodologies
1 303 (57.50%) Agile Software Development
2 211 (40.04%) Software Engineering
3 157 (29.79%) Android Development
4 139 (26.38%) Asset Management
5 106 (20.11%) TDD
5 106 (20.11%) Test Automation
6 92 (17.46%) Microservices
7 87 (16.51%) Scrum
8 81 (15.37%) DevOps
8 81 (15.37%) Investment Management
9 70 (13.28%) Pair Programming
10 56 (10.63%) iOS Development
11 55 (10.44%) Continuous Delivery
12 54 (10.25%) Kanban
13 52 (9.87%) Continuous Integration
14 47 (8.92%) SDLC
15 45 (8.54%) Fintech
16 40 (7.59%) BDD
17 38 (7.21%) Mobile Development
17 38 (7.21%) Portfolio Management
Programming Languages
1 418 (79.32%) Java
2 216 (40.99%) Python
3 189 (35.86%) JavaScript
4 115 (21.82%) SQL
5 92 (17.46%) Scala
6 87 (16.51%) Java 8
7 76 (14.42%) Apple Swift
8 72 (13.66%) TypeScript
9 64 (12.14%) C#
10 27 (5.12%) C++
11 26 (4.93%) Clojure
12 12 (2.28%) Objective-C
13 10 (1.90%) Bash Shell
14 7 (1.33%) Go
15 6 (1.14%) PHP
16 4 (0.76%) C
16 4 (0.76%) ClojureScript
16 4 (0.76%) ES6
17 2 (0.38%) Dart
18 1 (0.19%) Ruby
Qualifications
1 30 (5.69%) Degree
2 11 (2.09%) Computer Science Degree
3 7 (1.33%) TOGAF Certification
4 4 (0.76%) ISTQB
4 4 (0.76%) ISTQB Foundation Certification
5 3 (0.57%) Security Cleared
6 2 (0.38%) SC Cleared
7 1 (0.19%) DBS Check
7 1 (0.19%) Master's Degree
Quality Assurance & Compliance
1 6 (1.14%) QA
2 1 (0.19%) ISO 20022
2 1 (0.19%) SEPA
2 1 (0.19%) TARGET2
System Software
1 84 (15.94%) Docker
2 1 (0.19%) Virtual Machines
Systems Management
1 89 (16.89%) Kubernetes
2 57 (10.82%) Terraform
3 35 (6.64%) Prometheus
4 14 (2.66%) Ansible
5 4 (0.76%) Zipkin
6 3 (0.57%) Grafana
7 1 (0.19%) Rancher
Vendors
1 74 (14.04%) AppDynamics
1 74 (14.04%) Splunk
2 36 (6.83%) Bloomberg
3 26 (4.93%) MuleSoft
4 13 (2.47%) Google
5 10 (1.90%) Oracle
6 7 (1.33%) Cognizant
7 6 (1.14%) Xamarin
8 3 (0.57%) Adobe
8 3 (0.57%) Facebook
9 2 (0.38%) Apple
9 2 (0.38%) Confluent
9 2 (0.38%) IBM
9 2 (0.38%) OutSystems
10 1 (0.19%) CA
10 1 (0.19%) CA Agile Central
10 1 (0.19%) Microsoft
10 1 (0.19%) Salesforce.com
10 1 (0.19%) SAP