Period
to 22 October 2020

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 22 October 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
6 months to
22 Oct 2020
Same period 2019 Same period 2018
Rank 188 409 596
Rank change year-on-year +221 +187 +209
Contract jobs citing Kotlin 462 484 317
As % of all contract jobs advertised in the UK 1.45% 0.57% 0.31%
As % of the Programming Languages category 3.44% 1.36% 0.69%
Number of daily rates quoted 388 351 265
Median daily rate £525 £513 £515
Median daily rate % change year-on-year +2.44% -0.49% +8.42%
10th Percentile £375 £398 £396
90th Percentile £700 £700 £661
UK excluding London median daily rate £450 £450 £400
% change year-on-year - +12.50% -3.03%
Number of hourly rates quoted 5 2 0
Median hourly rate £35.00 £70.00 -
Median hourly rate % change year-on-year -50.00% - -
UK excluding London median hourly rate £35.00 £45.00 -
% change year-on-year -22.22% - -

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 13,444 35,630 46,022
As % of all contract IT jobs advertised in the UK 42.28% 42.00% 44.55%
Number of daily rates quoted 8,822 24,705 32,293
Median daily rate £475 £475 £475
10th Percentile £310 £321 £315
90th Percentile £680 £650 £638
UK excluding London median daily rate £425 £425 £418
% change year-on-year - +1.80% +4.38%
Number of hourly rates quoted 368 690 698
Median hourly rate £35.00 £44.00 £42.00
Median hourly rate % change year-on-year -20.45% +4.76% +5.00%
10th Percentile £13.00 £19.25 £16.54
90th Percentile £53.75 £55.00 £52.50
Median hourly rate £35.00 £43.50 £42.38
% change year-on-year -19.54% +2.64% +4.65%

Kotlin
Job Vacancy Trend

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

Job vacancy trend for Kotlin in the UK

Kotlin
Contractor Daily Rate Trend

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

Daily rate trend for Kotlin in the UK

Kotlin
Daily Rate Histogram

Daily rate distribution for jobs citing Kotlin over the 6 months to 22 October 2020.

Daily rate histogram for Kotlin in the UK

Kotlin
Contractor Hourly Rate Trend

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

Hourly rate trend for Kotlin in the UK

Kotlin
Top 13 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 22 October 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
England +232 432 £525 - 177
London +175 369 £550 - 111
Work from Home -29 78 £475 +11.76% 51
UK excluding London +185 69 £450 - 73
North of England +132 44 £450 +1.69% 28
Yorkshire +97 36 £450 -5.26% 10
Scotland +52 11 £475 +5.56% 6
South East +140 9 £453 +4.96% 16
North West +85 8 £400 -5.88% 12
South West +103 3 £550 +18.92% 4
Midlands +86 1 £375 -14.29% 7
West Midlands +71 1 £375 -14.29% 3
Wales - 1 £500 - 1

For the 6 months to 22 October 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 with a requirement for Kotlin.

1 360 (77.92%) Java
2 263 (56.93%) Agile Software Development
3 182 (39.39%) Finance
4 179 (38.74%) AWS
5 173 (37.45%) Android
6 164 (35.50%) Python
7 153 (33.12%) React
8 148 (32.03%) Android Development
9 145 (31.39%) Software Engineering
10 126 (27.27%) JavaScript
11 112 (24.24%) Git (software)
12 109 (23.59%) Front Office
12 109 (23.59%) Mobile App
13 107 (23.16%) Banking
13 107 (23.16%) SQL
14 102 (22.08%) Spring
15 101 (21.86%) Jenkins
16 99 (21.43%) Microservices
17 97 (21.00%) Web Services
18 94 (20.35%) Scala
19 88 (19.05%) Asset Management
20 85 (18.40%) Test Automation
21 84 (18.18%) TDD
21 84 (18.18%) Derivative
21 84 (18.18%) AngularJS
22 83 (17.97%) Equities
23 81 (17.53%) GitHub
24 80 (17.32%) Fixed Income
24 80 (17.32%) Vue.js
25 76 (16.45%) DevOps

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 54 (11.69%) Cloud Foundry
2 45 (9.74%) Confluence
3 35 (7.58%) Apache Spark
4 32 (6.93%) Apache
5 21 (4.55%) Mule
6 8 (1.73%) WebSphere
7 7 (1.52%) Elasticsearch
7 7 (1.52%) WebLogic
8 6 (1.30%) Apache Airflow
9 4 (0.87%) Anypoint
Applications
1 1 (0.22%) Sketch
1 1 (0.22%) Zeplin
Cloud Services
1 179 (38.74%) AWS
2 81 (17.53%) GitHub
3 68 (14.72%) Serverless
4 66 (14.29%) Amazon S3
5 63 (13.64%) Amazon EC2
5 63 (13.64%) AWS Lambda
6 41 (8.87%) Azure
7 33 (7.14%) Slack
8 29 (6.28%) GCP
9 24 (5.19%) PaaS
10 21 (4.55%) IaaS
11 14 (3.03%) Cloud Computing
12 12 (2.60%) Firebase
13 8 (1.73%) Amazon ECS
14 4 (0.87%) Google Play
14 4 (0.87%) npm
14 4 (0.87%) SaaS
15 3 (0.65%) Amazon CloudWatch
15 3 (0.65%) BrowserStack
15 3 (0.65%) Sauce Labs
Communications & Networking
1 24 (5.19%) HTTPS
2 12 (2.60%) SSL
3 10 (2.16%) HTTP
4 1 (0.22%) Bluetooth
Database & Business Intelligence
1 69 (14.94%) Amazon DynamoDB
2 45 (9.74%) NoSQL
3 39 (8.44%) MongoDB
4 26 (5.63%) Apache Ignite
5 14 (3.03%) Relational Database
5 14 (3.03%) SQL Server
6 10 (2.16%) Hadoop
7 6 (1.30%) Amazon RDS
7 6 (1.30%) MySQL
8 4 (0.87%) Apache Cassandra
8 4 (0.87%) PostgreSQL
9 3 (0.65%) Big Data
9 3 (0.65%) Hazelcast
10 2 (0.43%) Amazon Redshift
10 2 (0.43%) Blockchain
10 2 (0.43%) Couchbase
10 2 (0.43%) Redis
10 2 (0.43%) SQLite
11 1 (0.22%) Azure SQL Database
11 1 (0.22%) RDBMS
Development Applications
1 112 (24.24%) Git (software)
2 101 (21.86%) Jenkins
3 74 (16.02%) JIRA
4 71 (15.37%) JUnit
5 67 (14.50%) Mockito
6 44 (9.52%) Android Studio
7 43 (9.31%) Maven
8 38 (8.23%) Xcode
9 35 (7.58%) Sonatype Nexus
10 30 (6.49%) CocoaPods
11 24 (5.19%) IntelliJ
12 21 (4.55%) Gradle
13 15 (3.25%) Cucumber
14 12 (2.60%) Selenium
15 11 (2.38%) Vagrant
16 9 (1.95%) CircleCI
16 9 (1.95%) webpack
17 8 (1.73%) git-flow
18 7 (1.52%) Ant
18 7 (1.52%) JMeter
General
1 182 (39.39%) Finance
2 109 (23.59%) Front Office
3 107 (23.16%) Banking
4 40 (8.66%) Investment Banking
5 11 (2.38%) Financial Institution
6 7 (1.52%) Games
6 7 (1.52%) Retail Banking
7 3 (0.65%) Advertising
8 2 (0.43%) Law
8 2 (0.43%) Public Sector
9 1 (0.22%) German Language
9 1 (0.22%) Legal
9 1 (0.22%) Manufacturing
Job Titles
1 319 (69.05%) Developer
2 90 (19.48%) Software Engineer
3 88 (19.05%) Android Developer
4 75 (16.23%) Developer/Software Engineer
5 71 (15.37%) Java Developer
6 58 (12.55%) Senior Developer
7 54 (11.69%) Python Developer
8 50 (10.82%) Python Engineer
9 47 (10.17%) Python Software Engineer
10 35 (7.58%) React Developer
11 33 (7.14%) JavaScript Developer
12 32 (6.93%) Full Stack Developer
12 32 (6.93%) Java Engineer
13 29 (6.28%) JavaScript Engineer
14 25 (5.41%) Scala Developer
15 21 (4.55%) .NET Developer
16 20 (4.33%) C# Developer
17 19 (4.11%) Senior Scala Developer
18 17 (3.68%) C# .NET Developer
19 16 (3.46%) iOS Developer
Libraries, Frameworks & Software Standards
1 153 (33.12%) React
2 102 (22.08%) Spring
3 97 (21.00%) Web Services
4 84 (18.18%) AngularJS
5 80 (17.32%) Vue.js
6 76 (16.45%) RxJava
7 70 (15.15%) Spring Boot
8 61 (13.20%) Node.js
9 59 (12.77%) JSON
9 59 (12.77%) REST
10 53 (11.47%) RESTful
11 47 (10.17%) Kafka
12 35 (7.58%) Material Design
12 35 (7.58%) Retrofit
13 33 (7.14%) Dagger
14 26 (5.63%) .NET
15 23 (4.98%) Hystrix
15 23 (4.98%) WireMock
16 22 (4.76%) HTML
17 20 (4.33%) CSS
Miscellaneous
1 109 (23.59%) Mobile App
2 84 (18.18%) Derivative
3 83 (17.97%) Equities
4 80 (17.32%) Fixed Income
5 70 (15.15%) Foreign Exchange (FX)
6 68 (14.72%) Hedge funds
7 41 (8.87%) User Experience
8 21 (4.55%) Greenfield Project
9 14 (3.03%) Virtual Team
10 10 (2.16%) Data Structures
10 10 (2.16%) Self-Motivation
11 9 (1.95%) Analytical Skills
11 9 (1.95%) Mobile Payment
12 8 (1.73%) Public Cloud
13 7 (1.52%) Enterprise Software
13 7 (1.52%) Mobile Banking
14 5 (1.08%) Mainframe
14 5 (1.08%) Over-the-Top Content
14 5 (1.08%) Video\Live Streaming
15 4 (0.87%) Equity Derivative
Operating Systems
1 173 (37.45%) Android
2 69 (14.94%) Apple iOS
3 6 (1.30%) Linux
4 5 (1.08%) Windows
5 4 (0.87%) Android TV
6 1 (0.22%) Mac OS X
6 1 (0.22%) Solaris
6 1 (0.22%) tvOS
6 1 (0.22%) Unix
Processes & Methodologies
1 263 (56.93%) Agile Software Development
2 148 (32.03%) Android Development
3 145 (31.39%) Software Engineering
4 99 (21.43%) Microservices
5 88 (19.05%) Asset Management
6 85 (18.40%) Test Automation
7 84 (18.18%) TDD
8 76 (16.45%) DevOps
9 64 (13.85%) Scrum
10 57 (12.34%) Pair Programming
11 55 (11.90%) Continuous Delivery
12 54 (11.69%) Continuous Integration
13 52 (11.26%) Fintech
14 45 (9.74%) iOS Development
15 44 (9.52%) Investment Management
15 44 (9.52%) SDLC
16 42 (9.09%) Architectural Design
17 40 (8.66%) Kanban
18 36 (7.79%) OO
19 35 (7.58%) Mobile Development
Programming Languages
1 360 (77.92%) Java
2 164 (35.50%) Python
3 126 (27.27%) JavaScript
4 107 (23.16%) SQL
5 94 (20.35%) Scala
6 75 (16.23%) Java 8
7 60 (12.99%) Apple Swift
8 51 (11.04%) TypeScript
9 42 (9.09%) C#
10 19 (4.11%) Clojure
11 13 (2.81%) Bash Shell
11 13 (2.81%) C++
12 11 (2.38%) Objective-C
13 10 (2.16%) Go
14 5 (1.08%) C
14 5 (1.08%) ES6
15 3 (0.65%) PHP
16 2 (0.43%) ClojureScript
16 2 (0.43%) Haskell
17 1 (0.22%) F#
Qualifications
1 16 (3.46%) Degree
2 8 (1.73%) Computer Science Degree
3 7 (1.52%) TOGAF Certification
4 4 (0.87%) ISTQB
4 4 (0.87%) ISTQB Foundation Certification
5 3 (0.65%) Security Cleared
6 2 (0.43%) PhD
6 2 (0.43%) SC Cleared
7 1 (0.22%) DBS Check
7 1 (0.22%) Master's Degree
Quality Assurance & Compliance
1 5 (1.08%) QA
2 1 (0.22%) ISO 20022
2 1 (0.22%) SEPA
2 1 (0.22%) TARGET2
System Software
1 45 (9.74%) Docker
2 1 (0.22%) Virtual Machines
Systems Management
1 50 (10.82%) Kubernetes
2 42 (9.09%) Prometheus
3 18 (3.90%) Terraform
4 15 (3.25%) Ansible
5 13 (2.81%) Zipkin
6 1 (0.22%) Grafana
Vendors
1 60 (12.99%) AppDynamics
1 60 (12.99%) Splunk
2 24 (5.19%) MuleSoft
3 12 (2.60%) Bloomberg
3 12 (2.60%) Google
4 9 (1.95%) Oracle
5 7 (1.52%) Cognizant
6 6 (1.30%) Xamarin
7 3 (0.65%) Adobe
7 3 (0.65%) Apple
8 2 (0.43%) Confluent
8 2 (0.43%) Facebook
8 2 (0.43%) IBM
8 2 (0.43%) OutSystems
9 1 (0.22%) CA
9 1 (0.22%) CA Agile Central
9 1 (0.22%) Microsoft
9 1 (0.22%) Salesforce.com