Period
to 18 May 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 18 May 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
18 May 2021
Same period 2020 Same period 2019
Rank 215 289 509
Rank change year-on-year +74 +220 +86
Contract jobs citing Kotlin 558 374 350
As % of all contract jobs advertised in England 1.23% 0.84% 0.42%
As % of the Programming Languages category 2.99% 2.05% 0.96%
Number of daily rates quoted 458 276 267
10th Percentile £411 £376 £375
25th Percentile £458 £420 £438
Median daily rate (50th Percentile) £525 £525 £538
Median % change year-on-year - -2.33% +2.38%
75th Percentile £643 £625 £638
90th Percentile £713 £713 £700
UK median daily rate £525 £500 £525
% change year-on-year +5.00% -4.76% +2.44%
Number of hourly rates quoted 7 10 3
10th Percentile £62.40 £44.18 £61.63
25th Percentile " £54.19 £61.96
Median hourly rate £64.00 £61.50 £65.00
Median % change year-on-year +4.07% -5.38% +160.00%
75th Percentile £65.00 £63.75 £82.50
90th Percentile £66.94 £70.43 £91.50
UK median hourly rate £64.00 £61.50 £65.00
% change year-on-year +4.07% -5.38% +160.00%

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 18,653 18,235 36,337
As % of all contract IT jobs advertised in England 40.96% 41.16% 43.24%
Number of daily rates quoted 13,322 13,027 25,834
10th Percentile £325 £325 £325
25th Percentile £408 £406 £400
Median daily rate (50th Percentile) £500 £500 £488
Median % change year-on-year - +2.56% +2.63%
75th Percentile £600 £588 £575
90th Percentile £688 £675 £650
UK median daily rate £500 £488 £475
% change year-on-year +2.56% +2.63% +2.70%
Number of hourly rates quoted 372 308 563
10th Percentile £17.03 £17.68 £18.00
25th Percentile £24.00 £21.92 £30.75
Median hourly rate £41.15 £43.00 £43.50
Median % change year-on-year -4.30% -1.15% +7.41%
75th Percentile £52.50 £50.00 £50.00
90th Percentile £61.90 £57.50 £53.75
UK median hourly rate £41.00 £42.50 £43.00
% change year-on-year -3.53% -1.16% +7.50%

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 18 May 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
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 18 May 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 +44 460 £525 -4.55% 141
South West +58 20 £488 -11.96% 17
North of England +4 20 £425 -5.56% 44
South East +16 19 £525 +23.53% 16
Yorkshire +8 11 £450 -5.26% 10
North West +16 8 £350 -17.65% 28
East of England +24 4 £463 +7.56% 13
North East +12 1 £425 +11.48% 6
Kotlin
UK

For the 6 months to 18 May 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.

1 412 (73.84%) Java
2 295 (52.87%) Agile Software Development
3 249 (44.62%) Software Engineering
4 223 (39.96%) Android
5 213 (38.17%) Finance
6 183 (32.80%) JavaScript
7 179 (32.08%) Android Development
8 178 (31.90%) AWS
9 163 (29.21%) React
10 162 (29.03%) Python
11 152 (27.24%) Azure
12 136 (24.37%) Kubernetes
13 130 (23.30%) Docker
14 125 (22.40%) Front Office
15 122 (21.86%) TDD
16 120 (21.51%) Asset Management
17 117 (20.97%) Mobile App
18 116 (20.79%) Web Services
19 112 (20.07%) GCP
20 107 (19.18%) Node.js
21 104 (18.64%) Microservices
22 101 (18.10%) User Experience
23 94 (16.85%) Investment Management
24 92 (16.49%) Social Skills
25 91 (16.31%) TypeScript
26 88 (15.77%) Spring
27 85 (15.23%) RxJava
28 81 (14.52%) Git (software)
29 80 (14.34%) Scala
29 80 (14.34%) Jenkins

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 23 (4.12%) Cloud Foundry
2 19 (3.41%) Confluence
3 14 (2.51%) Apache
4 11 (1.97%) Apache Spark
5 3 (0.54%) CMS
5 3 (0.54%) Ethereum
6 2 (0.36%) Elasticsearch
6 2 (0.36%) Hyperledger
6 2 (0.36%) IBM Domino
6 2 (0.36%) Wowza Streaming Engine
7 1 (0.18%) Apache Airflow
7 1 (0.18%) SharePoint
Business Applications
1 2 (0.36%) Distributed Ledger
1 2 (0.36%) Dynamics NAV
1 2 (0.36%) R3 Corda
2 1 (0.18%) Payment Gateway
Cloud Services
1 178 (31.90%) AWS
2 152 (27.24%) Azure
3 112 (20.07%) GCP
4 38 (6.81%) GitHub
5 33 (5.91%) Serverless
6 28 (5.02%) AWS Lambda
7 26 (4.66%) Amazon S3
8 25 (4.48%) Amazon EC2
9 14 (2.51%) Firebase
10 13 (2.33%) Bitrise
10 13 (2.33%) PaaS
11 6 (1.08%) OpenShift
11 6 (1.08%) Slack
12 4 (0.72%) IaaS
12 4 (0.72%) SaaS
13 3 (0.54%) Flurry Analytics
13 3 (0.54%) PubNub
14 2 (0.36%) Amazon Kinesis
14 2 (0.36%) Amazon SQS
14 2 (0.36%) TestFlight
Communications & Networking
1 15 (2.69%) HTTPS
2 5 (0.90%) HTTP
2 5 (0.90%) SSL
3 4 (0.72%) Internet
4 3 (0.54%) 2G
5 2 (0.36%) RTMP
5 2 (0.36%) Wi-Fi
6 1 (0.18%) Bluetooth
6 1 (0.18%) NFC
Database & Business Intelligence
1 26 (4.66%) Amazon DynamoDB
2 13 (2.33%) Apache Ignite
2 13 (2.33%) Blockchain
2 13 (2.33%) NoSQL
3 12 (2.15%) SQLite
4 9 (1.61%) Relational Database
5 7 (1.25%) MongoDB
6 5 (0.90%) PostgreSQL
6 5 (0.90%) SQL Server
7 4 (0.72%) Redis
8 3 (0.54%) Couchbase
8 3 (0.54%) Mixpanel
9 2 (0.36%) Hadoop
9 2 (0.36%) Hazelcast
9 2 (0.36%) MySQL
9 2 (0.36%) Power BI
9 2 (0.36%) RDBMS
10 1 (0.18%) Amazon RDS
10 1 (0.18%) Big Data
10 1 (0.18%) HBase
Development Applications
1 81 (14.52%) Git (software)
2 80 (14.34%) Jenkins
3 39 (6.99%) JIRA
4 37 (6.63%) JUnit
5 30 (5.38%) Mockito
6 20 (3.58%) Android Studio
7 15 (2.69%) git-flow
7 15 (2.69%) Gradle
8 13 (2.33%) Maven
9 10 (1.79%) GitLab
10 9 (1.61%) TeamCity
11 8 (1.43%) Atlassian Bamboo
12 7 (1.25%) Appium
12 7 (1.25%) Cucumber
12 7 (1.25%) fastlane
12 7 (1.25%) Postman
13 6 (1.08%) Calabash
13 6 (1.08%) RSpec
13 6 (1.08%) Xcode
14 5 (0.90%) Bitbucket
General
1 213 (38.17%) Finance
2 125 (22.40%) Front Office
3 92 (16.49%) Social Skills
4 50 (8.96%) Banking
5 18 (3.23%) Analytical Skills
6 16 (2.87%) Manufacturing
6 16 (2.87%) Telecoms
7 15 (2.69%) Public Sector
8 14 (2.51%) Games
9 11 (1.97%) Retail
10 10 (1.79%) Automotive
11 9 (1.61%) Electronics
11 9 (1.61%) Investment Banking
11 9 (1.61%) Marketing
12 8 (1.43%) Wearables
13 5 (0.90%) Law
14 4 (0.72%) Back Office
14 4 (0.72%) Publishing
15 3 (0.54%) Retail Banking
16 2 (0.36%) Financial Institution
Job Titles
1 451 (80.82%) Developer
2 154 (27.60%) Android Developer
3 103 (18.46%) React Developer
4 97 (17.38%) Java Developer
5 69 (12.37%) Designer
6 68 (12.19%) UI Developer
7 67 (12.01%) UI Designer
7 67 (12.01%) UI Engineer
7 67 (12.01%) UI/UX Designer
7 67 (12.01%) UI/UX Developer
7 67 (12.01%) UX Designer
7 67 (12.01%) UX Developer
7 67 (12.01%) UX Engineer
8 63 (11.29%) Software Engineer
9 62 (11.11%) Senior Developer
10 41 (7.35%) Python Developer
11 37 (6.63%) Developer/Software Engineer
12 30 (5.38%) Senior Android Developer
13 29 (5.20%) Android Engineer
13 29 (5.20%) Python Software Engineer
Libraries, Frameworks & Software Standards
1 163 (29.21%) React
2 116 (20.79%) Web Services
3 107 (19.18%) Node.js
4 88 (15.77%) Spring
5 85 (15.23%) RxJava
6 76 (13.62%) REST
7 62 (11.11%) RESTful
8 54 (9.68%) Spring Boot
9 53 (9.50%) AngularJS
10 52 (9.32%) Dagger
11 48 (8.60%) Vue.js
12 47 (8.42%) GraphQL
13 35 (6.27%) Android SDK
14 30 (5.38%) Kafka
15 27 (4.84%) HTML
16 26 (4.66%) JSON
17 24 (4.30%) CSS
17 24 (4.30%) Retrofit
18 19 (3.41%) React Native
19 17 (3.05%) Material Design
Miscellaneous
1 117 (20.97%) Mobile App
2 101 (18.10%) User Experience
3 63 (11.29%) Derivative
4 58 (10.39%) Equities
5 55 (9.86%) Foreign Exchange (FX)
6 52 (9.32%) Fixed Income
7 43 (7.71%) Greenfield Project
8 24 (4.30%) Hedge funds
9 19 (3.41%) Credit Risk
10 18 (3.23%) Cloud Native
11 11 (1.97%) Equity Derivative
12 7 (1.25%) Mobile Payment
12 7 (1.25%) Virtual Team
13 4 (0.72%) Algorithms
13 4 (0.72%) Data Structures
13 4 (0.72%) Media Streaming
13 4 (0.72%) Self-Motivation
14 3 (0.54%) Animation
14 3 (0.54%) Linux Command Line
14 3 (0.54%) Video\Live Streaming
Operating Systems
1 223 (39.96%) Android
2 42 (7.53%) Apple iOS
3 10 (1.79%) Linux
4 5 (0.90%) Android TV
4 5 (0.90%) Windows
5 4 (0.72%) Unix
6 2 (0.36%) Mac OS
Processes & Methodologies
1 295 (52.87%) Agile Software Development
2 249 (44.62%) Software Engineering
3 179 (32.08%) Android Development
4 122 (21.86%) TDD
5 120 (21.51%) Asset Management
6 104 (18.64%) Microservices
7 94 (16.85%) Investment Management
8 73 (13.08%) Release Management
9 69 (12.37%) Mobile Development
10 68 (12.19%) Portfolio Management
11 67 (12.01%) Release Automation
11 67 (12.01%) Test Automation
11 67 (12.01%) Wireframes
12 66 (11.83%) MVVM
13 63 (11.29%) DevOps
14 60 (10.75%) Continuous Delivery
15 59 (10.57%) Pair Programming
16 56 (10.04%) Continuous Integration
17 40 (7.17%) Scrum
18 37 (6.63%) SDLC
Programming Languages
1 412 (73.84%) Java
2 183 (32.80%) JavaScript
3 162 (29.03%) Python
4 91 (16.31%) TypeScript
5 80 (14.34%) Scala
6 50 (8.96%) C#
7 49 (8.78%) SQL
8 47 (8.42%) Java 8
9 46 (8.24%) Apple Swift
9 46 (8.24%) C++
10 30 (5.38%) Objective-C
11 11 (1.97%) Go
12 7 (1.25%) C
12 7 (1.25%) Ruby
13 6 (1.08%) Groovy
14 5 (0.90%) Clojure
14 5 (0.90%) Dart
14 5 (0.90%) PHP
15 3 (0.54%) ES6
15 3 (0.54%) PowerShell
Qualifications
1 77 (13.80%) Degree
2 11 (1.97%) SC Cleared
2 11 (1.97%) Security Cleared
3 4 (0.72%) Computer Science Degree
4 2 (0.36%) BPSS Clearance
5 1 (0.18%) ISTQB
5 1 (0.18%) ISTQB Foundation Certification
5 1 (0.18%) SANS
5 1 (0.18%) TOGAF Certification
Quality Assurance & Compliance
1 10 (1.79%) QA
2 1 (0.18%) Disclosure Scotland
2 1 (0.18%) GDPR
2 1 (0.18%) HIPAA
2 1 (0.18%) ISO 20022
2 1 (0.18%) PSD2
2 1 (0.18%) SEPA
2 1 (0.18%) TARGET2
2 1 (0.18%) WCAG
System Software
1 130 (23.30%) Docker
2 1 (0.18%) HDFS
Systems Management
1 136 (24.37%) Kubernetes
2 78 (13.98%) Terraform
3 18 (3.23%) Prometheus
4 8 (1.43%) Zipkin
5 7 (1.25%) Istio
6 5 (0.90%) Ansible
7 4 (0.72%) Puppet
8 2 (0.36%) Bugsnag
8 2 (0.36%) linkerd
9 1 (0.18%) Grafana
9 1 (0.18%) HP Fortify
9 1 (0.18%) Opscode Chef
Vendors
1 18 (3.23%) CA Agile Central
2 16 (2.87%) CA
3 10 (1.79%) MuleSoft
3 10 (1.79%) Splunk
4 9 (1.61%) AppDynamics
4 9 (1.61%) SAP
5 8 (1.43%) Bloomberg
5 8 (1.43%) Google
5 8 (1.43%) Xamarin
6 7 (1.25%) Solace
7 6 (1.08%) Microsoft
8 4 (0.72%) Apple
9 2 (0.36%) Oracle
9 2 (0.36%) Salesforce.com
9 2 (0.36%) SendGrid
9 2 (0.36%) Telerik
9 2 (0.36%) Xerox
10 1 (0.18%) Dell
10 1 (0.18%) HP
10 1 (0.18%) IBM