Period
to

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 3 July 2022 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
3 Jul 2022
Same period 2021 Same period 2020
Rank 422 251 272
Rank change year-on-year -171 +21 +233
Contract jobs citing Kotlin 514 708 396
As % of all contract jobs advertised in the UK 0.58% 1.07% 0.96%
As % of the Programming Languages category 1.57% 2.64% 2.31%
Number of daily rates quoted 400 566 283
10th Percentile £462 £410 £400
25th Percentile £513 £450 £425
Median daily rate (50th Percentile) £580 £525 £525
Median % change year-on-year +10.48% - -
75th Percentile £675 £638 £620
90th Percentile £700 £700 £683
UK excluding London median daily rate £550 £465 £450
% change year-on-year +18.28% +3.33% +5.88%
Number of hourly rates quoted 10 12 7
10th Percentile £48.37 £45.00 £56.55
25th Percentile £66.13 £56.25 £59.25
Median hourly rate £73.60 £64.00 £61.50
Median % change year-on-year +14.99% +4.07% -21.81%
75th Percentile £77.09 £64.50 £63.75
90th Percentile £81.00 £68.12 £66.05
UK excluding London median hourly rate £72.50 £64.00 -
% change year-on-year +13.28% - -

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 32,705 26,818 17,140
As % of all contract IT jobs advertised in the UK 36.76% 40.42% 41.41%
Number of daily rates quoted 23,874 18,924 12,124
10th Percentile £396 £340 £325
25th Percentile £463 £413 £406
Median daily rate (50th Percentile) £550 £500 £500
Median % change year-on-year +10.00% - +5.26%
75th Percentile £668 £600 £588
90th Percentile £763 £699 £675
UK excluding London median daily rate £500 £448 £450
% change year-on-year +11.73% -0.56% +5.88%
Number of hourly rates quoted 529 473 294
10th Percentile £18.58 £16.33 £17.50
25th Percentile £35.00 £25.00 £22.00
Median hourly rate £52.50 £42.50 £42.50
Median % change year-on-year +23.53% - -3.41%
75th Percentile £63.25 £53.38 £50.00
90th Percentile £72.67 £64.00 £57.85
UK excluding London median hourly rate £51.12 £40.75 £42.25
% change year-on-year +25.45% -3.55% -4.52%

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 3 July 2022.

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
Hourly Rate Histogram

Hourly rate distribution of jobs citing Kotlin over the 6 months to 3 July 2022.

Hourly rate histogram for Kotlin in the UK

Kotlin
Top 15 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 3 July 2022. 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
Jobs
England -162 447 £590 +12.38% 183
Work from Home -97 337 £600 +14.29% 97
London -151 330 £605 +15.24% 120
UK excluding London -55 82 £550 +18.28% 76
North of England -40 46 £563 +23.63% 28
North West -21 27 £625 +40.06% 14
Yorkshire -39 18 £500 +7.53% 11
South East -31 11 £550 +10.00% 10
Midlands -27 9 £500 +23.08% 7
West Midlands -30 9 £500 +37.93% 6
Scotland -10 6 £538 +26.47% 9
Wales -9 4 £550 +18.92% 3
East of England -23 4 £570 +14.00% 4
South West -25 3 £550 +17.02% 13
North East -9 1 - - 3

For the 6 months to 3 July 2022, 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.

1 377 (73.35%) Java
2 252 (49.03%) Android
3 214 (41.63%) Android Development
4 195 (37.94%) Agile
5 182 (35.41%) TDD
6 148 (28.79%) CI/CD
7 116 (22.57%) Spring
8 97 (18.87%) REST
9 94 (18.29%) Jenkins
10 89 (17.32%) RxJava
11 88 (17.12%) AWS
12 87 (16.93%) Spring Boot
13 85 (16.54%) Mobile App
14 82 (15.95%) Kubernetes
15 81 (15.76%) GitHub
16 79 (15.37%) DevOps
16 79 (15.37%) Docker
16 79 (15.37%) Test Automation
16 79 (15.37%) Software Engineering
17 77 (14.98%) Git (software)
18 74 (14.40%) Finance
18 74 (14.40%) MVVM
19 72 (14.01%) Microservices
20 69 (13.42%) React
20 69 (13.42%) Apple iOS
21 68 (13.23%) GCP
22 67 (13.04%) Fintech
22 67 (13.04%) Scrum
22 67 (13.04%) Banking
23 65 (12.65%) Social Skills

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 50 (9.73%) Confluence
2 31 (6.03%) Cloud Foundry
3 9 (1.75%) Mule
4 7 (1.36%) CMS
4 7 (1.36%) Sitecore CMS
5 6 (1.17%) Apache Spark
6 3 (0.58%) Anypoint
7 2 (0.39%) Apache
7 2 (0.39%) Apache Airflow
8 1 (0.19%) OpenStack
8 1 (0.19%) SharePoint
8 1 (0.19%) WebLogic
8 1 (0.19%) WebSphere
Business Applications
1 3 (0.58%) Distributed Ledger
1 3 (0.58%) SAP Hybris
2 2 (0.39%) Magento
2 2 (0.39%) Shopify
3 1 (0.19%) Oracle ERP
3 1 (0.19%) Payment Gateway
Cloud Services
1 88 (17.12%) AWS
2 81 (15.76%) GitHub
3 68 (13.23%) GCP
4 63 (12.26%) Azure
5 17 (3.31%) IaaS
6 15 (2.92%) Slack
7 14 (2.72%) Google Play
7 14 (2.72%) OpenShift
8 13 (2.53%) Firebase
8 13 (2.53%) Serverless
9 11 (2.14%) SaaS
10 9 (1.75%) PaaS
11 8 (1.56%) Azure DevOps
11 8 (1.56%) GitHub Actions
12 5 (0.97%) Bitrise
12 5 (0.97%) SAP Commerce Cloud
13 4 (0.78%) AWS Lambda
13 4 (0.78%) Cloud Functions
13 4 (0.78%) Google Analytics
14 3 (0.58%) Pulumi
Communications & Networking
1 18 (3.50%) HTTP
1 18 (3.50%) HTTPS
2 8 (1.56%) MQTT
3 3 (0.58%) Bluetooth
4 2 (0.39%) NFC
5 1 (0.19%) 2G
5 1 (0.19%) Kerberos
5 1 (0.19%) SMS
5 1 (0.19%) SSL
5 1 (0.19%) TCP/IP
Database & Business Intelligence
1 32 (6.23%) NoSQL
2 30 (5.84%) PostgreSQL
3 18 (3.50%) MongoDB
4 14 (2.72%) SQLite
5 11 (2.14%) Apache Cassandra
5 11 (2.14%) Redis
6 10 (1.95%) SQL Server
7 8 (1.56%) Hadoop
7 8 (1.56%) Relational Database
8 7 (1.36%) InfluxDB
9 6 (1.17%) BigQuery
10 4 (0.78%) Big Data
10 4 (0.78%) Flink
11 2 (0.39%) Amazon RDS
11 2 (0.39%) Amazon Redshift
11 2 (0.39%) Azkaban
11 2 (0.39%) Data Warehouse
11 2 (0.39%) DynamoDB
11 2 (0.39%) Elasticsearch
11 2 (0.39%) MySQL
Development Applications
1 94 (18.29%) Jenkins
2 77 (14.98%) Git (software)
3 59 (11.48%) JIRA
4 58 (11.28%) JUnit
5 50 (9.73%) Android Studio
6 49 (9.53%) Gradle
7 43 (8.37%) Maven
8 24 (4.67%) Mockito
9 17 (3.31%) SonarQube
10 16 (3.11%) Sonatype Nexus
11 15 (2.92%) IntelliJ
12 14 (2.72%) Xcode
13 11 (2.14%) GitLab
13 11 (2.14%) Postman
14 10 (1.95%) CircleCI
14 10 (1.95%) CocoaPods
15 7 (1.36%) Atlassian Bamboo
15 7 (1.36%) Bitbucket
15 7 (1.36%) Cucumber
15 7 (1.36%) TeamCity
General
1 74 (14.40%) Finance
2 67 (13.04%) Banking
3 65 (12.65%) Social Skills
4 32 (6.23%) Retail
5 25 (4.86%) Games
6 20 (3.89%) Publishing
7 19 (3.70%) Public Sector
8 17 (3.31%) Manufacturing
9 15 (2.92%) Telecoms
10 13 (2.53%) Automotive
11 9 (1.75%) Analytical Skills
11 9 (1.75%) Marketing
12 8 (1.56%) Electronics
13 7 (1.36%) Investment Banking
14 6 (1.17%) Financial Institution
15 4 (0.78%) Inclusion and Diversity
16 3 (0.58%) Back Office
16 3 (0.58%) Influencing Skills
16 3 (0.58%) Legal
16 3 (0.58%) Prime Brokerage
Job Titles
1 394 (76.65%) Developer
2 176 (34.24%) Android Developer
3 109 (21.21%) Java Developer
4 105 (20.43%) Senior Developer
5 48 (9.34%) Senior Java Developer
6 40 (7.78%) Senior Android Developer
7 29 (5.64%) Full Stack Developer
8 28 (5.45%) Android Engineer
8 28 (5.45%) Software Engineer
9 24 (4.67%) Java Engineer
10 16 (3.11%) AWS Engineer
11 15 (2.92%) Backend Developer
11 15 (2.92%) Lead Developer
12 14 (2.72%) Java Software Engineer
12 14 (2.72%) React Developer
13 13 (2.53%) Lead Android Developer
14 12 (2.33%) Java Software Developer
15 11 (2.14%) Mobile Engineer
15 11 (2.14%) Software Developer
16 10 (1.95%) Developer/Software Engineer
Libraries, Frameworks & Software Standards
1 116 (22.57%) Spring
2 97 (18.87%) REST
3 89 (17.32%) RxJava
4 87 (16.93%) Spring Boot
5 69 (13.42%) React
6 57 (11.09%) Android SDK
7 50 (9.73%) Dagger
8 49 (9.53%) Kafka
9 40 (7.78%) JSON
10 39 (7.59%) CSS
11 38 (7.39%) HTML
11 38 (7.39%) Node.js
12 36 (7.00%) Retrofit
13 35 (6.81%) Android Jetpack
14 33 (6.42%) AngularJS
15 27 (5.25%) RESTful
16 24 (4.67%) Web Services
17 23 (4.47%) HTML5
18 19 (3.70%) iOS SDK
18 19 (3.70%) Material Design
Miscellaneous
1 85 (16.54%) Mobile App
2 40 (7.78%) Cloud Native
3 37 (7.20%) Greenfield Project
4 36 (7.00%) User Experience
5 28 (5.45%) Data Protection Act
6 11 (2.14%) IoT
7 10 (1.95%) Legacy Systems
7 10 (1.95%) Mobile Banking
8 8 (1.56%) Data Structures
8 8 (1.56%) Self-Motivation
9 7 (1.36%) Blockchain
10 6 (1.17%) Algorithms
10 6 (1.17%) Public Cloud
11 5 (0.97%) Derivative
11 5 (0.97%) Renewable Energy
12 4 (0.78%) Enterprise Software
12 4 (0.78%) Virtual Team
13 3 (0.58%) Data Centre
13 3 (0.58%) iPad
13 3 (0.58%) Video on Demand
Operating Systems
1 252 (49.03%) Android
2 69 (13.42%) Apple iOS
3 16 (3.11%) Linux
4 6 (1.17%) Windows
5 4 (0.78%) Unix
6 3 (0.58%) Alpine Linux
6 3 (0.58%) CentOS
7 1 (0.19%) Android TV
7 1 (0.19%) Mac OS
Processes & Methodologies
1 214 (41.63%) Android Development
2 195 (37.94%) Agile
3 182 (35.41%) TDD
4 148 (28.79%) CI/CD
5 79 (15.37%) DevOps
5 79 (15.37%) Software Engineering
5 79 (15.37%) Test Automation
6 74 (14.40%) MVVM
7 72 (14.01%) Microservices
8 67 (13.04%) Fintech
8 67 (13.04%) Scrum
9 64 (12.45%) Full Stack Development
10 60 (11.67%) Continuous Integration
11 47 (9.14%) Data Protection
12 43 (8.37%) Computer Science
13 42 (8.17%) BDD
13 42 (8.17%) Unit Testing
14 41 (7.98%) Kanban
14 41 (7.98%) Pair Programming
15 34 (6.61%) Continuous Delivery
Programming Languages
1 377 (73.35%) Java
2 61 (11.87%) JavaScript
2 61 (11.87%) Python
3 49 (9.53%) TypeScript
4 45 (8.75%) SQL
5 41 (7.98%) Apple Swift
6 23 (4.47%) Go
7 17 (3.31%) Scala
8 14 (2.72%) C#
8 14 (2.72%) Groovy
8 14 (2.72%) Objective-C
9 12 (2.33%) C++
10 9 (1.75%) Ruby
11 8 (1.56%) C
12 7 (1.36%) Dart
12 7 (1.36%) Shell Script
13 6 (1.17%) Bash
13 6 (1.17%) ES7
14 3 (0.58%) PowerShell
15 2 (0.39%) SPARQL
Qualifications
1 35 (6.81%) Degree
2 12 (2.33%) Computer Science Degree
3 5 (0.97%) Security Cleared
4 3 (0.58%) SC Cleared
5 2 (0.39%) AWS Certification
5 2 (0.39%) CEH
5 2 (0.39%) CISSP
5 2 (0.39%) CREST Certified
5 2 (0.39%) OSCP
5 2 (0.39%) SANS
6 1 (0.19%) CISA
6 1 (0.19%) GIAC
6 1 (0.19%) GPEN
6 1 (0.19%) Numerate Degree
Quality Assurance & Compliance
1 17 (3.31%) Accessibility
2 14 (2.72%) QA
3 2 (0.39%) Data Quality
3 2 (0.39%) GDPR
4 1 (0.19%) PCI DSS
4 1 (0.19%) WCAG
System Software
1 79 (15.37%) Docker
2 1 (0.19%) HDFS
Systems Management
1 82 (15.95%) Kubernetes
2 23 (4.47%) Terraform
3 14 (2.72%) Ansible
4 10 (1.95%) Puppet
5 7 (1.36%) Prometheus
6 6 (1.17%) Grafana
7 5 (0.97%) Kibana
8 3 (0.58%) vRealize
9 1 (0.19%) Bugsnag
9 1 (0.19%) Hadoop YARN
9 1 (0.19%) Istio
9 1 (0.19%) Kustomize
9 1 (0.19%) Opscode Chef
9 1 (0.19%) Pingdom
Vendors
1 63 (12.26%) Google
2 17 (3.31%) AppDynamics
2 17 (3.31%) Microsoft
2 17 (3.31%) Splunk
3 14 (2.72%) SAP
4 10 (1.95%) CA
4 10 (1.95%) CA Agile Central
4 10 (1.95%) Oracle
5 7 (1.36%) Apple
5 7 (1.36%) Sitecore
6 3 (0.58%) MuleSoft
6 3 (0.58%) Salesforce.com
6 3 (0.58%) VMware
7 2 (0.39%) Adobe
7 2 (0.39%) Huawei
7 2 (0.39%) NN4M
8 1 (0.19%) Checkmarx
8 1 (0.19%) IBM
8 1 (0.19%) Spotify
8 1 (0.19%) TOWER Software