Period
to

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 12 August 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 > England
6 months to
12 Aug 2022
Same period 2021 Same period 2020
Rank 392 257 247
Rank change year-on-year -135 -10 +230
Contract jobs citing Kotlin 467 657 331
As % of all contract jobs advertised in England 0.64% 1.11% 1.08%
As % of the Programming Languages category 1.71% 2.76% 2.58%
Number of daily rates quoted 390 533 238
10th Percentile £463 £413 £404
25th Percentile £513 £461 £450
Median daily rate (50th Percentile) £580 £525 £525
Median % change year-on-year +10.48% - -2.33%
75th Percentile £675 £644 £629
90th Percentile £719 £700 £686
UK median daily rate £577 £525 £525
% change year-on-year +9.99% - -
Number of hourly rates quoted 9 9 4
10th Percentile £61.75 £55.00 £54.53
25th Percentile £69.50 - £57.56
Median hourly rate £73.60 £64.00 £61.75
Median % change year-on-year +14.99% +3.64% -35.00%
75th Percentile £77.50 £66.00 £65.19
90th Percentile £81.00 £68.69 £67.78
UK median hourly rate £73.60 £64.00 £61.75
% change year-on-year +14.99% +3.64% -35.00%

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 27,308 23,844 12,820
As % of all contract IT jobs advertised in England 37.57% 40.41% 41.88%
Number of daily rates quoted 20,166 17,183 9,145
10th Percentile £400 £350 £325
25th Percentile £463 £419 £410
Median daily rate (50th Percentile) £572 £525 £500
Median % change year-on-year +8.95% +5.00% +4.82%
75th Percentile £680 £625 £600
90th Percentile £775 £700 £694
UK median daily rate £550 £500 £500
% change year-on-year +10.00% - +5.26%
Number of hourly rates quoted 479 407 243
10th Percentile £20.25 £16.08 £15.30
25th Percentile £38.33 £24.44 £22.50
Median hourly rate £55.00 £42.81 £42.50
Median % change year-on-year +28.47% +0.73% -5.56%
75th Percentile £65.00 £55.00 £50.00
90th Percentile £75.00 £65.10 £59.60
UK median hourly rate £55.00 £42.50 £42.50
% change year-on-year +29.41% - -5.56%

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 12 August 2022.

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 12 August 2022.

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 12 August 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
London -130 343 £590 +7.27% 117
North of England -14 49 £575 +21.05% 29
North West -14 26 £638 +37.84% 21
Yorkshire -25 21 £500 +5.26% 5
South East -21 18 £590 +38.82% 18
Midlands -22 13 £525 +23.53% 7
West Midlands -17 10 £525 +27.27% 5
East of England -5 7 £650 +30.00% 5
East Midlands -1 3 £475 +5.56% 2
South West -20 3 - - 15
North East -8 2 £550 +29.41% 3
Kotlin
UK

For the 6 months to 12 August 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 across the England region with a requirement for Kotlin.

1 344 (73.66%) Java
2 229 (49.04%) Android
3 195 (41.76%) Android Development
4 188 (40.26%) TDD
5 165 (35.33%) Agile
6 138 (29.55%) CI/CD
7 107 (22.91%) Spring
8 97 (20.77%) Jenkins
9 90 (19.27%) Spring Boot
10 87 (18.63%) Mobile App
11 78 (16.70%) RxJava
11 78 (16.70%) REST
12 75 (16.06%) Apple iOS
12 75 (16.06%) Microservices
12 75 (16.06%) AWS
13 74 (15.85%) GitHub
14 70 (14.99%) Git (software)
14 70 (14.99%) Social Skills
15 67 (14.35%) Software Engineering
16 66 (14.13%) MVVM
17 64 (13.70%) Test Automation
18 62 (13.28%) DevOps
18 62 (13.28%) Fintech
19 61 (13.06%) React
20 60 (12.85%) Kubernetes
20 60 (12.85%) Docker
20 60 (12.85%) Kafka
20 60 (12.85%) Banking
21 59 (12.63%) Data Protection
21 59 (12.63%) Android SDK

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 46 (9.85%) Confluence
2 34 (7.28%) Cloud Foundry
3 10 (2.14%) Mule
4 7 (1.50%) CMS
4 7 (1.50%) Sitecore CMS
5 5 (1.07%) Apache Spark
6 3 (0.64%) Apache
6 3 (0.64%) Apache Airflow
7 2 (0.43%) WebLogic
7 2 (0.43%) WebSphere
8 1 (0.21%) Anypoint
8 1 (0.21%) SharePoint
Business Applications
1 3 (0.64%) Distributed Ledger
2 1 (0.21%) Magento
2 1 (0.21%) Oracle ERP
2 1 (0.21%) Shopify
Cloud Services
1 75 (16.06%) AWS
2 74 (15.85%) GitHub
3 48 (10.28%) Azure
4 47 (10.06%) GCP
5 16 (3.43%) Slack
6 14 (3.00%) Google Play
6 14 (3.00%) IaaS
7 11 (2.36%) OpenShift
8 10 (2.14%) PaaS
9 8 (1.71%) Serverless
10 6 (1.28%) Firebase
11 5 (1.07%) Azure DevOps
11 5 (1.07%) GitHub Actions
12 4 (0.86%) AWS CodePipeline
12 4 (0.86%) Bitrise
12 4 (0.86%) SaaS
13 3 (0.64%) AWS Lambda
13 3 (0.64%) Azure Data Factory
13 3 (0.64%) Google Analytics
13 3 (0.64%) Google Pay
Communications & Networking
1 20 (4.28%) HTTPS
2 10 (2.14%) HTTP
3 1 (0.21%) Bluetooth
3 1 (0.21%) DHCP
3 1 (0.21%) DNS
3 1 (0.21%) Firewall
3 1 (0.21%) Kerberos
3 1 (0.21%) Multicast
3 1 (0.21%) SSL
3 1 (0.21%) TCP/IP
Database & Business Intelligence
1 34 (7.28%) PostgreSQL
2 27 (5.78%) NoSQL
3 9 (1.93%) SQLite
4 8 (1.71%) Big Data
5 7 (1.50%) MongoDB
6 6 (1.28%) Elasticsearch
7 5 (1.07%) Redis
8 4 (0.86%) Flink
8 4 (0.86%) Relational Database
8 4 (0.86%) SQL Server
9 3 (0.64%) Amazon Redshift
9 3 (0.64%) Azkaban
9 3 (0.64%) BigQuery
9 3 (0.64%) Data Lake
9 3 (0.64%) Data Warehouse
9 3 (0.64%) DynamoDB
10 2 (0.43%) Amazon RDS
10 2 (0.43%) Apache Cassandra
11 1 (0.21%) Hazelcast
11 1 (0.21%) HBase
Development Applications
1 97 (20.77%) Jenkins
2 70 (14.99%) Git (software)
3 53 (11.35%) JIRA
4 50 (10.71%) Android Studio
4 50 (10.71%) JUnit
5 41 (8.78%) Gradle
6 35 (7.49%) Maven
7 26 (5.57%) Mockito
8 21 (4.50%) IntelliJ
9 17 (3.64%) Sonatype Nexus
10 16 (3.43%) SonarQube
11 15 (3.21%) Postman
12 14 (3.00%) Xcode
13 12 (2.57%) GitLab
14 11 (2.36%) CocoaPods
15 7 (1.50%) Bitbucket
15 7 (1.50%) CircleCI
16 5 (1.07%) Atlassian Bamboo
16 5 (1.07%) Cucumber
16 5 (1.07%) TeamCity
General
1 70 (14.99%) Social Skills
2 60 (12.85%) Banking
3 57 (12.21%) Finance
4 25 (5.35%) Publishing
5 23 (4.93%) Games
5 23 (4.93%) Retail
6 17 (3.64%) Automotive
7 13 (2.78%) Public Sector
8 8 (1.71%) Manufacturing
9 7 (1.50%) Investment Banking
10 6 (1.28%) Financial Institution
10 6 (1.28%) Inclusion and Diversity
11 5 (1.07%) Analytical Skills
11 5 (1.07%) Marketing
11 5 (1.07%) Telecoms
12 4 (0.86%) Prime Brokerage
13 3 (0.64%) Legal
13 3 (0.64%) Presentation Skills
13 3 (0.64%) Wearables
14 2 (0.43%) Influencing Skills
Job Titles
1 353 (75.59%) Developer
2 161 (34.48%) Android Developer
3 105 (22.48%) Java Developer
4 101 (21.63%) Senior Developer
5 54 (11.56%) Senior Java Developer
6 36 (7.71%) Senior Android Developer
7 30 (6.42%) Java Engineer
7 30 (6.42%) Software Engineer
8 25 (5.35%) Full Stack Developer
9 19 (4.07%) Android Engineer
10 18 (3.85%) Lead Developer
11 17 (3.64%) Java Software Engineer
11 17 (3.64%) Lead Android Developer
12 13 (2.78%) AWS Engineer
13 12 (2.57%) React Developer
13 12 (2.57%) Senior Java Engineer
14 11 (2.36%) Java Software Developer
14 11 (2.36%) Software Developer
15 10 (2.14%) AWS Developer
15 10 (2.14%) Developer/Software Engineer
Libraries, Frameworks & Software Standards
1 107 (22.91%) Spring
2 90 (19.27%) Spring Boot
3 78 (16.70%) REST
3 78 (16.70%) RxJava
4 61 (13.06%) React
5 60 (12.85%) Kafka
6 59 (12.63%) Android SDK
7 43 (9.21%) Dagger
8 36 (7.71%) Node.js
9 35 (7.49%) JSON
10 30 (6.42%) iOS SDK
11 28 (6.00%) RESTful
12 27 (5.78%) AngularJS
13 26 (5.57%) CSS
13 26 (5.57%) HTML
13 26 (5.57%) Retrofit
14 25 (5.35%) Web Services
15 21 (4.50%) Android Jetpack
16 20 (4.28%) Material Design
17 19 (4.07%) Swagger
Miscellaneous
1 87 (18.63%) Mobile App
2 38 (8.14%) Data Protection Act
3 34 (7.28%) Greenfield Project
4 27 (5.78%) Cloud Native
5 26 (5.57%) User Experience
6 9 (1.93%) Data Structures
7 8 (1.71%) Blockchain
7 8 (1.71%) Mobile Banking
8 7 (1.50%) Legacy Systems
8 7 (1.50%) Self-Motivation
9 5 (1.07%) Renewable Energy
9 5 (1.07%) Virtual Team
10 4 (0.86%) Algorithms
10 4 (0.86%) Public Cloud
11 3 (0.64%) Data Centre
11 3 (0.64%) Legacy Code
11 3 (0.64%) Video on Demand
12 2 (0.43%) Hedge funds
12 2 (0.43%) Mobile Payment
12 2 (0.43%) YARA
Operating Systems
1 229 (49.04%) Android
2 75 (16.06%) Apple iOS
3 14 (3.00%) Linux
4 6 (1.28%) Windows
5 4 (0.86%) Unix
6 1 (0.21%) Android TV
6 1 (0.21%) Mac OS
Processes & Methodologies
1 195 (41.76%) Android Development
2 188 (40.26%) TDD
3 165 (35.33%) Agile
4 138 (29.55%) CI/CD
5 75 (16.06%) Microservices
6 67 (14.35%) Software Engineering
7 66 (14.13%) MVVM
8 64 (13.70%) Test Automation
9 62 (13.28%) DevOps
9 62 (13.28%) Fintech
10 59 (12.63%) Data Protection
11 58 (12.42%) Scrum
12 55 (11.78%) Full Stack Development
13 52 (11.13%) Pair Programming
14 51 (10.92%) Continuous Integration
15 42 (8.99%) Computer Science
16 35 (7.49%) BDD
16 35 (7.49%) Kanban
17 34 (7.28%) Unit Testing
18 27 (5.78%) Continuous Delivery
Programming Languages
1 344 (73.66%) Java
2 49 (10.49%) Python
3 46 (9.85%) JavaScript
4 38 (8.14%) Apple Swift
5 36 (7.71%) SQL
6 27 (5.78%) TypeScript
7 16 (3.43%) C#
8 15 (3.21%) Objective-C
9 14 (3.00%) C
9 14 (3.00%) Go
10 12 (2.57%) Scala
11 11 (2.36%) C++
12 8 (1.71%) Bash
13 5 (1.07%) Ruby
14 4 (0.86%) ES7
14 4 (0.86%) Groovy
14 4 (0.86%) Shell Script
15 3 (0.64%) PowerShell
16 2 (0.43%) Dart
16 2 (0.43%) Rust
Qualifications
1 39 (8.35%) Degree
2 11 (2.36%) Computer Science Degree
3 5 (1.07%) Security Cleared
4 3 (0.64%) SC Cleared
5 2 (0.43%) AWS Certification
5 2 (0.43%) CEH
5 2 (0.43%) CISSP
5 2 (0.43%) CREST Certified
5 2 (0.43%) OSCP
5 2 (0.43%) SANS
6 1 (0.21%) BPSS Clearance
6 1 (0.21%) CISA
6 1 (0.21%) GIAC
6 1 (0.21%) GPEN
6 1 (0.21%) Numerate Degree
Quality Assurance & Compliance
1 13 (2.78%) Accessibility
2 12 (2.57%) QA
3 3 (0.64%) GDPR
4 1 (0.21%) Data Quality
4 1 (0.21%) PMO
4 1 (0.21%) SEPA
4 1 (0.21%) WCAG
System Software
1 60 (12.85%) Docker
Systems Management
1 60 (12.85%) Kubernetes
2 19 (4.07%) Terraform
3 9 (1.93%) Ansible
4 8 (1.71%) Puppet
5 3 (0.64%) vRealize
6 2 (0.43%) Grafana
6 2 (0.43%) Kibana
6 2 (0.43%) Prometheus
7 1 (0.21%) Bugsnag
7 1 (0.21%) Kustomize
7 1 (0.21%) Opscode Chef
7 1 (0.21%) Pingdom
Vendors
1 42 (8.99%) Google
2 17 (3.64%) Microsoft
3 16 (3.43%) AppDynamics
3 16 (3.43%) Splunk
4 11 (2.36%) CA
4 11 (2.36%) CA Agile Central
5 7 (1.50%) Oracle
5 7 (1.50%) Sitecore
6 6 (1.28%) Apple
7 3 (0.64%) Huawei
7 3 (0.64%) VMware
8 2 (0.43%) IBM
8 2 (0.43%) Salesforce.com
8 2 (0.43%) SAP
9 1 (0.21%) Adobe
9 1 (0.21%) Ingenico
9 1 (0.21%) MuleSoft
9 1 (0.21%) Netsparker
9 1 (0.21%) PagerDuty
9 1 (0.21%) TOWER Software