Period
to 30 July 2021

The following table provides summary statistics for permanent job vacancies with a requirement for Kotlin skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Kotlin over the 6 months to 30 July 2021 with a comparison to the same period in the previous 2 years.

JetBrains Kotlin
UK
6 months to
30 Jul 2021
Same period 2020 Same period 2019
Rank 235 252 467
Rank change year-on-year +17 +215 +211
Permanent jobs citing Kotlin 1,692 876 924
As % of all permanent jobs advertised in the UK 1.49% 1.28% 0.64%
As % of the Programming Languages category 2.71% 2.27% 1.20%
Number of salaries quoted 959 777 750
10th Percentile £50,000 £42,500 £41,250
25th Percentile £55,000 £48,750 £48,750
Median annual salary (50th Percentile) £75,000 £65,000 £62,976
Median % change year-on-year +15.38% +3.21% -3.11%
75th Percentile £95,000 £85,000 £80,000
90th Percentile £115,000 £116,750 £95,000
UK excluding London median annual salary £57,500 £55,000 £52,500
% change year-on-year +4.55% +4.76% -4.55%

Kotlin is in the Programming Languages category. The following table is for comparison with the above and provides summary statistics for all permanent job vacancies with a requirement for coding skills.

All Programming Languages
UK
Permanent vacancies with a requirement for coding skills 62,465 38,629 77,273
As % of all permanent IT jobs advertised in the UK 54.99% 56.31% 53.68%
Number of salaries quoted 43,046 32,068 63,983
10th Percentile £35,000 £32,500 £31,250
25th Percentile £42,500 £41,250 £37,750
Median annual salary (50th Percentile) £57,500 £55,000 £52,500
Median % change year-on-year +4.55% +4.76% +5.00%
75th Percentile £76,250 £73,750 £70,000
90th Percentile £93,750 £90,000 £85,000
UK excluding London median annual salary £50,000 £47,500 £45,000
% change year-on-year +5.26% +5.56% -

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
Salary Trend

3-month moving average salary quoted in jobs citing Kotlin.

Salary trend for Kotlin in the UK

Kotlin
Salary Histogram

Salary distribution for jobs citing Kotlin over the 6 months to 30 July 2021.

Salary histogram for Kotlin in the UK

Kotlin
Top 16 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Kotlin within the UK over the 6 months to 30 July 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +36 1,615 £75,000 +11.11% 252
London +34 1,085 £85,000 +13.33% 171
UK excluding London -2 533 £57,500 +4.55% 87
Work from Home -103 425 £85,000 +41.67% 71
North of England +64 224 £57,500 +15.00% 23
Yorkshire +12 137 £57,500 +15.00% 6
South East -114 113 £62,500 +8.70% 26
North West +21 82 £57,500 +15.00% 17
South West -25 70 £50,000 +5.26% 9
Midlands -34 52 £60,000 +41.18% 11
East of England -9 42 £58,750 -2.08% 12
West Midlands -47 36 £60,250 +26.84% 6
Scotland -107 24 £55,000 - 4
East Midlands -39 15 £60,000 +41.18% 5
Wales -27 10 £57,000 +8.57% 2
North East - 5 £60,250 -

For the 6 months to 30 July 2021, IT 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 permanent job ads with a requirement for Kotlin.

1 1,309 (77.36%) Java
2 902 (53.31%) Agile Software Development
3 774 (45.74%) Software Engineering
4 649 (38.36%) AWS
5 644 (38.06%) React
6 597 (35.28%) Android
7 581 (34.34%) JavaScript
8 534 (31.56%) Kubernetes
9 522 (30.85%) Docker
10 479 (28.31%) Finance
11 477 (28.19%) Python
12 454 (26.83%) TDD
13 437 (25.83%) TypeScript
14 412 (24.35%) Microservices
15 394 (23.29%) Scala
16 388 (22.93%) DevOps
17 365 (21.57%) Android Development
18 357 (21.10%) Azure
19 354 (20.92%) Full Stack Development
20 346 (20.45%) GCP
21 329 (19.44%) Spring
22 315 (18.62%) Mobile App
23 308 (18.20%) AngularJS
24 288 (17.02%) Node.js
25 283 (16.73%) Social Skills
26 273 (16.13%) Git (software)
27 269 (15.90%) Apple iOS
28 268 (15.84%) Mobile Development
29 259 (15.31%) C#
30 254 (15.01%) SQL

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
1 105 (6.21%) Apache
2 41 (2.42%) Confluence
3 26 (1.54%) Apache Pulsar
4 25 (1.48%) Apache Airflow
4 25 (1.48%) Apache Spark
5 21 (1.24%) nginx
6 19 (1.12%) Elasticsearch
7 17 (1.00%) Gunicorn
8 6 (0.35%) CMS
9 3 (0.18%) Ethereum
10 2 (0.12%) Headless CMS
10 2 (0.12%) SAS
11 1 (0.059%) OpenStack
11 1 (0.059%) Oracle SOA Suite
Applications
1 50 (2.96%) Sketch
2 38 (2.25%) InVision
3 19 (1.12%) Figma
4 6 (0.35%) Adobe XD
5 3 (0.18%) Photoshop
6 2 (0.12%) Adobe Creative Suite
6 2 (0.12%) Adobe Illustrator
Business Applications
1 43 (2.54%) Distributed Ledger
2 42 (2.48%) R3 Corda
3 2 (0.12%) Oracle Receivables
3 2 (0.12%) SDL Web 8
4 1 (0.059%) Dynamics NAV
4 1 (0.059%) Sentinel
Cloud Services
1 649 (38.36%) AWS
2 357 (21.10%) Azure
3 346 (20.45%) GCP
4 158 (9.34%) Serverless
5 136 (8.04%) AWS Lambda
6 116 (6.86%) Amazon EC2
7 113 (6.68%) Amazon S3
7 113 (6.68%) AWS CloudFormation
8 105 (6.21%) SaaS
9 63 (3.72%) GitHub
10 52 (3.07%) Firebase
11 49 (2.90%) Google Play
12 33 (1.95%) Bitrise
13 24 (1.42%) Cloud Computing
14 20 (1.18%) PaaS
15 15 (0.89%) Amazon SQS
16 9 (0.53%) Amazon EKS
16 9 (0.53%) Google Analytics
16 9 (0.53%) npm
17 7 (0.41%) Datadog
Communications & Networking
1 52 (3.07%) HTTP
2 18 (1.06%) Broadband
3 12 (0.71%) SSL
4 10 (0.59%) Internet
5 9 (0.53%) RIP
6 4 (0.24%) FIX Connectivity
7 3 (0.18%) 5G
7 3 (0.18%) Firewall
7 3 (0.18%) Network Security
7 3 (0.18%) VoIP
8 2 (0.12%) DHCP
8 2 (0.12%) DNS
8 2 (0.12%) Multicast
9 1 (0.059%) DAB
9 1 (0.059%) HTTPS
9 1 (0.059%) TCP/IP
9 1 (0.059%) Wi-Fi
Database & Business Intelligence
1 166 (9.81%) PostgreSQL
2 149 (8.81%) NoSQL
3 129 (7.62%) Amazon DynamoDB
4 106 (6.26%) MongoDB
5 77 (4.55%) Apache Ignite
6 74 (4.37%) Redis
7 71 (4.20%) MySQL
8 55 (3.25%) Blockchain
9 42 (2.48%) Relational Database
10 39 (2.30%) SQL Server
11 30 (1.77%) Amazon RDS
12 29 (1.71%) Apache Cassandra
13 24 (1.42%) Data Warehouse
14 23 (1.36%) Hadoop
15 21 (1.24%) Big Data
15 21 (1.24%) RDBMS
16 20 (1.18%) Amazon Aurora
17 17 (1.00%) Apache Hive
18 15 (0.89%) Data Lake
19 14 (0.83%) Amazon Athena
Development Applications
1 273 (16.13%) Git (software)
2 141 (8.33%) Jenkins
3 94 (5.56%) JIRA
4 75 (4.43%) Gradle
5 53 (3.13%) webpack
6 51 (3.01%) GitLab
7 44 (2.60%) Bitbucket
8 43 (2.54%) Babel
9 37 (2.19%) git-flow
10 36 (2.13%) Maven
11 35 (2.07%) CircleCI
11 35 (2.07%) Mockito
12 32 (1.89%) Selenium
13 31 (1.83%) Cypress.io
13 31 (1.83%) SonarQube
14 30 (1.77%) JUnit
14 30 (1.77%) Mercurial
15 25 (1.48%) Android Studio
16 24 (1.42%) PostCSS
17 22 (1.30%) Appium
General
1 479 (28.31%) Finance
2 283 (16.73%) Social Skills
3 151 (8.92%) Front Office
4 146 (8.63%) Banking
5 74 (4.37%) Games
6 68 (4.02%) Retail
7 51 (3.01%) Analytical Skills
8 32 (1.89%) Billing
8 32 (1.89%) Inclusion and Diversity
9 31 (1.83%) Retail Banking
10 25 (1.48%) Advertising
10 25 (1.48%) Manufacturing
10 25 (1.48%) Presentation Skills
11 20 (1.18%) Automotive
12 17 (1.00%) Publishing
13 15 (0.89%) Financial Institution
13 15 (0.89%) Russian Language
14 14 (0.83%) Marketing
15 13 (0.77%) Back Office
15 13 (0.77%) Electronics
Job Titles
1 906 (53.55%) Developer
2 522 (30.85%) Software Engineer
3 283 (16.73%) Android Developer
4 222 (13.12%) Java Developer
5 176 (10.40%) Senior Developer
6 134 (7.92%) Senior Software Engineer
7 127 (7.51%) React Developer
8 101 (5.97%) Android Engineer
9 89 (5.26%) Developer/Software Engineer
9 89 (5.26%) Lead Developer
10 84 (4.96%) Python Developer
11 79 (4.67%) Java Engineer
12 77 (4.55%) Mobile Developer
12 77 (4.55%) Python Engineer
12 77 (4.55%) Python Software Engineer
13 68 (4.02%) Senior Android Developer
14 65 (3.84%) Senior Java Developer
15 64 (3.78%) Full Stack Developer
16 58 (3.43%) Java Software Engineer
16 58 (3.43%) JavaScript Developer
Libraries, Frameworks & Software Standards
1 644 (38.06%) React
2 329 (19.44%) Spring
3 308 (18.20%) AngularJS
4 288 (17.02%) Node.js
5 254 (15.01%) Spring Boot
6 238 (14.07%) Kafka
7 222 (13.12%) Vue.js
8 220 (13.00%) REST
9 172 (10.17%) GraphQL
10 166 (9.81%) RESTful
11 142 (8.39%) CSS
11 142 (8.39%) Web Services
12 140 (8.27%) HTML
13 130 (7.68%) React Native
14 112 (6.62%) Redux
15 76 (4.49%) HTML5
16 67 (3.96%) Flutter
17 59 (3.49%) Android SDK
18 54 (3.19%) Android Jetpack
19 50 (2.96%) RxJava
Miscellaneous
1 315 (18.62%) Mobile App
2 188 (11.11%) User Experience
3 169 (9.99%) Equities
4 158 (9.34%) Fixed Income
4 158 (9.34%) Foreign Exchange (FX)
5 149 (8.81%) Derivative
6 130 (7.68%) Hedge funds
7 73 (4.31%) Credit Risk
8 69 (4.08%) Enterprise Software
9 64 (3.78%) Greenfield Project
10 52 (3.07%) Data Structures
11 51 (3.01%) iPad
12 49 (2.90%) Virtual Team
13 46 (2.72%) Algorithms
14 32 (1.89%) Blog
15 30 (1.77%) Cloud Native
15 30 (1.77%) Self-Motivation
16 22 (1.30%) BBC
16 22 (1.30%) Legacy Applications
17 20 (1.18%) Legacy Code
Operating Systems
1 597 (35.28%) Android
2 269 (15.90%) Apple iOS
3 100 (5.91%) Linux
4 46 (2.72%) Unix
5 14 (0.83%) Windows
6 4 (0.24%) CentOS
7 2 (0.12%) Mac OS
Processes & Methodologies
1 902 (53.31%) Agile Software Development
2 774 (45.74%) Software Engineering
3 454 (26.83%) TDD
4 412 (24.35%) Microservices
5 388 (22.93%) DevOps
6 365 (21.57%) Android Development
7 354 (20.92%) Full Stack Development
8 268 (15.84%) Mobile Development
9 225 (13.30%) Fintech
10 218 (12.88%) Continuous Integration
11 206 (12.17%) Unit Testing
12 193 (11.41%) Test Automation
13 182 (10.76%) Problem-Solving
14 174 (10.28%) Mentoring
15 165 (9.75%) Computer Science
15 165 (9.75%) SOLID
16 164 (9.69%) Pair Programming
17 151 (8.92%) OOP
18 144 (8.51%) Asset Management
19 139 (8.22%) Analytics
Programming Languages
1 1,309 (77.36%) Java
2 581 (34.34%) JavaScript
3 477 (28.19%) Python
4 437 (25.83%) TypeScript
5 394 (23.29%) Scala
6 259 (15.31%) C#
7 254 (15.01%) SQL
8 224 (13.24%) C++
9 203 (12.00%) Apple Swift
10 140 (8.27%) Go
11 123 (7.27%) Clojure
12 100 (5.91%) Ruby
13 68 (4.02%) Java 8
13 68 (4.02%) PHP
14 66 (3.90%) Java 11
15 58 (3.43%) Objective-C
16 54 (3.19%) ES6
17 41 (2.42%) Groovy
18 37 (2.19%) Dart
19 33 (1.95%) ES7
Qualifications
1 142 (8.39%) Degree
2 95 (5.61%) Computer Science Degree
3 24 (1.42%) SANS
4 14 (0.83%) Security Cleared
5 13 (0.77%) SC Cleared
6 5 (0.30%) DBS Check
7 4 (0.24%) AWS Certification
7 4 (0.24%) Master's Degree
7 4 (0.24%) PhD
8 2 (0.12%) BPSS Clearance
9 1 (0.059%) DV Cleared
9 1 (0.059%) MBA
9 1 (0.059%) Postgraduate
Quality Assurance & Compliance
1 103 (6.09%) QA
2 32 (1.89%) Accessibility
3 26 (1.54%) WCAG
4 20 (1.18%) GRC
5 4 (0.24%) GDPR
5 4 (0.24%) HIPAA
5 4 (0.24%) ISO/IEC 27001
5 4 (0.24%) SOC 2
6 2 (0.12%) Data Quality
System Software
1 522 (30.85%) Docker
2 11 (0.65%) ISA Server
Systems Management
1 534 (31.56%) Kubernetes
2 203 (12.00%) Terraform
3 51 (3.01%) Prometheus
4 46 (2.72%) Opscode Chef
5 37 (2.19%) Grafana
6 28 (1.65%) Graphite
7 27 (1.60%) Puppet
8 11 (0.65%) Mesos
9 9 (0.53%) Istio
10 8 (0.47%) Ansible
11 5 (0.30%) linkerd
12 4 (0.24%) Rancher
12 4 (0.24%) ZABBIX
13 3 (0.18%) Kibana
14 2 (0.12%) logstash
15 1 (0.059%) Zipkin
Vendors
1 200 (11.82%) Google
2 48 (2.84%) Oracle
3 29 (1.71%) Salesforce.com
4 25 (1.48%) Apple
5 19 (1.12%) Microsoft
6 15 (0.89%) Splunk
7 13 (0.77%) Xamarin
8 9 (0.53%) Atlassian
8 9 (0.53%) SAP
9 8 (0.47%) Adobe
9 8 (0.47%) Intel
10 5 (0.30%) AppDynamics
11 4 (0.24%) Red Hat
11 4 (0.24%) YouTube
12 3 (0.18%) Facebook
12 3 (0.18%) Foundry
13 2 (0.12%) Samsung
13 2 (0.12%) Twitter
14 1 (0.059%) Databricks
14 1 (0.059%) New Relic