Period
to 24 July 2021

The following table provides summary statistics for contract job vacancies advertised in London 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 24 July 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
England > London
6 months to
24 Jul 2021
Same period 2020 Same period 2019
Rank 156 163 327
Rank change year-on-year +7 +164 +97
Contract jobs citing Kotlin 522 274 294
As % of all contract jobs advertised in London 1.75% 1.69% 0.72%
As % of the Programming Languages category 3.72% 3.37% 1.53%
Number of daily rates quoted 423 193 236
10th Percentile £425 £419 £418
25th Percentile £475 £475 £475
Median daily rate (50th Percentile) £550 £550 £550
75th Percentile £675 £638 £638
90th Percentile £700 £700 £719
England median daily rate £525 £525 £538
% change year-on-year - -2.33% +5.39%
Number of hourly rates quoted 6 6 0
Median hourly rate £64.00 £61.50 -
Median % change year-on-year +4.07% - -
England median hourly rate £64.00 £61.50 £78.65
% change year-on-year +4.07% -21.81% +214.60%

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 London with a requirement for coding skills.

All Programming Languages
London
Contract vacancies with a requirement for coding skills 14,014 8,127 19,265
As % of all contract IT jobs advertised in London 47.06% 50.07% 47.47%
Number of daily rates quoted 10,458 6,043 14,675
10th Percentile £388 £363 £363
25th Percentile £463 £441 £425
Median daily rate (50th Percentile) £550 £525 £525
Median % change year-on-year +4.76% - +2.44%
75th Percentile £650 £638 £613
90th Percentile £725 £725 £688
England median daily rate £514 £500 £480
% change year-on-year +2.80% +4.17% +1.05%
Number of hourly rates quoted 80 68 108
10th Percentile £20.94 £22.50 £16.50
25th Percentile £34.88 £31.69 £21.25
Median hourly rate £44.75 £46.46 £43.31
Median % change year-on-year -3.68% +7.28% +3.69%
75th Percentile £61.25 £58.13 £52.50
90th Percentile £68.41 £64.09 £56.50
England median hourly rate £42.50 £42.50 £45.00
% change year-on-year - -5.56% +8.43%

Kotlin
Job Vacancy Trend in London

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

Job vacancy trend for Kotlin in London

Kotlin
Contractor Daily Rate Trend in London

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

Daily rate trend for Kotlin in London

Kotlin
Daily Rate Histogram in London

Daily rate distribution for jobs citing Kotlin in London over the 6 months to 24 July 2021.

Daily rate histogram for Kotlin in London

Kotlin
Contractor Hourly Rate Trend in London

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

Hourly rate trend for Kotlin in London

Kotlin
Hourly Rate Histogram in London

Hourly rate distribution of jobs citing Kotlin in London over the 6 months to 24 July 2021.

Hourly rate histogram for Kotlin in London

Kotlin
Contract Job Locations in London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Kotlin within the London region over the 6 months to 24 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Central London -13 67 £605 +10.00% 69
East London +14 10 £480 +2.67% 24
West London +1 3 £650 +4.84% 19
South London - 2 £523 - 2
Kotlin
England

For the 6 months to 24 July 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 London region with a requirement for Kotlin.

1 396 (75.86%) Java
2 262 (50.19%) Agile Software Development
3 209 (40.04%) Software Engineering
4 189 (36.21%) JavaScript
5 183 (35.06%) Android
6 178 (34.10%) Finance
7 175 (33.52%) React
8 167 (31.99%) AWS
9 158 (30.27%) Android Development
10 137 (26.25%) Azure
11 130 (24.90%) Python
12 124 (23.75%) TDD
13 112 (21.46%) Front Office
14 109 (20.88%) Asset Management
14 109 (20.88%) Kubernetes
15 108 (20.69%) Spring
16 107 (20.50%) GCP
17 106 (20.31%) TypeScript
17 106 (20.31%) Web Services
18 101 (19.35%) Docker
19 98 (18.77%) Node.js
20 94 (18.01%) Microservices
21 91 (17.43%) Mobile App
22 88 (16.86%) Scala
23 83 (15.90%) Social Skills
24 82 (15.71%) User Experience
25 77 (14.75%) Investment Management
26 74 (14.18%) RESTful
26 74 (14.18%) Derivative
27 71 (13.60%) Foreign Exchange (FX)

Kotlin
Co-occurring IT Skills in London 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 18 (3.45%) Confluence
2 14 (2.68%) Apache Spark
3 12 (2.30%) Cloud Foundry
3 12 (2.30%) Tomcat
4 10 (1.92%) Apache
5 9 (1.72%) Apache Airflow
6 8 (1.53%) Elasticsearch
7 3 (0.57%) Ethereum
8 2 (0.38%) Hyperledger
8 2 (0.38%) Wowza Streaming Engine
9 1 (0.19%) Adobe Experience Manager
9 1 (0.19%) Apache Pig
9 1 (0.19%) CMS
9 1 (0.19%) IBM Domino
9 1 (0.19%) SharePoint
Applications
1 1 (0.19%) Photoshop
Business Applications
1 4 (0.77%) Distributed Ledger
2 3 (0.57%) Payment Gateway
3 2 (0.38%) Magento
3 2 (0.38%) R3 Corda
3 2 (0.38%) SAP Hybris
4 1 (0.19%) Oracle Cash Management
Cloud Services
1 167 (31.99%) AWS
2 137 (26.25%) Azure
3 107 (20.50%) GCP
4 43 (8.24%) Serverless
5 37 (7.09%) AWS Lambda
6 34 (6.51%) Amazon S3
7 33 (6.32%) Amazon EC2
8 29 (5.56%) GitHub
9 12 (2.30%) Firebase
10 11 (2.11%) OpenShift
11 6 (1.15%) SaaS
12 5 (0.96%) Google Play
12 5 (0.96%) Slack
13 4 (0.77%) Cloud Computing
13 4 (0.77%) Flurry Analytics
13 4 (0.77%) PubNub
14 3 (0.57%) Azure App Service
14 3 (0.57%) Bitrise
14 3 (0.57%) npm
15 2 (0.38%) Pulumi
Communications & Networking
1 12 (2.30%) HTTPS
2 11 (2.11%) HTTP
3 9 (1.72%) Internet
4 6 (1.15%) SSL
5 5 (0.96%) 2G
6 3 (0.57%) DNS
7 2 (0.38%) Bluetooth
7 2 (0.38%) RTMP
7 2 (0.38%) Wi-Fi
8 1 (0.19%) Broadband
8 1 (0.19%) DHCP
8 1 (0.19%) Firewall
8 1 (0.19%) Intranet
8 1 (0.19%) Multicast
8 1 (0.19%) NFC
Database & Business Intelligence
1 32 (6.13%) Amazon DynamoDB
2 21 (4.02%) Relational Database
3 15 (2.87%) SQL Server
4 14 (2.68%) PostgreSQL
5 13 (2.49%) Blockchain
6 11 (2.11%) Apache Hive
6 11 (2.11%) Big Data
6 11 (2.11%) NoSQL
6 11 (2.11%) SQLite
7 10 (1.92%) Data Warehouse
8 9 (1.72%) Amazon Athena
8 9 (1.72%) Apache Ignite
8 9 (1.72%) Azure SQL Data Warehouse
8 9 (1.72%) Parquet
9 8 (1.53%) MongoDB
10 5 (0.96%) MySQL
10 5 (0.96%) Tableau
11 4 (0.77%) Mixpanel
12 3 (0.57%) Hadoop
12 3 (0.57%) RDBMS
Development Applications
1 65 (12.45%) Jenkins
2 64 (12.26%) Git (software)
3 34 (6.51%) JUnit
4 33 (6.32%) JIRA
5 27 (5.17%) Maven
6 22 (4.21%) Android Studio
7 19 (3.64%) Mockito
8 17 (3.26%) Gradle
9 12 (2.30%) GitLab
10 11 (2.11%) Subversion
11 10 (1.92%) Atlassian Bamboo
11 10 (1.92%) IntelliJ
12 9 (1.72%) Calabash
12 9 (1.72%) Hudson
13 8 (1.53%) Postman
13 8 (1.53%) TeamCity
14 7 (1.34%) Cucumber
14 7 (1.34%) fastlane
15 6 (1.15%) Appium
15 6 (1.15%) git-flow
General
1 178 (34.10%) Finance
2 112 (21.46%) Front Office
3 83 (15.90%) Social Skills
4 47 (9.00%) Banking
5 21 (4.02%) Games
6 19 (3.64%) Analytical Skills
7 18 (3.45%) Manufacturing
8 14 (2.68%) Telecoms
9 13 (2.49%) Investment Banking
10 11 (2.11%) Automotive
11 9 (1.72%) Retail
12 7 (1.34%) Publishing
12 7 (1.34%) Retail Banking
13 6 (1.15%) Law
13 6 (1.15%) Marketing
14 5 (0.96%) Presentation Skills
14 5 (0.96%) Public Sector
14 5 (0.96%) Wearables
15 4 (0.77%) Electronics
16 3 (0.57%) Inclusion and Diversity
Job Titles
1 414 (79.31%) Developer
2 142 (27.20%) Android Developer
3 95 (18.20%) React Developer
4 83 (15.90%) Java Developer
5 69 (13.22%) Software Engineer
6 62 (11.88%) Senior Developer
7 50 (9.58%) UI Developer
8 49 (9.39%) Designer
8 49 (9.39%) UI Designer
8 49 (9.39%) UI Engineer
8 49 (9.39%) UI/UX Designer
8 49 (9.39%) UI/UX Developer
8 49 (9.39%) UX Designer
8 49 (9.39%) UX Developer
8 49 (9.39%) UX Engineer
9 37 (7.09%) Python Developer
10 35 (6.70%) Developer/Software Engineer
11 32 (6.13%) JavaScript Developer
11 32 (6.13%) Lead Developer
11 32 (6.13%) Python Software Engineer
Libraries, Frameworks & Software Standards
1 175 (33.52%) React
2 108 (20.69%) Spring
3 106 (20.31%) Web Services
4 98 (18.77%) Node.js
5 74 (14.18%) RESTful
6 64 (12.26%) REST
7 63 (12.07%) RxJava
8 62 (11.88%) AngularJS
9 61 (11.69%) GraphQL
10 60 (11.49%) Vue.js
11 54 (10.34%) Spring Boot
12 44 (8.43%) HTML
13 42 (8.05%) Dagger
14 41 (7.85%) Android SDK
14 41 (7.85%) CSS
15 35 (6.70%) React Native
16 33 (6.32%) Kafka
17 26 (4.98%) JSON
18 21 (4.02%) Retrofit
19 19 (3.64%) OAuth
Miscellaneous
1 91 (17.43%) Mobile App
2 82 (15.71%) User Experience
3 74 (14.18%) Derivative
4 71 (13.60%) Foreign Exchange (FX)
5 63 (12.07%) Equities
6 60 (11.49%) Fixed Income
7 53 (10.15%) Greenfield Project
8 28 (5.36%) Credit Risk
8 28 (5.36%) Hedge funds
9 18 (3.45%) Data Protection Act
10 12 (2.30%) Equity Derivative
11 7 (1.34%) Chromecast
12 6 (1.15%) Legacy Applications
12 6 (1.15%) Video\Live Streaming
12 6 (1.15%) Virtual Team
13 5 (0.96%) Data Structures
13 5 (0.96%) Enterprise Software
13 5 (0.96%) Mobile Payment
14 4 (0.77%) Internet of Things
14 4 (0.77%) Mobile Banking
Operating Systems
1 183 (35.06%) Android
2 35 (6.70%) Apple iOS
3 16 (3.07%) Linux
4 11 (2.11%) Unix
5 8 (1.53%) Windows
6 3 (0.57%) Android TV
7 2 (0.38%) Mac OS
Processes & Methodologies
1 262 (50.19%) Agile Software Development
2 209 (40.04%) Software Engineering
3 158 (30.27%) Android Development
4 124 (23.75%) TDD
5 109 (20.88%) Asset Management
6 94 (18.01%) Microservices
7 77 (14.75%) Investment Management
8 63 (12.07%) Test Automation
9 55 (10.54%) DevOps
10 54 (10.34%) Release Management
11 50 (9.58%) Continuous Integration
12 49 (9.39%) Portfolio Management
12 49 (9.39%) Release Automation
12 49 (9.39%) Wireframes
13 46 (8.81%) MVVM
14 44 (8.43%) Pair Programming
15 37 (7.09%) Analytics
15 37 (7.09%) Continuous Delivery
16 35 (6.70%) Mobile Development
16 35 (6.70%) Problem-Solving
Programming Languages
1 396 (75.86%) Java
2 189 (36.21%) JavaScript
3 130 (24.90%) Python
4 106 (20.31%) TypeScript
5 88 (16.86%) Scala
6 57 (10.92%) SQL
7 48 (9.20%) C#
8 46 (8.81%) C++
9 44 (8.43%) Java 8
10 24 (4.60%) Apple Swift
11 23 (4.41%) Objective-C
12 14 (2.68%) Go
13 9 (1.72%) C
13 9 (1.72%) PL/SQL
14 6 (1.15%) Ruby
15 4 (0.77%) Bash Shell
15 4 (0.77%) Groovy
16 3 (0.57%) ES6
16 3 (0.57%) PHP
17 2 (0.38%) Rust
Qualifications
1 62 (11.88%) Degree
2 4 (0.77%) ISTQB
2 4 (0.77%) ISTQB Foundation Certification
3 2 (0.38%) AWS Certification
3 2 (0.38%) Computer Science Degree
4 1 (0.19%) SANS
4 1 (0.19%) SC Cleared
4 1 (0.19%) Security Cleared
Quality Assurance & Compliance
1 9 (1.72%) QA
2 7 (1.34%) Accessibility
3 5 (0.96%) WCAG
4 2 (0.38%) GDPR
4 2 (0.38%) HIPAA
5 1 (0.19%) ISO 20022
5 1 (0.19%) PSD2
5 1 (0.19%) TARGET2
System Software
1 101 (19.35%) Docker
2 1 (0.19%) Apache ZooKeeper
2 1 (0.19%) HDFS
Systems Management
1 109 (20.88%) Kubernetes
2 59 (11.30%) Terraform
3 10 (1.92%) Oozie
4 9 (1.72%) Single Sign-On
5 8 (1.53%) Prometheus
6 7 (1.34%) Ansible
7 6 (1.15%) Kibana
7 6 (1.15%) Zipkin
8 5 (0.96%) Bugsnag
8 5 (0.96%) Docker Swarm
8 5 (0.96%) logstash
8 5 (0.96%) Puppet
9 4 (0.77%) Opscode Chef
10 3 (0.57%) Istio
11 2 (0.38%) linkerd
12 1 (0.19%) HP Fortify
Vendors
1 15 (2.87%) CA Agile Central
2 14 (2.68%) CA
3 13 (2.49%) Oracle
4 12 (2.30%) Google
5 11 (2.11%) Xamarin
6 8 (1.53%) SAP
7 7 (1.34%) Solace
8 6 (1.15%) Adobe
8 6 (1.15%) Apple
8 6 (1.15%) Salesforce.com
9 5 (0.96%) hybris
10 3 (0.57%) AppDynamics
10 3 (0.57%) Microsoft
10 3 (0.57%) Splunk
11 2 (0.38%) BiZZdesign
11 2 (0.38%) SaltStack
12 1 (0.19%) Cloudera
12 1 (0.19%) Hortonworks
12 1 (0.19%) Roku
12 1 (0.19%) Samsung