Period
to 27 February 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 27 February 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
27 Feb 2021
Same period 2020 Same period 2019
Rank 102 215 349
Rank change year-on-year +113 +134 +170
Contract jobs citing Kotlin 501 321 294
As % of all contract jobs advertised in London 2.55% 1.14% 0.67%
As % of the Programming Languages category 5.24% 2.41% 1.36%
Number of daily rates quoted 525 233 252
Median daily rate £525 £525 £550
Median daily rate % change year-on-year - -4.55% +4.76%
10th Percentile £406 £400 £425
90th Percentile £713 £721 £675
England median daily rate £525 £500 £525
% change year-on-year +5.00% -4.76% +10.53%
Number of hourly rates quoted 4 9 0
Median hourly rate £64.00 £61.50 -
Median hourly rate % change year-on-year +4.07% - -
England median hourly rate £64.00 £55.00 £63.65
% change year-on-year +16.36% -13.59% +154.60%

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 9,570 13,344 21,645
As % of all contract IT jobs advertised in London 48.80% 47.41% 49.20%
Number of daily rates quoted 7,027 10,018 16,534
Median daily rate £525 £525 £525
10th Percentile £350 £375 £363
90th Percentile £700 £688 £675
England median daily rate £488 £488 £485
% change year-on-year - +0.62% +2.00%
Number of hourly rates quoted 69 94 101
Median hourly rate £40.00 £47.83 £36.67
Median hourly rate % change year-on-year -16.37% +30.43% +14.59%
10th Percentile £21.63 £18.72 £18.70
90th Percentile £68.36 £63.75 £53.75
Median hourly rate £42.50 £44.00 £42.50
% change year-on-year -3.41% +3.53% +6.25%

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 27 February 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 27 February 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 27 February 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 +85 64 £550 +6.80% 78
West London +29 3 £800 +53.48% 11
East London +31 2 £600 +28.34% 13
Kotlin
England

For the 6 months to 27 February 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.

1 399 (79.64%) Java
2 281 (56.09%) Agile Software Development
3 254 (50.70%) Software Engineering
4 253 (50.50%) Finance
5 220 (43.91%) AWS
6 219 (43.71%) JavaScript
7 209 (41.72%) React
8 193 (38.52%) Python
9 192 (38.32%) Front Office
10 166 (33.13%) Asset Management
10 166 (33.13%) Web Services
11 146 (29.14%) Android
12 124 (24.75%) Kubernetes
13 117 (23.35%) Docker
13 117 (23.35%) Node.js
14 112 (22.36%) Android Development
14 112 (22.36%) Equities
15 110 (21.96%) Derivative
16 105 (20.96%) TDD
17 104 (20.76%) Fixed Income
18 102 (20.36%) SQL
19 101 (20.16%) Investment Management
20 94 (18.76%) Mobile App
21 93 (18.56%) Azure
22 89 (17.76%) Terraform
22 89 (17.76%) User Experience
23 88 (17.56%) Scala
24 86 (17.17%) Microservices
25 84 (16.77%) TypeScript
26 79 (15.77%) Spring

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 67 (13.37%) Apache
2 43 (8.58%) Apache Spark
3 30 (5.99%) Cloud Foundry
4 15 (2.99%) Confluence
5 10 (2.00%) WebSphere
6 9 (1.80%) Apache Airflow
6 9 (1.80%) WebLogic
7 7 (1.40%) Elasticsearch
8 2 (0.40%) Mule
9 1 (0.20%) CMS
9 1 (0.20%) SharePoint
Applications
1 2 (0.40%) Sketch
1 2 (0.40%) Zeplin
Business Applications
1 2 (0.40%) Dynamics NAV
Cloud Services
1 220 (43.91%) AWS
2 93 (18.56%) Azure
3 73 (14.57%) GCP
4 64 (12.77%) Serverless
5 62 (12.38%) AWS Lambda
6 61 (12.18%) Amazon EC2
6 61 (12.18%) Amazon S3
7 44 (8.78%) GitHub
8 10 (2.00%) Amazon ECS
9 9 (1.80%) Cloud Computing
9 9 (1.80%) Firebase
10 6 (1.20%) IaaS
11 5 (1.00%) Slack
12 4 (0.80%) PaaS
12 4 (0.80%) SaaS
13 3 (0.60%) BrowserStack
13 3 (0.60%) Sauce Labs
14 2 (0.40%) Bitrise
14 2 (0.40%) Google Play
15 1 (0.20%) npm
Communications & Networking
1 12 (2.40%) HTTP
2 11 (2.20%) HTTPS
3 1 (0.20%) Bluetooth
3 1 (0.20%) Wi-Fi
Database & Business Intelligence
1 70 (13.97%) Amazon DynamoDB
2 58 (11.58%) Apache Ignite
3 39 (7.78%) MongoDB
4 36 (7.19%) NoSQL
5 14 (2.79%) SQL Server
6 12 (2.40%) SQLite
7 10 (2.00%) Hadoop
8 9 (1.80%) Amazon RDS
9 7 (1.40%) Relational Database
10 5 (1.00%) Apache Cassandra
10 5 (1.00%) Couchbase
10 5 (1.00%) Hazelcast
10 5 (1.00%) Redis
11 3 (0.60%) Blockchain
11 3 (0.60%) InfluxDB
12 1 (0.20%) Apache Hive
12 1 (0.20%) Big Data
12 1 (0.20%) Flink
12 1 (0.20%) HBase
12 1 (0.20%) MySQL
Development Applications
1 77 (15.37%) Git (software)
1 77 (15.37%) Jenkins
2 42 (8.38%) JIRA
3 39 (7.78%) JUnit
4 37 (7.39%) Mockito
5 20 (3.99%) Gradle
6 18 (3.59%) git-flow
7 15 (2.99%) Maven
8 14 (2.79%) Android Studio
8 14 (2.79%) Cucumber
9 13 (2.59%) Cypress.io
10 11 (2.20%) TeamCity
11 10 (2.00%) Selenium
12 9 (1.80%) Ant
12 9 (1.80%) Appium
12 9 (1.80%) JMeter
12 9 (1.80%) webpack
13 5 (1.00%) Eclipse
13 5 (1.00%) fastlane
13 5 (1.00%) GitLab
General
1 253 (50.50%) Finance
2 192 (38.32%) Front Office
3 72 (14.37%) Banking
4 15 (2.99%) Investment Banking
5 9 (1.80%) Games
6 5 (1.00%) Automotive
6 5 (1.00%) Retail Banking
7 4 (0.80%) German Language
7 4 (0.80%) Retail
8 3 (0.60%) Financial Institution
9 2 (0.40%) Manufacturing
9 2 (0.40%) Multimedia
9 2 (0.40%) Telecoms
10 1 (0.20%) Advertising
10 1 (0.20%) Aerospace
10 1 (0.20%) Electronics
10 1 (0.20%) Law
10 1 (0.20%) Legal
10 1 (0.20%) Marketing
10 1 (0.20%) Publishing
Job Titles
1 372 (74.25%) Developer
2 126 (25.15%) Software Engineer
3 97 (19.36%) Developer/Software Engineer
4 95 (18.96%) Android Developer
5 93 (18.56%) React Developer
6 72 (14.37%) Python Engineer
7 71 (14.17%) Python Developer
7 71 (14.17%) Python Software Engineer
8 67 (13.37%) Java Developer
9 54 (10.78%) UI Developer
10 53 (10.58%) Designer
10 53 (10.58%) UI Designer
10 53 (10.58%) UI Engineer
10 53 (10.58%) UI/UX Designer
10 53 (10.58%) UI/UX Developer
10 53 (10.58%) UX Designer
10 53 (10.58%) UX Developer
10 53 (10.58%) UX Engineer
11 42 (8.38%) JavaScript Developer
12 41 (8.18%) Senior Developer
Libraries, Frameworks & Software Standards
1 209 (41.72%) React
2 166 (33.13%) Web Services
3 117 (23.35%) Node.js
4 79 (15.77%) Spring
5 77 (15.37%) AngularJS
6 76 (15.17%) Vue.js
7 70 (13.97%) RxJava
8 69 (13.77%) RESTful
9 52 (10.38%) REST
9 52 (10.38%) Spring Boot
10 45 (8.98%) gRPC
11 41 (8.18%) Dagger
12 36 (7.19%) Protocol Buffers
13 35 (6.99%) Kafka
14 33 (6.59%) .NET
15 30 (5.99%) JSON
16 24 (4.79%) Material Design
17 23 (4.59%) CSS
17 23 (4.59%) HTML
18 19 (3.79%) Hystrix
Miscellaneous
1 112 (22.36%) Equities
2 110 (21.96%) Derivative
3 104 (20.76%) Fixed Income
4 94 (18.76%) Mobile App
5 89 (17.76%) User Experience
6 74 (14.77%) Foreign Exchange (FX)
7 52 (10.38%) Hedge funds
8 28 (5.59%) Greenfield Project
9 14 (2.79%) Mobile Payment
10 13 (2.59%) Data Structures
10 13 (2.59%) Virtual Team
11 10 (2.00%) Analytical Skills
12 7 (1.40%) Credit Risk
12 7 (1.40%) Public Cloud
13 6 (1.20%) Enterprise Software
14 5 (1.00%) Cloud Native
14 5 (1.00%) Equity Derivative
14 5 (1.00%) Over-the-Top Content
14 5 (1.00%) Video\Live Streaming
15 3 (0.60%) Mainframe
Operating Systems
1 146 (29.14%) Android
2 37 (7.39%) Apple iOS
3 6 (1.20%) Linux
4 4 (0.80%) Android TV
4 4 (0.80%) Unix
4 4 (0.80%) Windows
5 2 (0.40%) Mac OS
6 1 (0.20%) Mac OS X
6 1 (0.20%) Solaris
Processes & Methodologies
1 281 (56.09%) Agile Software Development
2 254 (50.70%) Software Engineering
3 166 (33.13%) Asset Management
4 112 (22.36%) Android Development
5 105 (20.96%) TDD
6 101 (20.16%) Investment Management
7 86 (17.17%) Microservices
8 69 (13.77%) Release Management
9 62 (12.38%) Portfolio Management
10 59 (11.78%) Test Automation
11 57 (11.38%) Pair Programming
12 53 (10.58%) Release Automation
12 53 (10.58%) Wireframes
13 52 (10.38%) Continuous Integration
13 52 (10.38%) Scrum
14 49 (9.78%) Continuous Delivery
15 48 (9.58%) SDLC
16 46 (9.18%) Mobile Development
17 45 (8.98%) DevOps
18 38 (7.58%) MVVM
Programming Languages
1 399 (79.64%) Java
2 219 (43.71%) JavaScript
3 193 (38.52%) Python
4 102 (20.36%) SQL
5 88 (17.56%) Scala
6 84 (16.77%) TypeScript
7 70 (13.97%) C#
8 46 (9.18%) Java 8
9 39 (7.78%) C++
10 31 (6.19%) Apple Swift
11 27 (5.39%) Clojure
12 16 (3.19%) Objective-C
13 5 (1.00%) Dart
13 5 (1.00%) Go
14 4 (0.80%) C
14 4 (0.80%) ClojureScript
15 3 (0.60%) Groovy
15 3 (0.60%) PowerShell
16 2 (0.40%) PHP
16 2 (0.40%) Ruby
Qualifications
1 65 (12.97%) Degree
2 9 (1.80%) Computer Science Degree
3 7 (1.40%) TOGAF Certification
4 1 (0.20%) Master's Degree
4 1 (0.20%) SANS
4 1 (0.20%) SC Cleared
4 1 (0.20%) Security Cleared
Quality Assurance & Compliance
1 7 (1.40%) QA
2 1 (0.20%) ISO 20022
2 1 (0.20%) PSD2
2 1 (0.20%) SEPA
2 1 (0.20%) TARGET2
System Software
1 117 (23.35%) Docker
2 1 (0.20%) HDFS
Systems Management
1 124 (24.75%) Kubernetes
2 89 (17.76%) Terraform
3 27 (5.39%) Prometheus
4 9 (1.80%) Ansible
5 8 (1.60%) Zipkin
6 3 (0.60%) Grafana
6 3 (0.60%) Istio
6 3 (0.60%) Puppet
7 1 (0.20%) HP Fortify
7 1 (0.20%) Rancher
Vendors
1 36 (7.19%) Bloomberg
2 21 (4.19%) AppDynamics
2 21 (4.19%) Splunk
3 20 (3.99%) MuleSoft
4 8 (1.60%) CA Agile Central
4 8 (1.60%) Oracle
5 7 (1.40%) CA
5 7 (1.40%) Microsoft
6 6 (1.20%) Google
7 4 (0.80%) Cognizant
8 3 (0.60%) Facebook
8 3 (0.60%) Salesforce.com
9 2 (0.40%) Confluent
9 2 (0.40%) IBM
9 2 (0.40%) SendGrid
9 2 (0.40%) Solace
9 2 (0.40%) Telerik
9 2 (0.40%) Xamarin
10 1 (0.20%) Adobe
10 1 (0.20%) HP