Period
to

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 23 May 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
England > London
6 months to
23 May 2022
Same period 2021 Same period 2020
Rank 310 150 183
Rank change year-on-year -160 +33 +160
Contract jobs citing Kotlin 300 459 285
As % of all contract jobs advertised in London 0.78% 1.89% 1.43%
As % of the Programming Languages category 1.86% 3.98% 2.95%
Number of daily rates quoted 252 383 205
10th Percentile £475 £413 £413
25th Percentile £525 £463 £463
Median daily rate (50th Percentile) £618 £525 £550
Median % change year-on-year +17.67% -4.55% -
75th Percentile £688 £663 £638
90th Percentile £738 £713 £713
England median daily rate £588 £525 £525
% change year-on-year +11.90% - -2.33%
Number of hourly rates quoted 4 5 8
10th Percentile £70.19 - £50.08
25th Percentile £71.22 - £57.56
Median hourly rate £73.60 £64.00 £61.50
Median % change year-on-year +14.99% +4.07% -
75th Percentile £75.51 - £63.75
90th Percentile £75.71 £66.62 £65.48
England median hourly rate £73.60 £64.00 £61.50
% change year-on-year +14.99% +4.07% -5.38%

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 16,138 11,542 9,666
As % of all contract IT jobs advertised in London 42.16% 47.54% 48.62%
Number of daily rates quoted 12,418 8,623 7,221
10th Percentile £413 £369 £370
25th Percentile £500 £450 £439
Median daily rate (50th Percentile) £600 £530 £525
Median % change year-on-year +13.21% +0.95% -
75th Percentile £712 £638 £625
90th Percentile £800 £713 £700
England median daily rate £550 £500 £500
% change year-on-year +10.00% - +3.09%
Number of hourly rates quoted 108 67 75
10th Percentile £30.18 £20.30 £18.43
25th Percentile £35.00 £30.75 £26.63
Median hourly rate £50.00 £44.50 £47.83
Median % change year-on-year +12.36% -6.96% +30.74%
75th Percentile £67.50 £62.88 £57.00
90th Percentile £77.53 £68.00 £64.43
England median hourly rate £50.81 £41.66 £43.75
% change year-on-year +21.96% -4.78% -1.69%

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 23 May 2022.

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
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 23 May 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
Central London -32 60 £638 +7.59% 75
East London -10 5 £580 +20.83% 10
North London - 1 - -
Kotlin
England

For the 6 months to 23 May 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 London region with a requirement for Kotlin.

1 230 (76.67%) Java
2 117 (39.00%) TDD
3 114 (38.00%) Agile
4 106 (35.33%) Android
5 90 (30.00%) CI/CD
6 86 (28.67%) Android Development
7 78 (26.00%) Spring
8 59 (19.67%) Microservices
9 58 (19.33%) Spring Boot
10 53 (17.67%) Finance
10 53 (17.67%) Software Engineering
10 53 (17.67%) Jenkins
11 51 (17.00%) RxJava
11 51 (17.00%) Fintech
12 49 (16.33%) Docker
12 49 (16.33%) React
13 46 (15.33%) Kubernetes
14 44 (14.67%) AWS
15 43 (14.33%) Full Stack Development
16 42 (14.00%) GCP
17 41 (13.67%) REST
18 40 (13.33%) Banking
18 40 (13.33%) Mobile App
19 37 (12.33%) Social Skills
20 36 (12.00%) GitHub
20 36 (12.00%) JavaScript
20 36 (12.00%) Test Automation
21 34 (11.33%) Git (software)
21 34 (11.33%) TypeScript
22 33 (11.00%) DevOps

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 19 (6.33%) Confluence
2 16 (5.33%) Cloud Foundry
3 3 (1.00%) Apache Spark
4 1 (0.33%) Anypoint
4 1 (0.33%) Apache Airflow
4 1 (0.33%) Mule
4 1 (0.33%) OpenStack
4 1 (0.33%) SharePoint
Business Applications
1 2 (0.67%) Magento
1 2 (0.67%) Shopify
2 1 (0.33%) Distributed Ledger
Cloud Services
1 44 (14.67%) AWS
2 42 (14.00%) GCP
3 36 (12.00%) GitHub
4 33 (11.00%) Azure
5 9 (3.00%) IaaS
6 8 (2.67%) OpenShift
7 6 (2.00%) Serverless
8 5 (1.67%) Firebase
9 4 (1.33%) Google Play
10 3 (1.00%) Amazon S3
10 3 (1.00%) AWS Lambda
10 3 (1.00%) GitHub Actions
10 3 (1.00%) Google Analytics
11 2 (0.67%) AWS CloudFormation
11 2 (0.67%) Bitrise
11 2 (0.67%) Cloud Functions
11 2 (0.67%) Pulumi
11 2 (0.67%) SaaS
11 2 (0.67%) Slack
12 1 (0.33%) Virtual Private Cloud
Communications & Networking
1 9 (3.00%) HTTP
2 8 (2.67%) HTTPS
3 3 (1.00%) MQTT
4 1 (0.33%) 2G
4 1 (0.33%) Kerberos
4 1 (0.33%) SSL
Database & Business Intelligence
1 18 (6.00%) PostgreSQL
2 17 (5.67%) NoSQL
3 13 (4.33%) MongoDB
4 9 (3.00%) SQL Server
5 8 (2.67%) Redis
6 6 (2.00%) Apache Cassandra
7 4 (1.33%) Hadoop
8 3 (1.00%) InfluxDB
8 3 (1.00%) Relational Database
9 2 (0.67%) Amazon RDS
9 2 (0.67%) Big Data
9 2 (0.67%) BigQuery
9 2 (0.67%) Flink
9 2 (0.67%) MySQL
10 1 (0.33%) Amazon DynamoDB
10 1 (0.33%) Apache Hive
10 1 (0.33%) Data Warehouse
10 1 (0.33%) Hazelcast
10 1 (0.33%) SQLite
10 1 (0.33%) Tableau
Development Applications
1 53 (17.67%) Jenkins
2 34 (11.33%) Git (software)
3 31 (10.33%) Gradle
4 23 (7.67%) JUnit
5 22 (7.33%) Android Studio
5 22 (7.33%) JIRA
6 21 (7.00%) Maven
7 7 (2.33%) GitLab
7 7 (2.33%) Mockito
8 6 (2.00%) Postman
8 6 (2.00%) SonarQube
8 6 (2.00%) Spock
9 5 (1.67%) Burp Suite
9 5 (1.67%) TeamCity
9 5 (1.67%) Xcode
10 3 (1.00%) Bitbucket
10 3 (1.00%) CircleCI
10 3 (1.00%) IDA Disassembler
10 3 (1.00%) IntelliJ
10 3 (1.00%) Sonatype Nexus
General
1 53 (17.67%) Finance
2 40 (13.33%) Banking
3 37 (12.33%) Social Skills
4 23 (7.67%) Games
5 18 (6.00%) Retail
6 13 (4.33%) Public Sector
6 13 (4.33%) Publishing
7 9 (3.00%) Automotive
7 9 (3.00%) Investment Banking
8 8 (2.67%) Analytical Skills
8 8 (2.67%) Inclusion and Diversity
8 8 (2.67%) Manufacturing
8 8 (2.67%) Telecoms
9 4 (1.33%) Electronics
9 4 (1.33%) Financial Institution
9 4 (1.33%) Marketing
10 2 (0.67%) Front Office
10 2 (0.67%) Presentation Skills
11 1 (0.33%) Back Office
11 1 (0.33%) Prime Brokerage
Job Titles
1 239 (79.67%) Developer
2 81 (27.00%) Java Developer
3 77 (25.67%) Android Developer
4 54 (18.00%) Senior Developer
5 28 (9.33%) Senior Java Developer
6 25 (8.33%) Full Stack Developer
7 20 (6.67%) Software Engineer
8 15 (5.00%) Java Engineer
9 12 (4.00%) AWS Engineer
9 12 (4.00%) Java Software Engineer
9 12 (4.00%) React Developer
10 11 (3.67%) Java Software Developer
11 10 (3.33%) Developer/Software Engineer
11 10 (3.33%) Senior Android Developer
12 9 (3.00%) Mobile Developer
13 8 (2.67%) Android Engineer
13 8 (2.67%) Lead Developer
14 7 (2.33%) AWS Developer
14 7 (2.33%) Backend Developer
14 7 (2.33%) Lead Android Developer
Libraries, Frameworks & Software Standards
1 78 (26.00%) Spring
2 58 (19.33%) Spring Boot
3 51 (17.00%) RxJava
4 49 (16.33%) React
5 41 (13.67%) REST
6 32 (10.67%) Kafka
7 28 (9.33%) HTML
8 25 (8.33%) CSS
9 22 (7.33%) Dagger
10 21 (7.00%) Android SDK
11 17 (5.67%) AngularJS
12 15 (5.00%) Node.js
13 13 (4.33%) HTML5
13 13 (4.33%) Retrofit
14 12 (4.00%) Android Jetpack
14 12 (4.00%) Swagger
14 12 (4.00%) Vue.js
15 11 (3.67%) CSS3
15 11 (3.67%) RESTful
16 10 (3.33%) React Native
Miscellaneous
1 40 (13.33%) Mobile App
2 28 (9.33%) Greenfield Project
3 25 (8.33%) Cloud Native
4 15 (5.00%) User Experience
5 11 (3.67%) Data Protection Act
6 8 (2.67%) Legacy Systems
7 7 (2.33%) Algorithms
8 5 (1.67%) Derivative
8 5 (1.67%) Public Cloud
8 5 (1.67%) Self-Motivation
9 4 (1.33%) Enterprise Software
9 4 (1.33%) Renewable Energy
10 3 (1.00%) Equities
10 3 (1.00%) Equity Derivative
10 3 (1.00%) IoT
10 3 (1.00%) Mobile Banking
10 3 (1.00%) Video on Demand
11 2 (0.67%) Client/Server
11 2 (0.67%) iPad
11 2 (0.67%) Wiki
Operating Systems
1 106 (35.33%) Android
2 24 (8.00%) Apple iOS
3 9 (3.00%) Linux
4 4 (1.33%) Unix
5 3 (1.00%) Windows
6 2 (0.67%) Alpine Linux
6 2 (0.67%) CentOS
7 1 (0.33%) Android TV
7 1 (0.33%) Mac OS
Processes & Methodologies
1 117 (39.00%) TDD
2 114 (38.00%) Agile
3 90 (30.00%) CI/CD
4 86 (28.67%) Android Development
5 59 (19.67%) Microservices
6 53 (17.67%) Software Engineering
7 51 (17.00%) Fintech
8 43 (14.33%) Full Stack Development
9 36 (12.00%) Test Automation
10 33 (11.00%) DevOps
11 31 (10.33%) Continuous Integration
12 29 (9.67%) MVVM
13 27 (9.00%) Scrum
14 26 (8.67%) Computer Science
15 23 (7.67%) Problem-Solving
16 22 (7.33%) Mobile Development
16 22 (7.33%) Pair Programming
17 19 (6.33%) BDD
17 19 (6.33%) Data Protection
18 18 (6.00%) Unit Testing
Programming Languages
1 230 (76.67%) Java
2 36 (12.00%) JavaScript
3 34 (11.33%) TypeScript
4 30 (10.00%) Python
5 26 (8.67%) SQL
6 19 (6.33%) Apple Swift
7 17 (5.67%) Go
8 13 (4.33%) Scala
9 11 (3.67%) Groovy
10 9 (3.00%) Objective-C
11 7 (2.33%) Bash
11 7 (2.33%) Shell Script
12 6 (2.00%) Ruby
13 5 (1.67%) C++
14 4 (1.33%) C#
15 3 (1.00%) C
16 2 (0.67%) ES7
16 2 (0.67%) PowerShell
16 2 (0.67%) Rust
17 1 (0.33%) F#
Qualifications
1 24 (8.00%) Degree
2 8 (2.67%) Computer Science Degree
3 2 (0.67%) CEH
3 2 (0.67%) CISSP
3 2 (0.67%) CREST Certified
3 2 (0.67%) OSCP
3 2 (0.67%) SANS
4 1 (0.33%) CISA
4 1 (0.33%) GIAC
4 1 (0.33%) GPEN
4 1 (0.33%) SC Cleared
4 1 (0.33%) Security Cleared
Quality Assurance & Compliance
1 7 (2.33%) Accessibility
1 7 (2.33%) QA
2 1 (0.33%) Data Quality
System Software
1 49 (16.33%) Docker
2 1 (0.33%) HDFS
Systems Management
1 46 (15.33%) Kubernetes
2 16 (5.33%) Terraform
3 7 (2.33%) Grafana
4 6 (2.00%) Ansible
4 6 (2.00%) Kibana
4 6 (2.00%) Prometheus
5 4 (1.33%) Puppet
6 2 (0.67%) vRealize
7 1 (0.33%) Hadoop YARN
7 1 (0.33%) Istio
7 1 (0.33%) Kustomize
Vendors
1 33 (11.00%) Google
2 9 (3.00%) Microsoft
3 6 (2.00%) SAP
4 4 (1.33%) Oracle
5 3 (1.00%) Apple
6 2 (0.67%) Adobe
6 2 (0.67%) AppDynamics
6 2 (0.67%) CA
6 2 (0.67%) CA Agile Central
6 2 (0.67%) hybris
6 2 (0.67%) Salesforce.com
6 2 (0.67%) Splunk
6 2 (0.67%) VMware
7 1 (0.33%) Checkmarx
7 1 (0.33%) Huawei
7 1 (0.33%) MuleSoft
7 1 (0.33%) Netsparker
7 1 (0.33%) Roku
7 1 (0.33%) Spotify
7 1 (0.33%) TOWER Software