Period
to 17 November 2018

The following table provides summary statistics for contract job vacancies 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 17 November 2018 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
6 months to
17 Nov 2018
Same period 2017 Same period 2016
Rank 551 789 895
Rank change year-on-year +238 +106 -
Contract jobs citing Kotlin 354 101 8
As % of all contract IT jobs advertised in the UK 0.34% 0.098% 0.008%
As % of the Programming Languages category 0.77% 0.23% 0.019%
Number of daily rates quoted 283 83 7
UK median daily rate £500 £450 £575
Median daily rate % change year-on-year +11.11% -21.74% -
10th Percentile £400 £363 £543
90th Percentile £674 £635 £710
UK excluding London median daily rate £420 £420 -
Number of hourly rates quoted 0 0 0
UK median hourly rate - - -
UK excluding London median hourly rate - - -

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 with a requirement for coding skills.

All Programming Languages
UK
Contract vacancies with a requirement for coding skills 46,071 43,141 42,782
As % of all contract IT jobs advertised in the UK 44.68% 41.95% 40.37%
Number of daily rates quoted 32,416 30,149 29,368
UK median daily rate £475 £450 £425
Median daily rate % change year-on-year +5.56% +5.88% +6.25%
10th Percentile £315 £306 £281
90th Percentile £638 £638 £588
UK excluding London median daily rate £425 £400 £375
% change year-on-year +6.25% +6.67% +1.35%
Number of hourly rates quoted 675 803 890
UK median hourly rate £41.53 £40.00 £37.50
Median hourly rate % change year-on-year +3.83% +6.67% +1.35%
10th Percentile £16.25 £16.15 £14.25
90th Percentile £52.50 £52.50 £52.50
UK excluding London median hourly rate £42.00 £40.00 £37.50
% change year-on-year +5.00% +6.67% -

Kotlin
Job Vacancy Trend

Job postings citing Kotlin as a percentage of all IT jobs advertised.

Job vacancy trend for Kotlin in the UK

Kotlin
Contractor Daily Rate Trend

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing Kotlin.

Contractor daily rate trend for Kotlin in the UK

Kotlin
Contractor Daily Rate Histogram

The daily rate distribution of IT jobs citing Kotlin over the 6 months to 17 November 2018.

Contractor daily rate histogram for Kotlin in the UK

Kotlin
Top 13 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Kotlin within the UK over the 6 months to 17 November 2018. 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
England +214 335 £500 +11.11% 170
London +206 280 £525 -2.78% 131
UK excluding London +28 66 £420 - 44
North of England -15 29 £375 -10.71% 16
North West +1 16 £350 -12.50% 9
South East +3 14 £475 +5.56% 14
Yorkshire -11 13 £420 - 6
Scotland - 11 £400 - 4
Midlands -15 5 £475 +5.56% 2
East of England +2 4 £350 -13.85% 2
East Midlands - 4 £525 -
South West -28 3 £450 +22.03% 5
West Midlands -24 1 £425 -5.56% 2

For the 6 months to 17 November 2018, 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 with a requirement for Kotlin.

1 237 (66.95%) Java
2 186 (52.54%) Android
3 167 (47.18%) Android Development
4 165 (46.61%) Agile Software Development
5 140 (39.55%) TDD
6 88 (24.86%) RxJava
7 66 (18.64%) Finance
8 63 (17.80%) Banking
8 63 (17.80%) Microservices
9 62 (17.51%) Spring
10 61 (17.23%) Android SDK
11 60 (16.95%) RESTful
12 53 (14.97%) JavaScript
12 53 (14.97%) Dagger
12 53 (14.97%) Java 8
13 49 (13.84%) Git (software)
14 47 (13.28%) Spring Boot
15 46 (12.99%) BDD
16 45 (12.71%) Mobile App
17 43 (12.15%) Test Automation
18 42 (11.86%) Retrofit
19 41 (11.58%) Scala
19 41 (11.58%) Software Engineering
20 39 (11.02%) Python
20 39 (11.02%) Docker
20 39 (11.02%) Kubernetes
21 38 (10.73%) Scrum
21 38 (10.73%) Computer Science
22 37 (10.45%) OO
23 36 (10.17%) Continuous Integration

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 12 (3.39%) Cloud Foundry
2 8 (2.26%) Elasticsearch
3 6 (1.69%) Apache Spark
4 3 (0.85%) Apache
4 3 (0.85%) CMS
5 2 (0.56%) ArcGIS
5 2 (0.56%) Ethereum
6 1 (0.28%) Confluence
6 1 (0.28%) JBoss
6 1 (0.28%) nginx
6 1 (0.28%) Tomcat
6 1 (0.28%) WebSphere
Applications
1 1 (0.28%) Snapchat
Business Applications
1 3 (0.85%) Distributed Ledger
2 1 (0.28%) ION MarketView
Cloud Services
1 34 (9.60%) Amazon AWS
2 28 (7.91%) Microsoft Azure
3 18 (5.08%) GitHub
4 16 (4.52%) Google Cloud Platform
5 5 (1.41%) Google Play
5 5 (1.41%) npm
5 5 (1.41%) Serverless
6 2 (0.56%) AWS Lambda
6 2 (0.56%) Heroku
6 2 (0.56%) IBM Cloud
7 1 (0.28%) Cloud Computing
Communications & Networking
1 6 (1.69%) SSL
2 4 (1.13%) HTTP
3 3 (0.85%) HTTPS
3 3 (0.85%) Internet
4 2 (0.56%) IPFS
5 1 (0.28%) Bluetooth
Database & Business Intelligence
1 19 (5.37%) PostgreSQL
2 12 (3.39%) MongoDB
3 11 (3.11%) NoSQL
4 7 (1.98%) Big Data
5 6 (1.69%) Hadoop
6 5 (1.41%) Amazon RDS
6 5 (1.41%) Redis
6 5 (1.41%) SQLite
7 4 (1.13%) Blockchain
8 3 (0.85%) Apache Hive
8 3 (0.85%) BigQuery
8 3 (0.85%) MySQL
8 3 (0.85%) Relational Database
9 2 (0.56%) Aerospike
9 2 (0.56%) Apache Cassandra
10 1 (0.28%) CockroachDB
10 1 (0.28%) InfluxDB
10 1 (0.28%) MariaDB
10 1 (0.28%) Oracle Database
Development Applications
1 49 (13.84%) Git (software)
2 34 (9.60%) Jenkins
3 33 (9.32%) Gradle
4 30 (8.47%) JUnit
5 25 (7.06%) Android Studio
6 21 (5.93%) Maven
7 15 (4.24%) Mockito
8 12 (3.39%) Subversion
9 10 (2.82%) JIRA
10 9 (2.54%) JMeter
11 8 (2.26%) CircleCI
11 8 (2.26%) Cucumber
12 7 (1.98%) Appium
12 7 (1.98%) IntelliJ
12 7 (1.98%) Selenium
13 6 (1.69%) WebDriver
14 5 (1.41%) Atlassian Bamboo
14 5 (1.41%) TeamCity
14 5 (1.41%) webpack
15 4 (1.13%) Genymotion
General
1 66 (18.64%) Finance
2 63 (17.80%) Banking
3 24 (6.78%) Publishing
4 10 (2.82%) Automotive
4 10 (2.82%) Front Office
5 7 (1.98%) Back Office
6 6 (1.69%) Games
7 5 (1.41%) Advertising
7 5 (1.41%) Investment Banking
7 5 (1.41%) Retail
8 4 (1.13%) Financial Institution
9 3 (0.85%) Marketing
10 1 (0.28%) Italian Language
10 1 (0.28%) Law
10 1 (0.28%) Multimedia
Job Titles
1 290 (81.92%) Developer
2 147 (41.53%) Android Developer
3 107 (30.23%) Java Developer
4 52 (14.69%) Senior Developer
5 26 (7.34%) Android Engineer
6 25 (7.06%) Senior Android Developer
7 24 (6.78%) Senior Java Developer
8 11 (3.11%) Mobile Developer
9 9 (2.54%) Full Stack Developer
10 8 (2.26%) Java Android Developer
10 8 (2.26%) React Developer
10 8 (2.26%) Scala Developer
10 8 (2.26%) Software Developer
11 7 (1.98%) Applications Developer
11 7 (1.98%) Java Scala Developer
12 6 (1.69%) Architect
12 6 (1.69%) iOS Developer
12 6 (1.69%) Software Engineer
12 6 (1.69%) Tester
13 5 (1.41%) Java Engineer
Libraries, Frameworks & Software Standards
1 88 (24.86%) RxJava
2 62 (17.51%) Spring
3 61 (17.23%) Android SDK
4 60 (16.95%) RESTful
5 53 (14.97%) Dagger
6 47 (13.28%) Spring Boot
7 42 (11.86%) Retrofit
8 35 (9.89%) JSON
9 28 (7.91%) Kafka
10 27 (7.63%) REST
11 25 (7.06%) Web Services
11 25 (7.06%) XML
12 19 (5.37%) HTML
13 18 (5.08%) Hibernate
14 17 (4.80%) CSS
15 15 (4.24%) AngularJS
16 13 (3.67%) Node.js
17 12 (3.39%) HTML5
18 11 (3.11%) Material Design
19 10 (2.82%) React Native
Miscellaneous
1 45 (12.71%) Mobile App
2 38 (10.73%) Computer Science
3 31 (8.76%) Greenfield Project
4 21 (5.93%) User Experience
5 11 (3.11%) Fintech
6 10 (2.82%) Derivative
7 8 (2.26%) Algorithms
7 8 (2.26%) Data Structures
8 7 (1.98%) Hedge funds
9 6 (1.69%) Mobile Banking
10 4 (1.13%) Analytical Skills
10 4 (1.13%) Self-Motivation
11 3 (0.85%) Bitcoin
11 3 (0.85%) Credit Risk
11 3 (0.85%) Equity Derivative
11 3 (0.85%) iPad
11 3 (0.85%) iPhone
11 3 (0.85%) Mobile Payment
11 3 (0.85%) Over-the-Top Content
11 3 (0.85%) Video on Demand
Operating Systems
1 186 (52.54%) Android
2 23 (6.50%) Apple iOS
3 10 (2.82%) Linux
4 7 (1.98%) Unix
5 2 (0.56%) Android TV
6 1 (0.28%) Debian
6 1 (0.28%) Embedded Linux
6 1 (0.28%) Mac OS X
6 1 (0.28%) Ubuntu
6 1 (0.28%) Windows
Processes & Methodologies
1 167 (47.18%) Android Development
2 165 (46.61%) Agile Software Development
3 140 (39.55%) TDD
4 63 (17.80%) Microservices
5 46 (12.99%) BDD
6 43 (12.15%) Test Automation
7 41 (11.58%) Software Engineering
8 38 (10.73%) Scrum
9 37 (10.45%) OO
10 36 (10.17%) Continuous Integration
11 33 (9.32%) MVVM
11 33 (9.32%) Open Source
12 32 (9.04%) Mobile Development
13 27 (7.63%) Pair Programming
14 24 (6.78%) Mathematics
15 23 (6.50%) Continuous Delivery
15 23 (6.50%) Unit Testing
16 22 (6.21%) MVC
17 19 (5.37%) DevOps
18 18 (5.08%) Multithreading
Programming Languages
1 237 (66.95%) Java
2 53 (14.97%) Java 8
2 53 (14.97%) JavaScript
3 41 (11.58%) Scala
4 39 (11.02%) Python
5 29 (8.19%) SQL
6 27 (7.63%) Go
7 25 (7.06%) Clojure
8 19 (5.37%) C#
9 16 (4.52%) Apple Swift
10 15 (4.24%) C
10 15 (4.24%) Objective-C
11 11 (3.11%) C++
11 11 (3.11%) Haskell
12 10 (2.82%) PHP
13 8 (2.26%) ES6
13 8 (2.26%) Groovy
14 6 (1.69%) Bash Shell
15 5 (1.41%) Ruby
16 4 (1.13%) Java 9
Qualifications
1 34 (9.60%) Degree
2 8 (2.26%) Computer Science Degree
3 1 (0.28%) CEH
3 1 (0.28%) CISSP
3 1 (0.28%) SC Cleared
3 1 (0.28%) Security Cleared
Quality Assurance & Compliance
1 12 (3.39%) QA
2 3 (0.85%) PCI DSS
System Software
1 39 (11.02%) Docker
2 1 (0.28%) Firmware
Systems Management
1 39 (11.02%) Kubernetes
2 7 (1.98%) Prometheus
3 6 (1.69%) Kibana
4 4 (1.13%) Grafana
5 3 (0.85%) logstash
6 2 (0.56%) Consul
6 2 (0.56%) Docker Swarm
7 1 (0.28%) Ansible
7 1 (0.28%) Mesos
7 1 (0.28%) Opscode Chef
7 1 (0.28%) Puppet
7 1 (0.28%) SELinux
Vendors
1 26 (7.34%) Google
2 15 (4.24%) Splunk
3 11 (3.11%) AppDynamics
4 8 (2.26%) Atlassian
4 8 (2.26%) Bloomberg
4 8 (2.26%) Reuters
5 7 (1.98%) MuleSoft
6 6 (1.69%) Oracle
7 3 (0.85%) IBM
8 2 (0.56%) Dynatrace
8 2 (0.56%) Microsoft
8 2 (0.56%) New Relic
8 2 (0.56%) Salesforce.com
9 1 (0.28%) Dell
9 1 (0.28%) Facebook
9 1 (0.28%) ForgeRock
9 1 (0.28%) ION Trading
9 1 (0.28%) Sybase
9 1 (0.28%) Twitter
9 1 (0.28%) VocaLink