Period
to 19 August 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 19 August 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
19 Aug 2018
Same period 2017 Same period 2016
Rank 597 821 916
Rank change year-on-year +224 +95 -
Contract jobs citing Kotlin 308 48 5
As % of all contract IT jobs advertised in the UK 0.30% 0.050% 0.005%
As % of the Programming Languages category 0.68% 0.12% 0.012%
Number of daily rates quoted 256 40 5
UK median daily rate £518 £531 £575
Median daily rate % change year-on-year -2.59% -7.61% -
10th Percentile £397 £362 £533
90th Percentile £675 £639 £753
UK excluding London median daily rate £410 £400 -
% change year-on-year +2.50% - -
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 45,280 40,533 42,557
As % of all contract IT jobs advertised in the UK 44.30% 42.02% 39.22%
Number of daily rates quoted 31,757 27,866 29,249
UK median daily rate £463 £450 £425
Median daily rate % change year-on-year +2.78% +5.88% +6.25%
10th Percentile £313 £300 £280
90th Percentile £638 £625 £588
UK excluding London median daily rate £413 £400 £375
% change year-on-year +3.13% +6.67% +7.14%
Number of hourly rates quoted 737 779 909
UK median hourly rate £41.50 £40.00 £37.50
Median hourly rate % change year-on-year +3.75% +6.67% +7.14%
10th Percentile £16.25 £16.00 £13.46
90th Percentile £52.50 £53.75 £51.00
UK excluding London median hourly rate £41.50 £40.50 £37.50
% change year-on-year +2.47% +8.00% +4.17%

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 19 August 2018.

Contractor daily rate histogram for Kotlin in the UK

Kotlin
Top 12 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 19 August 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 +205 290 £525 -1.18% 141
London +169 239 £550 - 93
UK excluding London +27 60 £410 +2.50% 53
North of England +5 26 £420 - 25
Yorkshire +8 18 £420 - 13
South East -1 15 £375 -16.67% 11
Scotland - 9 £400 - 2
North West - 8 £363 - 11
East Midlands - 4 £300 - 3
Midlands - 4 £300 - 5
East of England +2 3 £475 +18.75% 3
South West -14 3 £450 +24.14% 4

For the 6 months to 19 August 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.

1 209 (67.86%) Java
2 175 (56.82%) Agile Software Development
3 155 (50.32%) Android
4 142 (46.10%) TDD
5 136 (44.16%) Android Development
6 89 (28.90%) RxJava
7 75 (24.35%) RESTful
8 67 (21.75%) Dagger
8 67 (21.75%) Java 8
9 63 (20.45%) Retrofit
10 61 (19.81%) Microservices
10 61 (19.81%) JavaScript
11 60 (19.48%) BDD
11 60 (19.48%) Android SDK
12 58 (18.83%) Spring
13 47 (15.26%) Finance
14 46 (14.94%) Banking
14 46 (14.94%) Test Automation
15 45 (14.61%) Mobile App
16 44 (14.29%) Git (software)
17 42 (13.64%) Continuous Integration
18 41 (13.31%) Spring Boot
19 38 (12.34%) OO
19 38 (12.34%) Software Engineering
20 35 (11.36%) Computer Science
20 35 (11.36%) Mobile Development
20 35 (11.36%) Docker
21 34 (11.04%) Scala
21 34 (11.04%) Open Source
21 34 (11.04%) Web Services

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 17 (5.52%) Elasticsearch
2 8 (2.60%) Cloud Foundry
3 6 (1.95%) ArcGIS
4 3 (0.97%) WebLogic
4 3 (0.97%) WebSphere
5 2 (0.65%) Apache Spark
5 2 (0.65%) Confluence
5 2 (0.65%) Ethereum
6 1 (0.32%) Apache
6 1 (0.32%) CMS
6 1 (0.32%) JBoss
6 1 (0.32%) Mendix
6 1 (0.32%) Tomcat
Business Applications
1 3 (0.97%) Distributed Ledger
Cloud Services
1 20 (6.49%) GitHub
2 16 (5.19%) Microsoft Azure
3 14 (4.55%) Amazon AWS
4 6 (1.95%) Google Play
5 2 (0.65%) Heroku
5 2 (0.65%) IaaS
5 2 (0.65%) npm
6 1 (0.32%) Cloud Computing
6 1 (0.32%) Firebase
6 1 (0.32%) Google Cloud Platform
Communications & Networking
1 16 (5.19%) HTTP
2 2 (0.65%) Internet
2 2 (0.65%) IPFS
3 1 (0.32%) HTTPS
Database & Business Intelligence
1 19 (6.17%) MongoDB
2 18 (5.84%) NoSQL
3 12 (3.90%) PostgreSQL
4 6 (1.95%) Relational Database
5 5 (1.62%) Blockchain
6 4 (1.30%) Big Data
7 3 (0.97%) MySQL
7 3 (0.97%) Redis
8 2 (0.65%) Amazon RDS
8 2 (0.65%) Apache Cassandra
8 2 (0.65%) Apache Hive
8 2 (0.65%) Hadoop
9 1 (0.32%) Aerospike
9 1 (0.32%) CockroachDB
9 1 (0.32%) MariaDB
9 1 (0.32%) SQLite
Development Applications
1 44 (14.29%) Git (software)
2 31 (10.06%) Gradle
3 30 (9.74%) JUnit
4 28 (9.09%) Maven
5 25 (8.12%) Android Studio
6 24 (7.79%) Jenkins
7 16 (5.19%) Mockito
8 11 (3.57%) Cucumber
8 11 (3.57%) git-flow
9 9 (2.92%) JIRA
10 8 (2.60%) JMeter
10 8 (2.60%) Pivotal Tracker
11 6 (1.95%) CircleCI
11 6 (1.95%) IntelliJ
12 5 (1.62%) Calabash
12 5 (1.62%) Selenium
12 5 (1.62%) WebDriver
13 4 (1.30%) Ant
14 3 (0.97%) Eclipse
14 3 (0.97%) Xcode
General
1 47 (15.26%) Finance
2 46 (14.94%) Banking
3 15 (4.87%) Automotive
4 11 (3.57%) Investment Banking
5 10 (3.25%) Retail
6 8 (2.60%) Publishing
7 5 (1.62%) Games
7 5 (1.62%) Retail Banking
8 3 (0.97%) Marketing
9 2 (0.65%) Back Office
9 2 (0.65%) Financial Institution
10 1 (0.32%) Advertising
10 1 (0.32%) Italian Language
10 1 (0.32%) Telecoms
Job Titles
1 254 (82.47%) Developer
2 123 (39.94%) Android Developer
3 101 (32.79%) Java Developer
4 41 (13.31%) Senior Developer
5 21 (6.82%) Senior Java Developer
6 19 (6.17%) Senior Android Developer
7 17 (5.52%) Android Engineer
8 15 (4.87%) Agile Developer
9 13 (4.22%) Agile Java Developer
9 13 (4.22%) Software Engineer
10 12 (3.90%) Mobile Developer
11 11 (3.57%) Scala Developer
12 10 (3.25%) Full Stack Developer
12 10 (3.25%) iOS Android Developer
12 10 (3.25%) iOS Developer
12 10 (3.25%) Java Engineer
12 10 (3.25%) Java Scala Developer
13 8 (2.60%) Java Software Engineer
14 7 (2.27%) Java Software Developer
14 7 (2.27%) Lead Developer
Libraries, Frameworks & Software Standards
1 89 (28.90%) RxJava
2 75 (24.35%) RESTful
3 67 (21.75%) Dagger
4 63 (20.45%) Retrofit
5 60 (19.48%) Android SDK
6 58 (18.83%) Spring
7 41 (13.31%) Spring Boot
8 34 (11.04%) Web Services
9 31 (10.06%) Kafka
10 28 (9.09%) HTML
11 27 (8.77%) CSS
11 27 (8.77%) Hibernate
12 24 (7.79%) REST
13 20 (6.49%) JSON
14 19 (6.17%) HTML5
15 13 (4.22%) XML
16 11 (3.57%) AngularJS
16 11 (3.57%) Node.js
17 10 (3.25%) gRPC
17 10 (3.25%) SOAP
Miscellaneous
1 45 (14.61%) Mobile App
2 35 (11.36%) Computer Science
3 32 (10.39%) Greenfield Project
4 25 (8.12%) User Experience
5 21 (6.82%) Fintech
6 12 (3.90%) Derivative
6 12 (3.90%) Equity Derivative
7 10 (3.25%) Mobile Payment
8 6 (1.95%) Algorithms
8 6 (1.95%) Analytical Skills
9 5 (1.62%) Data Structures
9 5 (1.62%) Video\Live Streaming
10 4 (1.30%) Over-the-Top Content
10 4 (1.30%) Video on Demand
11 3 (0.97%) Bitcoin
11 3 (0.97%) Enterprise Software
12 2 (0.65%) Blog
12 2 (0.65%) Foreign Exchange (FX)
12 2 (0.65%) Smartphone
12 2 (0.65%) Virtual Team
Operating Systems
1 155 (50.32%) Android
2 33 (10.71%) Apple iOS
3 22 (7.14%) Linux
4 10 (3.25%) Unix
5 2 (0.65%) Mac OS
6 1 (0.32%) Debian
6 1 (0.32%) Embedded Linux
6 1 (0.32%) Mac OS X
6 1 (0.32%) Windows
Processes & Methodologies
1 175 (56.82%) Agile Software Development
2 142 (46.10%) TDD
3 136 (44.16%) Android Development
4 61 (19.81%) Microservices
5 60 (19.48%) BDD
6 46 (14.94%) Test Automation
7 42 (13.64%) Continuous Integration
8 38 (12.34%) OO
8 38 (12.34%) Software Engineering
9 35 (11.36%) Mobile Development
10 34 (11.04%) Open Source
11 33 (10.71%) Pair Programming
12 27 (8.77%) DevOps
12 27 (8.77%) Scrum
13 25 (8.12%) Continuous Delivery
14 23 (7.47%) OOP
15 21 (6.82%) Unit Testing
16 20 (6.49%) MVVM
17 18 (5.84%) Kanban
18 17 (5.52%) MVC
Programming Languages
1 209 (67.86%) Java
2 67 (21.75%) Java 8
3 61 (19.81%) JavaScript
4 34 (11.04%) Scala
5 21 (6.82%) Go
6 20 (6.49%) Python
7 19 (6.17%) Apple Swift
8 17 (5.52%) SQL
9 13 (4.22%) Objective-C
10 11 (3.57%) C++
10 11 (3.57%) Groovy
11 10 (3.25%) Bash Shell
11 10 (3.25%) C
12 8 (2.60%) Shell Script
13 7 (2.27%) Clojure
14 5 (1.62%) C#
14 5 (1.62%) PHP
15 4 (1.30%) Java 9
15 4 (1.30%) Ruby
16 3 (0.97%) Solidity
Qualifications
1 28 (9.09%) Degree
2 13 (4.22%) Computer Science Degree
3 2 (0.65%) Master's Degree
4 1 (0.32%) SC Cleared
4 1 (0.32%) Security Cleared
Quality Assurance & Compliance
1 11 (3.57%) QA
2 5 (1.62%) PCI DSS
System Software
1 35 (11.36%) Docker
Systems Management
1 27 (8.77%) Kubernetes
2 8 (2.60%) Grafana
2 8 (2.60%) Kibana
2 8 (2.60%) logstash
3 2 (0.65%) Consul
3 2 (0.65%) Docker Swarm
3 2 (0.65%) Mesos
3 2 (0.65%) Terraform
4 1 (0.32%) Marathon
4 1 (0.32%) SELinux
Vendors
1 13 (4.22%) Google
2 12 (3.90%) Splunk
3 8 (2.60%) AppDynamics
4 5 (1.62%) Xamarin
5 1 (0.32%) Appcelerator
5 1 (0.32%) ForgeRock
5 1 (0.32%) Kony
5 1 (0.32%) Oracle
5 1 (0.32%) OutSystems
5 1 (0.32%) Samsung
5 1 (0.32%) Sybase