Period
to 25 February 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 25 February 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
25 Feb 2018
Same period 2017 Same period 2016
Rank 674 844 -
Rank change year-on-year +170 - -
Contract jobs citing Kotlin 192 7 0
As % of all contract IT jobs advertised in the UK 0.19% 0.007% -
As % of the Programming Languages category 0.46% 0.018% -
Number of daily rates quoted 150 6 0
UK median daily rate £475 £625 -
Median daily rate % change year-on-year -24.00% - -
UK excluding London median daily rate £413 - -
Number of hourly rates quoted 1 0 0
UK median hourly rate £25.00 - -
UK excluding London median hourly rate £25.00 - -

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 42,068 38,782 41,512
As % of all contract IT jobs advertised in the UK 42.08% 40.74% 38.45%
Number of daily rates quoted 29,575 26,696 28,269
UK median daily rate £460 £425 £413
Median daily rate % change year-on-year +8.24% +3.03% +3.13%
10th Percentile £310 £290 £275
90th Percentile £638 £600 £600
UK excluding London median daily rate £400 £382 £375
% change year-on-year +4.71% +1.87% +7.14%
Number of hourly rates quoted 765 858 1,043
UK median hourly rate £40.00 £40.00 £37.50
Median hourly rate % change year-on-year - +6.67% +13.64%
10th Percentile £16.80 £15.00 £14.13
90th Percentile £52.50 £52.61 £52.25
UK excluding London median hourly rate £40.00 £40.00 £37.50
% change year-on-year - +6.67% +10.29%

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 25 February 2018.

Contractor daily rate histogram for Kotlin in the UK

Kotlin
Top 15 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 25 February 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 +157 185 £476 -23.92% 93
London +91 121 £525 -16.00% 46
UK excluding London - 71 £413 - 48
North of England - 31 £420 - 27
Yorkshire - 18 £425 - 11
Midlands - 13 £300 - 3
North West - 13 £400 - 14
East Midlands - 10 £300 - 1
East of England - 9 £413 - 2
South East - 7 £500 - 8
South West - 4 £413 - 7
Northern Ireland - 4 £350 -
West Midlands - 3 £450 - 2
Scotland - 2 £400 - 1
Wales - 1 £375 -

For the 6 months to 25 February 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.

1 145 (75.52%) Java
2 101 (52.60%) Android
3 94 (48.96%) Android Development
3 94 (48.96%) Agile Software Development
4 75 (39.06%) TDD
5 60 (31.25%) RESTful
6 57 (29.69%) Scala
7 51 (26.56%) RxJava
8 47 (24.48%) Microservices
8 47 (24.48%) Android SDK
9 40 (20.83%) Continuous Integration
10 39 (20.31%) JavaScript
11 38 (19.79%) Spring
11 38 (19.79%) Retrofit
12 35 (18.23%) DevOps
12 35 (18.23%) Scrum
13 34 (17.71%) SQL
14 33 (17.19%) Test Automation
14 33 (17.19%) BDD
15 31 (16.15%) Git (software)
15 31 (16.15%) REST
16 30 (15.63%) Web Services
16 30 (15.63%) Finance
16 30 (15.63%) Software Engineering
17 26 (13.54%) Linux
17 26 (13.54%) Kanban
18 25 (13.02%) Continuous Delivery
19 24 (12.50%) Open Source
19 24 (12.50%) Mobile App
20 23 (11.98%) NoSQL

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 14 (7.29%) Elasticsearch
2 5 (2.60%) Tomcat
3 4 (2.08%) Apache
4 3 (1.56%) Apache Spark
4 3 (1.56%) MQSeries
5 2 (1.04%) Cloud Foundry
5 2 (1.04%) Ethereum
5 2 (1.04%) nginx
6 1 (0.52%) CMS
6 1 (0.52%) Jupyter
6 1 (0.52%) Mule
6 1 (0.52%) SAS
Business Applications
1 2 (1.04%) Distributed Ledger
1 2 (1.04%) R3 Corda
Cloud Services
1 10 (5.21%) Amazon AWS
2 7 (3.65%) Google Play
3 4 (2.08%) GitHub
4 3 (1.56%) Firebase
5 2 (1.04%) Microsoft Azure
6 1 (0.52%) Amazon S3
6 1 (0.52%) Cloud Computing
6 1 (0.52%) Google Cloud Platform
6 1 (0.52%) IaaS
6 1 (0.52%) PaaS
Communications & Networking
1 10 (5.21%) HTTP
2 2 (1.04%) AMQP
2 2 (1.04%) BIG-IP
3 1 (0.52%) Ethernet
3 1 (0.52%) FlexRay
3 1 (0.52%) SAN
Database & Business Intelligence
1 23 (11.98%) NoSQL
2 19 (9.90%) MongoDB
3 12 (6.25%) Relational Database
4 11 (5.73%) Blockchain
5 6 (3.13%) PostgreSQL
6 4 (2.08%) Hadoop
6 4 (2.08%) Hazelcast
6 4 (2.08%) MySQL
7 2 (1.04%) Apache Cassandra
7 2 (1.04%) Big Data
7 2 (1.04%) Couchbase
7 2 (1.04%) Data Warehouse
7 2 (1.04%) InfluxDB
7 2 (1.04%) RDBMS
7 2 (1.04%) Redis
7 2 (1.04%) SQLite
8 1 (0.52%) Amazon Redshift
8 1 (0.52%) Apache Hive
8 1 (0.52%) Data Mining
8 1 (0.52%) SQL Server
Development Applications
1 31 (16.15%) Git (software)
2 22 (11.46%) Maven
3 20 (10.42%) Android Studio
4 16 (8.33%) IntelliJ
5 14 (7.29%) Cucumber
5 14 (7.29%) JUnit
6 13 (6.77%) Mockito
7 12 (6.25%) Gradle
8 9 (4.69%) Jenkins
9 7 (3.65%) Eclipse
10 4 (2.08%) JIRA
11 3 (1.56%) Appium
12 2 (1.04%) Pivotal Tracker
12 2 (1.04%) Robolectric
12 2 (1.04%) TeamCity
13 1 (0.52%) Ant
13 1 (0.52%) Mercurial
13 1 (0.52%) Subversion
13 1 (0.52%) Team Foundation Server
13 1 (0.52%) Xcode
General
1 30 (15.63%) Finance
2 22 (11.46%) Banking
3 16 (8.33%) Games
4 13 (6.77%) Investment Banking
5 9 (4.69%) Telecoms
6 5 (2.60%) Automotive
7 3 (1.56%) Retail
7 3 (1.56%) Retail Banking
8 1 (0.52%) Electronics
8 1 (0.52%) Financial Institution
8 1 (0.52%) Front Office
8 1 (0.52%) Manufacturing
8 1 (0.52%) Marketing
8 1 (0.52%) Publishing
Job Titles
1 172 (89.58%) Developer
2 85 (44.27%) Android Developer
3 76 (39.58%) Java Developer
4 40 (20.83%) Senior Developer
5 30 (15.63%) Senior Java Developer
6 11 (5.73%) Java Scala Developer
6 11 (5.73%) Scala Developer
7 10 (5.21%) Java Android Developer
7 10 (5.21%) Senior Java Scala Developer
7 10 (5.21%) Senior Scala Developer
7 10 (5.21%) Software Engineer
8 8 (4.17%) Android Engineer
8 8 (4.17%) Blockchain Developer
8 8 (4.17%) Java Engineer
9 7 (3.65%) Low Latency Java Developer
9 7 (3.65%) Senior Android Developer
9 7 (3.65%) Software Developer
10 6 (3.13%) Developer/Software Engineer
10 6 (3.13%) Mobile Developer
11 5 (2.60%) Python Developer
Libraries, Frameworks & Software Standards
1 60 (31.25%) RESTful
2 51 (26.56%) RxJava
3 47 (24.48%) Android SDK
4 38 (19.79%) Retrofit
4 38 (19.79%) Spring
5 31 (16.15%) REST
6 30 (15.63%) Web Services
7 20 (10.42%) Dagger
8 17 (8.85%) Hibernate
9 15 (7.81%) SOAP
9 15 (7.81%) Spring Boot
10 14 (7.29%) JSON
11 13 (6.77%) Dropwizard
11 13 (6.77%) Elastic Stack
12 12 (6.25%) Grails
12 12 (6.25%) HTML
12 12 (6.25%) Kafka
13 11 (5.73%) Flask
14 9 (4.69%) CSS
14 9 (4.69%) XML
Miscellaneous
1 24 (12.50%) Mobile App
2 20 (10.42%) User Experience
3 15 (7.81%) Derivative
3 15 (7.81%) Equity Derivative
3 15 (7.81%) Greenfield Project
4 11 (5.73%) Fintech
5 9 (4.69%) Computer Science
6 3 (1.56%) Cloud Native
6 3 (1.56%) Data Structures
6 3 (1.56%) Enterprise Software
6 3 (1.56%) Equities
6 3 (1.56%) Reference Data
6 3 (1.56%) Smartphone
7 2 (1.04%) Animation
7 2 (1.04%) Virtual Team
8 1 (0.52%) Bitcoin
8 1 (0.52%) Data Centre
8 1 (0.52%) Robotics
8 1 (0.52%) Semantic Web
8 1 (0.52%) Wiki
Operating Systems
1 101 (52.60%) Android
2 26 (13.54%) Linux
3 17 (8.85%) Unix
4 16 (8.33%) Apple iOS
5 1 (0.52%) Red Hat Enterprise Linux
5 1 (0.52%) Windows
Processes & Methodologies
1 94 (48.96%) Agile Software Development
1 94 (48.96%) Android Development
2 75 (39.06%) TDD
3 47 (24.48%) Microservices
4 40 (20.83%) Continuous Integration
5 35 (18.23%) DevOps
5 35 (18.23%) Scrum
6 33 (17.19%) BDD
6 33 (17.19%) Test Automation
7 30 (15.63%) Software Engineering
8 26 (13.54%) Kanban
9 25 (13.02%) Continuous Delivery
10 24 (12.50%) Open Source
11 21 (10.94%) Functional Programming
11 21 (10.94%) OOP
12 19 (9.90%) OO
13 18 (9.38%) Unit Testing
14 17 (8.85%) Pair Programming
15 15 (7.81%) High Availability
15 15 (7.81%) Mobile Development
Programming Languages
1 145 (75.52%) Java
2 57 (29.69%) Scala
3 39 (20.31%) JavaScript
4 34 (17.71%) SQL
5 21 (10.94%) Groovy
6 18 (9.38%) Python
7 17 (8.85%) Bash Shell
8 14 (7.29%) Shell Script
9 11 (5.73%) Clojure
10 6 (3.13%) Apple Swift
11 5 (2.60%) Objective-C
12 4 (2.08%) R
13 3 (1.56%) C#
13 3 (1.56%) Jython
14 2 (1.04%) C
14 2 (1.04%) C++
14 2 (1.04%) ES6
14 2 (1.04%) TypeScript
15 1 (0.52%) ClojureScript
15 1 (0.52%) SPARQL
Qualifications
1 11 (5.73%) Degree
2 7 (3.65%) Computer Science Degree
3 1 (0.52%) Master's Degree
3 1 (0.52%) PhD
Quality Assurance & Compliance
1 14 (7.29%) QA
2 1 (0.52%) GDPR
2 1 (0.52%) SLA
System Software
1 11 (5.73%) Docker
2 2 (1.04%) Varnish
Systems Management
1 15 (7.81%) Grafana
2 13 (6.77%) Kibana
2 13 (6.77%) logstash
3 9 (4.69%) Kubernetes
4 8 (4.17%) Ansible
5 5 (2.60%) Opscode Chef
6 4 (2.08%) Puppet
7 2 (1.04%) HockeyApp
7 2 (1.04%) Rancher
8 1 (0.52%) Marathon
8 1 (0.52%) Mesos
Vendors
1 14 (7.29%) Google
2 13 (6.77%) AppDynamics
2 13 (6.77%) Splunk
3 3 (1.56%) Samsung
4 2 (1.04%) F5
4 2 (1.04%) Microsoft
5 1 (0.52%) Capita
5 1 (0.52%) Oracle
5 1 (0.52%) QNX
5 1 (0.52%) SAP