Period
to 26 May 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 26 May 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
26 May 2018
Same period 2017 Same period 2016
Rank 605 833 -
Rank change year-on-year +228 - -
Contract jobs citing Kotlin 292 14 0
As % of all contract IT jobs advertised in the UK 0.29% 0.015% -
As % of the Programming Languages category 0.67% 0.037% -
Number of daily rates quoted 240 14 0
UK median daily rate £511 £625 -
Median daily rate % change year-on-year -18.20% - -
UK excluding London median daily rate £400 - -
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 43,707 37,760 40,602
As % of all contract IT jobs advertised in the UK 43.06% 41.46% 38.40%
Number of daily rates quoted 30,564 25,903 27,776
UK median daily rate £463 £430 £418
Median daily rate % change year-on-year +7.56% +2.99% +4.38%
10th Percentile £313 £300 £275
90th Percentile £638 £613 £600
UK excluding London median daily rate £405 £388 £375
% change year-on-year +4.52% +3.33% +7.14%
Number of hourly rates quoted 793 814 950
UK median hourly rate £40.00 £41.50 £38.50
Median hourly rate % change year-on-year -3.61% +7.79% +10.00%
10th Percentile £16.89 £16.65 £14.11
90th Percentile £52.50 £55.78 £52.25
UK excluding London median hourly rate £40.00 £41.25 £38.50
% change year-on-year -3.03% +7.14% +10.00%

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 26 May 2018.

Contractor daily rate histogram for Kotlin in the UK

Kotlin
Top 14 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 26 May 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 +212 279 £525 -16.00% 120
London +148 216 £540 -13.60% 62
UK excluding London - 72 £400 - 67
North of England - 24 £425 - 36
South East - 19 £375 - 7
Yorkshire - 15 £425 - 19
Midlands - 13 £300 - 1
East Midlands - 12 £300 -
North West - 9 £400 - 13
East of England - 6 £413 - 6
Scotland - 5 £400 - 8
Northern Ireland - 4 £350 - 1
West Midlands - 1 - - 1
South West - 1 - - 8

For the 6 months to 26 May 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.

1 207 (70.89%) Java
2 164 (56.16%) Agile Software Development
3 157 (53.77%) Android
4 141 (48.29%) Android Development
5 139 (47.60%) TDD
6 96 (32.88%) RxJava
7 82 (28.08%) RESTful
8 75 (25.68%) Retrofit
9 69 (23.63%) Microservices
10 66 (22.60%) Scala
11 63 (21.58%) Dagger
12 62 (21.23%) Android SDK
13 61 (20.89%) BDD
13 61 (20.89%) JavaScript
14 59 (20.21%) Java 8
15 58 (19.86%) Spring
16 57 (19.52%) Continuous Integration
17 50 (17.12%) Web Services
18 48 (16.44%) Software Engineering
19 47 (16.10%) DevOps
20 41 (14.04%) Git (software)
21 39 (13.36%) REST
22 36 (12.33%) SQL
22 36 (12.33%) Finance
22 36 (12.33%) Mobile App
23 34 (11.64%) Continuous Delivery
23 34 (11.64%) Test Automation
24 33 (11.30%) Pair Programming
24 33 (11.30%) Linux
25 32 (10.96%) Open Source

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 23 (7.88%) Elasticsearch
2 7 (2.40%) Cloud Foundry
3 6 (2.05%) ArcGIS
4 4 (1.37%) Apache
4 4 (1.37%) Tomcat
5 3 (1.03%) Apache Spark
5 3 (1.03%) WebLogic
5 3 (1.03%) WebSphere
6 2 (0.68%) Confluence
6 2 (0.68%) MQSeries
6 2 (0.68%) nginx
7 1 (0.34%) CMS
7 1 (0.34%) Ethereum
7 1 (0.34%) Jupyter
Business Applications
1 2 (0.68%) Distributed Ledger
1 2 (0.68%) R3 Corda
Cloud Services
1 18 (6.16%) Amazon AWS
2 15 (5.14%) GitHub
3 11 (3.77%) Microsoft Azure
4 9 (3.08%) Google Play
5 4 (1.37%) Firebase
6 3 (1.03%) IaaS
7 1 (0.34%) Cloud Computing
7 1 (0.34%) Google Cloud Platform
7 1 (0.34%) PaaS
Communications & Networking
1 23 (7.88%) HTTP
2 2 (0.68%) AMQP
2 2 (0.68%) BIG-IP
3 1 (0.34%) Ethernet
3 1 (0.34%) FlexRay
3 1 (0.34%) SAN
Database & Business Intelligence
1 28 (9.59%) NoSQL
2 24 (8.22%) MongoDB
3 15 (5.14%) Relational Database
4 10 (3.42%) Blockchain
5 8 (2.74%) PostgreSQL
6 4 (1.37%) Hadoop
6 4 (1.37%) MySQL
7 2 (0.68%) Apache Cassandra
7 2 (0.68%) Big Data
7 2 (0.68%) Couchbase
7 2 (0.68%) Data Warehouse
7 2 (0.68%) Hazelcast
7 2 (0.68%) Redis
8 1 (0.34%) Amazon Redshift
8 1 (0.34%) Apache Hive
8 1 (0.34%) Apache Zeppelin
8 1 (0.34%) BigQuery
8 1 (0.34%) Data Mining
8 1 (0.34%) HBase
8 1 (0.34%) RDBMS
Development Applications
1 41 (14.04%) Git (software)
2 27 (9.25%) Maven
3 23 (7.88%) Android Studio
3 23 (7.88%) JUnit
4 18 (6.16%) Gradle
5 16 (5.48%) Mockito
6 15 (5.14%) IntelliJ
6 15 (5.14%) Jenkins
7 13 (4.45%) Cucumber
8 9 (3.08%) git-flow
9 8 (2.74%) Eclipse
9 8 (2.74%) JIRA
10 5 (1.71%) JMeter
10 5 (1.71%) Pivotal Tracker
11 4 (1.37%) Ant
11 4 (1.37%) CircleCI
12 2 (0.68%) Bitbucket
12 2 (0.68%) Calabash
12 2 (0.68%) UI Automator
12 2 (0.68%) Xcode
General
1 36 (12.33%) Finance
2 29 (9.93%) Banking
3 14 (4.79%) Automotive
4 12 (4.11%) Retail
5 11 (3.77%) Games
5 11 (3.77%) Investment Banking
6 9 (3.08%) Telecoms
7 5 (1.71%) Retail Banking
8 2 (0.68%) Back Office
8 2 (0.68%) Publishing
9 1 (0.34%) Advertising
9 1 (0.34%) Financial Institution
9 1 (0.34%) Front Office
9 1 (0.34%) Marketing
Job Titles
1 246 (84.25%) Developer
2 125 (42.81%) Android Developer
3 104 (35.62%) Java Developer
4 43 (14.73%) Senior Developer
5 27 (9.25%) Senior Java Developer
6 17 (5.82%) Android Engineer
6 17 (5.82%) Java Scala Developer
6 17 (5.82%) Scala Developer
6 17 (5.82%) Software Engineer
7 15 (5.14%) Agile Developer
8 13 (4.45%) Agile Java Developer
8 13 (4.45%) Java Engineer
8 13 (4.45%) Senior Android Developer
9 12 (4.11%) Senior Java Scala Developer
9 12 (4.11%) Senior Scala Developer
10 10 (3.42%) iOS Android Developer
10 10 (3.42%) iOS Developer
10 10 (3.42%) Java Software Engineer
11 9 (3.08%) Java Software Developer
12 8 (2.74%) Mobile Developer
Libraries, Frameworks & Software Standards
1 96 (32.88%) RxJava
2 82 (28.08%) RESTful
3 75 (25.68%) Retrofit
4 63 (21.58%) Dagger
5 62 (21.23%) Android SDK
6 58 (19.86%) Spring
7 50 (17.12%) Web Services
8 39 (13.36%) REST
9 32 (10.96%) Spring Boot
10 29 (9.93%) HTML
11 26 (8.90%) CSS
12 25 (8.56%) Hibernate
13 23 (7.88%) Kafka
14 20 (6.85%) HTML5
14 20 (6.85%) JSON
15 17 (5.82%) SOAP
16 15 (5.14%) Elastic Stack
17 12 (4.11%) RabbitMQ
17 12 (4.11%) XML
18 11 (3.77%) Flask
Miscellaneous
1 36 (12.33%) Mobile App
2 32 (10.96%) Greenfield Project
3 30 (10.27%) User Experience
4 24 (8.22%) Computer Science
5 19 (6.51%) Fintech
6 18 (6.16%) Derivative
6 18 (6.16%) Equity Derivative
7 8 (2.74%) Mobile Payment
8 6 (2.05%) Enterprise Software
9 5 (1.71%) Algorithms
9 5 (1.71%) Analytical Skills
9 5 (1.71%) Data Structures
9 5 (1.71%) Video\Live Streaming
10 4 (1.37%) Over-the-Top Content
10 4 (1.37%) Smartphone
10 4 (1.37%) Video on Demand
11 3 (1.03%) Equities
12 2 (0.68%) Animation
12 2 (0.68%) Foreign Exchange (FX)
12 2 (0.68%) Reference Data
Operating Systems
1 157 (53.77%) Android
2 33 (11.30%) Linux
3 29 (9.93%) Apple iOS
4 16 (5.48%) Unix
5 2 (0.68%) Mac OS
6 1 (0.34%) Red Hat Enterprise Linux
6 1 (0.34%) Windows
Processes & Methodologies
1 164 (56.16%) Agile Software Development
2 141 (48.29%) Android Development
3 139 (47.60%) TDD
4 69 (23.63%) Microservices
5 61 (20.89%) BDD
6 57 (19.52%) Continuous Integration
7 48 (16.44%) Software Engineering
8 47 (16.10%) DevOps
9 34 (11.64%) Continuous Delivery
9 34 (11.64%) Test Automation
10 33 (11.30%) Pair Programming
11 32 (10.96%) Open Source
12 31 (10.62%) Functional Programming
12 31 (10.62%) Mobile Development
13 30 (10.27%) Kanban
13 30 (10.27%) OO
13 30 (10.27%) OOP
14 29 (9.93%) Scrum
15 20 (6.85%) Performance Optimisation
16 19 (6.51%) Multithreading
Programming Languages
1 207 (70.89%) Java
2 66 (22.60%) Scala
3 61 (20.89%) JavaScript
4 59 (20.21%) Java 8
5 36 (12.33%) SQL
6 21 (7.19%) Python
7 19 (6.51%) Bash Shell
8 18 (6.16%) Groovy
9 16 (5.48%) Shell Script
10 14 (4.79%) Apple Swift
11 10 (3.42%) Objective-C
12 8 (2.74%) Clojure
13 7 (2.40%) C++
14 6 (2.05%) C
14 6 (2.05%) Go
15 4 (1.37%) R
16 3 (1.03%) C#
16 3 (1.03%) ES6
17 1 (0.34%) Dart
17 1 (0.34%) Elixir
Qualifications
1 23 (7.88%) Degree
2 15 (5.14%) Computer Science Degree
3 3 (1.03%) Master's Degree
4 1 (0.34%) PhD
Quality Assurance & Compliance
1 15 (5.14%) QA
2 4 (1.37%) PCI DSS
3 1 (0.34%) GDPR
3 1 (0.34%) SLA
System Software
1 26 (8.90%) Docker
2 2 (0.68%) Varnish
Systems Management
1 16 (5.48%) Kubernetes
2 15 (5.14%) Grafana
2 15 (5.14%) Kibana
2 15 (5.14%) logstash
3 3 (1.03%) Opscode Chef
4 2 (0.68%) Ansible
4 2 (0.68%) Mesos
4 2 (0.68%) Puppet
4 2 (0.68%) Terraform
5 1 (0.34%) Marathon
Vendors
1 20 (6.85%) Google
2 16 (5.48%) Splunk
3 15 (5.14%) AppDynamics
4 5 (1.71%) Xamarin
5 4 (1.37%) Samsung
6 2 (0.68%) F5
6 2 (0.68%) Microsoft
7 1 (0.34%) Appcelerator
7 1 (0.34%) Capita
7 1 (0.34%) Kony
7 1 (0.34%) Oracle
7 1 (0.34%) QNX