Kotlin interview questions and online tests were prepared by our specialized team of professionals. We have a range of Kotlin coding tests for junior, middle, and senior-level developers.
DevSkiller Kotlin interview questions are powered by the RealLifeTesting™ methodology. This methodology is completely unique because it tests the candidate’s skills through real-world problems rather than algorithmic puzzles or riddles. Finding your next Kotlin developer is easy with DevSkiller and our Kotlin online tests.
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Java programming interview questions
assessing knowledge of Android
assessing knowledge of Android, Kotlin
Android | Kotlin | Compass - Implement the compass functionality in the location-based application.
assessing knowledge of Android
assessing knowledge of Android, Kotlin
Android | Kotlin | RecyclerView | To-do List - Create a simple to-do list where each item is a list item in the RecyclerView.
assessing knowledge of Android
assessing knowledge of Android, Kotlin
Android | Kotlin, C | JNI Magic - Implement the JNI functionality that enables you to call the Base::getBaseComponent method having a Client instance only.
assessing knowledge of Android
assessing knowledge of Android, Kotlin
Android | Kotlin | Notepad app - Complete basic functionalities of a note-taking application using RecyclerView.
assessing knowledge of Android, Kotlin
Android | Kotlin | Bitmap manipulation - Complete image manipulation application that performs some operations on the selected image.
assessing knowledge of Android,
assesing knowledge of Android, Kotlin and Java
Android | Kotlin | Employees Application - Complete app that displays a list of people responsible for different areas in the company like IT or Payroll.
assessing knowledge of Kotlin
Kotlin | Spring Boot | Money Heist - Implement two methods according to the requirements to get all the necessary information from the database.
assessing knowledge of Kotlin
Kotlin | Fisherman`s app - Implement a method for filtering data.
assessing knowledge of Kotlin
Kotlin | Vehicle Register - Implement a mechanism for selling and buying vehicles.
assessing knowledge of Kotlin
Kotlin | Precomputing Search Engine - Implement the optimized engine for the product search, based on the precomputation task to precompute the results for any set of the options.
assessing knowledge of Android
Android | Vibrations API - Implement a method to play a fancy melody via the embedded haptic device to indicate the feature switch has been toggled.
assessing knowledge of Java, Spring Boot
Java | Spring Boot, Kotlin | Orders microservice - Implement a backbone of the RESTful miscroservice.
assessing knowledge of Android
Android | Kotlin | ConstraintLayout Animation - Implement layout elements animations using ConstraintLayout API.
assessing knowledge of Android
Android | Kotlin | Image Fetch (KitKat + TLSv1.2) - Adjust the MainActivity implementation so that the OkHttp client supports TLS 1.2, even if it has been disabled by the Operating System.
assessing knowledge of Kotlin
Kotlin | Collections API - Implement an application that processes orders data.
assessing knowledge of Android
Android | OpenGL ES Demo - The objective of this task is to check the candidate's knowledge of GLSL ES 100.
assessing knowledge of Kotlin
Kotlin | Vehicle register - Implement a mechanism for buying and selling vehicles.
assessing knowledge of Kotlin
Kotlin | Acme Vending Machines - Implement a simple vending machine application.
assessing knowledge of Kotlin
Kotlin | Orders Analyzer | Find an average ordered quantity for every weekday - Implement a method that will analyze orders dataset and return a map with total ordered quantity of a product for every weekday
iOS | Swift | Conference App Senior - Implement a network service that is used to interact with the server.
Android | Async call from native to Java via JNI - Provide the missing JNI part of the native-Java communication combo that fulfills the certain requirements.
assessing knowledge of Kotlin, Android
Android | Kotlin | Async call from native to Java via JNI - Provide the missing JNI part of the native-Java communication combo that fulfills the certain requirements.
assessing knowledge of Kotlin
Kotlin | Orders Analyzer | Find an average order value for every weekday - Implement a method that will analyze orders dataset and return a map with an average total order value
assessing knowledge of Kotlin
Kotlin | Orders Analyzer | Calculate the total ordered quantity for every weekday - Implement a method that will analyze orders dataset and return a map with the total ordered quantity for every weekday
assessing knowledge of Kotlin
Kotlin | Flight manager app | Seats reservation and flights analysis - Implement missing features of the flights' data management application like seats reservation and flights analysis.
DevSkiller Kotlin coding tests are powered by the RealLifeTesting™ methodology. The methodology works by asking candidates to answer questions and solve problems that they would have to deal with in the real world. Gone are the days of reciting old code or solving academic algorithmic puzzles. This method of testing will provide true and objective insight into your candidate’s skills. Learn more about your candidate’s coding skills, critical thinking, and time-management skills with Kotlin interview questions and online tests.
Kotlin was first released in February 2016. It is an open-source statically typed programming language that targets JVM, Android, JavaScript, and Native. Kotlin is a concise programming language and has both object-oriented and functional constructs. It can be used for any kind of development – server-side, client-side, and Android. The programming language is inspired by other existing languages such as Java, C#, JavaScript, Scala, and Groovy.
Kotlin is one of the most in-demand languages today. Java and Kotlin’s interoperability means that a background in the popular Java will serve your Kotlin candidates well. It’s also important to verify the candidate’s knowledge of Kotlin’s safety features, most notably their understanding of ‘null-safety’. Finally, any previous work in developing Android mobile or web applications is a good sign for your Kotlin developer candidates.
Do you want to build your own custom tests? No problem. The DevSkiller task wizard lets you build custom tests using your own codebase. You can select the languages, skills, and technologies you want to test. Then, choose the scope, difficulty, and test duration all while observing in real-time. Finding your next Kotlin developer has never been easier with DevSkiller and our Kotlin coding tests and interview questions.
Interested in sending your first Kotlin coding test invitation but still not 100% convinced? That’s fine, we understand that making any financial commitment for your company is a big decision. Instead of listening to us, why not listen to what one of our many satisfied customers has to say:
CodeValue:
CodeValue is a dynamic software development, UI/UX design, and consulting services firm. Before switching to DevSkiller, their screening process consisted of a phone interview with HR followed up with a technical phone interview then a test and technical interview. After that, there was still another interview with HR and the hiring manager before an offer was made. The biggest obstacle they wanted to overcome was the number of unnecessary technical interviews that took place. Once CodeValue successfully implemented DevSkiller, they were able to reduce the time to hire by approximately 50% while hiring 2.8x more developers from the same candidate pool.
“DevSkiller is easy to use and friendly.” – Olga Berger – Lead recruiter & sourcing specialist at CodeValue
Plagiarism is taken very seriously at DevSkiller and as such, we have a number of robust anti-plagiarism tools in place to ensure all test results are accurate. Screen recording to check if the candidate is looking at a different screen when undertaking a test. We also use a range of social listening tools, check the candidate’s IP address, and use live pair notifications. Our plagiarism detector checks the candidate’s entered code, question duration, and the way each question was answered. All of the answers are automatically cross-referenced with every answer that has ever been logged in our system. If there is a match between your candidate’s answer with another that has been logged, then it will be flagged and we can categorically confirm that the answer was plagiarized.
The duration of tests is flexible. We have a number of pre-defined Kotlin coding tests that have a set duration. Alternatively, you can opt to write your own tests or set the time limit of individual questions within a test.
We made DevSkiller as simple and as automated as it can possibly be. Our ready-to-use tests prepared by IT experts allow non-technical users to verify the technical skills of the candidates screened. If you have a technical person on-site, you can prepare a test from scratch.
Sending your first Kotlin coding test can be done in as little as five minutes. Our wide selection of junior, middle, and senior-level Kotlin online tests means that you can start testing your candidates right after you set up your account.
