PROGRAMMING SKILLS

Android development in Kotlin test for hiring

See how candidates reason through Kotlin snippets and Android app scenarios.

10 minutes
15 questions
Intermediate
Multiple choice
Questions in English
Phone and desktop

Use this test free See the question formats

The short answer

The Android Development Using Kotlin test is a 10-minute, intermediate assessment for Android developers, mobile application developers, Kotlin programmers on app teams, and engineers who review or integrate Android code. It uses compact Kotlin snippets and app scenarios to assess concurrency and architecture, UI state, networking and local data, plus testing and debugging.

What it measures

Practical Android development in Kotlin: concurrency and architecture, UI state, networking and local data, and testing and debugging.

Kotlin and app architecture

Covers coroutines and how app structure shapes Kotlin code.

UI and interaction

Covers UI state and screens built with Jetpack Compose.

Networking and data

Covers calling servers and storing data on the device.

Testing, debugging and delivery

Covers testing, debugging and shipping an Android build.

Question formats

Multiple choice

The candidate: Reads a short situation, table or statement and picks the right answer, or every right answer.

You see: Whether the candidate knows the material well enough to apply it, not just recognize it.

15 questions in 10 minutes, served one at a time.

Roles this test fits

Android developers and engineers, mobile application developers, Kotlin programmers working on apps, software engineers on mobile teams, and technical roles that review or integrate Android code.

A focused view of practical Android work

Look beyond resume claims
See candidates interpret Kotlin snippets and app scenarios, including what code does, what goes wrong and which fix fits.
Screens built with Jetpack Compose
UI questions are set in screens built with Jetpack Compose, so you see how candidates reason about UI state in the toolkit the test is written for.
Version-aware questions
Each question relies on current, stable platform behavior and states any version that matters, so the result reflects working knowledge rather than memory of one release.

What you get for each candidate

Example report (fictional data)Android Development Using Kotlin

73%Percentile 51. Benchmark: HireValid candidates, n = 990

Kotlin and app architecture63%

UI and interaction82%

Networking and data65%

Testing, debugging and delivery80%

Integrity ScoreHigh confidence

Stayed on the test tab throughout
No pasted answers
Answered at a steady pace

Scores, profiles and integrity signals are evidence for you to review alongside an interview, never an automatic decision.

Use this test free

Consistent test conditions

Each candidate gets a different set of questions from large pools. Questions appear in a different order for each attempt, and answer options are shuffled. The browser receives one question at a time, and candidates cannot go back to earlier questions; answer keys stay on HireValid’s servers. Timing runs on the server, so reloading returns the same question with only the remaining time. Question text cannot be copied or selected, and blocked copy attempts are recorded. Invitation links are personal and expire, and a finished test cannot be taken again. HireValid summarizes signals such as time away from the test tab, pastes into answers and answers faster than a question can be read in an Integrity Score and evidence timeline for employer review. With candidate consent, employers can add webcam photos at random moments.

How we prevent AI cheating · Integrity signals

Use the score as a review signal

Treat the score as evidence to review, not a hiring decision. Pair it with a work sample that asks candidates to reason through an Android app change, then use a structured interview to discuss their approach. For broader guidance, read our pre-employment testing guide, candidate-friendly hiring guide and how we build our tests.

Follow up with practical questions

A screen’s displayed state no longer matches the data after an asynchronous update. How would you investigate and address it?
Listen for a clear account of UI state, concurrency and app structure, including how the candidate would trace the issue.
An app needs to load server data and keep useful information on the device. How would you plan the data flow?
Listen for a practical discussion of server calls, local storage and how the pieces fit the app’s architecture.
A change works during development but causes a problem in a build. How would you narrow down the cause?
Listen for specific testing and debugging steps and a considered path to shipping a corrected build.

Understand scoring and benchmarks

Fairness and accommodations

Questions use short code with neutral names for variables and screens, plain US English, and app scenarios such as task lists, bookings and notes that need no local knowledge, money or idioms. Each question relies on current, stable platform behavior and states any version that matters, so the test rewards working knowledge rather than memory of a single release. Code is kept short and every candidate gets the same 40 seconds per question.

You can give any candidate extra time as an accommodation. Results are evidence for a person to review, never an automatic decision.

Provisional: reliability is reported once 200 candidates have completed it.

Read our fairness approach

Test details

A short, timed test of the everyday work of building Android apps in Kotlin. Candidates read compact Kotlin snippets and app scenarios and decide what the code does, what goes wrong and which fix is right. The questions cover coroutines and app structure, screens built with Jetpack Compose, calling servers and storing data on the device, and testing, debugging and shipping a build.

Questions are in English.
No aids are needed.
Each question is answered once, in order, with no going back.
4 practice questions, 3 minutes, before the timed test.

Android, Kotlin, Jetpack Compose, AndroidX, Room, Retrofit, OkHttp, WorkManager, JUnit, Espresso are trademarks of their owners. HireValid is not affiliated with or endorsed by them.

Frequently asked questions

How does the Android Development Using Kotlin test keep questions fair?+

Questions use short code with neutral variable and screen names, plain US English, and app scenarios such as task lists, bookings and notes. They need no local knowledge, money context or idioms, and every candidate gets the same 40 seconds per question.

What can candidates use during the Android Development Using Kotlin test?+

No aids are allowed. The test has 15 multiple-choice questions and takes 10 minutes. Candidates cannot go back to an earlier question, so they should make each response before moving on.

What does the Android Development Using Kotlin practice set include?+

The practice set contains 4 questions and takes 3 minutes. It shows candidates the compact Kotlin snippet and app scenario format before the 10-minute test, so the first timed question is not their first look at the layout.

Which candidates suit the intermediate Android Development Using Kotlin test?+

It is intended for Android developers and engineers, mobile application developers, Kotlin programmers working on apps, software engineers on mobile teams, and technical roles that review or integrate Android code at an intermediate level.