CodeSubmit Library

Kotlin Developer Assessment

Evaluate Kotlin developers with real-world assessments that mirror actual Android development workflows. Our Kotlin assessments cover modern Android development patterns, Kotlin-specific features, and cross-platform development with Kotlin Multiplatform.

Test candidates on coroutines, null safety, extension functions, and other Kotlin language features that make it superior to Java for Android development.

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Trusted by leading organizations worldwide.

Why Kotlin Assessment Matters

Kotlin is now Google's preferred language for Android development, offering improved safety, interoperability, and developer productivity. Our assessments help you identify developers who can leverage Kotlin's modern features effectively.

Evaluate expertise in Kotlin coroutines, data classes, sealed classes, and other language features that enable robust Android applications.

Ktor

1+ Kotlin frameworks available on CodeSubmit

Git Tree Review Flow

How CodeSubmit turns a repo into a review map

CodeSubmit does not jump from a Kotlin take-home straight to a thumbs-up or thumbs-down. The review flow starts by mapping the full git tree, then filtering obvious generated and vendor noise so reviewers get a fair file map before deeper review begins.

File listings alone do not decide anything. The tree is the map, then reviewers read the README, manifests, and top-modified files that explain how the submission works before they turn it into a candidate-friendly take-home review and a sharper CodePair follow-up.

Repo Review FlowCandidate-Friendly Review

Full repo map first

git tree to review map

1src/

2 core/handler

3 services/domain

4tests/integration

5README.md

6docker-compose.yml

Fair-review baseline

File listings are discovery, not evidence. Generated and vendor noise gets filtered so the review starts from candidate-authored work.

Root files read early

README.mddocker-compose.yml.env.example

Review input

full git tree

Review input

reviewable files

Review input

must-inspect files

Map the tracked repo

The first pass builds a real file map so the review starts from the submitted project, not a stereotype about the stack.

Filter to reviewable files

Noise gets filtered out early so reviewers spend time on candidate-authored work instead of generated scaffolding.

Anchor to the root files

README and top-level manifests explain how the project is meant to work before deeper inspection begins.

Carry it into follow-up

That repo map turns into concrete review notes, likely test files, and live follow-up prompts for the hiring team.

Report outputs

repo overviewkey filesrisk hotspotsfollow-up prompts

The result is a cleaner handoff for hiring teams: concrete paths to inspect, stronger AI summaries, and live follow-up topics that stay anchored to the repo.

git treereviewable filesREADME + manifeststop modified filesCodePair follow-up

Complete Your Technical Assessment

Pair Take-Home Tests with Live Coding

Combine Kotlin take-home challenges with live CodePair sessions. Watch candidates walk through their solution, ask follow-up questions, and see how they handle real-time problem solving.

Perfect for assessing both independent work quality and collaborative coding skills in a single hiring pipeline.

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Authentic tasks, not algorithm puzzles.

Take-Home Coding Challenges

Our extensive library of practical coding challenges provides an accurate assessment of candidate programming abilities while delivering a respectful and engaging interview experience.

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Authentic engineering challenges:

Coding assessments that mirror real development work, helping top engineering teams recruit more effectively, intelligently, and fairly.

Comprehensive challenge library:

Select from hundreds of programming challenges spanning junior to senior architect levels, supporting all major languages and frameworks -- or create your own custom challenges.