Kotlin Coding Specialist – Freelance AI Trainer

Invisible Technologies

. Take real-world engineering scenarios, such as bug reports or feature requests in a Git repository, and produce clean, efficient, idiomatic Kotlin solutions .

Posted 11/4/2026contractRemote • PolandMid-LevelSenior💰 $35 per hourWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Android software development with a strong focus on producing clean, efficient Kotlin solutions and implementing modern Android design patterns. Proficient in evaluating and optimizing code while ensuring maintainability and technical correctness.

Highest-signal resume keywords

Android Software DevelopmentKotlin Application DevelopmentJetpack ComposeKotlin CoroutinesDependency Management

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

KotlinAndroid DevelopmentCode OptimizationCode DocumentationBug FixingFeature ImplementationProduction-Level ApplicationsModern Android PracticesNetworking LibrariesMultimedia Tools

Soft Skills

Clear CommunicationStructured Explanation

Tools & Technologies

Jetpack LibrariesRoomWorkManagerDatastoreViewModelHiltOkHttpRetrofitCoilCameraX

Industry Keywords

Android Design PatternsCoding ConventionsTechnical CorrectnessMaintainabilityAI Code Evaluation

Tech Stack

Tools & technologies

AndroidGradleKotlin

About the role

Key responsibilities & impact

Take real-world engineering scenarios, such as bug reports or feature requests in a Git repository, and produce clean, efficient, idiomatic Kotlin solutions
Create high-quality code patches reflecting modern Android development practices
Evaluate AI-generated code and correct errors
Implement optimized Kotlin solutions
Document best practices demonstrating modern Android design patterns and coding conventions
Ensure technical correctness, maintainability, and clarity of code

Requirements

What you’ll need

Strong background in Android software development
Demonstrable experience building and maintaining production-level Kotlin applications
Hands-on experience with modern Android and Kotlin development
Experience with Jetpack Compose, Kotlin Coroutines, and Jetpack libraries including Room, WorkManager, Datastore, ViewModel, and Hilt
Familiarity with build.gradle configuration and dependency management
Familiarity with networking libraries such as OkHttp, Retrofit, and Coil
Clear, structured communication and ability to explain technical decisions
Android multimedia tools such as CameraX, ExoPlayer, and Media3 are a plus

Benefits

Comp & perks

$35+ per hour pay range, with exact rate based on experience, expertise, and geographic location
Contractor arrangement
Remote work
Company-sponsored health insurance and PTO do not apply
Secure computer and high-speed internet supplied by the contractor