Kotlin Coding Specialist – Freelance AI Trainer

Invisible Technologies

. Use real-world engineering scenarios such as bug reports and feature requests in Git repositories to produce clean, efficient, idiomatic Kotlin solutions .

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

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Kotlin and modern Android development, with a strong focus on producing clean, efficient code and implementing best practices. Capable of evaluating AI-generated code and ensuring technical correctness while maintaining clear communication of technical decisions.

Highest-signal resume keywords

Kotlin ExpertiseAndroid DevelopmentJetpack ComposeKotlin CoroutinesProduction-Level Application Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

KotlinAndroid DevelopmentJetpack LibrariesRoomWorkManagerDatastoreViewModelHiltOkHttpRetrofit

Soft Skills

Clear CommunicationStructured Explanation

Tools & Technologies

Build.gradleCameraXExoPlayerMedia3Coil

Industry Keywords

Modern Android DevelopmentCoding ConventionsDesign PatternsTechnical CorrectnessMaintainability

Tech Stack

Tools & technologies

AndroidGradleKotlin

About the role

Key responsibilities & impact

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

Requirements

What you’ll need

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

Benefits

Comp & perks

Pay range of $35+ per hour, with the exact rate determined after evaluating experience, expertise, and geographic location
Contractor supplies a secure computer and high-speed internet
Company-sponsored benefits such as health insurance and PTO do not apply