Kotlin Coding Specialist – Freelance AI Trainer

Invisible Technologies

. Evaluate AI-generated code and correct errors .

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

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Kotlin and modern Android development, with a focus on creating efficient, maintainable code and applying best practices in software engineering. Capable of evaluating AI-generated code and supporting the development of next-generation AI developer assistants.

Highest-signal resume keywords

Kotlin ExpertiseModern Android DevelopmentJetpack ComposeKotlin CoroutinesAndroid Software Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

KotlinAndroid DevelopmentCode OptimizationBug FixingFeature ImplementationTechnical DocumentationProduction-Level Application DevelopmentBuild.gradle ConfigurationDependency ManagementNetworking Libraries

Soft Skills

Clear CommunicationStructured Explanation

Tools & Technologies

Jetpack LibrariesRoomWorkManagerDatastoreViewModelHiltOkHttpRetrofitCoilCameraX

Industry Keywords

AI DevelopmentSoftware EngineeringCoding ConventionsDesign PatternsTechnical Correctness

Tech Stack

Tools & technologies

AndroidGradleKotlin

About the role

Key responsibilities & impact

Evaluate AI-generated code and correct errors
Implement optimized, clean, efficient, and idiomatic Kotlin solutions for real-world engineering scenarios
Create high-quality code patches for bug reports and feature requests in Git repositories
Apply modern Android development practices and design patterns
Ensure technical correctness, maintainability, and clarity
Document best practices, coding conventions, and technical decisions
Support training data for next-generation AI developer assistants

Requirements

What you’ll need

Kotlin expertise
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 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 experience with CameraX, ExoPlayer, or Media3 is a plus

Benefits

Comp & perks

Pay range of $35+ per hour, with the exact rate determined after evaluating experience, expertise, and geographic location
As a contractor, you’ll supply a secure computer and high-speed internet