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Backend Developer (Kotlin/Java, Android APIs)

DataAnnotation

full-remotefreelancebackend Washington, United States 4 days ago via LinkedIn
50+ USD/daily

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Tech Stack

KotlinJavaJavaScriptTypeScriptPythonCC#C++ReactGoSwiftAndroid

About the role

Role Overview

Join DataAnnotation's coding team as a Backend Developer to contribute to AI system development. Work on diverse programming tasks with flexibility in scheduling and project selection, either as a side gig or primary focus.

Responsibilities

  • Design and solve diverse coding problems used to train AI systems, with emphasis on Android development
  • Write clear, high-quality code snippets and detailed explanations
  • Evaluate AI-generated code for accuracy, performance, and clarity
  • Provide feedback that shapes the next generation of AI models

Requirements

  • Fluency in English (native or bilingual level)
  • Proficiency in at least one programming language: JavaScript, TypeScript, Python, C, C#, C++, React, Go, Java, or Swift
  • Excellent writing and grammar skills
  • Bachelor's degree (completed or in progress)

Preferred Qualifications

  • Kotlin experience (strongly preferred)
  • Previous experience as a Software Developer, Coder, Software Engineer, or Programmer

Benefits

  • Fully remote: work from anywhere in US, Canada, UK, Ireland, Australia, and New Zealand
  • Flexible schedule: choose projects and when you work
  • Competitive pay: projects paid hourly, starting at $50+ USD/hour with opportunities for higher-paying projects
  • Impact: shape the future of AI technologies

Process

Sign up for an account, complete a short assessment (serves as interview), and if you pass, paid work becomes available through the platform.

About DataAnnotation

DataAnnotation is an AI development platform that leverages a community of over 100,000 programmers to help create and refine cutting-edge AI systems. The platform connects engineers with challenging coding tasks that directly contribute to training and improving intelligent systems.

Scraped 3/30/2026

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