Backend Developer

Anyone AI

. Design and implement multi-file coding tasks across bug fixing, feature development, refactoring, and testing .

Posted 11/9/2026part-timeRemote • PeruMid-LevelSenior💰 $45 - $80 per hourWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates advanced proficiency in Python and JavaScript/TypeScript, with experience in backend or full-stack development. Capable of delivering robust test coverage and conducting thorough code reviews while ensuring alignment between specifications and code outputs.

Highest-signal resume keywords

Python ProficiencyJavaScript/TypeScript ProficiencyExperience With Testing FrameworksCode Review ExperienceProduction Systems Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Software EngineeringDebugging Large CodebasesMulti-File Coding TasksFeature DevelopmentRefactoringUnit TestingIntegration TestingProduction MigrationsNatural-Language SpecificationsEdge Case Identification

Soft Skills

Advanced Written Proficiency in EnglishPeer Review Feedback

Tools & Technologies

PytestJestJUnitXUnitGo Testing

Industry Keywords

Backend DevelopmentFull-Stack DevelopmentProduction Systems

Tech Stack

Tools & technologies

JavaJavaScriptJestJUnitPythonTypeScriptGo

About the role

Key responsibilities & impact

Design and implement multi-file coding tasks across bug fixing, feature development, refactoring, and testing
Write clear natural-language specifications and reference implementations
Develop and extend unit and integration test suites
Review peer-generated tasks for correctness, clarity, and realism
Identify edge cases, ambiguities, and potential failure modes
Ensure alignment between specifications, code, and expected outputs
Create complex coding scenarios and review peer submissions for quality and accuracy
Deliver production-realistic coding tasks, complete reference implementations, robust test coverage and validation artifacts, and structured peer-review feedback

Requirements

What you’ll need

Advanced professional written proficiency in English
3–7 years of professional software engineering experience
Strong proficiency in Python and JavaScript/TypeScript; working knowledge of Java, C#, or Go
Backend or full-stack development experience in production systems
Experience with testing frameworks (e.g., pytest, Jest, JUnit, xUnit, Go testing)
Proven ability to debug and navigate large, multi-file codebases
Experience with code reviews, refactoring, and production migrations

Benefits

Comp & perks

Part-time, project-based expert evaluation work
Consultants control their own schedule
Consultants may simultaneously provide services to other vendors/employers, subject to those vendors’ allowances