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Backend Developer - AI Trainer

Anyone AINetherlands
Remote Part-time

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Experience Level

Experience

Qualifications

To be considered for this role, candidates should meet the following qualifications:Proficiency in English, both written and verbal3 to 7 years of experience in software engineeringStrong skills in Python and JavaScript/TypeScript, with basic knowledge of Java, C#, or GoExperience in backend or full-stack development in live systemsFamiliarity with testing frameworks, such as pytest, Jest, JUnit, or Go testingAbility to debug and understand large, multi-file codebasesExperience with code reviews and production migrations

About the job

Anyone AI is seeking a Backend Developer to work on a project in partnership with a leading AI laboratory. This remote, part-time role centers on expert evaluation and hands-on software engineering, contributing directly to the development of advanced AI technologies.

Role overview

This position involves designing and evaluating realistic software engineering tasks. Typical activities include debugging, building new features, refactoring or migrating code, and generating tests. The work also requires creating complex coding scenarios and reviewing the work of peers to ensure technical accuracy and clarity.

What you will do

  • Create and implement multi-file coding tasks, including bug fixes, feature development, refactoring, and testing
  • Write clear, natural-language specifications and corresponding reference implementations
  • Develop and improve unit and integration test suites
  • Review tasks created by peers for accuracy, clarity, and realism
  • Identify edge cases, ambiguities, and possible failure points
  • Ensure alignment between specifications, code, and expected results

Requirements

  • Fluent English and strong written communication skills
  • 3 to 7 years of professional experience in software engineering
  • Deep knowledge of Python and JavaScript or TypeScript, plus familiarity with Java, C#, or Go
  • Background in backend or full-stack development in production settings
  • Experience with testing frameworks such as pytest, Jest, JUnit, xUnit, or Go testing
  • Strong debugging abilities and comfort working in large, multi-file codebases
  • Experience with code reviews, refactoring, and managing production migrations

Engagement details

  • Part-time, project-based
  • Remote work

Expected outcomes

  • Deliver high-quality, production-ready coding solutions

About Anyone AI

Anyone AI is at the forefront of AI innovation, dedicated to pushing the boundaries of technology and enhancing the capabilities of artificial intelligence. As a company, we value creativity, collaboration, and continuous learning, striving to create a positive impact in the tech industry.

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