Full-Stack Developer - AI Trainer (Portugal)
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Before you apply
LocationPortugal
Work moderemote
Typecontract
SeniorityMid
Experience3–7 yrs
DepartmentSoftware Engineering
Company size1,001–5,000 people
PostedMay 4, 2026 · 6mo ago
Verified live3d ago
May no longer be actively hiring
Posted by the company on May 4, 202669% of this company's open roles have been listed for 90+ daysDescription is very short or shared across several roles
At a glanceSummarised by Seekless from the posting.
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
Skills
Python
JavaScript
TypeScript
Java
C#
Go
pytest
Jest
JUnit
xUnit
Go testing
About the role
Anyone AI is recruiting skilled Full-Stack Developers to work on a project with a leading AI lab.
Qualifications:
•
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
Engagement: Part-time, project-based expert evaluation work
Work Type: Remote
Contributors will design and evaluate realistic software engineering tasks, including bug resolution, feature implementation, refactoring/migration, and test generation. Work includes both creating complex coding scenarios and reviewing peer submissions for quality and accuracy.
This is a project-based consultant role. Consultants will be paid on a per-project basis; hourly rates are estimates based on anticipated completion time. Consultants control their own schedule, provide their own tools, and may simultaneously provide services to other vendors/employers (subject to those vendors’ allowances).
Responsibilities:
Contributors will:
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Design and implement multi-file coding tasks across bug fixing, feature development, refactoring, and testing
•
Write clear natural-language specifications and reference implementations
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Develop and extend unit and integration test suites
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Review peer-generated tasks for correctness, clarity, and realism
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Identify edge cases, ambiguities, and potential failure modes
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Ensure alignment between specifications, code, and expected outputs
Expected Outcomes:
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High-quality, production-realistic coding tasks
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Complete and correct reference implementations
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Robust test coverage and validation artifacts
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Structured, actionable peer review feedback