Portuguese Language Specialist – Freelance AI Trainer

Invisible Technologies

. Converse with language models on language scenarios .

Posted 11/5/2026contractRemote • PortugalMid-LevelSenior💰 $6 - $65 per hourWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Portuguese language and linguistics, including phonetics, morphology, syntax, semantics, and sociolinguistics. Capable of analyzing language structures and providing clear communication on linguistic concepts and model evaluations.

Highest-signal resume keywords

Portuguese Language ExpertiseLinguistic AnalysisPhonetics and MorphologyMaster’s or PhD in LinguisticsMetacognitive Communication

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Verb Conjugation AnalysisNoun-Adjective AgreementSentence Structure AnalysisWord Order AnalysisAccentuation AnalysisColloquial Expressions AnalysisPrompt EngineeringEvaluation Metrics ImprovementError Trace CaptureModel Failure Documentation

Soft Skills

Clear CommunicationMetacognitive Skills

Tools & Technologies

Secure ComputerHigh-Speed Internet

Certifications & Qualifications

Master’s Degree in Portuguese LanguagePhD in Linguistics

Industry Keywords

SociolinguisticsLanguage ModelsLogical SoundnessFactual AccuracyTeaching ExperiencePeer-Reviewed Publications

About the role

Key responsibilities & impact

Converse with language models on language scenarios
Verify factual accuracy and logical soundness
Capture reproducible error traces
Document model failure modes
Suggest improvements to prompt engineering and evaluation metrics
Challenge advanced language models on Portuguese language topics to improve model reasoning

Requirements

What you’ll need

Portuguese (Portugal) language expertise
Expertise in Portuguese phonetics, morphology, syntax, semantics, pragmatics, and sociolinguistics
Ability to analyze verb conjugation, noun-adjective agreement, sentence structure, word order, accentuation, and colloquial expressions
A master’s or PhD in Portuguese language, linguistics, or a closely related field is ideal
Peer-reviewed publications, teaching experience, or hands-on linguistic analysis projects signal fit
Clear, metacognitive communication and ability to “show your work”
Secure computer and high-speed internet as a contractor

Benefits

Comp & perks

None offered; company-sponsored health insurance and PTO do not apply to contractors
Contractor supplies a secure computer
Contractor supplies high-speed internet