Portuguese Language Specialist – Freelance AI Trainer

Invisible Technologies

. Converse with language models on language scenarios .

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

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in Portuguese linguistics, including phonetics, morphology, syntax, semantics, and pragmatics, while effectively communicating complex concepts and evaluating language structures. Proven ability to document and analyze model performance and suggest improvements in prompt engineering.

Highest-signal resume keywords

Portuguese Language ExpertisePhonetics ExpertiseMorphology ExpertiseSyntax ExpertiseMaster's Or PhD In Linguistics

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Language Model EvaluationError Trace CaptureVerb Conjugation EvaluationNoun-Adjective Agreement EvaluationSentence Structure AnalysisWord Order EvaluationAccentuation AnalysisColloquial Expressions Evaluation

Soft Skills

Clear CommunicationMetacognitive Communication

Industry Keywords

SociolinguisticsLinguistic AnalysisTeaching 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
Suggest improvements to prompt engineering and evaluation metrics
Document model failure modes to harden model reasoning

Requirements

What you’ll need

Portuguese (Brazil) language expertise
Expertise in phonetics, morphology, syntax, semantics, pragmatics, and sociolinguistics of Portuguese
Ability to evaluate verb conjugation, noun-adjective agreement, sentence structure, word order, accentuation, and colloquial expressions
Clear, metacognitive communication (“showing your work”)
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

Benefits

Comp & perks

As a contractor you’ll supply a secure computer and high‑speed internet
Company-sponsored benefits such as health insurance and PTO do not apply