Brazilian Portuguese Linguistic Expert at Mercor

Brazilian Portuguese Linguistic Expert | $40/hr | Part-time | Remote

Mercor is hiring Brazilian Portuguese Linguistic Experts for a part-time AI research project run in partnership with a leading research lab. The work focuses on evaluating how well a large language model (LLM) performs on Brazilian Portuguese tasks and on curating high-quality Portuguese linguistic data to train and improve the model.

What the work involves

• Evaluating the quality and accuracy of LLM-generated Portuguese text across use cases such as translation, summarization, dialogue, and grammar correction.
• Editing, refining, or rewriting Portuguese content to meet linguistic and cultural standards for Brazil.
• Annotating Portuguese text for grammatical, syntactic, and semantic features.
• Identifying model errors and language gaps, and collaborating with AI researchers to improve LLM performance.
• Providing detailed linguistic feedback and analysis to guide ongoing model training.

Who should apply

• Native or near-native fluency in Brazilian Portuguese, with a strong command of grammar, syntax, and stylistics.
• Professional experience in translation, editing, linguistic annotation, or NLP data work in Portuguese.
• Understanding of Brazilian Portuguese nuances, regional variations, register, and context-appropriate usage, including how it differs from European Portuguese.
• Professional fluency in English.
• Interest in AI and LLM-driven language technologies (preferred, not required).
• Attention to detail and the ability to spot subtle errors or unnatural phrasing.
• Clear communication skills and experience working in distributed, remote teams.

Pay, schedule and location

$40/hr. This is a part-time, fully remote role.