Brazilian Portuguese Linguistic Expert

Confidential; United States; Remote; USD 34,000 - 69,000; Full time

Job summary

Confidential is seeking experienced Brazilian Portuguese Linguistic Experts for a 100% remote contract role focused on evaluating LLM performance in Brazilian Portuguese tasks and curating high-quality Portuguese linguistic data to improve model understanding and generation capabilities.

You will evaluate translations, summaries, dialogues, and grammar corrections, edit and refine content for Brazilian Portuguese, annotate data, and provide detailed linguistic feedback to guide model training

Qualifications

• Native or near-native fluency in Brazilian Portuguese.
• Experience in translation, editing, linguistic annotation, or NLP data work in Portuguese.
• Professional fluency in English.

Responsibilities

• Evaluate the quality and accuracy of LLM-generated Portuguese text across use cases.
• Edit, refine, or rewrite Portuguese content for Brazil.
• Annotate Portuguese text for grammatical, syntactic, and semantic features.
• Identify model errors and language gaps and collaborate with AI researchers to improve LLM performance.
• Provide linguistic feedback to guide model training efforts.

Skills

Brazilian Portuguese

Linguistic annotation

English proficiency

Job description

our partner is seeking experienced Brazilian Portuguese Linguistic Experts to join a cutting-edge AI research project in partnership with a leading research lab. This role centers on evaluating how effectively a large language model (LLM) performs in Brazilian Portuguese-language tasks and on curating high-quality Portuguese linguistic data to train and improve the model's understanding and generation capabilities.

Key Responsibilities

• Evaluate the quality and accuracy of LLM-generated Portuguese text across various use cases (e.g., translation, summarization, dialogue, grammar correction).

• Edit, refine, or rewrite Portuguese content to meet linguistic and cultural standards for Brazil.

• Annotate Portuguese text for grammatical, syntactic, and semantic features.

• Identify model errors and language gaps, and collaborate with AI researchers to improve LLM performance.

• Provide detailed linguistic feedback and analysis to guide ongoing model training efforts.

You're a strong fit if you have:

• Native or near-native fluency in Brazilian Portuguese, with excellent command over grammar, syntax, and stylistics.

• Professional experience in translation, editing, linguistic annotation, or NLP data work in Portuguese.

• Strong 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 but not required).

• Excellent attention to detail and ability to spot subtle errors or unnatural phrasing.

• Clear communication skills and experience working in distributed, remote teams.

Why Join

• Contribute to cutting-edge AI research in partnership with a leading research lab.

• Work on high-impact projects that directly support the development of advanced AI systems.

• Gain hands-on exposure to state-of-the-art AI research and development.

• Join a fast-moving project where your expertise and judgment can have a meaningful impact.

This is a 100% remote contract role. Applicants must be located in: United States.