Portuguese Linguistic Experts

Confidential; United States; Remote; USD 60,000 - 90,000; Full time

Job summary

Zekai is seeking experienced Portuguese Linguistic Experts for a 100% remote contract role to support an advanced AI research project in collaboration with a leading research lab. The work focuses on evaluating LLM Portuguese performance and curating high-quality Portuguese linguistic data for training and improving model understanding and generation.

You will assess text quality across translation, summarization, dialogue, and grammar tasks, while editing content for linguistic accuracy and

Qualifications

• Native or near-native fluency in Portuguese with strong grammar and stylistics.
• Professional experience in translation, editing, linguistic annotation, or NLP data work in Portuguese.
• Understanding of linguistic nuances and regional variations.
• Interest in AI/LLM-language technologies (preferred).
• Excellent attention to detail and ability to spot subtle errors.
• Clear communication and experience working in distributed, remote teams.

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.
• 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.

Skills

Portuguese fluency

Translation/editing experience

Linguistic annotation / NLP data work

Job description

our partner is seeking experienced 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 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.

• 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 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 linguistic nuances, regional variations, and context-appropriate usage.

• 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 judgement can have a meaningful impact.

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