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Mercor is seeking native Portuguese speakers from Portugal or Brazil with exceptional writing skills to contribute to a high-impact AI research project with a leading lab. Freelancers will author Portuguese / English prompt–golden answer pairs that train and evaluate advanced language models.

• This role is strictly limited to candidates who are native to Portugal or Brazil and have lived in or spent significant time in the country, with deep familiarity with local language usage, tone, and cultural context. This is a short-term, flexible opportunity for professionals who combine language mastery, strong critical thinking, and a knack for instructional clarity. Ideal for those who enjoy distilling complex concepts into well-crafted, culturally grounded Portuguese text while maintaining technical precision in English. * * * ## Job Details ### Multilingual Prompt Design & Optimization : Create detailed prompts in Portuguese and / or English with multiple constraints and instructions, ensuring natural phrasing and real-world relevance for Portuguese-speaking users in Portugal and Brazil contexts. ### Define and Document Evaluation Standards : Establish high-level expectations for correct responses in Portugal and Brazil consumer contexts, and develop comprehensive rubrics that account for linguistic nuance, tone, and cultural conventions specific to these regions. ### Model Testing and Grading (Bilingual) : Run prompts through models and assess preliminary outputs for accuracy, fluency, and cultural fit in Portuguese, comparing results against English where needed. ### Benchmarking & Quality Assurance : Collaborate in QA review processes to ensure prompt tasks and rubrics meet rigor—maintaining consistency and reliability across Portuguese-language benchmarks before integration into official evaluations. * * * ## Minimum Qualifications - Native-level fluency in Portuguese (written), specific to Portugal or Brazil usage, with strong reading / writing ability in English. - Must be native to Portugal or Brazil and have lived in or spent significant time in-country , with deep cultural and linguistic familiarity. - BS or BA from a reputable institution (completed or in progress). - Strong writing and critical thinking skills. - Ability to work independently and meet deadlines. - Significant familiarity with ChatGPT or similar tools for personal decision-making, hobbies, or general interests. - Based in Portugal or Brazil (or able to reliably produce Portugal- or Brazil-specific, culturally accurate Portuguese). * * * ## Preferred Qualifications - Experience in teaching, research, editing, or academic writing. - Experience creating evaluation criteria, rubrics, or grading guidelines. - Familiarity with LLMs, prompting, or model evaluation (helpful but not required). * * * ## Application & Onboarding Process - Complete an AI-led interview (about 15 minutes). - If approved, complete a paid assessment focused on writing and rubric creation - Then, if selected, you will be invited to work on the project. * * * ## More Details About This Role - Expect to contribute at least 20 hours per week. - Expect a commitment of approximately 2–4 months . - You’ll be working in a structured project environment with clear goals and tools.