Portuguese Data Trainer

Job Title: Portuguese Data Trainer - Remote

Location: Remote

Role Overview

This is a remote, hourly-paid contractor role focused on improving the safety, reliability, and reasoning quality of advanced AI systems. You will review AI-generated content, evaluate step-by-step reasoning, and provide expert feedback to ensure outputs are accurate, logical, and aligned with safety policies.

Working across

Brazilian Portuguese and English , you will apply nuanced linguistic, cultural, and policy judgment to evaluate and improve model behavior. Your work will directly contribute to enhancing the safety and alignment of leading AI systems used globally.

This role may involve exposure to sensitive content, including material that is sexual, violent, or psychologically disturbing.

Key Responsibilities

• Review and evaluate AI-generated responses for accuracy, clarity, reasoning quality, and safety compliance
• Identify logical, methodological, or conceptual errors in model outputs
• Compare and rate multiple AI responses based on correctness, safety alignment, and policy adherence
• Perform fact-checking and validation where required
• Conduct red-teaming and adversarial testing to uncover vulnerabilities, edge cases, and unsafe behaviors
• Document findings with clear, structured reasoning and reproducible decision paths
• Apply and localize safety policies consistently across Portuguese and English, identifying slang, coded language, and cultural nuance
• Escalate ambiguous cases using defined policy frameworks

Required Qualifications

• Bachelor’s degree or higher in Linguistics, Communications, Psychology, Law, Policy, Security Studies, or a related field (or equivalent experience)
• Native or near-native Brazilian Portuguese proficiency (reading and writing)
• Minimum C1 English proficiency (reading and writing)
• 5+ years of experience in Trust & Safety, content moderation, policy operations, compliance, investigations, or related functions
• Proven LLM red-teaming / adversarial testing experience (required)
• Strong ability to preserve meaning, intent, and severity across languages
• Excellent analytical writing and structured reasoning skills
• High attention to detail and consistency in applying safety guidelines
• Ability to work independently in a remote contractor environment
• Secure handling of sensitive and confidential content

Preferred Qualifications

• Experience in AI data annotation, model evaluation, or localization/translation
• Familiarity with tools such as ChatGPT, Gemini, Perplexity, or similar AI platforms
• Experience working with structured safety taxonomies or policy frameworks
• Background in investigative, editorial, or analytical roles