Brazilian Portuguese/English Bilingual AI Data Annotator & Evaluator

CNTXT, Inc.; United Arab Emirates; Remote; AED 165,000 - 331,000; Full time

Job summary

CNTXT, Inc. is seeking a fully remote, hourly contractor to support AI data and language projects. You will apply senior-level Brazilian Portuguese localization with C1 English proficiency to ensure accurate terminology, tone, and cultural nuance across use cases.

Experience with localization QA and CAT tools is preferred. This project-based role emphasizes high-quality edits, rigorous fact-checking, and clear written communication across time zones.

Qualifications

• Bachelor's degree or higher in a related field or equivalent experience.
• Native or near-native Brazilian Portuguese with strong writing/editing skills.
• Minimum C1 English proficiency for interpreting prompts and guidelines.
• Excellent editorial judgment on tone, style, and cultural nuance.
• Ability to fact-check localized content using reliable sources.
• Strong attention to detail and cross-time-zone communication.

Responsibilities

• Perform Brazilian Portuguese localization and translation judgments for AI data tasks.
• Annotate data, evaluate AI-generated responses, and generate high-quality prompts where needed.
• Ensure consistency of terminology, tone, and locale details across outputs.
• Identify drift and inconsistencies, and document corrections clearly.

Skills

Data annotation

LLM evaluation

Content generation

Localization QA

Editorial judgment

Portuguese-English bilingual

Time management

Education

Bachelor's degree or higher

Tools

CAT tools

QA workflows

MQM/LQA concepts

Job description

This is a fully remote, hourly contractor role supporting AI data and language projects on a project-based, flexible hour basis. Project scopes vary and may include:

This is a fully remote, hourly contractor role supporting AI data and language projects on a project-based, flexible hour basis. Project scopes vary and may include:

• -Data annotation: labeling, classifying, and structuring documents, tables, and other content to support AI training datasets.
• -LLM evaluation: reviewing AI-generated responses for accuracy, reasoning quality, coherence, and cultural/linguistic appropriateness.
• -Content generation: writing high-quality prompts and model responses, or recording high-quality voice samples, to guide AI learning across diverse topics.
• -Localization QA: ensuring terminology, tone, cultural nuance, and locale-specific details (units, references, names, dates) are consistently accurate across outputs.

You will apply senior-level Brazilian Portuguese localization and translation judgment alongside minimum C1 English proficiency to ensure terminology, tone, and cultural nuance are consistently accurate across use cases.

Profile Requirements

• -Bachelor's degree or higher, preferably in Translation, Linguistics, Localization, Communications, or a related field.
• -Native or near-native Brazilian Portuguese proficiency with strong writing and editing skills.
• -Minimum C1 English proficiency (reading/writing) for interpreting prompts, source materials, and evaluation guidelines.
• -Excellent editorial judgment in register, tone, punctuation, inclusivity, and cultural nuance, with extreme attention to detail.
• -Ability to identify meaning drift, ambiguity, locale inconsistencies, and subtle errors, and to explain corrections clearly in writing.
• -Ability to rigorously fact-check localized content (units, references, names, dates) using reliable sources and consistent reasoning.
• -Ability to identify reasoning gaps, methodological errors, and unclear explanations even when language is fluent.
• -Reliable, self-directed, and able to deliver consistent quality with clear communication and responsiveness across time zones.

Preferred Experience

• -Professional localization or translation experience.
• -Previous experience with AI data training, annotation, or evaluation.
• -Familiarity with MQM/LQA concepts (severity, category, and root-cause thinking) for consistent quality decisions.
• -Familiarity with CAT tools and QA workflows.

About CNTXT

AICNTXT AI builds artificial intelligence products and data solutions with a focus on making AI accurate, safe, and globally relevant for impact. Our work spans data services, custom AI solutions, and proprietary AI products, with deep expertise in Arabic-native and secure, sovereign solutions.