Chinese/English Bilingual AI Data Annotator & Evaluator

CNTXT AI; United States; Remote; USD 21,000 - 55,000; Part time

Job summary

CNTXT AI is seeking a fully remote hourly contractor to support AI data and language projects. You will work on data annotation, LLM evaluation, content generation, and localization QA across tasks, with senior Mandarin localization and English proficiency.

Qualifications

• Bachelor's degree or higher in translation, linguistics or related field.
• Native or near-native Mandarin (Simplified) with strong writing/editing skills.
• Minimum C1 English proficiency for interpreting prompts and guidelines.
• Excellent editorial judgment in tone, punctuation and cultural nuance.

Responsibilities

• Data annotation, labeling, and structuring for AI training datasets.
• LLM evaluation of AI outputs for accuracy and coherence.
• Content generation and voice data collection for model guidance.
• Localization QA to ensure locale accuracy across outputs.

Skills

Mandarin (Simplified)

English proficiency (C1)

Editorial judgment

Localization quality

QA & validation

Education

Bachelor's degree or higher

Tools

CAT tools

QA workflows

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:

• 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 Mandarin (Chinese simplified) 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 Mandarin (Chinese simplified) 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 AI

CNTXT 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.