Mandarin AI Evaluation & Localization Expert

About OpenTrain

OpenTrain is the #1 platform for people building careers in AI training and data labeling. We help freelancers discover projects, build a unified portfolio of annotation and evaluation work, and grow into durable freelance careers working on the human side of AI.

OpenTrain AI is the hiring organization for this role; we work with contributors directly to deliver high-quality training data and feedback that improve real-world AI systems.

About AI training and why it matters

AI training (also called data labeling, annotation, or human feedback) is the human work that teaches models what good answers look like—transcribing audio, rating responses, translating or localizing text, and evaluating reasoning. This work is remote, flexible, and accessible to many skill levels, and contributors directly shape how state-of-the-art AI behaves.

• Flexible, remote work that fits around other commitments.
• Entry points that emphasize language skill and attention to detail; specialist work rewards domain expertise.

The role

As a Mandarin AI Evaluation and Localization Expert you will review AI-generated Mandarin responses, judge reasoning quality, apply localization judgment, and produce high-quality explanations and model solutions. Your evaluations will guide model behavior through structured feedback and example solutions.

• Contractor, part-time engagement: work remotely while based in Singapore or Hong Kong.
• Minimum commitment: 20+ hours per week.
• Work type: text evaluation including RLHF-style tasks, response comparison, fact-checking, and content localization.

What you'll do

Daily work blends careful editorial judgment with structured annotation: you will read prompts and AI outputs, identify errors or weaknesses, and record ratings and written feedback. When needed you will write model solutions that show correct reasoning and localized phrasing.

• Review AI responses for accuracy, clarity, logic, and adherence to prompts.
• Assess methodological or conceptual errors and assign evaluation ratings.
• Fact-check claims and references in localized content.
• Write clear explanations and model solutions demonstrating correct approaches.
• Compare multiple model outputs and select or rank the strongest answer.
• Apply Mandarin localization judgment to terminology, tone, and cultural nuance.

Requirements

This role requires strong language skills, localization experience, and familiarity with quality frameworks used in translation QA. Preserve the required qualifications below—these are mandatory for consideration.

• Native or near-native Chinese (Mandarin) proficiency (required).
• Minimum C1 English reading and writing ability.
• Experience applying MQM or LQA quality criteria in evaluation decisions.
• Familiarity with CAT tools, translation memory, termbases, and automated QA workflows.
• Excellent editorial judgment and careful fact-checking habits.
• Ability to detect subtle meaning shifts and ensure culturally appropriate phrasing.

Helpful / preferred background

The following qualifications strengthen an application but are not strictly required. We look for experienced localization professionals who can deliver consistent throughput and clear documentation.

• Bachelor’s degree in Translation, Linguistics, Localization, Communications, or related field.
• 5+ years of professional localization or translation experience.
• Experience with multilingual localization projects, style guides, and terminology management.
• Prior AI data training, annotation, or evaluation experience is preferred.

Compensation, hours, and logistics

This is a part-time contractor role paying USD 40.00 per hour. The expected minimum commitment is 20+ hours per week. Work is performed remotely but applicants must be located in Singapore (SG) or Hong Kong (HK). Tasks are text-based and include evaluation ratings, text generation checks, QA for question answering, and RLHF-style feedback.

• Pay: $40 USD per hour (PAY_PER_HOUR).
• Time requirement: 20+ hours per week (contractor).
• Data type: Text; label types include evaluation rating, text generation, question answering, and RLHF.
• Employment types: Contractor, Part-time.

How to apply and who should apply

If you are a Mandarin-language localization professional who enjoys careful editorial work and structured evaluation, apply through your OpenTrain account. This role suits experienced translators/localization QA specialists who want steady, remote contract work shaping AI behavior.

When applying, highlight relevant MQM/LQA experience, CAT tools you use, examples of localization work, and any prior AI evaluation projects. We prioritize clear documentation, dependable throughput, and demonstrated accuracy in localized content.

• Location: Applicants must be based in Singapore or Hong Kong.
• Languages required: Mandarin (zh) native/near-native and English (en) C1 reading/writing.
• Include examples of translation/localization work and note any experience with MQM/LQA and CAT tools.