L W.

Key Skills

Software

Other

Top Subject Matter

Multilingual (English/Mandarin) AI data labeling

annotation QA

and LLM output evaluation

Top Data Types

Text

Document

Top Task Types

Entity (NER) Classification

Classification

Prompt + Response Writing (SFT)

Question Answering

Text Generation

Text Summarization

Transcription

Red Teaming

RLHF

Fine-tuning

Freelancer Overview

Bilingual AI Data Specialist — AI Annotation, Evaluation & Prompt Engineering (Independent). Brings 13+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Engineering, Beijing Institute of Technology. AI-training focus includes data types such as Text and labeling workflows including Evaluation and Rating.

Labeling Experience

Bilingual AI Data Specialist — AI Annotation, Evaluation & Prompt Engineering (Independent)

OtherText

Provided multilingual annotations and classified text for sentiment, intent, topic, and categories. Evaluated and ranked LLM outputs (ChatGPT, Claude, Gemini) for factual accuracy, helpfulness, tone, and safety using guideline-driven QA. Performed pairwise preference comparison and quality scoring to support model fine-tuning workflows. • Annotated English/Mandarin samples with structured labels • Performed pairwise comparisons and numeric quality scoring • Flagged inconsistencies and ambiguous edge cases • Transformed unstructured text into schema-compliant datasets

2023 - Present

Education

Work History