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Dajung Kim

Dajung Kim

A Korean and English data labeling expert who was a top reviewer

South Korea flagIncheon, South Korea
$30.00/hrIntermediateData Annotation TechLionbridgeScale AI

Key Skills

Software

Data Annotation TechData Annotation Tech
LionbridgeLionbridge
Scale AIScale AI

Top Subject Matter

No subject matter listed

Top Data Types

DocumentDocument
ImageImage
TextText

Top Task Types

Audio Recording
Classification
Emotion Recognition
RLHF
Translation Localization

Freelancer Overview

I have extensive experience in RLHF evaluation and have been promoted to Senior Reviewer, where I reviewed and approved other annotators’ work to maintain high quality across projects. My performance led to being selected as a candidate for the final QA auditor role. Beyond standard evaluation tasks, I have also conducted multimodal reviews, such as assessing whether AI models correctly interpreted chemistry-related diagrams and domain-specific prompts. My background in reading, writing, acting, and translation contributes to strong linguistic sensitivity, particularly in Korean. I excel in localization-focused work and can accurately identify subtle grammatical distinctions, including particles, honorifics, and contextual nuance. These strengths allow me to deliver precise, culturally aligned translations and highly detailed evaluation feedback.

IntermediateKoreanEnglish

Labeling Experience

Data Annotation Tech

RLHF Evaluation (Korean)

Data Annotation TechTextRLHFEvaluation Rating
Created prompts according to task guidelines, evaluated model responses for quality and compliance, and was promoted to Reviewer based on consistent high performance.

Created prompts according to task guidelines, evaluated model responses for quality and compliance, and was promoted to Reviewer based on consistent high performance.

2025 - 2025
Scale AI

Korean Localization Translation

Scale AITextTranslation Localization
Translate English content into Korean while adapting cultural context, references, and character details to ensure the text is natural and appropriate for Korean users.

Translate English content into Korean while adapting cultural context, references, and character details to ensure the text is natural and appropriate for Korean users.

2025 - 2025
Data Annotation Tech

Chemistry Diagram Validation (Korean)

Data Annotation TechImageEvaluation RatingPrompt Response Writing SFT
Evaluate whether AI-generated chemistry diagrams such as molecular structures, chemical formulas, and bonding representations are scientifically accurate and correctly constructed, identifying errors or structural inconsistencies.

Evaluate whether AI-generated chemistry diagrams such as molecular structures, chemical formulas, and bonding representations are scientifically accurate and correctly constructed, identifying errors or structural inconsistencies.

2025 - 2025
Data Annotation Tech

Voice Style & Tone Generation

Data Annotation TechAudioEmotion Recognition
Labeled the appropriate tone, intonation, and vocal style for how a response should be spoken, based on the given prompt.

Labeled the appropriate tone, intonation, and vocal style for how a response should be spoken, based on the given prompt.

2025 - 2025
Data Annotation Tech

Dual-Model Response Evaluation

Data Annotation TechTextRLHF
Evaluate responses generated by two different AI models using the same prompt, compare their quality, and write a justification explaining which model performed better and why.

Evaluate responses generated by two different AI models using the same prompt, compare their quality, and write a justification explaining which model performed better and why.

2025 - 2025

Education

D

Dongduk Women's University

Bachelor's, Curatorial Studies

Bachelor's
2012 - 2017

Work History

C

Cambly

Communications Specialist

Seoul
2020 - 2024