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Choong Hwan Jung

AI Trainer (Data Labeling for Korean-English Project)

SOUTH_KOREA flag
Seoul, South Korea
$30.00/hrIntermediateData Annotation TechOther

Key Skills

Software

Data Annotation TechData Annotation Tech
Other

Top Subject Matter

Korean-English Language Processing
Mathematics (Bilingual: Korean-English)

Top Data Types

TextText
ImageImage
AudioAudio

Top Task Types

Classification
Evaluation Rating
Fine Tuning

Freelancer Overview

AI Trainer (Data Labeling for Korean-English Project). Brings 7+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Master of Science, Seoul Women's University (2025) and Bachelor of Science, UC San Diego (2017). AI-training focus includes data types such as Text and labeling workflows including Translation, Localization, and Classification.

IntermediateKoreanEnglish

Labeling Experience

AI Trainer (Data Labeling for Korean-English Project)

Text
As an AI Trainer at Outlier AI, I was responsible for data labeling tasks specific to a Korean-English translation project. My duties included annotating text data to train AI systems for language understanding and improvement. This work required strong attention to detail and an understanding of both languages to ensure accurate labeling. • Labeled Korean and English text data for NLP tasks • Reviewed and corrected translation outputs • Collaborated with project managers to refine labeling guidelines • Ensured high-quality, consistent annotations

As an AI Trainer at Outlier AI, I was responsible for data labeling tasks specific to a Korean-English translation project. My duties included annotating text data to train AI systems for language understanding and improvement. This work required strong attention to detail and an understanding of both languages to ensure accurate labeling. • Labeled Korean and English text data for NLP tasks • Reviewed and corrected translation outputs • Collaborated with project managers to refine labeling guidelines • Ensured high-quality, consistent annotations

2025 - Present

AI Trainer (Mathematics Data Labeling with Bilingual Communication)

TextClassification
At 수학의힘, I performed data labeling focused on mathematical content with an emphasis on bilingual communication. My main role involved classifying text-based math problems and solutions to support AI-driven educational products. This position demanded mathematical competency and careful categorization of language elements. • Labeled and classified text data on math problems • Managed bilingual (Korean-English) content • Followed detailed annotation guidelines • Reported progress to supervisors

At 수학의힘, I performed data labeling focused on mathematical content with an emphasis on bilingual communication. My main role involved classifying text-based math problems and solutions to support AI-driven educational products. This position demanded mathematical competency and careful categorization of language elements. • Labeled and classified text data on math problems • Managed bilingual (Korean-English) content • Followed detailed annotation guidelines • Reported progress to supervisors

2025 - 2025

Education

S

Seoul Women's University

Master of Science, Software Convergence

Master of Science
2024 - 2025
U

UC San Diego

Bachelor of Science, Bioengineering

Bachelor of Science
2014 - 2017

Work History

S

SuHakUiHim

Math Teacher

Seoul
2023 - 2023
E

Edu8

Math Teacher

Seoul
2019 - 2022