Yoonjae C.

Key Skills

Software

Other

Top Subject Matter

Korean text data quality assurance

Music metadata QA (Korean)

Translation/localization (Korean)

Top Data Types

Text

Document

Top Task Types

Classification

Data Collection

Prompt + Response Writing (SFT)

Freelancer Overview

Korean Message Tagging/QA (Data labeling/QA). Brings 15+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Other. Education includes College, Seoul College (2008) and High School Diploma, Jamsil Girls' High School (2003). AI-training focus includes data types such as Text and labeling workflows including Classification, Evaluation, and Rating.

Labeling Experience

Writing logical knowledge about Blockchain

OtherTextPrompt + Response Writing (SFT)

Created logical writing outputs related to blockchain for a short Upwork contract. Produced text suitable for dataset or content requirements centered on blockchain topics. Ensured deliverables matched the requested logical knowledge/writing format. • Role: Writing logical knowledge about Blockchain • Data: blockchain-related text • Activity: content writing as labeled text • Platform: Upwork

2023 - 2023

Voice Recording for Native Koreans (English to Korean)

OtherText

Performed English to Korean translation work for a project involving voice recording review. Produced Korean-language translation deliverables based on English source material for client requirements. Supported the labeling/processing workflow by ensuring translations were accurate and usable. • Role: English to Korean • Data: translated text for voice-related content • Activity: translation/localization as annotation deliverable • Platform: Upwork

2023 - 2023

Music Metadata Quality Assurance - Korean

OtherText

Conducted Music Metadata Quality Assurance for Korean-language music metadata entries. Evaluated the correctness and quality of metadata fields according to job requirements. Delivered reviewed results within the contract period to support downstream use of the dataset. • Role: Music Metadata Quality Assurance • Data: text-based music metadata • Activity: QA/evaluation of metadata quality • Platform: Upwork

2023 - 2023

Ukrainian, Nigerian, Thai, Vietnamese, Filipino, Malay translator (casino/betting terms)

OtherText

Worked as a translator for casino/betting terminology across multiple languages and produced localized text in fluent languages. Prepared translated outputs aligned with specialized gambling/betting terms. Delivered translation work within the contract window for client use. • Role: Casino/betting terms translation • Data: specialized gambling-related text • Activity: translation/localization of domain terms • Platform: Talent Store / Upwork

2022 - 2023

Mobile game: English to Korean

OtherText

Translated mobile game content from English to Korean for an Upwork client. Localized text to be consistent with game context and intended user experience. Produced translation deliverables over the contract duration to support game content release. • Role: Mobile game English to Korean • Data: game UI/text for localization • Activity: translation/localization • Platform: Upwork

2022 - 2023

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Education

Work History