Riku Y.

Key Skills

Software

Scale AI

Other

Top Subject Matter

CJK (Japanese, Chinese, Korean) linguistic annotation and LLM training/evaluation for localization

CJK localization QA evaluation and rating

CJK translation/localization to support dataset/local content localization

Top Data Types

Text

Audio

Document

Top Task Types

RLHF

Transcription

Freelancer Overview

Senior AI Language Specialist & Trainer. Brings 10+ years of professional experience across legal operations, contract review, compliance, and structured analysis. Core strengths include Scale AI, Other, and SDL Trados Studio. Education includes Bachelor of Arts, Seoul National University (SNU) (2014). AI-training focus includes data types such as Text and Audio and labeling workflows including RLHF, Evaluation, and Rating.

Labeling Experience

Senior AI Language Specialist & Trainer

Scale AITextRLHF

Trained and evaluated CJK linguistic behaviors for next-generation LLMs using RLHF on AI-generated text. Assessed outputs for factual accuracy, cultural nuance, and grammatical precision across Japanese, Chinese, and Korean to guide model improvement. Curated, annotated, and cleaned multilingual datasets to support NLP training and evaluation. • Apply RLHF evaluation criteria to AI responses. • Manage multi-tier linguistic annotation and data evaluation workflows. • Perform data curation/cleaning and manual dataset evaluation. • Optimize prompts to reduce localization hallucinations by 35%.

2023 - Present

Linguistic Quality Assurance (LQA) Engineer

OtherText

Performed linguistic quality assurance (LQA) testing for CJK software localizations by evaluating localized text for correctness and presentation issues. Identified and resolved problems such as text overflow, truncation, and translation bugs in Japanese, Chinese, and Korean builds. Audited third-party translations for compliance with regional age-rating boards and platform guidelines. • QA review of localized CJK UI/text for formatting and accuracy issues. • Bug reporting and documentation for localization defects. • Compliance checks against CERO/GRAC/NPPA and platform policies. • Validation of translation integrity for release readiness.

2021 - 2023

Lead CJK Translator & Localizer

Text

Delivered CJK translation and localization work as part of end-to-end localization pipelines for software, gaming, and digital media. Produced translations across Chinese, Japanese, and Korean markets while maintaining strict structural and quality requirements using CAT tools and termbases. Coordinated with development stakeholders to ensure transcreation aligned with local market sensitivities. • Create localized translations for technical documentation, UI, marketing, and legal text. • Maintain translation memories and multilingual termbases to avoid structural errors. • Meet high QA targets for translation quality. • Coordinate with teams for context and transcreation alignment.

2019 - 2021

In-House Translator & Transcriptionist

AudioTranscription

Performed verbatim and clean-read transcription of high-level board meetings and market research interviews from multi-dialect audio. Produced time-aligned, formatted transcript outputs suitable for internal communication and research documentation. Applied AI translation tools together with human post-editing to accelerate related multilingual content production. • Create accurate meeting/interview transcripts. • Use audio formatting/transcription workflows. • Support localization-related text generation via MTPE. • Improve turnaround speed by combining AI translation and human editing.

2017 - 2019

Education

Work History