Applied LLM Research Engineer

ILHO AHN

My interests center on applied LLM research, especially generation quality, evaluation, preference data, and alignment for product-facing language tasks.

Experience

CJ Olive Young, Data Scientist / Modeling Lead
MUSINSA, AI Engineer
KPMG Lighthouse, Data Scientist / R&D Lead
KRAFTON, Data Scientist / Data Engineering Lead
Yello Mobile, Data Engineer

Selected Work

Built Gemma-based sLLM workflows for recommendation-card generation, including QLoRA/PEFT training, NLL-based quality evaluation, and DPO/GRPO alignment.
Trained semantic retrieval models with weak supervision from search logs and product interaction signals.
Developed multimodal classification and document-understanding pipelines across fashion, finance, and game-service domains.

AWS Summit Seoul 2019 Speaker Presented a case study on MMORPG anomaly detection. Video, Slides
Big Contest 2016, Korea National Information Society Agency Award
OSS World Challenge 2015, Gold Prize for ErRabbit

Links