About this role
AI Engineer (Ads) at Toss. Location: Seoul, /, Korea. Role: designing AI, automating ads, evaluating quality Requirements: Experience building end-to-end AI/ML products for ads using LLMs and image-generation models; strong prompt engineering, evaluation design, and operationalization skills; ability to define metrics and safeguards. Category: Research and Development (R&D) Seniority: Senior Level Tools: LLM, RAG, Agent, Prompt-engineering, Hugging Face, SFT, DPO, PPO, ORPO, GRPO, LLM Eval, reranker, VLM finetuning, Transformers Commitment: Full Time Workplace: Onsite Languages: Korean