(Seoul) Senior Applied Research Scientist

Conquering cancer through AI. Lunit is a medical AI software company that provides AI-powered total cancer care. The company is looking for a Senior Applied Research Scientist to join their AI Foundation Team and work on building the next generation of multimodal medical foundation models.

Requirements

• 5+ years of professional experience in AI development, search and RAG
• Proficient in English
• Overall understanding of the healthcare industry and passion for artificial intelligence
• Strong expertise in RAG systems: document chunking, vector indexing, reranking, and retrieval pipeline design
• Solid understanding of LLM fine-tuning, tokenizer optimization, and multilingual model operation
• Hands-on knowledge of cloud deployment, CI/CD, containerization, and scalable backend systems
• Experience with graph-structured retrieval, temporal/spatial metadata normalization, or versioned KBs
• Proven record of end-to-end LLM productization (data → training → serving)
• Experience with multilingual search and UX (e.g., Japanese, Korean, English)
• Clear and structured communicator; able to explain complex systems to both researchers and engineers
• Ownership mindset and high execution speed under tight deadlines
• Collaborative and self-driven—comfortable bridging between AI research, data, and engineering teams
• Leadership in cross-functional applied AI projects or startup-style product teams
• Ability to identify and prioritize impactful technical directions with minimal supervision

Benefits

• Meal Allowance (up to 12,000 KRW per meal)
• Decoration allowance (up to 300,000 KRW)
• Latest computer models (Macs and 4K monitors)
• Seminar registration fees and book purchases covered
• Regular in-house AI and medical seminars
• Korean lessons for non-Korean speakers
• In-house English lessons (Luniversal)
• Access to high-quality AI learning resources & deep learning DevOps system
• Benefits points (up to 1.2 million KRW annually)
• Holiday Allowances (gifts or vouchers)
• Congratulatory and Condolence allowances
• Paid time off
• Annual medical checkups and employee accident insurance