Ryuichi Lun (Ryu)

Software engineer building AI agent systems and the backend infrastructure that keeps them fast and reliable. M.S. Computer Science at the University of Southern California, graduating December 2026. Starting a full-time software engineering role in February 2027 and always open to connecting. U.S. Permanent Resident.

Experience

• AI Engineer Intern, Rakuten Group (Rakuten AI), Tokyo, 2026: LLM cost monitoring on Claude Managed Agents and AI code review for every pull request.
• Software Engineer Intern, Tomorrow's AI, 2024 to 2025: NLP data pipelines on AWS.
• Systems Research Engineer (Student), Keio University Data Platform Laboratory, 2022 to 2024: FafnirDT concurrency control in C++.

Research

• MIRROR: Multipath Quorum Integrity for LLM Multi-Agent Communication, NeurIPS 2026 FLMSec Workshop (accepted), first author.
• FafnirDT: Dynamic Timestamp in Lock-based Concurrency Control Protocols, 163rd System Software & OS Symposium, 2024, first author.

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