Curriculum vitaeUpdated October 2026
Yunmin Cha 차윤민
mrcha033@yonsei.ac.kr · mrcha033.github.io · github.com/mrcha033 · linkedin.com/in/ynmncha
Systems research, engineering, and university service.
Education
Yonsei University
March 2022 – presentSeoul, Republic of Korea
B.B.A. candidate in Business Administration; second major in Computer Science.
Undergraduate–Master’s Integrated Track in Computer Science, School of Computing.
Selected coursework
Operating Systems · Multicore and GPU Programming · Computer Systems · Computer Architecture · Data Structures · Decision Under Uncertainty · AI and Operations Analytics · Linear Algebra
Research
Systems for predictable and efficient LLM inference, and decisions under uncertainty.
Sharing GPUs among LLM workloads
July 2026 – presentS3 Lab, Yonsei University · Advisor: Prof. Jinkyu Jeong
Scheduling beneath LLM serving engines: dividing a GPU among workloads whose demand is uncertain.
My part: the problem formulation, the scheduling policies, and a native serving engine.
Causal performance analysis for GPU programs
July 2026 – presentS3 Lab, Yonsei University · Advisor: Prof. Jinkyu Jeong
Estimating what speeding up one region of GPU code would do for the whole application.
My part: the profiler, the binary instrumentation beneath it, and the experiments that check its predictions against real optimizations.
Moving data from storage to GPU memory
July 2026 – presentS3 Lab, Yonsei University · Advisor: Prof. Jinkyu Jeong
The design space of direct storage-to-GPU I/O, and which processor should control it.
My part: the Linux driver and GPU library the comparisons run on, and the measurements.
AI and ordering decisions
October 2026 – presentWhen AI that reads documents and asks managers questions reduces the loss of an ordering decision.
My part: the decision model and its AI system, the pilot experiments, and the software for the study with participants.
Open source
SGLang upstream pull requests
July 2026A fix that lets the copy-engine-free transfer handle any expert count up to 512, and a consecutive-prefill budget that limits decode starvation. Both open as of October 2026.
Honors and scholarships
Top Honors (최우등상)
Fall 2022; Spring 2023Semester academic honors, Yonsei University.
Honors (우수상)
Spring 2026Semester academic honors, Yonsei University; top 10%.
Industry–Academia Project Excellence Scholarship
Spring 2026SW-Centered University Program, Yonsei University; KRW 5,000,000.
Industry experience
CTO, PREP
May 2025 – presentSeoul, Republic of Korea
Led architecture and delivery of a production platform serving real users, including backend APIs, relational data models, deployment automation, and operational tooling.
Owned reliability and latency work across releases through CI/CD, structured logging, health monitoring, and repeatable incident-debugging workflows.
Leadership and university service
Yonsei University Student Council
2025Chair, Audit Committee · Member, Election Management Committee
Yonsei University Student Clubs Union
2024 – 2026- Interim Committee Chair, Religious Clubs Division2026
- Member, General Operations Office2026
- Development Team Lead, Pub Task Force; Member, Audit Committee2025, 2026
- Chair, Religious Clubs Division2025
- Deputy Director, Club Representatives’ Workshop2025
- Vice Chair, Religious Clubs Division2024
Skills and languages
- Programming
- Python, C, C++, CUDA C++, Bash, TypeScript/JavaScript, SQL
- GPU and ML systems
- CUDA, SASS instrumentation, NVBit, CUPTI, Nsight Systems/Compute, NVML, cuBLASLt, cuDNN, NCCL, vLLM, SGLang, PyTorch
- Systems and I/O
- Linux kernel modules, NVMe, asynchronous I/O, CMake, Docker, PostgreSQL, SQLite
- Research infrastructure
- Pytest, Git, GitHub Actions, LaTeX, deterministic experiments, provenance and telemetry instrumentation
- Languages
- Korean (native), English (fluent), Spanish (intermediate)