About

About

Sungchan Yi

Research Interests: computer architecture, hardware-software co-design, security, formal verification

Education

Seoul National University (Sept. 2024 ~ Present)

Seoul National University (Mar. 2017 ~ Feb. 2024)

  • B.S. in Computer Science and Engineering, Minor in Mathematical Sciences
  • GPA: 3.96/4.3 (Summa Cum Laude)

Research Experience

Architecture and Code Optimization Lab, M.S. Candidate (Mar. 2024 ~ Present)

  • Leading Software Defined Manycores project

Cryptography & Privacy Lab, Undergraduate Research Assistant (Jan. 2024 ~ Feb. 2024)

  • Implemented BFV homomorphic encryption scheme and its bootstrapping over a large message space
  • Analyzed automorphism group of the plaintext space and determined their effects on ciphertext

Software Foundations Lab, Undergraduate Research Assistant (Jul. 2023 ~ Oct. 2023)

  • Implemented stack variable merging optimization that reduces memory allocation calls and tried to prove its correctness with Rocq theorem prover

Architecture and Code Optimization Lab, Undergraduate Research Assistant (Jan. 2023 ~ Mar. 2023)

  • Implemented a parametrized experiment framework to automate training and evaluation of various CNN models with different activation functions and their knowledge distillation based ReLUifications
  • Quantified benefits of ReLUification on sparsity-aware NPU for Samsung mobile SoC in terms of memory footprint and computation reduction

Work Experience

Scatterlab, Software Reliability / Security Engineer (Nov. 2020 ~ Sept. 2022)

  • Spring Boot (Java) Backend, Docker/Kubernetes, AWS Cloud Security and Operations
  • Led cloud security project, co-worked with AWS to completely rebuild and secure the cloud infrastructure
  • Led software reliability team, cut server operation costs with spot instances and container orchestration

Logpresso, Big Data Platform Engineer (Jul. 2019 ~ Oct. 2020)

  • Implemented loggers, parsers, and query commands that collect and analyze data from various sources, applied software-level optimizations to improve performance
  • Optimized distributed security operation system from pull to push architecture to reduce latency

Publications

  • [ACCV’24] Soosung Kim, Yeonhong Park, Hyunseung Lee, Sungchan Yi, and Jae W. Lee, “ReLUifying Smooth Functions: Low-Cost Knowledge Distillation to Obtain High-Performance ReLU Networks”, Asian Conference on Computer Vision (ACCV), Hanoi, Vietnam, December 2024. (PDF)
  • Sungchan Yi, “Secure IAM on AWS with Multi-Account Strategy”, Undergraduate Thesis, December 2023. Received best undergraduate paper award. (PDF)

Honors & Awards

Best Undergraduate Paper Award

  • Title: Secure IAM on AWS using Multi-Account Strategy

Top Prize in Hacking and Defense Contest 2021

  • Awarded by Korea Internet & Security Agency (KISA)
  • Topic: Design and Operation of Secure Cloud Architectures

Kwanjeong Educational Foundation Scholarship

  • Full tuition and fees for 2 years of undergraduate studies

Extracurricular Activities

Web Administrator of Architecture and Code Optimization Lab

  • Responsible for maintaining the web infrastructure: website, cloud, accounts, wiki, etc.
  • Installation of convenient tools such as shared password manager and schedule notification system

Seoul National University College of Engineering Honor Society (Mar. 2022 ~ Aug. 2023)

  • SNU Tomorrow’s Edge Membership (STEM)
  • Web Administrator: reduced cloud infrastructure costs by 50% and installed shared storage

Guardian, Seoul National University Security Club (2018 ~ Present)

  • Former president of the club in 2019
  • Taught basic Linux, x86 assembly, and C programming to new members
  • Created 30 linux/x86 assembly wargame challenges for members to practice

Technical Skills & Interests

  • Programming Languages: C/C++, Java, Python, Golang, Coq
  • Architectural Simulators: gem5
  • DevOps: Docker, Kubernetes, AWS
  • System/cloud security, cryptography
  • Compilers and formal verification
  • Mathematics in general, especially algebra and analysis

Language Proficiency

Fluent in English and native in Korean

  • IBT TOEFL: 113 (Reading: 30, Listening: 30, Speaking: 26, Writing: 27)