• Email: hdchris765@snu.ac.kr
• LinkedIn: https://www.linkedin.com/in/hadong-lee-310122234/
• Location: Seoul, Republic of Korea

Seoul National University

B.S. in Computer Science & Engineering, Double Major in Business Administration

GPA: 3.87 / 4.3 (equivalent to 4.07/4.5, 126 credits)

Expected Graduation: August 2026

Relevant Coursework

• Computer Science: Discrete Mathematics, Data Structures & Algorithms, Logic Design & Computer Architecture, Systems Programming, Computer Network, Functional Programming, Programming Languages, Databases, Machine Learning
• Business Administration: Accounting, Financial Management, Investment, Operations Management

Languages

• OCaml, Rust, Scala: Used in coursework on functional programming and programming language
• C: Used in system programming courses to explore low-level computing concepts
• Python, TypeScript, Java: Used in assignments and personal projects, mainly for web development

Tools

• Git: Experienced with version control in collaborative environments, including branching, rebasing, and resolving merge conflicts
• Linux: Comfortable with basic command-line operations and remote access to cloud machines using SSH

Interpreter & Compiler in OCaml (Programming Languages Course) Spring 2025

• Implemented an interpreter for the imperative language K-, supporting environment-based function calls, memory management, and control flow within OCaml’s runtime
• Built a compiler from K- to the stack-based VM SM5, preserving variable immutability and supporting recursive functions with proper environment binding
• Developed an interpreter for the lambda-based functional language M, including both simple type checking and a let-polymorphic type system
• Translated SM5 bytecode to a simplified VM Sonata, eliminating continuations by encoding return addresses in memory

Event-Driven HTTP Server in C (Computer Networks Course)
Spring 2025

• Created a simple HTTP 1.1 web server using the epoll API in an event-driven architecture

Simple TCP stack in C (Computer Networks Course)
Spring 2025

• Implemented a reliable transport protocol on top of an unreliable network layer
• Supported 3-way/4-way handshake, reliable in-order delivery, and connection state transitions
• Designed robust buffering with interval-merge logic, retransmission using Karn-Partridge RTO, and Go-Back-N mechanism

Simple Router in C (Computer Networks Course) Spring 2025

• Built a basic IP router handling ARP, ICMP, TTL, and routing logic
• Implemented packet forwarding with ARP caching and ICMP response generation (Echo Reply, TTL Exceeded, Port Unreachable, etc.)
• Enforced source/destination IP blacklists and validated behavior across 7 integration tests

MEV Searcher (Creative Integrated Design 2) Spring 2025

• Designed a non-toxic MEV searcher that captures arbitrage opportunities between Uniswap V3 (DEX) and Binance (CEX)
• Developed a TypeScript + Node.js collector module to fetch and log real-time price data from both DEX and CEX APIs
• Built a TypeScript + Node.js simulator that mocks price feeds and order execution to validate strategy performance under realistic conditions

Memory Allocator in C (System Programming Course)
Fall 2024

• Implemented an efficient malloc/free system using a doubly-linked list and size-based binning strategy
• Optimized allocation and deallocation for performance in fragmented heaps

Custom DBMS using Berkeley DB and Python (Database Course)
Fall 2024

• Built a mini DBMS supporting SQL syntax
• Designed and implemented query parsing and execution

HumphreysTaxi – Full-Stack Web App
Spring 2024

• Designed and developed a taxi sharing platform using Next.js, Spring Boot, and AI-assisted UI features
• Deployed the application in a production environment during military service

R&D Engineer Intern - RideFlux Inc.

Seoul, South Korea | Jul – Aug 2025

• Project: LineMap
• Goal: Separate lane markings (lines) as an independent data structure within HD maps, and build a semi-automated generation pipeline with editing tools.
• Applied post-processing algorithms to deep learning model–generated line point clouds, producing polyline-based line maps.
• Developed a RViz–based editing tool for interactive line map refinement.
• Designed and implemented evaluation algorithms to measure the accuracy of automatically generated line drafts against ground truth.
• Built an editor for inserting road connection information, enabling the construction of higher-level HD maps.

Undergraduate Teaching Assistant – System Programming

Seoul National University, South Korea | Mar - Jun 2025

• Managed remote Linux VM setup and responded to general student inquiries via the course’s online Q&A platform
• Supervised quizzes and exams, prepared clear grading rubrics, and graded large volumes of submissions with consistency
• Served as sub-TA for the Memory Lab, answering student questions and reviewing final submissions for semantic alignment with assignment goals
• Led lab sessions and managed grading as the primary TA for the Simple Key-Value Store Lab, providing code explanations and debugging guidance based on skeleton code
• Reviewed test and exam questions in advance to prepare for in-exam student inquiries and ensured fair evaluation through standardized criteria

Frontend Engineer Intern – Deeping Source Inc.

Seoul, South Korea | Jul – Aug 2024

• Developed a React-based UI for the UserTool platform supporting offline analysis solutions
• Built interactive UI components using TypeScript and Recoil, emphasizing immutable state and modular design
• Contributed to version control with Git, sprint planning, and code reviews in a collaborative team
• Authored internal documentation for onboarding and system knowledge sharing

Unit Supply Specialist – U.S. Army 1st Signal Brigade

Camp Humphreys, South Korea | Dec 2022 – Jun 2024

• Served as a KATUSA(Korean Augmentation To the U.S. Army) soldier facilitating cross-cultural coordination between U.S. and ROK forces
• Participated in joint training exercises and performed bilingual logistics support
• Handled peacetime supply receipt and distribution using the U.S. Army's GCSS system (MOS: 92Y)

Frontend Development Member – Waffle Studio

Seoul National University | Sep 2021 - Jun 2022

• Participated in frontend development seminars hosted by the university dev club
• Collaborated with team members on toy web app projects using modern frameworks

Algorithm Practice (C++) during Military Service

2023–2024

• Practiced problem solving using C++, reinforcing academic understanding of data structures and algorithms
• Solved algorithmic challenges on online judges (e.g., DP, BFS & DFS, greedy methods)