3rd-year CS undergraduate at Soongsil University. I work at the intersection of AI systems, security, and infrastructure — building things that ship to real users and contributing to open-source projects I rely on.
LLM Jailbreak Comparative Study — Independent research under Prof. Bong Jun Choi (AI Security Lab, SSU)
Evaluated adversarial robustness of Claude Sonnet vs GPT-4o across 4 experiment types and 9 prompt categories. Discovered a turn-count reversal effect in extended multi-turn attacks (Claude 0%→50%, GPT-4o 0%→0% refusal).
→ github.com/eunseo9311/llm-jailbreak-study
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InsForge — Agent-native backend platform (YC P26). 3 merged PRs: empty string stripping consistency (#1364), database records fix (#1444), follow-up improvement (#1457). Closed user-reported issue #1429.
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Hugging Face / tokenizers (★10.8k) — Fast State-of-the-Art Tokenizers in Rust. 1 merged PR: return type annotation fix (#2074)
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HelixDB — Graph-vector database for AI agent memory. 1 merged PR: TypeScript SDK package name fix (#923)
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Verilator (★3.5k) — Industry-standard SystemVerilog simulator. 3 merged PRs: build fix on Apple clang (#7327), regression test (#7328), diagnostic improvements (#7329)
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GPGPU-Sim (★1.6k) — Cycle-accurate GPU simulator. 3 merged PRs: correctness bug fix (#338), perf optimization (#339), -186 lines refactoring (#340)
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Spring Initializr (★3.7k) — Official Spring project behind start.spring.io. Modernized 31 files with idiomatic Java (#1747). Named contributor in v0.24.0 release notes.
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CommitCat (★100+) — Cross-platform desktop pet reacting to Git commits in real time. Built with Rust, Tauri, React. Integrated Anthropic API for in-app AI assistant. ★100+ in 4 days.
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UnivAI — AI learning platform serving 300K+ users globally. Cut PDF analysis time from 3 min to 20 sec on 2,000-page files. App Store #1 in Education.
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Eatssu — University dining backend. Reduced monthly server costs by 85% via RDS→EC2 Docker MySQL migration.
Systems: Rust · C/C++ · Tauri Backend: Java · Spring Boot · MySQL Frontend: TypeScript · React Cloud: AWS (EC2, RDS, S3, CloudFront, Route53) AI: Python · Anthropic/OpenAI API · Adversarial ML