Hi! I'm Jehoon Park

Owner

Python, Gemini API, RAG, ReAct, ChromaDB

• Built a LangChain-like LLM application framework from scratch in Python, implementing core patterns including chain pipelines, RAG, ReAct agents, and hybrid memory systems.
• Designed provider-agnostic architecture using abstract interfaces, enabling seamless swapping of LLM providers (Gemini, OpenAI), vector databases (InMemory, ChromaDB, Pinecone), and embedding models without code changes.
• Implemented a hybrid memory system combining short-term buffer with long-term vector store retrieval, keeping token usage bounded while maintaining full conversational recall.
• Integrated Google Gemini API for real-time text generation and semantic embeddings, with ChromaDB for persistent local vector storage in a working RAG pipeline.

Contributor

Python, Google Colab

• Built a course scheduling system that generates all feasible schedules under given constraints.
• Modeled the problem as a Constraint Satisfaction Problem (CSP) and applied efficient search techniques.
• Applied constraint propagation using MAC (Maintaining Arc Consistency) based on AC-3 to prune impractical branches and reduce search complexity by 40%.

As a Founder & Software Engineer, leaded motivated group of 4 people to innovate education.

Next.js, Spring Boot, PostgreSQL

• Developed a full-stack AI-powered college admissions assistant using Next.js frontend and Spring Boot backend with PostgreSQL database.
• Implemented JWT authentication system with access/refresh tokens, Google OAuth integration, and secure file upload to Google Cloud Storage.
• Built AI-powered college recommendation system with personalized matching scores and resume-driven essay prompts using Redux state management.
• Created comprehensive application flow management with step-based navigation, shopping cart system, and dashboard progress tracking.

Image Editor project using OpenGL(GPU Acceleration)

C++, GLSL, Object-oriented Programming

• Developed a GPU-accelerated image editor that allows draw and erase on images with customizable RGB colors.
• Implemented the copy constructor, assignment operator, and destructor for 7+ classes for memory management.
• Developed an OpenGL-based graphics application leveraging GPU s, implementing custom shaders and optimized texture handling for real-time rendering.
• Used OpenGL VAO, VBO, and EBO buffers to optimize GPU rendering speed by 90%.

Jehoon's Portfolio webste by Next.js and Tailwind CSS

Next.js, Tailwind CSS

• Developed a portfolio website using Next.js and Tailwind CSS with modern UI/UX design principles.
• Implemented dynamic sliding animations for the Experience section using Intersection Observer API and CSS keyframes.
• Created modular component architecture with TypeScript interfaces for maintainable and scalable code structure.
• Integrated EmailJS for contact form functionality and deployed the website on Vercel with automatic GitHub integration.

Assembly-Level Bit Manipulation project

Assembly, C, MakeFile

• Rewrote faster and more compact versions of basic computational operations in x86-64 Assembly.
• Optimized memory usage by directly manage CPU registers and avoiding unnecessary memory operations.
• Implemented float operations without float instructions, ensuring accuracy and efficiency.
• Ensured correctness across 20+ edge cases through automated testing infrastructure like Makefile, and validators.

Terminal-based Java Project

Java

• Developed a terminal-based chess game using a 2D array to represent the board and handle piece movements.
• Developed rule-checking functions to validate piece movements (horizontal, vertical, diagonal).
• Encapsulated 6+ piece movement rules into dedicated classes using object-oriented design.
• Loaded each chess piece from a text-based code and placed it on the board accordingly.

Java-swing based Project

Java, Swing, OOP

• Developed a Java-Swing based block game using object-oriented programming principles.
• Parsed string grids to generate dynamic layouts and extract blocks using ArrayList, enabling scalable level setup.
• Implemented smooth block movement by detecting mouse drag direction and updating block position accordingly within grid constraints.
• Implemented interactive block selection by translating mouse input into grid coordinates to enable user-controlled block manipulation.