Projects

A showcase of projects I've worked on and those I'm currently working on.

MoNew

MoNew

August 2025|Software|[Github]
Spring Boot (Java), PostgreSQL, MongoDB, Docker, AWS (S3, RDS, ECS/ECR), Github Actions

Built an AWS news community platform with a team of 6. Implemented async user tracking (Spring Events, MongoTemplate) and a read-only MongoDB model. Automated nightly S3 backups with Spring Batch. Engineered a CI/CD pipeline (GitHub Actions, Docker, ECS), reducing deployment time by 95%. Provisioned supporting AWS infrastructure (IAM, RDS, S3).

Findex

Findex

June 2025|Software|[Github]
Spring Boot (Java), PostgreSQL, Spring Data JPA, Open API

Led a 5-person team to engineer a financial analysis dashboard. Developed core backend APIs for tracking index performance, moving averages, and rankings. Optimized data processing by implementing a Java sliding window algorithm and complex PostgreSQL queries (aggregations, window functions), significantly reducing query latency.

Crown of Persuasion

Crown of Persuasion

Jan 2025|Game|[itch.io]
Unity (C#), Procreate / Clip Studio Paint

Developed a dialogue-driven visual novel where you play as a sentient crown choosing a kingdom’s ruler based on persuasive arguments; leads to 3 different endings & routes. Implemented an event-driven system and the core game mechanics. Made in ~two weeks for the Pirate Game Jam 2025 with a team of 3.

BinGenius

BinGenius

Jan 2024|AI/ML|[Github]
TensorFlow (Python), HuggingFace, React, CSS/HTML/JS, Vercel

Developed a CNN model for trash classification, fine-tuned on ~5000 images from HuggingFace with VGG16, deployed via a Flask web interface with HTML/CSS, achieving 75% accuracy and winning 3rd place in the EduHacks hackathon 2025 with a team of 4.

Built with Next.js, Tailwind CSS, MongoDB.

Copyright © 2025 LeejunKim