SangHyun Bang — Java · Spring Boot Backend Developer
Java · Spring Boot Backend Developer
I build services with Java and Spring Boot, and most of my work has been on spots where “the feature works but the data is wrong” — concurrent requests getting the same sequence number, permissions that changed while already-issued tokens stayed the same, events that went missing and left services out of sync. I built my personal projects together with AI coding agents, so I look at what a test actually verifies before trusting a “passed” report.
I studied business administration and economics first, and have experience in data analysis and in assisting reinforcement-learning research.
Career so far
레이시스
Backend Developer · ERP accounting module · Node.js, MariaDB
Programmers Dev Course · MSA Spring AI Intensive→
Spring Cloud · MSA backend — BARO FARM (auth boundary)
2025 Tourism Data Utilization Competition · Korea Tourism Organization→
Entry: HeatTrip · Excellence Award (2025.11)
Gangnam HiMedia · KDT Full-stack Bootcamp→
Spring · React full-stack — Excellence Award for the graduation project (OREUM, hiking community)
Education
- Academic Credit Bank System · B.Eng. in Computer Engineering 2025.07 – 2026.08
- Sogang University · Business Administration & Economics, double major (Summa Cum Laude) 2015.03 – 2023.02
- Chung-Ang University Graduate School · M.S. program in Artificial Intelligence (on leave) 2023.09 –
Full experience, certifications and awards are in my resume.
Let's connect
I want to understand how users and data flow, and build reliable services together.