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Portfolio 2026
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Ian KimBackend Developer
All Projects
IK.
Backend Developer·2023

Arffy

Online store selling 20th century European vintage lighting and accessories

KotlinSpring Boot 2MySQLAWS EC2/S3/RDS

Project Details

01

Overview

Online store selling 20th century European vintage lighting and accessories

02

Highlights

Production Service

9 months operation experience (2023.12 ~ 2024.08)

Concurrency Control

Pessimistic locking for inventory deduction and payment duplication prevention

Security

Encrypted personal information storage using JPA Converter

Authentication

JWT token auth + OAuth 2.0 Kakao social login

Payment

PortOne API integration for credit card/simple payment system

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NailTocToc Kiosk

Flutter-based kiosk application for nail printing service

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Gokkan

Auction service for buying and selling vintage furniture