울이

Love Code. Work. Sports.

Introduction

8년차 소프트웨어 엔지니어로서 다양한 비즈니스 문제를 기술로 해결해왔습니다.

Java, Kotlin, Python 등 다양한 언어와 기술 스택을 활용하여 안정적이고 확장 가능한(Scalable) 시스템을 구축하는 데 집중하고 있습니다. 특히 대규모 트래픽 환경에서의 분산 아키텍처 설계와 Kafka 등을 활용한 실시간 데이터 파이프라인 구축에 깊은 관심을 가지고 있습니다.

단순히 기능 구현을 넘어, 유지보수 성과 시스템의 효율성을 고려한 설계를 지향합니다. 새로운 기술을 탐구하고 이를 바탕으로 팀과 함께 성장하며, 복잡한 문제를 명료하게 해결해 나가는 과정을 즐깁니다.

Introduction

Backend engineer with 8+ years of experience designing and building large-scale distributed systems.

I have deep expertise in building reliable and scalable systems using Java, Kotlin, Python, and various modern tech stacks. My focus lies in designing distributed architectures for high-traffic environments and building real-time data pipelines using Kafka and Flink.

Beyond implementation, I value system designs that prioritize maintainability and efficiency. I enjoy exploring new technologies, growing with the team, and simplifying complex technical problems.

Skills

Backend

Java, Kotlin, Python, Spring Boot, Django/Flask, FastAPI

Data & Streaming

Kafka, Flink, AWS Kinesis, PostgreSQL, MySQL, Redis, Elasticsearch

DevOps & Cloud

AWS, Docker, Kubernetes, Helm, ArgoCD, ArgoFlow

Frontend

JavaScript, TypeScript, React, Vue

Experience

Sr. Staff Engineer @ Coupang

2025.11 - Present

GOT WMS Inventory Inbound

  • 풀필먼트 센터의 입고 및 적재 프로세스를 최적화하는 WMS 시스템 개발
  • 입고 물량 예측 및 적재 위치 최적화를 통한 물류 효율성 개선

Tech Stack: Java, Spring Boot, Kafka, Kubernetes, Redis, AWS

Senior Backend Engineer @ CJ OliveYoung

2025.06 - 2025.09

GMS (Global Mall System)

  • 올리브영 글로벌몰 WMS 시스템 고도화
  • 입고/적치 프로세스 모듈화, 재고보충 시스템 개선 및 선재고 시스템 신규 개발

Tech Stack: Java, Spring Boot, Kafka, Kubernetes, Redis, AWS

Backend Engineer @ 42dot (Hyundai Motor Group)

2022.05 - 2025.06

Fleet Management System

  • 자율주행 물류 차량 관제 플랫폼 및 실시간 데이터 시스템 설계/구축
  • 실시간 차량 관리 및 관제 시스템 SaaS 개발 (FMS Core 설계)
  • 차량 드라이버 시스템 설계 및 개발 (Admin-Driver 데이터 동기화)
  • 차량 데이터 수집 파이프라인 구축 (Kafka 기반 스트리밍)
  • 사고탐지 데이터 수집 및 리포트 시스템 구축

Tech Stack: Kotlin, Spring Boot, PostgreSQL, Redis, Kafka, K8s, ArgoCD

Backend Engineer @ Dreamus Company (SKT FLO)

2022.02 - 2022.04

정산시스템

  • 기존 AWS Lambda 기반 배치 작업을 ArgoFlow로 전환 및 온프레미스 정산시스템 클라우드 전환

Tech Stack: Python, FastAPI, ArgoFlow, ArgoCD, Docker, K8s

Backend Engineer @ SOCAR

2020.02 - 2022.02

모빌리티 플랫폼

  • 차량 IoT 데이터 파이프라인 구축 (AWS IoT Core, Kafka, Flink)
  • 차량 이상상태 탐지 및 운영 자동화 시스템 개발
  • 차량 위치 및 상태 모니터링 시스템 개발

Tech Stack: Python, Django, Flask, Flink, AWS MSK/IoT, K8s

Software Engineer @ Unipoint

2018.08 - 2020.02

생보부동산신탁 차세대 ERP 개발 및 HR-SCM 플랫폼 개발

Tech Stack: Java, Spring, JavaScript

Education

Dongguk University

2016.03 - 2018.02

컴퓨터공학 석사

연구분야: 컴퓨터 네트워크, 무선 통신 (IEEE 802.11p)

Publications

  • Extended IEEE 802.11p using distance-based grouping Algorithm International Journal of Advanced Computer Research (IJACR) | 2019.01

  • Extended IEEE 802.11p based on Distance in Automotive Systems International Journal of Science and Engineering for Smart Vehicles | 2018.02

  • WAVE 통신의 긴급 데이터 수신을 위한 긴급 통신 제안 한국통신학회 학술대회 논문집 | 2017.02

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Skills

Backend

Java, Kotlin, Python, Spring Boot, Django/Flask, FastAPI

Data & Streaming

Kafka, Flink, AWS Kinesis, PostgreSQL, MySQL, Redis, Elasticsearch

DevOps & Cloud

AWS, Docker, Kubernetes, Helm, ArgoCD, ArgoFlow

Frontend

JavaScript, TypeScript, React, Vue

Experience

Sr. Staff Engineer @ Coupang

2025.11 - Present

GOT WMS Inventory Inbound

  • Developing WMS system to optimize inbound and storage processes at fulfillment centers
  • Improving logistics efficiency through inbound volume prediction and storage location optimization

Tech Stack: Java, Spring Boot, Kafka, Kubernetes, Redis, AWS

Senior Backend Engineer @ CJ OliveYoung

2025.06 - 2025.09

GMS (Global Mall System)

  • Enhanced WMS system for OliveYoung global mall
  • Modularized inbound/storage processes, improved inventory replenishment system, and developed new pre-inventory system

Tech Stack: Java, Spring Boot, Kafka, Kubernetes, Redis, AWS

Backend Engineer @ 42dot (Hyundai Motor Group)

2022.05 - 2025.06

Fleet Management System

  • Designed and built autonomous logistics vehicle control platform and real-time data systems
  • Developed real-time vehicle management and control system SaaS (FMS Core design)
  • Designed and developed vehicle driver system (Admin-Driver data synchronization)
  • Built vehicle data collection pipeline (Kafka-based streaming)
  • Built accident detection data collection and reporting system

Tech Stack: Kotlin, Spring Boot, PostgreSQL, Redis, Kafka, K8s, ArgoCD

Backend Engineer @ Dreamus Company (SKT FLO)

2022.02 - 2022.04

Settlement System

  • Migrated existing AWS Lambda-based batch jobs to ArgoFlow and transitioned on-premise settlement system to cloud

Tech Stack: Python, FastAPI, ArgoFlow, ArgoCD, Docker, K8s

Backend Engineer @ SOCAR

2020.02 - 2022.02

Mobility Platform

  • Built vehicle IoT data pipeline (AWS IoT Core, Kafka, Flink)
  • Developed vehicle anomaly detection and operations automation system
  • Developed vehicle location and status monitoring system

Tech Stack: Python, Django, Flask, Flink, AWS MSK/IoT, K8s

Software Engineer @ Unipoint

2018.08 - 2020.02

Developed next-generation ERP for life insurance real estate trust and HR-SCM platform

Tech Stack: Java, Spring, JavaScript

Education

Dongguk University

2016.03 - 2018.02

M.S. in Computer Engineering

Research: Computer Networks, Wireless Communication (IEEE 802.11p)

Publications

  • Extended IEEE 802.11p using distance-based grouping Algorithm International Journal of Advanced Computer Research (IJACR) | 2019.01

  • Extended IEEE 802.11p based on Distance in Automotive Systems International Journal of Science and Engineering for Smart Vehicles | 2018.02

  • Emergency Communication Proposal for Urgent Data Reception in WAVE Communication Journal of the Korean Institute of Communications | 2017.02

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