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Jinyoung
Dev
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On temporary leave

Creating User-Centered Web Experiences

I am dedicated to creating intuitive and engaging web experiences. My goal is not just to build functional websites but to create meaningful value for users. Explore this portfolio to see my journey.

Real-world Results

Featured Projects

See how I transformed concepts into engaging digital experiences.

Swingvy•2024

AI based Q&A system(RAG)

  • Develop a system to answer questions based on Singapore's labour laws
  • GCP + LLM (Google Gemini) + Document based search
  • RAG(Retrieval augmented generation)
AI based Q&A system(RAG)
Swingvy•2021-2025

Leave server API

  • Responsible for developing API for Leave server that provides annual leave application/approval function for Swingvy customers
  • Spring Boot 2 / JPA / Spring Cloud / TDD
Leave server API
Swingvy•2020-2021

Time&Attendance server API

  • I was in charge of developing Swingvy Time, a service that allows Swingvy customers to manage their attendance.
  • Spring Boot 2 / JPA / Spring Cloud / GraphQL
Time&Attendance server API
Swingvy•2018-2019

Employee Benefits server API

  • I participated in the development of the Swingvy Benefits service from start to finish, which allows Swingvy users to easily purchase insurance with just a few clicks, targeting Malaysia and Singapore.
  • Spring Boot 2 / JPA / Spring Cloud / Kotlin / TDD (Test coverage: +80%)
Employee Benefits server API
Swingvy•2017

MSA Migration

  • Led a project to transform a single Spring Boot-based web service into a Microservice Architecture using Spring Cloud. Responsible for modifying the system from a single server to three servers working organically together.
  • Spring Boot 1.5 / Spring Cloud (Spring Cloud Netflix)
MSA Migration
Swingvy•2017-Present

DevOps

  • Responsible for migrating and maintaining all company infrastructure to AWS
  • ECS, RDS, ElastiCache, Lambda, ELB(ALB), CloudFront, ALB
  • Set up and operated company build servers using Jenkins
DevOps
Line Plus•2014-2016

Line Rangers server API

  • Responsible for developing Backend API for Line Rangers mobile game, which recorded over 10 million downloads
  • Spring Framework / MyBatis / Redis
Line Rangers server API

Our Experience

Companies I’ve Worked With

Explore the innovative companies where I have contributed my expertise and passion.

NAVER
NAVER
Intern
2013.06 - 2013.12

NAVER is South Korea's largest internet company, operating the country's most popular search engine and web portal. The company provides a wide range of online services including email, news, shopping, and digital payments, while also achieving global success with innovative services like NAVER Webtoon and LINE messenger

LINE PLUS
LINE PLUS
Back-end engineer
2014.02 - 2016.10

LINE is broadening its range of mobile-first services to include lifestyle, fintech, Web3, contents, e-commerce, gaming, entertainment, AI, and more.

SWINGVY
SWINGVY
Back-end engineer
2016.10 - Present

Swingvy is a cloud-based HR and payroll management platform headquartered in Singapore, serving businesses across Asia Pacific. The company provides an all-in-one HR solution that streamlines various processes including payroll, benefits administration, leave management, and employee onboarding for small and medium-sized enterprises.

NAVER
NAVER
Intern
2013.06 - 2013.12

NAVER is South Korea's largest internet company, operating the country's most popular search engine and web portal. The company provides a wide range of online services including email, news, shopping, and digital payments, while also achieving global success with innovative services like NAVER Webtoon and LINE messenger

LINE PLUS
LINE PLUS
Back-end engineer
2014.02 - 2016.10

LINE is broadening its range of mobile-first services to include lifestyle, fintech, Web3, contents, e-commerce, gaming, entertainment, AI, and more.

SWINGVY
SWINGVY
Back-end engineer
2016.10 - Present

Swingvy is a cloud-based HR and payroll management platform headquartered in Singapore, serving businesses across Asia Pacific. The company provides an all-in-one HR solution that streamlines various processes including payroll, benefits administration, leave management, and employee onboarding for small and medium-sized enterprises.

About Me

A Glimpse Into My World

Explore the technologies I use as a developer and the tools and services I leverage to enhance productivity.

My Techs

JavaScript(TS)
React
Java
Kotlin
Python
Spring Boot
Next.js
MacOS
AWS
GCP
Langchain
Docker
FastAPI
IntelliJ
Visual Studio
Claude
Gemini
Vercel
JavaScript(TS)
React
Java
Kotlin
Python
Spring Boot
Next.js
MacOS
AWS
GCP
Langchain
Docker
FastAPI
IntelliJ
Visual Studio
Claude
Gemini
Vercel
JavaScript(TS)
React
Java
Kotlin
Python
Spring Boot
Next.js
MacOS
AWS
GCP
Langchain
Docker
FastAPI
IntelliJ
Visual Studio
Claude
Gemini
Vercel
JavaScript(TS)
React
Java
Kotlin
Python
Spring Boot
Next.js
MacOS
AWS
GCP
Langchain
Docker
FastAPI
IntelliJ
Visual Studio
Claude
Gemini
Vercel

BITS OF CONVERSATION

Debug Together, Build Together

From code reviews to coffee chats, I'm here to explore ideas, tackle challenges, and maybe fix that semicolon that's been bothering you!

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