Hyeri
Jung.

Backend engineer with 5+ years of experience building scalable web services with Java/Kotlin and Spring Boot, based in Korea.

Profile

I'm Hyeri-Jung.
A software engineer, web developer and problem solver.

Backend developer with 5+ years of experience building and scaling web server using Java and Kotlin. Skilled in B2B services, distributed systems, and building maintainable architectures. Strong communicator who bridges the gap between technical and non-technical stakeholders.

Skills

Language

JavaKotlinJavaScript

Framework

Spring BootReactKafka

Database

MySQLMongoDB

Tools

GitSwaggerREST APITDDn8nGrafana

Experience

NAVER Cloud

Backend Developer, Full-time

Jun 2023 – Present

Developed OpenAPI for external developers. Migrated legacy notification system to Kafka-based async pipeline. Automated code review workflow using LLM models — reducing review time by 50%.

NAVER Cloud

Jun 2023 – Present

Backend Developer, Full-time

Developed OpenAPI for external developers. Migrated legacy notification system to Kafka-based async pipeline. Automated code review workflow using LLM models — reducing review time by 50%.

WorksMobile

Backend Developer, Full-time

Sep 2021 – May 2023

Led 6-member team migrating multilingual system from Python to Java/React — reducing project lead time by 80%. Built Kafka-based admin audit logging pipeline.

WorksMobile

Sep 2021 – May 2023

Backend Developer, Full-time

Led 6-member team migrating multilingual system from Python to Java/React — reducing project lead time by 80%. Built Kafka-based admin audit logging pipeline.

WorksMobile

Full-stack Developer, Intern

Jul 2021 – Aug 2021

Developed a full-stack project management web service using Java, Spring Boot, MySQL, and Vue.js. Achieved 94% test code coverage and integrated SonarQube.

WorksMobile

Jul 2021 – Aug 2021

Full-stack Developer, Intern

Developed a full-stack project management web service using Java, Spring Boot, MySQL, and Vue.js. Achieved 94% test code coverage and integrated SonarQube.

Shinsegae I&C

Software Engineer, Full-time

Jan 2020 – Jun 2021

Automated product data validation across 100K+ SKUs — reducing processing time by 50%. Built MySQL-based sales data workflows and BI dashboards.

Shinsegae I&C

Jan 2020 – Jun 2021

Software Engineer, Full-time

Automated product data validation across 100K+ SKUs — reducing processing time by 50%. Built MySQL-based sales data workflows and BI dashboards.

Projects

Langman

A responsive web application introducing Langman, a Chinese-inspired dining bar located in South Korea. Built with Next.js, TypeScript, and Tailwind CSS, developed with the assistance of Claude Code, and deployed on Vercel.

Live Demo GitHub