Hello,
I'm Mingyu Park,
a Backend Developer.
I design and build web application servers centered on Spring Boot.
I love building and growing products together.
Core Competencies
I communicate flexibly and build robustly.
Scalable Backend Development
Proficient in building RESTful API servers with Java/Kotlin and Spring Boot. Experienced in migrating a monolithic application into a 11-service MSA along domain boundaries, and in designing inter-service communication using gRPC and Kafka.
AI & RAG Service Development
Build RAG systems from the ground up, designing embedding pipelines and vector DBs. Experienced in implementing recommendation, search, and document generation features through LLM fine-tuning and agent/MCP design, and in optimizing large-scale data search with OpenSearch.
Container-Based Service Operations
Develop and operate services on cloud environments such as AWS and GCP. Set up container environments with Docker Compose and Kubernetes (K3s), and automate deployments by building CI/CD pipelines with GitHub Actions.
Tech Stack
I work with the technologies below.
Java
Kotlin
Python
Go
Rust
Spring Boot
Spring Framework
FastAPI
Node.js
MySQL
PostgreSQL
Oracle
MongoDB
Redis
MyBatis
Prisma
JSP
OpenSearch
Ubuntu
Firebase
Flyway
Kafka
GraphQL
gRPC
Docker
Docker Compose
AWS
GCP
GKE
Nginx
GitHub Actions
Kubernetes
Cloudflare
Vercel
Git
GitLab
HTML
CSS
JavaScript
TypeScript
React
jQuery
Tailwind CSS
Axios
Capacitor
WebRTC
Spring AI
Pinecone
TensorFlow
PyTorch
Figma
Raspberry Pi
Career & Activities
Building experience through
hands-on work and diverse activities.
Career
2026.07.26. ~
Backend Developer (Spring Framework)
A company building clinical trial data management (EDC) SaaS. Over 1,000 pharmaceutical companies and CROs worldwide have adopted it, across roughly 9,000 clinical trials to date.
Java
Spring Boot
Spring Framework
Oracle
MyBatis
JSP
AWS
GitLab
jQuery
2026.04.13. ~ 2026.06.12.
Fullstack Engineer (JS, Node.js)
An AI and IoT education startup in Silicon Valley, USA, providing Raspberry Pi-based development learning environments for schools and individuals. Built a learning platform combining an in-browser development environment with assignment submission, produced lectures for students, and worked remotely.
Node.js
MongoDB
Nginx
JavaScript
Raspberry Pi
2026.01.05. ~ 2026.03.10.
Fullstack Engineer (Go, React)
An LLM-based social platform that leverages AI clones to support task delegation and social collaboration. Worked remotely for a startup based in Silicon Valley, USA, taking charge of backend and frontend development as well as infrastructure.
Python
Go
MySQL
PostgreSQL
Redis
OpenSearch
Docker
GCP
GKE
TypeScript
React
Capacitor
- Developed full-stack features (web and app) including a Go server, and operated production servers.
- Built an OpenSearch cluster and migrated existing DB-based search to improve search response times.
- Designed an embedding pipeline for conversation data and introduced vector indexing, enabling more context to be retrieved and injected.
- Designed and built the infrastructure for integrating the AI agent (OpenClaw) with the web service, automating the entire integration process from bot provisioning to Skill file generation.
- Developed Android/iOS apps with Capacitor and deployed them to the Google Play Store and App Store.
- Built a GKE-based load balancer and integrated and optimized LLM APIs to reduce fixed costs.
- Worked remotely with a Silicon Valley company, experiencing agile development centered on daily meetings.
Awards & Activities
2026.06.17
Grand Prize, 2026 Navy & Marine Corps AI Competition
Chief of Naval Operations Award
2026.05.06. ~ 2026.05.08.
Exhibited 'StartHub' at AI EXPO 2026 KOREA
2025.10.23
3rd Place, 2025 Narsha Project with Software (2nd Year)
Daegu Software Meister High School
2025.10.22. ~ 2025.10.25.
Exhibited 'StartHub' at Daegu ICT Convergence Expo
2025.09.12
Gold Prize, 7th Youth ICT Entrepreneur Competition
Daegu Metropolitan Office of Education Superintendent's Award
2025.08.03
Encouragement Award, 2025 SW Future Fill SW & AI High School Challenge
President's Award, Korea Educational Broadcasting System (EBS)
2025.05.13. ~ 2025.12.23.
Conducted 2025 Global 1:1 native-speaker video English sessions
Hi Talking
2025.02.07
Encouragement Award (Overall Category), Student Competency Certification Model Student Commendation
Daegu Software Meister High School
2024.12.30
Excellence Award, School Major Portfolio Competition
Daegu Software Meister High School
2024.12.30
2nd Place, 2024 Narsha Project with Software (1st Year)
Daegu Software Meister High School
2024.08.25
Advanced to the Finals, Microsoft HackersGround
Microsoft Korea
2024.08.21. ~ 2026.03.02.
School Broadcasting Club activity
Daegu Software Meister High School
2024.08.16
2024.05.17
Advanced to the Finals, SK Planet Smarteen App Challenge
SK Planet
2024.05.08. ~ 2025.01.08.
Conducted 2024 Global 1:1 native-speaker video English sessions
Hi Talking
2024.03.13
Joined 'B1ND', the club developing the school smart-school platform 'Dodam'
Daegu Software Meister High School
Projects
Explore the details of my key projects.
Dodam - Migrating the Architecture from Monolithic to MSA
Java
Kotlin
Spring Boot
Spring JPA
Spring Cloud Gateway
MySQL
Redis
Flyway
Kafka
gRPC
Docker Compose
AWS
Kubernetes
StartHub - Boosting Throughput 10x by Making the LLM Service Non-Blocking
Kotlin
Spring Boot
FastAPI
MySQL
Redis
Docker Compose
GCP
GitHub Actions
ShareAnything - Building a P2P File Sharing Service with WebRTC
Rust
MySQL
Flyway
Docker Compose
AWS
Nginx
Cloudflare
Vercel
TypeScript
React
Axios
WebRTC
UClone - Optimizing Large-Scale Data Search with OpenSearch
Go
MySQL
PostgreSQL
Redis
OpenSearch
Docker
GCP
UClone - Building the Integration Infrastructure for the AI Agent (OpenClaw)
Go
Docker
GCP
GKE
TypeScript
React
UClone - Building and Shipping Android/iOS Apps with Capacitor
Firebase
TypeScript
React
Capacitor
Education & Certifications
2024.03. ~ 2027.02.
Daegu Software Meister High School
Department of Software Development
- 2025 Student Competency Certification Commendation (Overall Category)
- Completed major courses: Practical Java / Practical Web Programming / Software Engineering / Database Programming / Java Programming / Web Programming / Data Structures / Introduction to Artificial Intelligence / Python Programming / Introduction to Web Programming
2026.07.03
Craftsman in Programming (National Technical Qualification)
Human Resources Development Service of Korea (HRD Korea)
2025.08.03
AI Coding Proficiency, Level 1
Korea Coding Convergence Education Institute
2025.05.24
TOPCIT (Test of Practical Competency in IT), Level 3 (502 points)
Institute of Information & Communications Technology Planning & Evaluation (IITP)
Thank you.
If you'd like to know more,
feel free to reach out.