Summary
Work History
Education
Skills
Internships
Extra-Curricular Activity
Others
Timeline
Generic

JaeHyun Park

"Be prepared to seize opportunities"
Github: ParkJh38

Summary

Aspiring Computer Science Engineer with strong interest in Medical Image Denoising and Digital HealthCare. Experienced in developing Spring Boot based services and cloud infrastructure using AWS. Skilled in RESTful API design, database optimization, and cross-functional collaboration through real-world software and research projects.

Work History

OpenStep

Personalized Open Source Recommendation Platform | Mar. 2025 – Jun. 2025

TEAM LEADER, PRESENTER

  • Capstone Design project for graduation work for one semester
  • Developed backend server using Spring Boot and designed REST APIs for personalized open-source project recommendations.
  • Collected GitHub repository and issue data using GraphQL API and implemented recommendation logic based on user interests.
  • Applied Redis caching and MySQL query optimization to reduce API latency by over 80%.
  • Implemented GitHub issue summarization feature via OpenAPI and prompt engineering.

DuruDuru

Refrigerator Ingredient Management Service | Dec. 2024 – Feb. 2025

BACKEND TEAM LEADER

  • Project for UMC 7th 2025 Winter Demo Conference
  • Integrated CLOVA OCR API to extract text from receipts and automatically register ingredients into the database.
  • Defined API specifications using Swagger and coordinated team development as backend lead.
  • Containerized the backend with Docker and configured MySQL-based CRUD features.
  • Deployed infrastructure using AWS EC2, RDS, and implemented CI/CD pipeline with GitHub Actions and Docker.

AutoScheduler

PDF & Web-based Automated Calendar Platform | Sep. 2024 – Dec. 2024

BACKEND DEVELOPER

  • Capstone Design(1) project for graduation work for one semester
  • Developed a backend system using Spring Boot to automate calendar event generation from PDFs and academic websites.
  • Utilized Selenium to crawl and extract academic schedules, and structured them for database storage.
  • Designed PostgreSQL schema and implemented calendar APIs, including features for event deduplication and merging.
  • Collaborated with frontend developers to optimize API response time and maintain consistent specifications.
  • Deployed the service on AWS EC2 and RDS, and established a CI/CD pipeline using GitHub Actions and Docker.

Codiary

Technical Blog Platform for developers | June. 2024 – Aug. 2024

BACKEND DEVELOPER

  • Project for UMC 6th 2024 Summer Demo Conference
  • Developed backend server using Spring Boot and designed REST APIs for Blogging, Co-authoring, and category management.
  • Implemented pagination and filtering features for team, project, and personal post feeds.
  • Designed MySQL-based schema supporting user-post relationships and collaboration logic.
  • Deployed service via Docker on AWS EC2, and built CI/CD pipeline using GitHub Actions.

ChatDa

Chat based personal Diary Service using ChatGPT | Mar. 2024 – Jun. 2024

BACKEND DEVELOPER

  • Project for OpenSource SW Development course
  • Applied semantic Embedding-based intent detection by using compared cosine similarity against pre-embedded 'exit intent' phrases to detect session termination.
  • Implemented moderation logic using OpenAI's moderation API to flag inappropriate content and provide adaptive responses.

Education

Chung-Ang University
Seoul

Skills

Languages Python, Java, C/C

Internships

Perception and Intelligence Lab (PILab)

UNDERGRADUATE RESEARCHER | July. 2025 – Sep. 2025 

  • Conducted CT denoising research using deep learning and computer vision techniques
  • Ran experiments with image restoration models (e.g., NAFNet) on low-dose CT datasets
  • Participated in weekly research paper seminars and project discussions

Extra-Curricular Activity

University Makeus Challenge 7th  | June. 2024 – Feb. 2025

BACKEND SENIOR DEVELOPER, TEAM LEADER

  • Led a backend team (PM, 4 BE, 3 FE, 1 Designer) to build and deploy a SpringBoot server based IOS APP service.
  • Oversaw overall backend architecture, managed task allocation, and ensured code quality through reviews and documentation.
  • Collaborated cross-functionally to define scalable API interfaces and improve development workflow.
  • Mentored junior backend members and contributed to project success with technical leadership and communication.


University Makeus Challenge 6th | Mar. 2024 – June. 2024

BACKEND STUDY MEMBER, DEVELOPER

  • Participated as a backend developer in a cross-functional student project team.
  • Developed RESTful APIs using SpringBoot, and collaborated with frontend and mobile developers to deliver user-facing features.
  • Practiced collaborative Git workflows and API integration in a fast-paced development environment.


Kim-H-J Mathematics Academy, Daechi-Dong | Dec. 2023 – Nov. 2024

TEACHING ASSISTANT

  • Taught mathematics to middle and high school students in a high-performance private academy.
  • Supervised daily mock exams, graded assignments, and provided academic feedback.
  • Assisted in creating supplemental problem sets and managing class operations.

Others

English Proficiency

  • 2023.09 - TOEIC 945
  • 2025.08 - TOEIC Speaking [Expected AH]


Certification

  • 2025.09 - Information Processing Engineer (정보처리기사) [Certified, Awaiting Official Result - Expected Sep.12]
  • 2022.09 - Chinese Character Proficiency Level 3 (한자급수3급, Korean Chamber of Commerce and Industry)

Timeline

OpenStep

DuruDuru

AutoScheduler

Codiary

ChatDa

Chung-Ang University

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JaeHyun Park"Be prepared to seize opportunities"