Yeonhee Kim | Software Engineer

📌 Project Name

Petping is a healthcare app that integrates management of pets’ walks, meals, health, insurance, and shopping.
It supports a healthy lifestyle for both users and their pets, offering features such as real-time notifications, automated insurance claims, and commerce integration.

Backend: Java, Spring, Spring Boot, JPA, MyBatis
Frontend: JavaScript, HTML, CSS
Database: MySQL, PostgreSQL, Redis
DevOps: Docker, Jenkins, Linux
Cloud Infrastructure (AWS services): EC2, S3, ECS, ElastiCache, CodeDeploy, IAM, Route 53
Monitoring & Logging: Grafana, Loki
Data Visualisation & BI tools: Redash

Led backend architecture design and overall API development
Designed and operated infrastructure with scalability and stability in mind
Collaborated across teams including PMs, designers, app/frontend developers, QA, and data analysts
Contributed to company-wide operational efficiency through real-time incident response, CS automation, and deployment pipeline setup
Spearheaded feature enhancement and quality assurance to improve user experience

🚶‍♂️ Development of walk event and push notification automation features
→ 📈 Monthly active users (MAU) increased by 30%, daily active users (DAU) rose by 20%
🤖 Automation of pet insurance claim process and integration with external commerce APIs
→ 💬 Customer service inquiries related to insurance decreased by 20%, commerce integration quality achieved 90%
🚀 CI/CD automation and blue/green zero-downtime deployment established
→ Deployment errors reduced, zero-downtime deployment rate reached 95%
📈 Built real-time log monitoring system using Grafana and Loki
→ Incident detection and response times shortened by 60%, service stability enhanced
📊 Improved data query environment with Redash
→ Automated daily reporting and statistics for operations team, cutting data processing time by 50%
✅ Provided QA-dedicated test APIs and queries
→ Test coverage increased by 40%, enabling QA self-directed testing
🔔 Automated Slack, Jira, and Confluence workflows
→ Issue sharing speed increased, communication delays reduced by 70%
📚 Established hybrid JPA and MyBatis architecture
→ Code simplification and maintainability improved, accelerated new feature development