I'm a software engineer with experience in search and recommendation systems at 11st, one of Korea's leading e-commerce platforms. I'm passionate about optimizing high-traffic systems, improving code efficiency, and solving real-world problems through technology. I have a keen interest in monitoring, performance tuning, and effective incident response in large-scale distributed systems.Strong skill sets:- Proficient in Java and Spring Boot, with experience in migrating legacy systems to newer versions- In-depth knowledge of database technologies including MySQL, Redis, Elasticsearch- Skilled in performance optimization, reducing batch processing times from hours to minutes- Experienced in troubleshooting and resolving issues in high-traffic environments- Enthusiastic about developing tools to improve team efficiency and system monitoring- Advocate for knowledge sharing and continuous learning within and outside the organization- Capable of analyzing complex systems and implementing effective solutionsAs a developer, I see myself as a problem solver who actively identifies inefficiencies and implements improvements. I believe in creating reliable services by continuously studying and gaining experience in monitoring, performance optimization, and incident management. By understanding the root causes of issues and developing targeted solutions, I strive to contribute value to both the team and the product.Work highlights:- Improved recommendation batch job performance by 98%, reducing processing time from 5 hours to under 5 minutes- Developed a web-based integrated management tool for Redis and Kafka data, improving work efficiency by 87%- Created an integrated batch monitoring library, enabling 98% faster problem detection- Experience implementing non-disruptive deployment systems with rolling deploymentsAs a non-programmer, I'm committed to personal growth and enjoy sharing my knowledge through internal and external communities and conferences. I believe in fostering a culture of continuous learning and improvement.Skills: Java, Spring Boot, MyBatis, MySQL, Redis, Elasticsearch, Oracle, Docker, Git, Jenkins, Nginx