I have five years of working experience as a backend engineer. In my work experience, I have experience in handling high concurrency problems (3K RPS) because I am the person in charge of the Double 11 shopping festival. I know how to write reusable, readable code. I like to take challenges and learn the reasons behind each technique, so I accumulated many problem-solving skills related to developing systems, designing database schema, and handling high concurrency problems. Skills: • Program: Python, Java • Framework: Django, Spring boot • Container: Kubernetes, Helm, Docker, Docker-compose • Database: Mysql, Redis, CouchDB • Queue: Kafka, RedisQueue • Version Control: Git • CI/CD: Jenkins