- IoT industry, real-time video surveillance platform.- Optimized the codebase by improving the coexistence of multiple code architectures, integrating redundant components, completing gRPC middleware, and adjusting CI pipeline.- Refactored the logger and integrated it with wrapped error and middleware, improving observability and making debugging easier.- Gradually completed software development documentation (such as sequence diagrams), then identified and fixed bugs and slow query, and added unit testing.[Golang(Gin), AWS IoT, DynamoDB, S3, RabbitMQ, GraphQL, gRPC]

- Social media app (beanfun!).- Developed in microservices architecture, including RESTful API gateways and over 20 downstream services interacting through gRPC.- Focused on developing the SHOW post module, including features such as scheduled posts, post scoring calculation, NSFW detection, and reCAPTCHA verification.- Adopted Scrum to drive the design and development of new product lines, such as an SSO server.- Wrote and adjusted K8s and GitLab CI/CD YAML for deployment.- Wrote clear and understandable software documentation, used in both design and code reviews.[Golang, PostgreSQL, Redis, Kafka, Gitlab CI/CD, Kubenetes, Grafana]

- Digital Marketing, primarily focused on development of internal systems.- Designed and developed a platform to assist operators in managing campaign versions and submitting or packaging tracking codes from various media sources.- Maintained internal ERP and other performance data platforms used by the advertising business.- Transitioned to SRE, managing cloud infrastructure, writing detailed documentation, CI/CD, collecting metrics, tracking resource consumption and reporting, and monitoring.- Adjusted cloud infrastructure (Private Subnet, EKS) and security setup based on recommendations from AWS consultants.[PHP(Yii2), MariaDB, Memcached, SQS, AWS, K3s, Grafana/Prometheus]

- Worked as a full-stack engineer, developing an HR system using PHP and jQuery.- Developed an ERP system as a backend engineer using Golang.- Implemented third-party login functionality.- Integrated third-party calendars and contacts, asynchronously processing large amounts of synchronized data.- Adjusted RBAC to manage data visibility permissions.[Golang(Echo), PHP(CodeIgniter3), jQuery, MySQL, MQ]