This research aims to develop a systematic digital learning platform that integrates a course management system, interactive lessons, and online assessment tools. The system is designed to support four primary user roles: students, instructors, teaching assistants, and administrators. The technology stack employed in this development includes Nuxt for the user interface, styled with Tailwind CSS. The backend services are developed using Go (Golang) with the Fiber framework, utilizing MariaDB for database management, and the entire ecosystem is containerized based on Docker. The research findings indicate that the system effectively supports core functionalities, including online examinations with automated grading, digital certification, Voucher management, and integrated payments PromptPay. System evaluation results are as follows: User satisfaction was rated at a "Good" level with a mean score of 4.33. Unit testing confirmed that all individual modules function correctly, while integration testing demonstrated seamless interoperability between components. Performance benchmarking was conducted using Grafana K6, Vegeta, and Autocannon showed a maximum response time of 7.75 seconds under peak load. Consequently, this system is considered ready for the real-world deployment.