With the growth of popularity of remote education, the need for fully remote laboratories for technical specialties arises. This need is especially pronounced in the field of hardware engineering, where it's important for students to gain practical knowledge and skills by interacting with real-world physical equipment like power electronics circuits, FPGA boards, microcontrollers, SDRs, and other devices. Some core features and subsystems like authentication and authorization of almost every remote laboratory system are implemented out of the box in specialized Remote Laboratory Management System frameworks like LabDicoveryEngine. This article describes a back-end architecture for a power electronics laboratory built using the LabDiscoveryEngine remote learning management system. The proposed architecture utilizes Node.js technology for the laboratory server implementation, enabling efficient bidirectional communication between client applications and hardware components through custom application protocols. The solution includes detailed multi-layer architecture design, hardware component integration, and protocol specifications for client-server and hardware interactions. This approach aims to improve the quality of remote education while providing a flexible foundation that can be adapted for other types of remote laboratories.