Over a two-month period, contributed to both the esphome/esphome and NabuCasa/snitun repositories, focusing on backend reliability, security, and developer experience. In esphome/esphome, addressed a critical OTA update issue by fixing an infinite loop in HTTP request handling, improving firmware update robustness for embedded devices using C++. For NabuCasa/snitun, delivered architectural enhancements including asynchronous transport redesign, PROXY protocol support, and optional AES-GCM encryption, leveraging Python and network programming expertise. Expanded documentation and streamlined the development environment with containerization and configuration management improvements, resulting in more maintainable code, enhanced security, and increased deployment flexibility across diverse networking environments.