Worked on the meshtastic/firmware repository to enhance the reliability and security of UDP multicast relays to LoRa radios. Addressed a bug where the pki_encrypted flag and public_key fields could be lost during packet relaying, which previously led to misinterpretation or loss of packets. Improved the firmware by introducing zeroization of MeshPacket structures before decoding, effectively preventing potential data leakage. These updates brought UDP multicast behavior in line with MQTT ingress, ensuring consistent security and decryptability across protocols. The work demonstrated strong skills in C++, embedded systems, and network programming, focusing on data integrity and secure radio uplink communication.