Architected and delivered the Human-Machine Interface (HMI) for commercial electric vehicle (EV) charging stations on Texas Instruments AM665x and AM437x silicon.

Built production-signed Yocto Linux images from scratch, establishing a full hardware Root-of-Trust and signed Secure Boot chain protecting charging telemetry and transaction integrity.

Developed and integrated custom Linux kernel modules for GSM and RFID reader peripherals. Tuned MediaTek MT7668 Wi-Fi and Bluetooth drivers for outdoor EV charger environments.

Integrated Hardware Security Module (HSM) interfaces into user-space applications for cryptographic key management, secure storage, and tamper-resistant firmware execution.