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craig_castro

Craig Castro

@craig_castro

Electronics and Embedded Systems Engineer

United States
English, German, Spanish, French
About me
Results-driven Electronics Engineer years of experience designing high-performance hardware, advanced IoT systems, and complex PCBs. Specializing in high-speed design, ESP32/LoRa wireless integration, BMS battery architecture, and rigorous signal integrity analysis. Dedicated to delivering production-ready, DFM-compliant solutions from schematic capture to final layout. Whether you need a low-power connected sensor or a custom multi-layer board, expect precision engineering optimized to rank, convert, and scale.... Read more

Skills

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craig_castro
Craig Castro
Offline • 
Average response time: 1 hour

See my services

Printed Circuit Boards (PCB)
I will design compact iot sensor pcb with esp32, lora, GSM and low power rf layout
From$80 / projectMore details
Printed Circuit Boards (PCB)
I will design custom wearable iot pcb with esp32, sensors, battery charging, dmf ready
From$75 / projectMore details

Work experience

Apex_Systems

Senior PCB & Embedded Systems Engineer

Apex Systems • Freelance

Apr 2022 - Present • 4 yrs 7 mos

Designed over 45 custom multilayer PCBs for IoT, automotive, and wearable tech utilizing Altium Designer and KiCad. Spearheaded high-speed digital designs with controlled impedance traces and successful signal integrity (SI/PI) simulations. Developed robust firmware and custom hardware integration for ESP32, STM32, and LoRa-based remote monitoring nodes.