Principal Engineer2012 - PRESENTEmbedded Engineering Solutions, LLC
Technologies: Embedded C on TI, Microchip, Atmel, ST Devices
- Developed a three-phase motor drive optimized for solar applications.
- Built an electro-mechanical chest compressor product for automated CPR.
- Developed the test protocol for an embedded medical communication device for remote medical monitoring.
- Built a motor driver and pressure monitor for a blood pressure cuff for a medical kiosk.
- Designed and developed an eye tracking and patient feedback solution for a medical kiosk.
- Designed a remote battery monitoring device for power monitoring with Azure IoT integration.
- Worked with a team building a smart pet door with automated controls, cloud integration with Azure IoT, and a mobile app for control.
- Designed an access control device that used BLE connection to a mobile device and geofencing functionality to provide indication of authorization for users to access controlled areas.
- Worked with a team designing an inventory control system with remote devices wirelessly communicating with a central on-site server and database.
- Worked with a team designing an advanced LED control system driving up to 80 multi-color LEDs with simultaneous color mixing, patterns and music synchronization.
Embedded Firmware Engineer2018 - 2018Switchmate (via Toptal)
Technologies: C, BLE, Wifi, IoT
- Worked with a team developing a suite of IoT home automation products including light switches, power sockets, cameras, and sensors.
- Integrated all devices with both a cloud service and mobile devices.
Embedded Software Developer2016 - 2017WaterGuru, Inc. (via Toptal)
Technologies: Bluetooth Low Energy, Embedded C, Atmel, Texas Instruments
- Developed low-level functions to support communication over BLE via an external BLE controller.
- Defined and implemented an encrypted protocol for secure communication.
- Developed and verified random number generation using hardware entropy sources.
- Rewrote various functions to improve space efficiency.
- Implemented a secure, three-way handshaking protocol between the embedded device, mobile device, and server.
Engineering Manager, Industrial Products2009 - 2012Ecotality Inc
Technologies: Embedded C on Atmel, Microchip, Motorola Devices
- Developed and patented a unique methodology for measuring current on vehicle battery applications.
- Developed and patented a system for simultaneously charging multiple vehicle battery systems.
- Developed an embedded interface platform that unified multiple independently maintained product platforms.
- Managed a multi-disciplinary team of engineers to develop new products for the industrial vehicle battery charging market.
- Developed a multi-site, multi-vehicle battery data monitoring and control system under a Department of Energy contract.
Lead Project Engineer2008 - 2009Power Efficiency Corporation
Technologies: Embedded C on dsPIC
- Led a team of engineers developing motor starters and energy efficient motor drives.
- Implemented closed loop control algorithms for output voltage control.
- Developed a test protocol used to validate all new products and functional changes.
- Implemented a system of bug tracking and revision control to improve quality and reduce field failures.
- Worked with the certifying authority to complete all necessary testing for UL certification of the product.
Embedded Systems Engineer2008 - 2008Aegis Technologies
Technologies: Embedded Java, Embedded C
- Deployed a TCP/IP stack on an embedded encryption platform—used an existing stack customized for the specific needs of the application.
- Wrote an ARP implementation that was missing from the TCP/IP stack available for the embedded processor in the product.
- Developed the communication protocol to manage data transfer between two different embedded devices and ensured data integrity while minimizing latency.
- Developed hardware requirements to ensure compliance with strict electric utility communication protocols.
- Optimized embedded Java handling and packetization of data for improved throughput and reduced latency.