Wilfrido Tamayo

Dynamic Embedded Engineer with over 15 years of industry expertise in embedded software development, Real-Time Operating Systems (RTOS), and Embedded Linux applications. Seeking to transition into a stimulating role to leverage my proven track record of success in C based micro-controller programming, and proficiency in C++ for embedded Linux platforms within medical devices and network gateways. Eager to contribute strong analytical skills, meticulous attention to detail, and a passion for creating efficient and innovative software solutions to drive the success of cutting-edge projects.

Sierra Wireless, Richmond, BC/Hybrid 2020 – 2023
Embedded Software Engineer
Contributed to the development of firmware for Telemetry devices and Network gateways using C and C++.
● Led firmware development and provided L3/L4 customer support for GNX Telemetry device.
● Designed and implemented C code to configure real-time u-blox and Sierra Wireless cellular modems
using AT commands, facilitating over-the-air firmware updates and modem management.
● Developed C code to decode J1939, J1708, and OBDII PGNs from CAN bus, enhancing data extraction capabilities.
● Spearheaded the migration of numerous devices from end-of-life Sierra Wireless configuration server to dedicated customer site servers, ensuring uninterrupted service.
● Engineered UI and dual band satellite features for a Linux-based wireless/cellular gateway, utilizing C++ for enhanced functionality.
● Actively participated in the validation of Telemetry features embedded within the wireless/cellular
gateway. 

Blackline Safety, Calgary, AB 2019 – 2020
Embedded Software Engineer
● Contributed to the advancement of IoT-enabled oil and gas sensors through C/C++ development
encompassing feature enhancement, bug resolution, and code optimization.
● Pioneered the creation of C code leveraging a Cypress BLE stack for an innovative embedded contact tracing application. Utilized RSSI magnitude to accurately gauge employee proximity, thus ensuring effective COVID safety measures.
● Engineered C code to perform comprehensive scanning and parsing of BLE data originating from
Bluetooth-enabled Pressure Sensors installed in tanks.
 

Meade Instruments, Remote 2018 – 2019
Embedded Software Contractor
● Provided pivotal support across various firmware-oriented projects, ensuring seamless operations and performance optimization.
● Resolved critical software concerns within both C/C# PC and embedded applications, specifically
addressing challenges related to telescope firmware updates, enhancing overall reliability.
● Innovated an interface that seamlessly connected RS-232 with cell phone BLE by skillfully leveraging the ESP32's integrated stack.
 

Cadex Electronics, Richmond, BC 2013 – 2017
Senior Embedded Software Engineer
Drove the development of C code to implement cutting-edge battery charging and reconditioning algorithms across Li, SLA, and NiMH batteries on FreeRTOS-based systems.● Created a robust low-level C driver for HQ/HDQ 1-wire interface, seamlessly integrating with TI/Maxim
battery gauges to enhance battery management.
● Demonstrated expertise in GUI application development, utilizing C++ on embedded Linux platforms, to deliver sophisticated interfaces for medical devices.
● Spearheaded the creation of an innovative embedded web server, harnessing a Cortex M0 processor and a Wiznet W5500 TCP/IP interface. Leveraged C and FreeRTOS to enable seamless communication, while also developing HTML and JavaScript components. These components supported Google Visualizers, IoT connectivity, and facilitated Over-The-Air Programming (OTAP) on the battery charger.
 

Carmanah Technologies, Burnaby, BC 2011 – 2013
Design Engineer
Contributed to the successful implementation of C firmware for traffic controllers empowered by rechargeable Li-
ion batteries.
● Engineered sophisticated low-level C code, facilitating seamless communication between an MSP430- based solar-powered traffic control beacon and an Axonn STX2 satellite transmitter. This integration enabled the beacon to efficiently broadcast crucial data through Global Star emails, encompassing state- of-health (SOH) updates, battery and photovoltaic (PV) voltages, temperature readings, and precise GPS positioning.
 

Meade Instruments, Irvine, CA 2007 – 2011
Embedded Software Engineer
Contributed to multiple firmware-focused projects, encompassing new feature implementation and manufacturing support.
● Innovated C firmware solutions to introduce novel functionalities to auto-aligning/tracking telescopes, including the development of GPS drivers and hand controller interfaces. Resolved longstanding firmware bugs that pertained to star tracking performance.
● Assisted in manufacturing operations in China by providing comprehensive instructions and
documentation for firmware updates of PIC/MCUs. Contributed to product calibration and validation
firmware, ensuring seamless production processes.
 

Sony Electronics, San Diego, CA 2001 – 2006
Software Design Engineer
● Contributed to the development of firmware, crafting intuitive GUIs for Sony TV sets, and implementing low-level C for audio device drivers to support Surround Sound, Sports and Music

BSc. Electrical Engineering