Bill Butler
EXPERTISE
BIO
I'm an embedded systems consultant with 20+ years of experience in low-level firmware, RTOS, and hardware interfacing (SPI, I2C, UART, CAN). I specialize in ARM Cortex-M (STM32), PIC, and bare-metal or RTOS-based development. My background includes motor control, sensor integration, bootloaders, and driver development. I’ve led full lifecycle projects—from board bring-up to production—and bring a consultative mindset shaped by running my own MSP business. I work well independently or in agile teams and am seeking 20–30 hours/week of remote embedded consulting work where I can quickly add value.
WORK EXPERIENCE
Senior Embedded Software Engineer (Contractor)
Ion Design
January 2019 - December 2021
Delivered embedded software for a battery-powered surgical device for Johnson and Johnson utilizing STM32 ARM MCUs with Bluetooth communication. Designed and debugged firmware for board bring-up, motor controllers, Hall sensors, and custom power supplies.
Principal Software Engineer - Firmware Lead
Heads-Up Inc
December 2010 - October 2017
Led architecture and development team of real-time firmware for aviation electronics using Agile methodologies to achieve project milestones. Conducted board bring-up, driver development, and system integration for ARM and Atom platform while integrating QNX and embedded Linux.
System Engineer – Remote Manageability / Platform Security
Dell
January 2009 - September 2010
Collaborated with cross-functional teams to implement Trusted Execution Technology and remote manageability solutions. Reviewed test plans, wrote technical white papers, and supported platform TPM provisioning
Senior Embedded Software Engineer (Contractor)
CommScope
September 2010 - December 2010
Board bringup on Arm32 board. Installed U-Boot and embedded Linux
Principal Software Engineer - Firmware Team Lead
Estech Systems Inc,
March 2002 - December 2008
Designed and tested real-time firmware for telephony equipment integrating Linux on ARM9 and TI DSP platforms. Developed board bring-up, low-level drivers and ported DSP algorithms for echo cancellation, tone generation, and codec optimizations. Managed a team of five engineers, ensuring on-time delivery of complex projects.
Senior Embedded Software Engineer (Contractor)
Advanced IP Communication
January 2002 - March 2002
Developed VoIP firmware for Motorola Coldfire processors and TMS32054 DSP, including board bring-up, RTEMS RTOS and driver development.
Senior Embedded Software Engineer
Comspace Corp
January 2000 - December 2001
Designed real-time firmware for RF spectrum efficiency systems using Motorola MPC860 and VLSI ARM processors.
Senior Embedded Software Engineer
Vari*Lite
January 1995 - January 2000
Created embedded firmware for concert lighting systems on Motorola HC12, 68040, and TI DSP platforms.
Software Engineer/Project Lead
Electrospace Systems Inc,
January 1990 - January 1995
Developed embedded control systems for earth station antennas using VRTX and Motorola MC68xxx processors.
EDUCATION
Bacholor of Science
Texas A&M University , Present
Computer Science / Electrical Engineering
Verified Embedded Systems Developer
8+ years of experience
Preferred commitment: Part Time
Languages
Skills
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