Developed firmware for automotive asset management products, both new and from previous tenure. Specified boot loader encryption and key distribution for a new product line. Designed and implemented boot loader firmware framework and firmware signing utilities. • Pre-COVID, worked directly with a customer to specify an Application Firmware Interface for business logic to be maintained by their developers.

Developed firmware for a novel, in-vitro diagnostic device, incorporating three, distinct microcontrollers (touch input, display/control and a pre-release, electrochemistry cell controller/analyzer). Specified microcontrollers, pin assignments, MCU-internal signal routing configuration and chip-to-chip communications interfaces; contributed to circuit designs as needed.• Designed a discrete circuit enabling two microcontrollers to control their own and each other’s power domains and resets, to support fault recovery.

Developed firmware for automotive rental Vehicle Management System products, with particular focus on stabilizing firmware architecture made brittle in rapid development or porting from radically different (including non-RTOS) predecessor platforms.• Implemented lockless, GPS buffering and transfer to alleviate severe data and position loss due to RTOS queue overflow under heavy load.

Ported, tested and documented improvement patches to multiple, existing releases of control software for high-precision (1-20µm) robots transferring IC photo-lithography reticles (masks) between internal / external storage and imaging stage

Developed firmware, API and post-silicon evaluation environment for serializer/de-serializer (SerDes) cores used in Broadcom ICs for Ethernet and other multi-GHz data connectivity.

Developed new-product firmware and PSoC digital / analog configurations using existing and new target boards, as well as evaluation kits for isolated experiments. Participated in standards committee regarding forthcoming mandated features. Aided systems engineering with line-synchronous, high-rate sampling to reduce harmonic losses. Mentored a new hire with principally academic experience.• Designed a synchronous sample-and-hold subsystem using uncommitted analog components in an existing, PSoC-5LP-based architecture, eliminating highly variable firmware latencies producing measurement offsets believed to impair DC-to-AC conversion efficiency.

Improved existing, FDA Class II activity monitor firmware; designed new device firmware; documented changes, designs and test procedures to meet FDA and business requirements.• Isolated and corrected (Apple) iAP authentication and Bluetooth SPP communications defects in the BodyMedia FIT LINK device, dramatically easing customer issues and facilitating deployment of associated iPhone app improvements.

Developed custom HP LaserJet firmware augmentations for TROY devices; collaborated directly with HP and its other partners to specify inter-operating features and their supporting protocols; provided technical coordination in multi developer projects; proposed TROY firmware architectures for HP FutureSmart [TM] devices.• Collaborated heavily with HP and other SBPs to design new features contributing directly to industry-historic, large-enterprise sales and three of four consecutive, Outstanding Partner awards, including 2008 Partner of the Year.

Isolated and fixed defects in firmware; planned, executed and documented unit tests; provided internal and limited external technical support; monitored problematic/upgraded customer sites; evaluated hardware change impact; repaired engineering-use hardware.

Developed electromechanical combination lock firmware; specified communication protocols and hardware improvements; worked with marketing and support to design installation tool user interface.• Reduced Z02 manual-bolt-drive lock idle current 75% to approximately 8uA by isolating cause to a Schmitt-triggered microcontroller input and modifying firmware sleep setup, ensuring salability and mitigating warranty risk of battery life complaints.• Re-conceived model 2740 GSA lock setup module user interface and mechanical design, reducing projected cost by an order of magnitude and enabling government-proposed inclusion with each lock shipped - company website shows the UI concept carried to production in my absence.

Isolated design and unit defects in laser print/scan products; directed or performed firmware improvements; architected device security; provided internal firmware/hardware engineering support.• Isolated undocumented hardware component functional changes and implemented firmware workarounds to correct network reset failures observed in formatter board production, eliminating a 3 - 4% excess defect rate

IC Design House (final 42 months): Developed ASIC test firmware and software tools based on IC requirements, design notes and HDL, including a proprietary SIMD/VLIW microcode assembler; modified ASIC logic; evaluated co-simulation tools.• Redesigned media processor conditional execution logic, reducing associated microcode size up to 50%.Communications RF Product Development (initial 36 months): Developed residential cordless telephone firmware; specified sourced products, verified samples and specified improvements; improved caller ID test procedures; conceived caller ID callback improvements.• Redesigned cordless telephone/answerer user interface and re-edited voice prompts to improve usability and perceived quality, inducing a major retailer to retract threats to drop the entire cordless telephony product line.

Designed connectivity protocols and implemented device drivers for a hospital blood glucose meter docking station.

Designed display data transfer rate and audio stability improvements for a surgical power tool control panel.

Developed control firmware for FDA Class III infant incubator/warmer and ROM monitor for prototypes.

Developed foreign and domestic cooking control firmware; performed FMEA; specified hardware changes.• Implemented European conventional/convection/microwave/stove-top control with 100 recipe presets titled/prompted in six languages in under 12 weeks and 32kB OTPROM, ensuring sample appliance availability for Domotechnica 1995.

Designed and partially implemented remote data management software to support DOT breath alcohol meters.• Designed legacy meter feed resolution improvements, to facilitate DOT-compliant evidence card printing.

Designed and implemented portions of model year 1996 Cadillac interior climate control firmware.• Scavenged 300 bytes from communications handlers, ensuring space for factory self-test within 13kiB mask ROM.

Developed embedded diskette file-system firmware; controlling PC software; cross-platform, proprietary Text Processing Language (TPL) compiler; VMS and UNIX TPL conversion engine implementations; TPL filters and supporting utilities.