• Architected and pilot tested a device-side auto-diagnosis solution for detecting a MOSFET shoot-through condition and an automated self-protection response for the associated battery module.• Triaged and prioritized field-derived software and firmware improvement requests and negotiated the solution’s design and release timing with the product development team. • Gathered customer requirements for monitoring the health of the installed fleet and conceived of the data architecture for collecting and summarizing billions of datapoints on a daily basis.• Program managed enhancement and expansion of server-side code used to auto-diagnosis equipment failures.• Product managed the creation of a new, more scalable auto-diagnosis engine able to monitor millions of devices.

• Managed the commissioning of the first Megapacks (shipping container sized battery system) and identification of design improvements required for the product launch.• Maintained 99+% availability on a 105MW front-of-the-meter storage asset, the world’s largest battery at the time, allowing it to stabilize grid disturbances, provide frequency support, and auto-bid into the energy markets.• Managed the creation and execution of the urgent response procedures for discharging and removing critically damaged Lithium Ion battery modules. Deployed firmware changes to enable early detection of high-risk failure modes and to enable remote shutdown of vulnerable modules.• Led the development of an automated, server-side alarm system that monitored worldwide equipment for time sensitive conditions. Alarms were prioritized based on the required response time and sent to on-call engineers. Urgent conditions were reported within 15 minutes.• Architected an automated approval and deployment process for updating software on customers’ battery systems allowing 120,000 devices across 550 installations to be updated in 30% of the time using less people.• Established a process for investigating and tracking the root of causes of field failures. Reduced the failure rate in one critical battery sub-system by 5X resulting in improved system availability for customers.• Launched a customer facing ticketing system and computerized technical support hotline to process customer requests. Processed 110 requests per week within 2 years of inception.• Grew the Product Engineering team from 3 people to 12 direct and 11 indirect team members, globally.

Directed development of a printed circuit board assembly (PCBA) with a 25 year design life and robust enough to withstand high temperatures and deep thermal cycles when integrated into a photovoltaic (PV) module junction box. Shrank the size of the assembly by 60%, revised the design to withstand 6kV surges, and lowered the cost by 60% to hit the target cost. Designed a custom, serviceable junction box enclosure (using rapid prototyping techniques) that could passively dissipate 6W through a plastic box with a thermal budget of 70C. Specified PCBA manufacturing test equipment and coordinated manufacturing of first 25,000 units. Architected the next generation design for a string-stretching device that is compatible with 1500V PV systems and reduces the cost by an additional 50%.

• Created the Electrical Systems Engineering Team and grew it to 4 positions in 2.5 years.• Architected and oversaw the development of a ground fault protection retrofit solution for existing PV systems that increased detection sensitivity by 50X. Released solution in phases to expedite deployment with 4 significant enhancements in 2 years. Designed, prototyped, tested and launched production of an external solution in 3 weeks. Upgraded 327 inverters at 147 sites in 2 years. Detected 24 ground faults, saving $12.75M in repairs and production losses.• Analyzed and published the risk of 13 electrical faults and the effectiveness of 20 mitigation methods in ground mounted PV systems using a Failure Mode and Effects Analysis (FMEA). • Conducted and supervised field investigations and failure analysis of equipment failures using the 8D methodology.• Collected concerns from VIP customers affected by high impact field failures. Lead root cause investigation of failures and development of corrective action plans. Presented root cause findings and recommended corrective actions to customers. Provided customers with confidence to resume operation of their PV systems and to purchase additional SunPower systems.• Established a system for field technicians to request assistance from Engineering on a prioritized basis. Defined requirements for the customer interface and verified final design met the requirements. Provided response time of 2 hours for urgent requests and transacted 106 requests in 1.25 years.

• Determined the block design that provided the lowest Levelized Cost of Energy (LCOE) for ground mounted PV systems using SunPower’s single axis tracker. Evaluated hundreds of permutations in the system design and optimized the string size, combiner box size and placement, inverter size and placement, medium voltage transformer design, DC-to-AC ratio, and tracker size and row spacing to produce the lowest LCOE. Solution was the basis for SunPower’s utility-scale power plant designs for 3.5 years.• Provided Electrical Engineering expertise to the project design team.• Investigate the root cause of field failures and developed corrective actions for existing and new systems.• Drafted new requirements for Article 690 of the National Electrical Code (NEC) that reduced costs for PV systems and negotiated the approval of these requirements in 2014.

• Investigated and defined system specifications for new Ultrasound imaging features.• Developed and pilot tested a technique for reducing artifacts when imaging phosphorous containing molecules in humans using MRI equipment.• Designed and tested a PCBA and FPGA (Field Programmable Gate Array) for factory testing the data transmission across a CT Scanner slip ring.