Edwin Diaz Email & Phone Number

South San Francisco, California, Us

Richmond, Ca, Us

Owned execution and reporting for electromagnetic capability test program derived from UL 9450, UL 991 and CISPR 12 for 1st generation 75kW/600kWh battery energy storage system (BESS); partnered with systems engineer team to convert key learnings into design requirements for 2nd gen product.Designed and executed thermal performance tests on prototype battery modules, which highlighted need for an active cooling capacity early in the 2nd gen BESS design stage.Managed fixture design, test strategy and setup for module level thermal propagation testing, which de-risked test method used for successfully achieving system level UL 9540A thermal runaway compliance.Developed DVP&R for battery pack, pack thermal system and battery distribution unit; encompassing battery safety, ingress protection, thermal stress, shock/vibration per UL 1973, UL 9540/A, SAE J1455 and SAE J2380 standards.

Santa Clara, California, Us

Designed system characterization test plans for both ultra low power (uW) IoT products, which evaluated PMU power consumption, TEG & PV harvesting performance, 915 MHz RF sensitivity/range and accuracy/noise for various sensors (phototransistor, RTD ,mag-loop, MEMS accelerometer) .Leveraged python to integrated various lab equipment (oscilloscope, DAQ, shaker table, function generator, relay) into automated hardware test assemblies and reports for validating product specifications.Utilized characterization and field data to run failure analysis on product issues and partnered with ME/EE/FW/Silicon design teams to validate fixes related to sensor integrity and power harvesting.

Newark, California, Us

Led design validation test program for 80 kWh Li-ion battery product (Mobi)—built environmental test plan (thermal, shock/vib, ingress) and managed execution over 5 months at external lab.Managed F.R.A.C.A.S. process in JIRA to mitigate 30+ electro-mechanical failure modes with quality, engineering, manufacturing and product leadsDeveloped component and system level test procedures to verify functional and performance requirements for Mobi LV battery protection system

Newark, California, Us

Managed Mobi redesign for entry into Japan market—compiled feature & regulatory requirements from partners, coordinated implementation with engineering teams, led verification testing and presented key performance results to perspective customers in Tokyo. Supported test and launch of EV fast charger proof-of-concept in the UK—led performance & IEC 61851 compliance testing, provided onsite tech support, tracked KPIs and presented bi-weekly updates to C-suite & investors throughout 3-month pilot.Owned internal data-analytics platform—built queries & dashboards that removed data access bottlenecks across manufacturing, engineering, sales, marketing and service teamsConducted battery capacity, power and thermal response studies on Mobi product that provided data-backed product specifications & helped sales team better estimate feasibility of customer use-cases

Dublin, Ireland, Ie

Deployed energy monitoring systems to 60+ customers nationally—using various device communication protocols (Modbus TCP/IP, BACnet), SCADA platforms (Wonderware, Iconix Gen64) and SQL databases.Integrated data from PLCs, ATSs, UPSs, switchgear, generators, PDUs and power meters into custom dashboards and alarm management systems.Developed SQL script that detected and remedied erroneous kWh values within customer energy billing database, saving $100k+ in infrastructure costs.Provided in-person customer training and documentation on how to effectively use data tools to evaluate the health of their energy distribution systems.

Dublin, Ireland, Ie

Validated power distribution switchgear by testing breaker and transformer performance via primary current injection, impedance, hi-pot and TTR testing.

Newark, Delaware, Us

Conducted 3-factor DOE on Microwave coaxial cable assemblies— designed 12 dielectric patterns to investigate structural effects on electrical performance (loss tangent, insertion loss, VSWR). One design reduced dielectric build time by 50%—opted for use in future product.

Newark, Delaware, Us

Retrofitted an obsolete R&D test machine with automated testing and data-logging capability—replaced outdated Siemens controls system and programmed new Allen Bradley PLC and PanelView HMI, as well as routed data to plant’s remote monitoring system using an OPC server.

Bachelor Of Science, Electrical Engineering

Education record