HASSAN HASSAN

• Led 4MW BESS installation and commissioning for Singapore AI datacenter critical power — served as technical bridge between
customer (datacenter operator) and internal R&D teams, translating mission-critical uptime requirements into product specifications.
Achieved 99.99% availability through three-layer control (cell→module→system) and four-layer monitoring architecture.
• Conducted market insight and competitive landscape analysis for NiZn BESS in APAC datacenter market; aligned product
development charter with key customer pain points (thermal runaway risk, total cost of ownership, footprint constraints), directly
informing 800V-class DC bus architecture decisions.
• Authored technical product development charter for 61 kWh BESS cabinet (1 10Ah, 608Vdc max) — defined system requirements,
competitive positioning strategy, and regional go-to-market specifications based on customer interviews and site surveys across 3
countries.
• Served as primary technical liaison for 5+ datacenter clients; led quarterly business reviews and conducted on-site needs
assessments to identify upsell opportunities — secured 18MW VRLA replacement and 24MW LFP BESS replacement projects through
direct customer engagement and proposal development.
• Directed end-to-end project execution from POC through FAT, site commissioning, and final handover per ISO 9001 and IEC 62933.
Zero-fault functional uptime during 500-hour continuous stress testing — validated product competitiveness in regions most demanding
environment.
• Redesigned PCB layout for improved thermal dissipation and EMI shielding.
• Diagnosed and resolved PCB corrosion failures during 4MW Singapore installation caused by extreme condensing-humidity
environments; coordinated with R&D and field teams to expedite PCB layout redesign with enhanced conformal coating — preserving
customer relationship and $3M+ contract.

• Developed digital control algorithms for 140W/240W AHB controllers on Xilinx FPGA platform, achieving 100% functional coverage
across all operational modes.
• Architected 2000W interleaved PFC and 1000W totem-pole PFC power stages with real-time HIL validation — topologies directly
applicable to BESS inverter front-ends and EV on-board chargers.
• Designed high-current power-stage schematics and PCB layouts with optimized power density, incorporating thermal vias and copper
pours per IPC-2221 Class B.
• Integrated GaN FETs (GaN Systems GS66508T) into PFC and LLC stages, increasing power density and reducing switching losses
versus Si MOSFET.
• Optimized AHB transformers and PFC inductors improving thermal rise by 18°C and peak efficiency by 1.2% at full load.

• Led pre-research development of 140W PFC+AHB GaN power converter with customized high-frequency planar transformer (8-layer,
EID core, amorphous material) — full lifecycle from topology selection to manufacturing SOP, achieving 93.6% peak efficiency.
• Collaborated directly with Tier-1 OEM clients (Google, Apple, Amazon, Philips) to define cost targets and performance requirements;
drove cost-down engineering reducing BOM cost by 26% for 140W PD3.1 and 100W PD3.0 programs while maintaining full
performance — resulting in multi-year supply agreements.
• Led NPI from prototype through DVT/PVT to mass production for 4 concurrent OEM programs; presented bi-weekly technical reviews
to customer engineering teams, achieving >97% first-pass yield and $2M+ annual revenue.
• Resolved critical IV-curve failures during EVT low-temperature chamber testing by issuing ECNs for low-ESR capacitors and
transformer design optimization — kept program on original timeline and preserved customer launch schedules.
• Led EMI/EMC pre-compliance testing across three product launches; executed FACA on CE/RE failures, reducing certification cycle
by 40% and achieving first-pass CISPR-32 Class B compliance — accelerated customer time-to-market.
• Optimized GaN gate drive timing and PCB layout, lowering junction temperature by 15°C and shrinking board area by 30% while
maintaining full safety margins per IEC 62368-1.

• Executed full parametric verification of Buck, Boost, Half/Full-Bridge, and QR Flyback power stages using oscilloscopes, electronic
loads, and thermal chambers — ensuring designs met customer specifications.
• Delivered 33W dual-port USB-C and 70W high-density MacBook adapter from concept to production, owning schematic, PCB layout,
BOM optimization, and manufacturing transfer; presented design review packages to customer engineering teams for approval at each
development gate.
• Collaborated directly with Apple engineers during 33W parallel NPI line build at Salcomp India facility — aligned on line qualification
criteria, supported first-article validation.
• Supported NPI production line from prototype through ramp-up, coordinating with cross-functional teams in China facilitated weekly
technical alignment meetings with customer representatives to track milestones and resolve blocking issues.
• Authored technical documentation including test reports, FA analysis, and process specifications for customer audits; presented bi
weekly status updates to Tier-1 OEM clients, building trusted technical relationships that contributed to 3 program extensions.
• Driven root-cause analysis for 10+ production issues including yield drops and test failures; coordinated 8D reports and worked with
customer quality teams to validate corrective actions, achieving resolution within customer-mandated timelines.

• Installed and commissioned HV/LV distribution systems and control panels per IEC 61439, achieving 100% compliance across 6
industrial sites with zero safety incidents.
• Designed custom control panels and executed preventive electrical maintenance using FMEA-based scheduling, cutting unplanned
downtime by 25% across all managed sites.
• Commissioned and troubleshot industrial electrical systems using multimeters, thermal imagers, and relay test sets, resolving critical
faults within 12 hours to minimize production losses.