Senior Staff Field Applications Engineer – High Voltage

Renesas Electronics•San Jose, CA

4d•Remote

About The Position

We are looking for a Senior Staff High Voltage Field Applications Engineer (FAE) to help define the future of AI datacenter power architectures. The industry is undergoing a fundamental shift toward 800V “grid‑to‑core” power delivery, with new architectures spanning from rack‑level HVDC distribution down to GPU‑level 48V and emerging 6V rails. This role sits directly at the center of that transformation. You will work closely with leading hyperscale customers to solve some of the hardest challenges in power delivery today: how to move and convert tens of kilowatts efficiently, how to scale power density, and how to architect the next generation of 800V → 48V → 6V → sub‑1V systems that enable AI compute. This is not a traditional FAE role. You will act as a system architect, technical leader, and trusted advisor, engaging early in platform definition and driving decisions that shape customer roadmaps. You will help customers evaluate competing architectures, bring up cutting‑edge designs, and deploy real solutions using advanced technologies including GaN, digital power, and multiphase GPU power delivery. If you are motivated by working on unsolved problems, influencing industry direction, and operating at the intersection of system architecture, silicon, and real‑world deployment, this role offers a rare opportunity to have outsized impact.

Requirements

Bachelor’s degree in Electrical Engineering or related field
10+ years of experience in power electronics or system architecture
Strong experience with high‑voltage systems (400V to 800V)
Deep understanding of datacenter or AI platform power architectures, HVDC distribution and intermediate bus design, and high‑power DC/DC conversion at kW scale
Proven hands‑on lab expertise in bring‑up, debug, and validation
Experience working directly with hyperscale or large enterprise customers
Strong communication skills with ability to influence technical and executive audiences

Nice To Haves

Master’s degree in Electrical Engineering
Experience with AI accelerators, GPUs, or high‑power server platforms
Expertise in LLC / DCX architectures, IBC (48V to 12V / 6V), Multiphase VR and high‑current GPU power delivery
Familiarity with GaN and SiC technologies
Proven track record influencing system architecture decisions
Ability to operate independently in fast‑moving, high‑impact environments

Responsibilities

Lead Grid‑to‑Core Power Architecture Engagement: Serve as the primary technical interface to hyperscale datacenter and AI customers for high‑voltage (400V / 800V) power architectures. Drive early‑stage architectural influence with customer power, system, and platform teams. Translate system requirements into clear architecture proposals and tradeoffs. Support board‑level bring‑up, validation, and debug in customer labs and internal labs. Act as a technical mentor for other FAEs, especially in high‑voltage and system‑level topics. Support multiple customers and programs in parallel while maintaining high technical credibility and ownership.
Drive 800V Power Conversion Strategy: Lead customer engagement for 800V to 48V DCX (LLC‑based DC transformers), 800V to 12V direct downconversion paths, and HV hot‑swap, protection, and energy storage integration. Help customers evaluate multi‑stage vs direct conversion approaches, efficiency vs density vs thermal constraints, and position differentiated solutions in a rapidly emerging, competitive 800V ecosystem.
Own 48V Intermediate Bus and GPU Power Delivery: Drive architecture and implementation of 48V‑based power delivery systems. Lead solutions for 48V to 12V IBC designs (4:1 conversion), 48V to 6V GPU rails (8:1 conversion and multiphase buck), and high‑density, high‑current delivery for next‑generation GPU platforms. Support customer transition toward direct 6V architectures, higher current density, and reduced form factor constraints. Act as a key technical authority for GPU board‑level power scaling challenges.
Enable System‑Level Solutions and Proof‑of‑Concepts: Drive adoption of complete solutions, not just components. Engage with internal teams to develop and deploy high‑voltage DC/DC platforms, 48V multiphase buck and IBC solutions, and end‑to‑end power conversion reference designs. Support customers through early architecture definition, board bring‑up and validation, and performance optimization and characterization.
Influence Product Direction and Technology Roadmaps: Identify gaps in power density and efficiency, integration and system usability, and documentation and tools. Translate customer needs into clear, actionable roadmap inputs across GaN, SiC, MOSFET technologies, and controllers, drivers, and system solutions. Influence next‑generation products aligned with emerging AI infrastructure needs.