Senior Staff Field Applications Engineer – High Voltage

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. 1. 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 2. Drive 800V Power Conversion Strategy Lead customer engagement for: 800V to 48V DCX (LLC‑based DC transformers) 800V to 12V direct downconversion paths HV hot‑swap, protection, and energy storage integration Help customers evaluate: Multi‑stage vs direct conversion approaches Efficiency vs density vs thermal constraints Position differentiated solutions in a rapidly emerging, competitive 800V ecosystem 3. 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) 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 4. 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 End‑to‑end power conversion reference designs Support customers through: Early architecture definition Board bring‑up and validation Performance optimization and characterization 5. Influence Product Direction and Technology Roadmaps Identify gaps in: Power density and efficiency Integration and system usability Documentation and tools Translate customer needs into  clear, actionable roadmap inputs  across: GaN, SiC, MOSFET technologies Controllers, drivers, and system solutions Influence next‑generation products aligned with emerging AI infrastructure needs 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 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 Preferred Qualifications 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 Why This Role Work directly with  industry‑leading AI and hyperscale customers Shape the transition to  800V datacenter power architectures Own  end‑to‑end system engagement from grid to GPU Influence both  customer platforms and internal product direction Operate at  Senior Staff level with broad, cross‑functional impact The expected annual pay range for this position is $150,000K-$220,000K. This position is also eligible for commission pay.  Please note that final offer amount will be dependent on geographic location, applicable experience, and skillset of the candidate. Renesas offers a full range of elective benefits including medical, health savings account (with applicable medical plan), dental, vision, health and/or dependent care flexible spending accounts, pre-tax commuter benefits, life insurance, AD&D, and pet insurance. In addition to elective benefit options, benefited employees receive company-paid life insurance and AD&D, LTD, short term medical benefits as well as paid sick time, paid holidays, and accrued paid vacation. New employees will attend a detailed benefit orientation to learn more about our many benefits an