Senior Principal Engineer, Hardware Application Engineering Board & System Design

Position Title: Senior Principal Engineer, Hardware Application Engineering — Board & System Design (Confidential Client)

Location: Santa Clara, CA | Onsite

Employment Type: Permanent

Compensation

• Salary: $200,000 - $266,400/yr

Company Overview (Confidential)

Our Client's U.S. Customer Solutions Group is the frontline technical partner to the world's most demanding infrastructure customers — megascale data centers, cloud providers, and AI system builders. We turn silicon into deployable platforms by working shoulder-to-shoulder with customer engineering teams from early architecture through production ramp. Our engineers bring deep, hands-on expertise across hardware, software, and system integration. The close, trust-based collaboration we build with our customers — and with our Client's silicon and engineering hardware teams — is foundational to our Client's growth in networking, connectivity, and AI infrastructure.

Position Summary

As Senior Principal Engineer for Board & System Hardware Design, you will be the senior technical authority guiding customer hardware design-in on our Client's Ethernet Switch and UALink platforms, and a key technical bridge between our Client's silicon teams, internal hardware engineering, and the field. Your primary mission is to ensure that customers' next-generation switches, AI fabric platforms, and networking systems are designed right the first time — performant, manufacturable, reliable, and ready for high-volume production. This is a deep individual contributor role with a strong system-design and productization focus. You will spend most of your time reviewing and shaping customer hardware designs — covering board architecture, PCB stack-up and material selection, power architecture, thermal design, mechanical integration, and reliability and retain full hands-on capability across the entire design lifecycle from architecture through schematic, layout guidance, and bring-up. You will also play a central role in defining and supporting reference designs for new silicon and serving as a trusted technical educator to both customers and internal teams. You will be a key technical voice in our Client's evolution toward 224G and 448G SerDes-class systems and the emerging open AI fabric standards.

Primary Functions

• Serve as the senior technical advisor to customer hardware teams designing platforms around our Client's Ethernet switches and UALink silicon, from early architecture through production ramp.


• Lead design-in reviews of customer schematics, PCB stack-ups, and overall system architectures, identifying risks early and guiding customers to best-in-class implementations.


• Define, develop, and support reference designs for new our Client silicon — partnering with silicon, packaging, and internal HW engineering teams from early product definition through customer release.


• Work closely with our Client's internal hardware engineering and silicon teams as a feedback channel from the field — influencing silicon I/O, package, power, and reference design choices based on real customer deployment learnings.


• Drive PCB stack-up strategy and material selection (low-loss laminates, copper roughness, glass weave, via construction) to meet high-speed performance and cost targets.


• Own architecture, schematic, layout guidance, and bring-up of our Client reference and evaluation platforms, applying full lifecycle hands-on expertise where needed.


• Guide customers on power delivery architecture, including PDN design, multi-rail sequencing, decoupling strategy, and tolerance analysis for high-current ASICs.


• Advise on thermal design, mechanical integration, and cooling strategies (air, liquid, immersion) to meet performance and reliability targets in real deployments.


• Provide guidance on signal and power integrity, reviewing customer SI/PI simulations and contributing simulations directly when the project requires it.


• Drive design for reliability, manufacturability, and testability — ensuring smooth transitions to production at ODM/CM partners.


• Develop and deliver technical training to customers and internal our Client teams covering our Client silicon, reference designs, high-speed design best practices, and productization methodologies.


• Provide technical leadership on 112G and 224G PAM4 SerDes designs today, and help shape our Client's hardware approach for next-generation 448G systems.


• Lead hardware bring-up support, root-cause debug, and issue resolution during customer lab phases and early production.


• Partner closely with our Client Silicon Design, Packaging, SI/PI, Software, and Operations teams to deliver fully integrated solutions.


• Contribute to product definition and roadmap planning by bringing real-world customer feedback into architecture and marketing discussions.


• Represent our Client's hardware expertise in customer briefings, executive reviews, and industry technical forums.

Must-Haves

• PhD, Master's, or Bachelor's degree in Electrical Engineering, Computer Engineering, or a related field.


• 15+ years of experience in hardware design, development, and validation of high-speed networking or compute systems.


• 7+ years of dedicated experience in board and system design for high-speed platforms involving modern SerDes (25G NRZ through 112G/224G PAM4).


• Proven full-lifecycle ownership of complex high-speed boards: architecture, schematic, layout guidance, and bring-up.


• Demonstrated experience defining and delivering reference designs that enabled customer or internal platform adoption.


• Strong expertise in PCB stack-up design and material selection for high-speed, high-layer-count boards.


• Deep experience with power architecture for high-current ASICs, including PDN design, sequencing, decoupling, and tolerance analysis.


• Solid background in thermal design and mechanical integration for high-power network and AI systems.


• Working knowledge of SI/PI principles, with the ability to review customer simulations and run targeted simulations independently when needed.


• Hands-on experience with hardware bring-up, lab debug, and root-cause analysis using industry-standard lab equipment.


• Deep understanding of high-speed interfaces: Ethernet, PCIe, DDR, advanced SerDes, and modern power delivery architectures.


• Strong grasp of design for reliability, manufacturability, and testability across the product lifecycle.


• Customer-facing experience supporting complex technical engagements and resolving real-world deployment issues.


• Proven ability to develop and deliver technical training content to engineering audiences.


• Excellent communication skills, with the ability to influence senior customer engineering teams and collaborate across disciplines and geographies.

Preferred Qualifications

• Direct experience with Ethernet switch platforms (any tier) and/or emerging open AI fabric standards and architectures.


• Experience designing or reviewing platforms targeting megascale data center deployments.


• Background in reference platform design and customer enablement for silicon-based solutions.


• Familiarity with ODM/CM manufacturing flows, including DFM/DFT, qualification, and reliability testing.


• Experience with advanced cooling approaches (liquid, immersion) for high-power AI/networking platforms.


• EDA tool fluency in either Cadence (Allegro/Sigrity) or Mentor/Siemens (Xpedition/HyperLynx) ecosystems — tool-agnostic candidates with deep expertise welcome.


• Track record of influencing silicon and platform roadmaps based on customer and field insights.