PCB Layout Engineer - AI Compute Hardware
MatX•Mountain View, CA
•$160,000 - $600,000•Onsite
About The Position
MatX is building next-generation AI compute infrastructure for large-scale LLM training and inference. We are looking for an experienced PCB Layout Engineer to design and deliver high-speed, high-power, high-density printed circuit boards for our AI chip, compute tray, and rack-scale platform. This is a hands-on role where layout quality directly impacts signal integrity, power integrity, and system performance.
Requirements
- 7+ years of PCB layout experience, including complex multi-layer boards (20+ layers) for server, AI compute, networking, or similar high-performance hardware
- Strong proficiency in Cadence Allegro (or equivalent EDA tool), with deep expertise in high-speed design: differential pair routing, impedance control, length matching, reference planes, and via optimization
- Experience with fine-pitch BGA placement/routing for AI ASICs, GPUs, or high-density packages, and hands-on work with high-speed interfaces (PCIe Gen5/6, CXL, DDR5, 112G/224G SerDes)
- Strong understanding of PDN design (VRM placement, decoupling strategy, power planes, current return paths) and stack-up design (layer count, impedance control, material selection, e.g. Megtron 6/8/9, TU-953Q)
- Familiarity with back-drilling, via-in-pad, and other advanced fabrication techniques, plus DFM/DFT requirements (test point coverage, copper balance, solder mask, assembly constraints)
- Ability to interpret SI/PI simulation results and incorporate feedback into layout
- Experience releasing fabrication packages (Gerbers, drill files, stackup specs) and working directly with PCB fabricators and JDM/ODM partners on high-speed, high-layer-count boards
Nice To Haves
- Experience with 5nm or 3nm and below AI ASIC board layout, ultra-fine pitch BGA, high-density routing
- Experience with 224G PAM4 high-speed interface routing and material selection
- Knowledge of fiber weave effect mitigation — routing at 45°, spread glass laminates
- Familiarity with OCP Open Rack board form factors and mechanical constraints
- Experience with power integrity simulation tools (Ansys SIwave, Cadence Sigrity)
- Background in EMI/EMC design, stitching vias, ground guard traces, and shielding techniques
Responsibilities
- Own PCB layout from floorplanning through final Gerber release for complex, high-layer-count boards (AI accelerator boards, compute trays, backplanes)
- Design high-speed differential pair and controlled impedance routing for PCIe Gen5/6, CXL, and Ethernet 112G/224G interfaces, including length matching and timing constraints per SI/PI guidelines
- Plan stack-ups (layer assignment, impedance control, via structure, laminate selection) and place/route complex BGA packages, including AI ASICs
- Design power delivery networks (PDN) — VRM placement, decoupling capacitors, and power planes to meet PI requirements, partnering with SI/PI engineers on simulation and pre/post-layout analysis
- Ensure DFM/DFT/DFA compliance (test points, via-in-pad, back-drill, assembly constraints) and coordinate with mechanical engineers on board outline, keep-outs, and chassis constraints
- Lead design, layout, and DFM reviews with JDM/ODM partners, and manage release packages (Gerbers, fabrication notes, stackup docs, footprint libraries)
- Support bring-up, debug, and signal probing to resolve layout-related issues
Benefits
- 4 weeks PTO (accrued) + 12 company Holidays + up to 3 weeks remote work
- Company-subsidized Medical (Kaiser or Anthem) for employees & dependents
- Guardian Dental and Vision insurances for employee & dependents
- Life insurance (employee only)
- HSA and FSA offerings via Lively
- Roth IRA/ 401K (or both) retirement plans with up to 5% company contribution to 401K
- 100% company-paid life insurance (up to $300K)
- 100% company-paid long-term disability insurances
- $1500 Professional Development Budget (per year)
- Onsite team lunch & dinner Monday - Friday
- Company Uber account for commute, or reimbursement for train rides
- $50/mo to use on the perk you value most
- $35/mo for cellular reimbursement
- $40/mo for wifi reimbursement
- 100% paid mental health benefit via SpringHealth and Guardian EAP
- Up to 12 weeks paid parental leave regardless of path to parenthood
- 10 weeks pregnancy disability leave
- Flexible return-to-work hours
- Benepass reproductive health & parental benefit
- Up to $20K/month for AI Resources plus a dedicated internal AI Tooling Team
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
No Education Listed
