About the RoleWe are looking for a skilled and hands-on Signal Integrity, Power Integrity, and Characterization (SIPI) Engineer to join our hardware team. In this role, you will own electrical characterization of high-speed SerDes interfaces and power delivery networks across our AI accelerator compute systems. You will build and scale test automation infrastructure capable of covering thousands of channels, while collaborating closely with SIPI engineers and board designers to influence and validate designs from early concept through production.
What You'll DoSerDes Characterization & Validation- Characterize high-speed SerDes interfaces (PCIe, Ethernet, custom protocols) including BER testing, eye diagram analysis, and PVT characterization
- Tune and optimize SerDes Tx and Rx equalization settings
- Perform channel characterization including insertion loss, return loss, and crosstalk measurements using VNA and time-domain reflectometry (TDR)
- Develop and execute correlation methodologies to align simulation predictions with measured results; drive feedback loops to improve modeling accuracy
Power Integrity Characterization- Measure and analyze high-current power rail transient noise and dynamic voltage droop on complex accelerator power delivery networks
- Characterize PDN impedance from board through package and silicon, and compare against target impedance specifications
- Identify PDN design weaknesses and collaborate with power delivery and board design teams to define and validate mitigation strategies
Test Automation & EDVT- Architect, develop, and maintain scalable test automation frameworks for Electrical Design Validation Testing (EDVT) across thousands of SerDes channels on multi-chip accelerator compute systems
- Integrate lab instruments (oscilloscopes, BERTs, VNAs, power analyzers) into automated test flows using Python or equivalent scripting environments
- Build robust data pipelines for test result collection, statistical analysis, and visualization to enable rapid triage and design decisions
Design Collaboration- Partner with SIPI engineers on optimization for advanced package designs, including die-to-die interconnects, bump arrays, and interposer structures
- Collaborate with board designers on PCB stackup definition, trace routing rules, via optimization, and decoupling strategies for high-speed accelerator boards
- Provide characterization data and actionable recommendations to influence layout guidelines, design rules, and future silicon/package revisions
What We're Looking ForExperience & Education- 5-10 years of industry experience in hardware characterization, SI/PI engineering
- Bachelor's degree or higher in Electrical Engineering; advanced degree a plus
- Deep understanding of high-speed SerDes architecture and operation - PHY layer fundamentals, equalization, jitter decomposition, and link margin analysis
- Strong grasp of transmission line theory - wave propagation, impedance matching, reflections, skin effect, and dielectric loss
- Solid understanding of PDN design principles - target impedance, resonance, bypass capacitor placement, and voltage regulator loop dynamics
- Hands-on proficiency with lab equipment
- Experience writing test automation scripts in Python (preferred)
Bonus Points- Background in AI accelerator or GPU system validation
- Familiarity with JEDEC or PCIe compliance testing methodologies
- Experience with statistical process control (SPC) or large-scale data analysis for silicon characterization
- Ability to do layout review for PCB, and advanced package design is a plus
CompensationThe US base salary for this full-time position is determined based on a variety of factors including role, experience, location, job related skills, and relevant education and training. Career length is only a guideline for compensation.
- Early Career - $160,000 - $275,000 + equity
- Mid Career - $175,000 - $400,000 + equity
- Senior Career - $250,000 - $600,000 + equity
What We Offer- Time off: 4 weeks PTO (accrued) + 12 company Holidays + up to 3 weeks remote work
- Health: Company-subsidized Medical (Kaiser or Anthem) for employees & dependents, Guardian Dental and Vision insurances for employee & dependents, and life insurance (employee only), plus HSA and FSA offerings via Lively.
- Financial Wellbeing: Choose from Roth IRA/ 401K (or both) retirement plans with up to 5% company contribution to 401K (even if you don't contribute). Also, 100% company-paid life insurance (up to $300K) and long-term disability insurances.
- Professional Development: $1500 Professional Development Budget (per year)
- Team Meals: MatX provides onsite team lunch & dinner Monday - Friday, with your choice of ordering via WeBox, Specialty's or via our reimbursement system
- Commute on Us: Commute on our company Uber account, or reimburse your train rides. Either way, we pay 100% for your daily commute.
- MatX E[x]tras: $50/mo to use on the perk you value most
- Cell & Internet Reimbursement: $35/mo for cellular and $40/mo for wifi
- Mental Wellbeing: 100% paid mental health benefit via SpringHealth and Guardian EAP.
- Support to Parents: Up to 12 weeks paid parental leave regardless of path to parenthood, 10 weeks pregnancy disability leave, flexible return-to-work hours, and Benepass reproductive health & parental benefit.
- AI Resources: Up to $20K/month plus a dedicated internal AI Tooling Team to support your productivity
