Senior Signal Integrity / Power Integrity Engineer (Hardware)

TL;DR

Senior Signal Integrity / Power Integrity Engineer (Hardware): Designing and simulating high-speed interconnects for next-generation networking platforms with an accent on 112G/224G PAM4 SerDes and advanced power delivery. Focus on 3D EM simulation, lab validation, and optimizing high-density PCB architectures for hyperscale and AI networking systems.

Location: Must be based in Roseville, CA or Santa Clara, CA, USA

Salary: $162,000–$225,000 (Base pay)

Company

hirify.global is an industry leader in data-driven, client-to-cloud networking for large data centers, campus, and routing environments.

What you will do

• Perform 3D EM design and simulation of high-speed interconnects using Ansys HFSS, SiWave, and Cadence Sigrity.
• Develop and validate test vehicles to characterize next-generation PCB materials and packages.
• Conduct S-parameter and time-domain measurements using VNA, TDR, and BERT equipment.
• Perform link-level analysis for Ethernet 800G/1.6T, PCIe Gen6/Gen7, and CXL standards.
• Collaborate with hardware and mechanical teams to optimize stack-up, breakout, and routing strategies.
• Support board bring-up and debug to root-cause SI/PI issues.

Requirements

• BS/MS/PhD in Electrical Engineering, Physics, or related field.
• Strong understanding of signal integrity theory, S-parameter analysis, and channel modeling.
• Hands-on experience with 2.5D/3D EM solvers like Ansys HFSS, SiWave, or CST.
• Proficiency with lab equipment including oscilloscopes, VNAs, TDRs, and BERTs.
• Experience analyzing 56G/112G/224G PAM4 and NRZ serial links.
• Must be authorized to work in the USA.

Nice to have

• Experience with co-packaged optics or chiplet-based architectures.
• Knowledge of EMI/EMC considerations in photonic-electronic systems.
• Understanding of thermal and mechanical effects on SI/PI performance.
• Experience working with fabrication vendors and contract manufacturers.

Culture & Benefits

• Competitive compensation including base salary, bonus, and equity.
• Comprehensive benefits package including medical, dental, and vision insurance.
• Focus on diversity, inclusion, and work-life balance.
• Opportunity to work in a new R&D lab environment with industry-leading networking technology.