Senior Optical Signal Integrity / Power Integrity (SI/PI) Engineer (Networking)

TL;DR

Senior Optical Signal Integrity / Power Integrity (SI/PI) Engineer (Networking): Leading the design, simulation, and validation of high-speed electrical interconnects and power delivery networks for next-generation optical modules with an accent on 224G and 448G signaling. Focus on ensuring system-level performance across advanced photonic systems through robust SI/PI design and correlation with lab measurements.

Location: Onsite in Santa Clara, CA, USA

Salary: $150,000 – $230,000 base pay

Company

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

What you will do

• Lead SI/PI efforts for high-speed optical transceiver modules and high-density optical interconnect platforms.
• Design and simulate high-speed channels up to 448G per lane (PAM4) across PCBs, packages, and connectors.
• Perform pre- and post-layout simulations using tools like Ansys HFSS, Keysight ADS, Cadence Sigrity, and SiSoft QSI.
• Develop and validate PCB stackups, via structures, and connector transitions meeting IEEE, CEI, and MSA standards.
• Optimize PDNs to meet target impedance and minimize noise coupling for high-speed DSPs and ICs.
• Collaborate with validation teams to correlate measurements (TDR, VNA, eye diagram, BER) with simulation models.

Requirements

• B.S. or higher in Electrical Engineering, Applied Physics, or a related discipline.
• 7+ years of experience in SI/PI engineering for high-speed interconnects in optical or networking hardware.
• Proven experience with 112G, 224G, and 448G PAM4 signaling.
• Expertise in SI simulation tools such as Ansys HFSS, Keysight ADS, or Sigrity.
• Experience with power delivery design, including decoupling strategies and PDN impedance analysis.
• Must be based in or authorized to work in the USA

Nice to have

• M.S. or Ph.D. in Electrical Engineering with an emphasis on high-speed or mixed-signal systems.
• Experience with co-packaged optics, chiplet-based architectures, or advanced substrate technologies.
• Familiarity with EMI/EMC considerations and signal/power isolation.
• Understanding of thermal and mechanical effects on SI/PI performance.

Culture & Benefits

• Inclusive environment that values diversity of thought and perspectives.
• Recognized as a top company for Diversity, Compensation, and Work-Life Balance.
• Comprehensive benefits for US employees including medical, dental, vision, and wellbeing.
• Eligibility for discretionary bonuses and equity.