Sr. High-Speed SI/PI Design Engineer

Sr. High-Speed SI/PI Design Engineer Signal Integrity (SI): Model and simulate high-speed interfaces (e.g., 224G-PAM4 SerDes). Perform channel simulations (TX-to-RX) across packages and PCBs. Work with IBIS-AMI, S-parameter models, and tools like Ansys HFSS, Keysight ADS, or Cadence Sigrity. Optimize interconnects to meet eye diagram, BER, and insertion/return loss targets. Validate compliance with standards like IEEE 802.3df/802.3dj and UAL. Power Integrity (PI): Analyze and design PDN (power delivery network) for core and I/O voltages. Ensure low impedance across required frequency range using de-cap optimization and VRM modeling. Use tools like PowerSI, PowerDC Package/Board Design Collaboration: Co-design with package layout engineers (e.g., substrate, flip-chip, organic packages). Define breakout strategies for dense BGA interfaces Guide stackup, via, and routing constraints in both package and board to enable 224G signaling. Experience with Advanced Package design is plus. Cross-Functional Collaboration: Interface with ASIC, system, layout, and test teams. Provide SI/PI guidelines and design constraints to enable electrical compliance. Support bring-up and debug using scopes, VNAs, TDRs, etc. Skills & Tools: Simulation Tools:

SI: ADS, HFSS, ADK, HSPICE

PI: PowerSI, PowerDC Analysis: Time-domain and frequency-domain signal analysis Crosstalk, jitter, eye closure, PDN impedance Fabrication Knowledge: HDI PCB and advanced package materials (e.g., Megtron 7, Ajinomoto) Low-loss stackup optimization, via-in-pad, via stub mitigation Qualifications: BS/MS in Electrical Engineering or related field. 5+ years in Signal Integrity Estimated Min Rate : $200000.00 Estimated Max Rate : $280000.00 Salary Range + Equity What’s In It for You? We welcome you to be a part of the largest and legendary global staffing companies to meet your career aspirations. Yoh’s network of client companies has been employing professionals like you for over 65 years in the U.S., UK and Canada. Join Yoh’s extensive talent community that will provide you with access to Yoh’s vast network of opportunities and gain access to this exclusive opportunity available to you. Benefit eligibility is in accordance with applicable laws and client requirements. Benefits include: Medical, Prescription, Dental & Vision Benefits (for employees working 20+ hours per week) Health Savings Account (HSA) (for employees working 20+ hours per week) Life & Disability Insurance (for employees working 20+ hours per week) MetLife Voluntary Benefits Employee Assistance Program (EAP) 401K Retirement Savings Plan Direct Deposit & weekly epayroll Referral Bonus Programs Certification and training opportunities Note: Any pay ranges displayed are estimations. Actual pay is determined by an applicant's experience, technical expertise, and other qualifications as listed in the job description. All qualified applicants are welcome to apply. Yoh, a Day & Zimmermann company, is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Visit to contact us if you are an individual with a disability and require accommodation in the application process. For California applicants, qualified applicants with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. All of the material job duties described in this posting are job duties for which a criminal history may have a direct, adverse, and negative relationship potentially resulting in the withdrawal of a conditional offer of employment. It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability. By applying and submitting your resume, you authorize Yoh to review and reformat your resume to meet Yoh’s hiring clients’ preferences. To learn more about Yoh’s privacy practices, please see our Candidate Privacy Notice: #J-18808-Ljbffr Yoh Services LLC