Senior Signal Integrity Engineer: High-Speed I/O & AEC

Amphenol Communications Solutions; Nashua (NH); On-site; USD 120,000 - 180,000; Full time

Job summary

Amphenol Communications Solutions (ACS), a division of Amphenol Corporation, is seeking a Senior Signal Integrity Engineer to join our High-Speed I/O R&D team in Nashua, NH. You will design, simulate, validate, and optimize next-generation active electrical cables, optical transceivers, and high-speed networking products.

The role requires deep expertise in high-speed serial channels, DSPs, retimers, SerDes, PCB design, and SI analysis from concept through production, with collaboration across

Qualifications

• BS/MS/PhD in Electrical Engineering or related field.
• 5+ years in high-speed signal integrity engineering.
• Experience with 56G/112G, preferably 224G PAM4.
• Experience with DSPs, retimers, AECs, DACs, ACCs.
• Strong PCB design, stack‑ups, transmission line theory.
• S-parameter analysis and channel modeling experience.

Responsibilities

• Design and analyze SI for high-speed copper and optical interconnect products.
• Perform pre-layout and post-layout SI simulations at 224G PAM4 and beyond.
• Analyze loss, return loss, crosstalk, impedance, and channel compliance.
• Optimize PCB stack-ups, vias, connectors, cables, and package transitions.
• Develop channel budgets and link performance models.
• Collaborate with cross-functional teams for design reviews and qualification.

Skills

Electrical Engineering

High-speed SI

DSPs & Retimers

S-parameter Analysis

PCB Design

Channel Modeling

Education

BS/MS/PhD in Electrical Engineering

Tools

Ansys HFSS

VNAs

Oscilloscopes

TDRs

Job description

Amphenol Communications Solutions (ACS), a division of Amphenol Corporation, is seeking a Senior Signal Integrity Engineer to join our High-Speed I/O R&D team in Nashua, NH. You will design, simulate, validate, and optimize next-generation active electrical cables, optical transceivers, and high-speed networking products.

The role requires deep expertise in high-speed serial channels, DSPs, retimers, SerDes, PCB design, and SI analysis from concept through production, with collaboration across