Principal - Signal Integrity Engineer
On-siteSan Jose, California, United States
EXPIREDSan Jose, California, United StatesOn-siteFull TimeSenior LevelEnterprise
Full TimeSenior LevelEnterprise
Job Summary
Lead planning of digital PCB designs, simulation, and lab verification to troubleshoot signal integrity issues on completed designs. Conduct design reviews for critical PCBs, develop test fixtures for TDR and VNA measurements, and interpret data-eye diagrams up to 50Gbps. Serve as technical leader for the workgroup, engaging with customers and suppliers on product roadmaps while managing cross-functional teams. Define next-generation technologies for networking, server, and storage products, balancing high-speed signal delivery against cost constraints.
Required Qualifications
- PCB design fundamentals (single ended and differential signals)
- Signal loss
- Impedance control
- Crosstalk (near end and far end)
- Experienced with single-ended and differential signaling up to 50Gbps
- Experienced working with component models (touchstone files) and cascading models to generate complete system models for simulation
- Simulation of digital interfaces (FPGA to DRAM, SERDES interfaces)
- Simulation of analog paths through a combination of PCB, connector, and cable (signal driver to DUT)
- Proficient with 2D and 3D simulation tools (examples include ADS, ANSYS HFSS, Sigrity)
- Electrical length calculations for signal matching
- Familiar with looking at signals in both frequency (S-parameter) and time domain and understand how to interpret results when it comes to suitability for a particular application
- Very familiar with generating and interpreting data-eye diagrams up to 50Gbps: NRZ and PAM4
- Proficient with Allegro or similar layout tool and schematics
- PCB Stack up design and familiar with fabrication limitations and cost trade-offs
- High Frequency board material experience
- Significant experience with measuring signal performance in the lab: TDR measurements and VNA measurements
- Able to develop test fixtures for making measurements (both custom design test boards as well as making ad hoc probing solutions to troubleshoot existing PCBs)
- Expert in cost vs performance tradeoffs when designing signal paths as cost is key design constraint
- Experience with flex circuit design for high speed signaling
- 12+ years experience with High Speed Signal Delivery Design and Evaluation. This includes both signal integrity within a PCB and off the board (board to board connectors, ribbon cables, coaxial cable, etc.)
- Bachelor's degree in Electrical Engineering
- Good communications skills
- Ability to work with physically dispersed teams
- Strong ability to lead, motivate and direct a workgroup
- Strong organizational skills
- Cross-Functional capabilities
- Customer focused
Desired Qualifications
- Master's is preferred
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