Senior Principal Engineer - Signal Integrity

About the role

Celestica Engineering is seeking a highly motivated and self-driven candidate qualified for the position of Signal Integrity Engineer to help design and build market-leading Hardware Platform Solutions. The Signal Integrity Engineer will play a critical role as the subject matter expert in the planning of digital PCB designs, simulation, lab verification, and troubleshooting signal integrity issues on completed designs. They will also be expected to help with design review of critical PCBs for signal integrity concerns. Good communications skills and the ability to work with physically dispersed teams is a strong requirement.

Responsibilities

• Define and develop next-generation technologies for networking, server, and storage products.
• Provide innovative solutions to unusually complex and sensitive problems requiring ingenuity and creativity.
• Serve as technical consultant and technical leader for their team.
• Engage with customers and suppliers on product roadmaps and support.
• Communicate progress toward projects and program goals.
• Lead, motivate, and direct a workgroup.
• Demonstrate proficiency in hardware systems environments and attention to detail.
• Apply strong organizational skills and cross-functional capabilities.
• Maintain a customer-focused approach.

Knowledge/Skills/Competencies

• PCB design fundamentals (single-ended and differential signals)
• Signal loss and impedance control
• Crosstalk (near-end and far-end)
• Experience with single-ended and differential signaling up to 50 Gbps
• Experience 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)
• Proficiency with 2D and 3D simulation tools (examples include ADS, ANSYS HFSS, Sigrity)
• Electrical length calculations for signal matching
• Familiarity with interpreting signals in both frequency (S-parameter) and time domain and understanding how to interpret results for suitability for a particular application
• Generating and interpreting data-eye diagrams up to 50 Gbps: NRZ and PAM4
• Proficiency with Allegro or similar layout tool and schematics
• PCB stack-up design and familiarity with fabrication limitations and cost trade-offs
• High-frequency board material experience
• Significant experience measuring signal performance in the lab: TDR measurements and VNA measurements
• Ability to develop test fixtures for making measurements (both custom design test boards as well as making “ad hoc” probing solutions to troubleshoot existing PCBs)
• Expertise in cost vs. performance trade-offs when designing signal paths, with cost as a key design constraint
• Experience with flex circuit design for high-speed signaling

Education

• Typical experience: 12+ years in high-speed signal delivery design and evaluation, including signal integrity within a PCB and off the board (board-to-board connectors, ribbon cables, coaxial cable, etc.)
• Typical education: Bachelor’s degree in Electrical Engineering; Master’s preferred

Pay

$200,000 – $351,000. The salary range is an estimate and may change based on several factors, including changes in duties, credentials, experience, or geographic jurisdiction of the successful candidate.