Senior Optical Signal Integrity Power Integrity (SIPI) Engineer
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Job Location:
Santa Clara County, CA - USA
Monthly Salary:
Not Disclosed
Posted on:
30+ days ago
Vacancies:
1 Vacancy
Job Summary
Arista Networks is seeking a Senior Optical Signal Integrity / Power Integrity (SI/PI) Engineer to lead the design simulation and validation of high-speed electrical interconnects and power delivery networks (PDNs) for next-generation optical modules and engines including 1.6T and emerging high density platforms using 224G and 448G signaling. This position is critical in ensuring system-level performance across advanced photonic systems through robust SI/PI design and validation. Youll work closely with hardware architects ASIC vendors layout packaging and optical teams to co-optimize performance manufacturability and reliability for state-of-the-art networking hardware.
- Lead signal integrity (SI) and power integrity (PI) efforts for high-speed optical transceiver modules high density optical interconnect platforms.
- Design and simulate high-speed channels up to 448G per lane (e.g. 224G/448G PAM4) across PCBs packages and connectors.
- Perform pre- and post-layout SI/PI simulations using tools like Ansys HFSS Keysight ADS Cadence Sigrity and SiSoft QSI.
- Develop and validate PCB stackups via structures high-speed breakout regions and connector transitions to meet compliance with IEEE CEI and MSA standards.
- Work closely with electrical optical and layout teams to define routing constraints reference plane designs and return path continuity for minimal signal degradation.
- Design and optimize PDNs to meet target impedance minimize noise coupling and support fast transient loads for high-speed DSPs and ICs.
- Provide SI/PI layout guidelines to PCB designers and review placement/routing for high-speed paths and power domains.
- Collaborate with validation teams to perform measurements (TDR VNA eye diagram jitter BER) and correlate with simulation models.
- Engage with ASIC connector and packaging vendors to support co-design and channel optimization across multiple integration layers.
- Drive root cause analysis of SI/PI-related issues during validation and production builds.
Qualifications :
- 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 and related SI/PI challenges.
- Strong understanding of PCB stackup design via modeling impedance control and crosstalk mitigation.
- Expertise in signal integrity simulation tools such as Ansys HFSS Keysight ADS Sigrity or similar.
- Experience with power delivery design including decoupling strategies PDN impedance analysis and noise mitigation techniques.
- Familiarity with transceiver MSA form factors (QSFP-DD OSFP) and standards from IEEE CEI OIF.
- Hands-on experience using TDRs VNAs oscilloscopes and other lab equipment to validate simulation results.
- Excellent problem-solving documentation and cross-functional communication skills.
Preferred Qualifications
- M.S. or Ph.D. in Electrical Engineering or a related field with 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 in densely integrated photonic-electronic systems.
- Understanding of thermal and mechanical effects on SI/PI performance and long-term reliability.
- Experience working with fabrication vendors ASIC teams and contract manufacturers to ensure end-to-end channel integrity.
Compensation Information:
The new hire base pay for this role has a pay range of $150000 to $230000. Arista offers different pay ranges based on work location so that we can offer consistent and competitive pay appropriate to the market. The actual base pay offered will be based on a wide range of factors including skills qualifications relevant experience and work location. The pay range provided reflects base pay only and in addition certain roles may also be eligible for discretionary Arista bonuses and equity. Employees in Sales roles are eligible to participate in Aristas Sales Incentive Plan which pays commissions calculated as a percentage of eligible -based employees are also entitled to benefits including medical dental vision wellbeing tax savings and income protection. The recruiting team can share more details during the hiring process specific to the role and location.
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Additional Information :
Arista Networks is an equal opportunity employer. Arista makes all hiring and employment-related decisions in a non-discriminatory manner without regard to race color religion sex sexual orientation gender identity national origin or any other factor determined to be unlawful under applicable federal state or law law. All your information will be kept confidential according to EEO guidelines.
Remote Work :
No
Employment Type :
Full-time
Key Skills
- IDS
- System Design
- Haskell
- PCB
- Root cause Analysis
- Technical Writing
- System Security
- Federal Aviation Regulations
- Warehouse Distribution Experience
- Encryption
- Product Development
- Contracts
About Company
Arista Networks is an industry leader in data-driven, client-to-cloud networking for large data center, campus and routing environments. What sets us apart is our relentless pursuit of innovation. We leverage the latest advancements in cloud computing, artificial intelligence, and sof ... View more
