The Senior SI/PI Engineer at Annapurna Labs will be instrumental in defining, designing, and validating next-generation machine learning ASICs for AWS. This role involves working closely with cross-functional teams to address signal integrity and power integrity challenges in complex designs. The team values mentorship and knowledge-sharing, fostering an inclusive environment that supports career growth. Candidates will engage in high-speed channel simulations and collaborate on PCB layouts to optimize performance within AWS datacenters.

• Deep understanding of signal integrity concepts and strong analytical skills in signal and power integrity.
• Hands-on experience with simulation tools such as ADS, MATLAB, Cadence, HFSS, and others.
• Proficiency in high-speed channel simulations, including system-level modeling and validation.
• Experience with PCIe protocols and equalization methods such as DFE, CTLE, and FFE.
• Knowledge of clock distribution and jitter analysis for high-speed designs.
• Expertise in PCB layout and board manufacturing processes, including identifying and mitigating potential issues.
• Hands-on experience in stack-up design, including dielectric material selection, impedance control, and layer optimization.
• Experience in power integrity analysis and power delivery network optimization.
• Familiarity with high-speed design compliance testing and validation methodologies.
• Knowledge of EMC/EMI mitigation techniques.

• Perform end-to-end high-speed channel simulations to ensure signal integrity across complex designs.
• Conduct signal integrity and power integrity analysis to optimize PCB layouts, minimizing losses and signal degradation.
• Utilize simulation tools to evaluate performance and troubleshoot issues.
• Work with PCIe protocols and equalization techniques to optimize high-speed interfaces.
• Analyze clock distribution and jitter to ensure signal timing and integrity across designs.
• Collaborate with PCB layout and hardware design teams to define optimal stack-ups and trade-offs for manufacturing feasibility and performance.
• Identify and mitigate PCB manufacturing issues to ensure high production yield and reliability.
• Work closely with cross-functional teams to align on requirements and trade-offs.

• Employees at Amazon are often offered comprehensive health benefits—including multiple medical plan options (no pre-existing condition exclusions, 100% covered in-network preventive care), dental and vision plans, a 24/7 medical advice line from day one, expert second-opinion services, and broad mental-health support with several free counseling sessions (including pediatric). Financial wellness typically includes a 401(k) with company match (up to 2%), Restricted Stock Units (equity), FSAs, an emergency savings program, product and partner discounts, and even college-savings and home-purchase programs. Overall, the package is designed to support employees and their families’ health, finances, and day-to-day life.