Signal & Power Integrity Engineer, Nitro Team, Annapurna Labs

Annapurna Labs, part of Amazon, designs custom silicon that powers the cloud. Our Nitro team delivers hardware and firmware for AWS's Nitro system, enabling breakthrough performance for EC2 instances that serve millions of customers worldwide.
We work at the intersection of hardware design, signal integrity, and production at massive scale—and we need engineers ready to grow their expertise in SI/PI while contributing to real-world systems.

As a Signal & Power Integrity Engineer on the Nitro team, you'll work on next-generation cloud infrastructure hardware while developing your skills in Signal Integrity and Power Integrity. This is an opportunity to learn SI/PI analysis and simulation while applying your hardware design knowledge to solve complex challenges in high-speed digital systems. You'll be mentored by experienced engineers and contribute to products that directly impact AWS customers.

AWS re:Invent 2024 - Keynote with Peter Desantis - [url]https://www.youtube.com/watch?v=vx36tyJ47ps

Key job responsibilities
- Design and debug high-speed digital circuits for K2 cards and server platforms
- Learn and apply SI/PI simulation methodologies for PCB and system-level designs
- Collaborate with Package design, SerDes and DRAM IP provider, firmware, EC2, and manufacturing teams
- Perform signal integrity analysis for high-speed interfaces and SerDes channels at the advanced of the technology
- Analyze and optimize power delivery networks from card to system level
- Support hardware bring-up, debug, and validation with hands-on lab work
- Participate in design reviews and provide technical feedback with internal and external design teams
- Work with cross-functional teams to resolve signal quality and power integrity issues
- Contribute to design guidelines and best practices based on measurements and analysis

Basic Qualifications

- Bachelor's degree in Electrical Engineering, Computer Engineering, or related field
- 5+ years of experience in hardware design or development
- Strong understanding of digital circuit design fundamentals and PCB design
- Experience with high-speed interfaces (PCIe, DDR, SerDes, Ethernet, or similar) and hands-on lab equipment

Preferred Qualifications

- Familiarity with SI/PI simulation tools (HFSS, PowerSI, ADS, or similar)
- Understanding of transmission line theory, impedance concepts, and S-parameters
- Experience with scripting (Python, MATLAB, or similar) for data analysis
- Knowledge of PCB stackup design, material properties, and power delivery networks
- Experience with hardware validation and production testing
- Experience working on complex multi-layer PCB designs

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