Sr. RF and Wireless Systems Engineer, Amazon Leo Digital RF Systems

Amazon • San Diego, CA

2d • $159,200 - $215,300 • Onsite

About The Position

Amazon Leo is Amazon’s low Earth orbit satellite network. Our mission is to deliver fast, reliable internet connectivity to customers beyond the reach of existing networks. From individual households to schools, hospitals, businesses, and government agencies, Amazon Leo will serve people and organizations operating in locations without reliable connectivity. As a Sr. RF and Wireless Systems Engineer in the Digital RF Systems team, you will be responsible for RF architecture definition, RF line-up design, and RF specifications of custom ASICs used in Leo phased array systems. You will work closely with RFIC and DSP designers during the design phase, participating in RFIC design reviews to ensure optimal system-level RF performance. You will use MATLAB, ADS and other simulation tools to model RF impairments of the chips and analyze complex phased array system system and sub-system interactions. In post-silicon, you will drive prototyping, defining RF DVT lab test requirements to validate designs. You will support production teams through statistical analysis and yield optimization in cross-functional collaboration with manufacturing engineers. You will develop novel techniques to estimate and correct RF impairments implemented in hardware and firmware. Based on system-level constraints such as low power and cost, you will develop optimized solutions to support high throughput for our customers. You will engage with an experienced cross-disciplinary staff to conceive and design innovative product solutions, working closely with internal teams including ASIC/RFIC designers, firmware/software engineers, and design verification engineers. You will drive key aspects of wireless product design identifying ASIC level specifications from the product requirements.

Requirements

• Master's degree or Ph.D. degree in Electrical Engineering or related field
• 7+ years of relevant experience in wireless DSP/RF systems engineering (LTE, 5G-NR, WiFi 802.11, BLE)
• In depth knowledge of DSP design for low power consumption ASIC
• Experience with MATLAB, Python and/or C/C++ for fixed point DSP algorithm development, modeling and simulation
• Solid understanding of OFDM, AGC, beamforming algorithms, MIMO, channel estimation, equalization techniques
• Solid understanding of RF blocks and components
• Experience in RF impairment estimation and compensation techniques
• Working knowledge of FW implementation of various DSP algorithms
• Experience in using lab equipment, bring-up and validation of chip
• MSEE/PhD is highly preferred with emphasis on digital signal processing and wireless communication systems

Nice To Haves

• Strong background in Communication Theory (signal estimation and detection, AGC, channel estimation), OFDM, MIMO, Digital/Wireless Communication Systems and engineering
• Extensive experience in designing low power/area digital signal processing blocks for Wireless RF SOCs
• Excellent understanding of RF architectures and blocks used in the Wireless SOCs
• MATLAB, Python, C++ experience with emphasis on fixed point modeling of DSP blocks, RF impairment modeling, RF calibration algorithm development, system performance simulations (EVM, ACRL, OOB emissions)
• Experience with bit-accurate modeling to match RTL implementations, emulations, FW development
• Familiarity with phased array systems and phased array performance optimization techniques
• Experience in silicon bring-up in the lab and using lab equipment such as vector spectrum analyzer, signal generators, high speed scopes and logic analyzers

Responsibilities

• Own end-to-end RF architecture and line-up design for the Leo RFICs and phased array communication systems used in the satellites and customer terminals
• Define RF specifications, key performance requirements for custom ASIC development
• Simulate and characterize RF impairments impact on the system
• Review RFIC designs for compliance with system performance targets
• Research and implement calibration and correction algorithms for RF front-end impairments
• Involve in lab validation plans for post-silicon RF characterization
• Identify and resolve RF performance bottlenecks through measurements and analysis
• Balance power, cost, and throughput trade-offs to meet product requirements
• Support ASIC production data reviews to drive yield improvements with manufacturing engineering
• Serve as the RF systems point of contact across silicon design, firmware, software, and test teams

Benefits

• health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and option for Supplemental life plans, EAP, Mental Health Support, Medical Advice Line, Flexible Spending Accounts, Adoption and Surrogacy Reimbursement coverage)
• 401(k) matching
• paid time off
• parental leave
• sign-on payments
• restricted stock units (RSUs)

What This Job Offers

• Job Type: Full-time
• Career Level: Senior