Sr. Communication Systems Design Engineer, Wireless Systems

Description

Amazon Leo is an initiative to launch a constellation of Low Earth Orbit satellites that will provide low‑latency, high‑speed broadband connectivity to unserved and underserved communities around the world. As a Systems Engineer, this role is primarily responsible for the design, development and integration of Ka band and S/C band communication payload and ground terminal systems.

Be part of the team defining the overall communication system and architecture of Amazon's broadband wireless network. This is a unique opportunity to innovate and define groundbreaking wireless technology with few legacy constraints. The team develops and designs the communication system of Amazon Leo and analyzes its overall system level performance such as for overall throughput, latency, system availability, packet loss etc.

This role will lead the effort in designing and developing advanced technology and solutions for the communication system. It will also be responsible for developing advanced L1/L2 proof‑of‑concept HW/SW systems to improve the performance and reliability of the Amazon Leo network, using digital signal processing, information theory, wireless communications to develop novel solutions for achieving ultra‑high performance LEO network. It will develop simulation tools with emphasis on modeling physical layer aspects, and play a critical role in design, integration and verification of HW and SW sub‑systems.

Due to applicable export control laws and regulations, candidates must be a U.S. citizen or national, U.S. permanent resident or lawfully admitted into the U.S. as a refugee or granted asylum.

• Design advanced L1/L2 algorithms and solutions for the Amazon Leo communication system, particularly Multi‑User MIMO techniques.
• Develop proof‑of‑concepts for critical communication payload components using SDR platforms consisting of FPGAs and general‑purpose processors.
• Work with ASIC development teams to build power/area efficient L1/L2 HW accelerators to be integrated into Amazon Leo SoCs.
• Provide specifications and work with implementation teams on the development of embedded L1/L2 HW/SW architectures.
• Work with multi‑disciplinary teams to develop advanced solutions for time, frequency and spatial acquisition/tracking in LEO systems, particularly under large uncertainties.
• Develop link‑level and system‑level simulators and work closely with implementation teams to evaluate expected performance and provide quick feedback on potential improvements.
• Develop testbeds consisting of digital, IF and RF components while accounting for link budgets and RF/IF line‑ups. Previous experience with VSAs/VSGs, channel emulators, antennas (particularly phased‑arrays) and anechoic chamber instrumentation is a plus.
• Work with development teams on system integration and debugging from PHY to network layer, including interfacing with flight computer and SDN control subsystems.
• Willing to work in fast‑paced environment and take ownership that goes from algorithm specification to HW/SW architecture definition to proof‑of‑concept development to testbed bring‑up to integration into the Amazon Leo system.
• Be a team player and provide support when requested while being able to unblock themselves by reaching out to RF, ASIC, SW, Comsys and Testbed supporting teams to move forward in development, testing and integration activities.
• Ability to adapt design and test activities based on current HW/SW capabilities delivered by the development teams.

• Master's degree in Electrical Engineering, or experience working in electrical engineering field.
• 5+ years professional experience working in wireless communications at the system or implementation level.

• PhD with emphasis in broadband wireless or wireline communication systems.
• Deep understanding of Multiple access systems such as OFDMA, TDMA, CDMA, etc.
• Profound understanding of communication theory and digital signal processing, particularly related to topics such as multi‑antenna signal processing, interference rejection, angle of arrival estimation, etc.
• Great expertise in…