RF Comms Systems Integration and Test Engineer, Amazon Leo

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.

About the role

This is a unique opportunity to define a groundbreaking, high-throughput wireless solution with few legacy constraints to meet 3GPP standards. The team works with customer requirements and wireless implementation teams on bring-up, integration, tuning, and debugging of advanced PHY/MAC and beamforming radio systems for state-of-the-art satellite communication systems.

Responsibilities

• Be at the forefront of bring-up, integration, and debugging of advanced PHY/MAC and beamforming radio systems for state-of-the-art satellite communication systems.
• Architect, document, and execute 3GPP-based testing for satellite-to-ground networks.
• Work with vendors to define equipment requirements to achieve 3GPP conformance testing.
• Adapt test plans daily based on capabilities of HW/SW delivered by the development teams.
• Collaborate across disciplines—including PHY algorithms, RF design, digital beamforming and antenna, MAC, and firmware teams—to ensure seamless integration and best-in-class wireless performance.
• Understand Doppler pre- and post-compensation techniques with CFO/SFO in LEO comms systems and test them in the laboratory environment for 3GPP. (Knowledge of channel emulators is a plus.)
• Trade link budget and verify RF line-up for payloads in RF and IF configurations.
• Characterize performance, analyze data, root-cause system-level issues, and ensure high product quality.
• Take responsibility for power, clock, RF, air, and network debugging in the lab.
• Contribute to development-test bring-up procedures using Linux, Python, bash scripting, etc.
• Work with wireless synchronization and signal generators/spectrum analyzers to verify time/frequency requirements.
• Work in a lab environment, debugging with reference equipment.
• Use scripting to incrementally change SW/HW pieces and understand their effect on payload (via probing RF, IF, clock, channel quality messages) with tools like Specan, signal generators, scopes, frequency counters, and attenuators.
• Work cross-functionally with RF, ASIC, SW, Commsys, Testbed teams, and vendors to advance testing and integration.

Requirements

• Bachelor's degree.
• 5+ years of professional experience working in L1/L2 or beamforming.
• Experience with RF lab equipment, bring-up, test, and integration activities.
• Due to applicable export control laws and regulations, candidates must be a U.S. citizen or national, U.S. permanent resident (i.e., current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.

Qualifications

• Master's/PhD with emphasis in wireless communication systems.
• Proficiency with modeling in MATLAB and/or C/C++.
• Experience in test automation setup and scripting languages such as Python/Perl/Matlab.
• Broad knowledge to understand end-to-end network system architecture from wireless RF and physical layer up to application endpoints.
• 3GPP NTN and ORAN knowledge to address conformance testing.
• Experience leading technical initiatives and key deliverables.
• Background in wireless LTE, 5G/6G, RLC, PDCP, RRC, and RAN protocols.
• Knowledge of IP, UDP, TCP, HTTP protocols and analysis tools such as Wireshark.
• Experience with current software development processes and tools including Agile, TDD, BDD, CI, Git.
• Implementation experience with wireless synchronization and parameter sensing techniques such as ranging/positioning based on signaling, as well as low-power design expertise.
• Wireless communication systems or digital signal processing background, with a passion for building, integrating, and testing real-world carrier-grade communication systems.
• Extensive experience with lab test equipment such as channel emulators, spectrum analyzers, signal generators, and network traffic generators.
• Strong understanding of OFDM and MIMO-based wireless systems across both baseband and RF domains, with a solid foundation in related communication theory and signal processing.

Pay

USA, TX, Austin - $129,200.00 - $174,800.00 USD annually
USA, WA, Redmond - $129,200.00 - $174,800.00 USD annually

Benefits

• Sign-on payments and restricted stock units (RSUs).
• Health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance, and optional supplemental life plans).
• Employee Assistance Program (EAP) and mental health support.
• Medical Advice Line.
• Flexible Spending Accounts.
• Adoption and surrogacy reimbursement coverage.
• 401(k) matching.
• Paid time off and parental leave.

Learn more about our benefits at amazon.jobs/en/benefits.