RF Systems 3GPP Integration Engineer, Amazon Leo

About the Role

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. The RF Systems 3GPP Integration Engineer will work with a wide variety of functional groups and will be deeply involved in system integration and test of next‑generation Amazon Leo satellites.

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 system.
• 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 hardware/software delivered by 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 communications 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 development‑test bring‑up procedures using Linux, Python, Bash scripting, etc.
• Use wireless synchronization and signal generators / spectrum analyzers to verify time/frequency requirements.
• Apply knowledge of wireless system design, integration, bring‑up and debug of wireless PHY and RF systems on SoC platforms.
• Demonstrate strong understanding of OFDM and MIMO‑based wireless systems across both baseband and RF domains, with a solid foundation in communication theory and signal processing.
• Work in the lab environment, staying in front of setups for debugging with reference equipment.
• Script changes to SW/HW pieces incrementally and assess impact on payload via probing RF, IF, clock, and channel‑quality messages using spectrum analyzer, signal generator, oscilloscope, frequency counter, attenuators, etc.
• Work cross‑functionally with RF, ASIC, SW, Comsys, Testbed teams and vendors to advance testing and integration.
• Participate in verification and integration on the FPGA.

Basic Qualifications

• Bachelor’s degree in Electrical Engineering or a related field, or equivalent experience.
• 5+ years professional experience working in L1/L2 or beamforming.
• Experience with RF lab equipment, bring‑up, test and integration activities.
• Experience with verification and integration on FPGA.
• Experience with Linux/Unix.

Preferred Qualifications

• Masters or 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, or MATLAB.
• Broad knowledge of end‑to‑end network system architecture from wireless RF and physical layer through the application endpoint.
• 3GPP NTN and ORAN knowledge to address conformance testing.
• Experience leading technical initiatives and delivering key results.
• Ability to work in a small team and exceed expectations.
• 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 modern 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.

Export Control Requirement

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.

Compensation & Benefits

Base salary range: $129,200 – $174,800 USD annually (Austin, TX and Redmond, WA). The Amazon package includes sign‑on payments, restricted stock units (RSUs), and comprehensive benefits such as health insurance (medical, dental, vision, prescription), Basic Life & AD&D insurance, supplemental life plans, Employee Assistance Program, mental health support, medical advice line, flexible spending accounts, adoption and surrogacy reimbursement, 401(k) matching, paid time off, and parental leave.