Sr. Modem Systems 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.

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Key job responsibilities
The Role:

Be part of the team defining the system level architecture of Leos broadband wireless system from customer end points to terrestrial gateways via Low Earth Orbit satellites.


This is a unique opportunity to help define a next-generation wireless PHY solution with minimal legacy constraints. The team focuses on physical layer system design including waveform optimization modulation and coding strategies MIMO synchronization channel estimation equalization and link adaptation under realistic channel conditions. Responsibilities also include PHY performance modeling and simulation link budget analysis spectral efficiency optimization interference mitigation and development of top-level wireless system architecture aligned with hardware and real-time implementation constraints.

In this role you will:

- Develop and improve physical layer modem algorithms for wireless communication systems
- Work on system architecture signal processing and performance optimization for components such as modulation/demodulation channel coding channel estimation equalization MIMO and synchronization
- Support pre-silicon verification and post-silicon validation/debugging
- Collaborate with RF ASIC DV and SW teams to enable efficient hardware and real-time implementation

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.

- Bachelors degree in electrical engineering or equivalent
- 7 years of experience in wireless systems design and / or RF design implementation
- Experience in wireless system design and architecture system integration RF system analysis
- Experience with current and upcoming RF standards in cellular (4G/5G) WiMAX 802.11ad microwave backhaul DVB-S2 / DVB-C OR similar broadband wireless standards

- Masters / PhD degree in Electrical Engineering or Communications Systems
- Good analytical problem solving and communication skills
- Experience with development of a new wireless communications system
- Experience with technical-focused regulatory filings and spectrum coordination
- Experience with communication theory OFDM MIMO Digital/Wireless Communication Systems and RF engineering

Amazon is an equal opportunity employer and does not discriminate on the basis of protected veteran status disability or other legally protected status.

Los Angeles County applicants: Job duties for this position include: work safely and cooperatively with other employees supervisors and staff; adhere to standards of excellence despite stressful conditions; communicate effectively and respectfully with employees supervisors and staff to ensure exceptional customer service; and follow all federal state and local laws and Company policies. Criminal history may have a direct adverse and negative relationship with some of the material job duties of this position. These include the duties and responsibilities listed above as well as the abilities to adhere to company policies exercise sound judgment effectively manage stress and work safely and respectfully with others exhibit trustworthiness and professionalism and safeguard business operations and the Companys reputation. Pursuant to the Los Angeles County Fair Chance Ordinance we will consider for employment qualified applicants with arrest and conviction records.

Our inclusive culture empowers Amazonians to deliver the best results for our customers. If you have a disability and need a workplace accommodation or adjustment during the application and hiring process including support for the interview or onboarding process please visit for more information. If the country/region youre applying in isnt listed please contact your Recruiting Partner.

The base salary range for this position is listed below. Your Amazon package will include sign-on payments and restricted stock units (RSUs). Final compensation will be determined based on factors including experience qualifications and location. Amazon also offers comprehensive benefits including 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 and parental leave. Learn more about our benefits at CA San Diego - 159200.00 - 215300.00 USD annually