Sr. DSP Modem Embedded Engineer, Amazon Leo

Job description

from Amazon careers

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 Sr. DSP Modem Embedded Software Design Engineer, you will own critical components of the physical layer software that drives our custom satellite modem ASIC. You'll work across the full development lifecycle — from architecture and requirements through implementation, silicon bring-up, integration, and on-orbit operations.

You will operate at the boundary between hardware and software, writing performance-critical code that directly interfaces with custom DSP accelerators and manages real-time link-layer behavior for a broadband LEO constellation.

Key Responsibilities:

- Develop embedded software in assembly, C, and C++ in a real-time operating system environment for broadband satellite modem systems.
- Write real-time critical software to augment and interact with hardware blocks such as FFT, correlator, codec, DPD, etc.
- Write device drivers and system applications for satellite broadband link management.
- Work closely with modem and hardware teams to lead emulation, board bring-up, integration, and testing

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.

About the team
Amazon Leo is building a constellation of Low Earth Orbit (LEO) satellites to deliver low-latency, high-speed broadband connectivity to unserved and underserved communities worldwide. Our PHY Software team owns the Layer 1 stack that powers every link in the satellite network — from customer terminals to gateways, across multiple chip generations and orbital configurations.

This is a rare opportunity to work at the intersection of DSP algorithm design, real-time embedded systems, and space-grade hardware — shipping software that runs in orbit.

Basic Qualifications

- Master's degree in Computer Science, Computer Engineering, or Electrical Engineering, or experience with ARM and various DSP ISAs
- 7+ Years of DSP Modem experience or equivalent experience.
- 7+ years of non-internship professional software development experience including code development methodologies, debugging, version control, and code maintenance.
- 7+ years of experience with DSP modem development and test.
- 7+ years of experience with wireless communications systems such as 3/4/5G, WIFI, or other OFDM systems.
- 7+ years of experience with functional DSP modem blocks such as FEC, FFTs, filters, synchronization, digital pre-distortion, multiple access, equalization, AGC, ACM, etc.

Preferred Qualifications

- 7+ years experience with RF HW and impairments
- 7+ years with lab debugging tools and methods (emulation, signal tracing, spectrum analyzers, channel simulators, and logic analyzers)
- Familiarity with ASIC design, verification, and bring-up
- Familiarity with modem system simulation in Matlab or C/C++
- PhD in DSP, signal processing, communications systems or similar

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 Company’s 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 https://amazon.jobs/content/en/how-we-hire/accommodations for more information. If the country/region you’re applying in isn’t 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 https://amazon.jobs/en/benefits.

USA, CA, San Diego - 159,200.00 - 215,300.00 USD annually
USA, WA, Redmond - 159,200.00 - 215,300.00 USD annually