Sr. Embedded PHY SW Engineer, Wireless Systems

Project Kuiper 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 Senior Modem Software Design Engineer you will be a part of the team participating in the definition as well as implementation of Project Kuipers broadband wireless communication software architecture. You will participate in all phases of physical layer software development from architecture design through requirements implementation test and operational support. This is a unique opportunity to innovate and define novel wireless technology with few legacy constraints. The team develops the communication system of Kuiper and validates overall performance within key metrics such as throughput latency system availability packet loss etc.

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.

Key job responsibilities
Design the embedded software architecture operating the Physical Layer (L1) Modem across multiple nodes within the Kuiper network
- Develop embedded software in assembly C and C in a real-time operating system environment for broadband satellite communication modem systems.
- Work with L2 MAC software teams to design and implement reliable interfaces and inter-process communications between the L1 and L2 software stacks.
- Work closely with ASIC design Verification and MAC systems and software teams to support board bring-up integration and testing.
- Work with development teams on system integration and debugging from PHY to network layer including interfacing with flight computer and SDN control subsystems.
- Ability to adapt design and test activities based on current HW/SW capabilities delivered by the development teams.
- Support system bring-ups and end-to-end testing using lab equipment such as Vector Signal Generators and Analyzers Packet Generators Channel Emulators. Contribute development-test bring up procedures with Linux Python bash scripting etc.
- Support operations using telemetry to validate link performance over key indicators such as throughput latency etc.

- MS degree in Computer Science or Electrical Engineering or similar.
- 7 years of non-internship professional embedded software development with real time constraint experience.
- Experience should include code development methodologies debugging version control and code maintenance.
- Experience with software defined radios (SDRs) and embedded programming in C/C and VHDL/Verilog is a plus.


- PhD in Computer Science or Electrical Engineering
- Experience in multiple access wireless communications systems such as 5G WiFi or other OFDM systems.
- Knowledge of ethernet protocols such as IP UDP TCP HTTP and analysis tools such as Wireshark
- Experience in test automation setup and scripting languages such as Python/Perl/Matlab.
- Experience with software defined radios and embedded programming in C/C and VHDL/Verilog is a plus.
- Experience with Lab test equipment such as channel emulator spectrum analyzers and Signal and network traffic generators
- Familiarity with modem system simulation in Matlab or C/C
- Ideal candidate has a wireless communication systems or digital signal processing background a passion for building real-world carrier-grade communication systems and industry experience developing PHY/MAC layer software targeting embedded multicore processors in C/C

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.

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Our compensation reflects the cost of labor across several US geographic markets. The base pay for this position ranges from $143300/year in our lowest geographic market up to $247600/year in our highest geographic market. Pay is based on a number of factors including market location and may vary depending on job-related knowledge skills and experience. Amazon is a total compensation company. Dependent on the position offered equity sign-on payments and other forms of compensation may be provided as part of a total compensation package in addition to a full range of medical financial and/or other benefits. For more information please visit This position will remain posted until filled. Applicants should apply via our internal or external career site.