Sr. Wireless Communication and DSP Engineer, Wireless Systems

DescriptionProject 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 Systems Engineer, this role is primarily responsible for the design, development and integration of Ka band and S/C band communication payload and customer terminal systems.The Role:Be part of the team defining the overall communication system and architecture of Project Kuiper’s broadband wireless network. This is a unique opportunity to innovate and define new wireless technology with few legacy constraints. The team develops and designs the communication system of Kuiper and analyzes its overall system level performance such as for overall throughput, latency, system availability, packet loss etc.This role in particular will be responsible for leading the effort in designing and developing advanced technology and solutions for communication system. This role will also be responsible developing advanced L1/L2 proof of concept HW/SW systems and reference implementation to improve the performance and reliability of the Kuiper LEO network. In particular this role will be responsible for using concepts from digital signal processing, information theory, wireless communications to develop novel solutions for achieving ultra-high performance LEO network. This role will also be part of a team and develop simulation tools with particular emphasis on modeling the physical layer aspects such as advanced receiver modeling and abstraction, interference cancellation techniques, FEC abstraction models etc. This role will also play a critical role in the integration and verification of various HW and SW sub-systems as a part of system integration and link bring-up and verification.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 responsibilitiesDesign advanced L1/L2 algorithms and solutions for the Kuiper communication system.Design wireless communication L1/L2 procedures such as initial network entry, handover, beam management, power control, radio link monitoring, energy saving, Iot. Write ConOps (Concept of operations) document and/or product specifications.Work with ASIC development teams to build power/area efficient L1/L2 HW accelerators to be integrated into Kuiper SoCs.Produce (timing/frequency/beam) resilience requirements on various radio channels based on system level simulation of LEO satellite geometry (with full/partial or no GNSS information).Build reference code/implementation on verification platforms as proof of concept. Embedded software development experience is a big plus.Develop link-level and system-level simulators and work closely with implementation teams to evaluate expected performance and provide quick feedback on potential improvements.Enhance/optimize exist procedures for new application scenarios with minimal additional implementation and complexityWork closely with implementation teams to evaluate/simulate overall system level performance with realistic software and hardware constraints. Provide data on the trade-offs of various design choices.Work with integration teams to develop test solutions to verify integrated system (baseband + RF) with real-time waveform. Experience with software defined radios is highly preferred.Work with network team on test and verification of protocol stacks. Experience on 3GPP L1/L2 protocols development is preferred.Basic QualificationsMaster’s degree in Electrical Engineering, related discipline, or equivalent experience5+ years professional experience working in wireless communications at the system or implementation level.Deep understanding of Multiple access systems such as OFDMA, TDMA, CDMA, etc.In depth experience of modem L1/L2 algorithms development and architectures.Experience in the development of link and system level simulators using Matlab/Python/C.Broad spectrum of knowledge to be able to understand end-to-end network system architecture from wireless physical layer all the way up to application end-point.Experience in test setup automation using Matlab/Python/Pearl.Experience with current software development processes and tools including Agile, TDD, BDD, CI, Git.Must have the ability to work in a small team and drive to go beyond expectations to deliver results.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 HW/SW targeting SoCs, FPGAs, and general-purpose processors.Experience with leading technical initiatives and key deliverables.Preferred QualificationsPhD with emphasis in broadband wireless or wireline communication systemsIn depth understanding and use of communication theory and digital signal processing, particularly related to topics such as time-frequency synchronization and channel acquisition in previous experience.Deep understanding on 3GPP L1 physical layer and high layer protocols such as RLC, RRC, MAC.Must have the ability to work in a small team and drive to go beyond expectations to deliver resultsBroad spectrum of knowledge to be able to understand end-to-end network system architecture from wireless physical layer all the way up to application end-pointImplementation experience with wireless synchronization and parameter sensing techniques such as ranging/positioning based on signaling as well as low-power design expertiseExperience in test automation setup and scripting languages such as Python/Perl/MATLAB with Lab test equipment such as channel emulator, spectrum analyzers and Signal and network traffic generators.Amazon is committed to a diverse and inclusive workplace. Amazon is an equal opportunity employer and does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, 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.Our compensation reflects the cost of labor across several US geographic markets. The base pay for this position ranges from $143,300/year in our lowest geographic market up to $247,600/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 https://www.aboutamazon.com/workplace/employee-benefits . This position will remain posted until filled. Applicants should apply via our internal or external career site.