Job Overview
The Devices and Services org at Amazon has been the innovation engine of consumer electronics at Amazon with the industry-leading Kindle e-readers, Fire tablets, Fire TV, Echo, and Echo’s popular smart speaker and Alexa, the leading AI assistant. We are looking for a Senior Applied Scientist- Audio to join the Edge Technology team. You will work on all Echo audio features, including spatial audio and home theater, having a large impact on customers as music listening is the most popular feature.
In This Role, You Will
- Be the champion of Echo music processing technology innovation from ideation, proof of concept to productization.
- Propose new research projects, get buy‑in from stakeholders, and lead the team for successful execution.
- Work closely with an interdisciplinary product development team, including outside partners, to bring prototype algorithms into commercialization.
- Be a team leader in an open and collaborative environment.
Basic Qualifications
- 5+ years of industry or academic research experience.
- Experience in embedded development in C/C++ or full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations.
- Experience in written and oral communication, including the ability to communicate with all levels in the organization (technical, business, executive).
- Proven track record in commercializing innovative audio (music processing, especially in spatial audio) algorithms.
- Passion for high‑fidelity music rendering and skilled in critical listening.
- Expert knowledge in music signal processing theory and applications – filter design optimization, limiter/compressor, dynamic range compression, up‑mixing, binaural rendering, etc.
- Proficient with real‑time audio programming in C/C++ and Python/Matlab.
Preferred Qualifications
- Have peer‑reviewed scientific contributions in premier journals and conferences.
- Experience with ML applications in music processing – generative model (diffusion or auto‑encoder) for source separation, up‑mixing and 3D audio applications.
- Basic understanding of physical acoustics, room acoustics, and transducer theory.
- Good understanding of a full smart audio system design – microphone array, loudspeaker, ADC, gain stages.
- Familiarity with voice processing – beamforming, echo cancellation, noise reduction, etc.
- Understanding of music production process – stereo and multichannel audio formats, mixing/mastering and reproduction.
- Experience with mentoring junior researchers and graduate interns.
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. 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.
Amazon offers comprehensive benefits including health insurance (medical, dental, vision, prescription, Basic Life & AD&D insurance and optional 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.
Base salary ranges for this position are:
- USA, CA, Sunnyvale – 192,200.00 – 260,000.00 USD annually
- USA, MA, Cambridge – 167,100.00 – 226,100.00 USD annually
- USA, WA, Bellevue – 167,100.00 – 226,100.00 USD annually