Power Electronics Engineer - Wearables

At Sonos we want to create the ultimate listening experience for our customers and know that it starts by listening to each other. As part of the Sonos team, you’ll collaborate with people of all styles, skill sets, and backgrounds to realize our vision while fostering a community where everyone feels included and empowered to do the best work of their lives.This role is located on-site at one of our officesSome roles require an office while others may be done remotely. This position is office-based, meaning regular in-person collaboration or use of office equipment is essential to maximize effectiveness for this team and/or position. Qualified applicants must live within commuting distance of our Santa Barbara, CA, Boston, MA or Louisville, KY office locations.#LI-OnsiteSonos seeks a Power Electronics Engineer to join the newly formed Portables Category, Mobile Power Systems Team. In this hands-on role, you will be responsible for some of the core analog and mixed-signal electronics at the heart of the industry’s most innovative portable products like the recently launched Sonos Ace. In the process, you will work with some of the brightest minds in the business across multiple disciplines of hardware, software, radio, acoustics, WiFi, and Bluetooth technologies. This is an opportunity to join a high-performing team tasked with shaping the future of Sonos Portables from definition to launch. What You’ll DoLead the development of new and innovative power electronic concepts to charge and power Sonos’ Portable/Wearable productsIdentify and implement highly efficient wired and wireless charging solutions to deliver unmatched consumer experiences Develop new features and maximize the potential of new and existing technologiesDebug complex low-level problems that may span interfaces between hardware and softwareCo-develop algorithms, state-transition diagrams/flowcharts, and analysis for each regime of operationPower Electronics Schematic and PCB layout design and reviewDefine HW verification tests, develop new test methodologies, and derive test limitsWork with development partners/peers to perform failure analysis and corrective actionsQualified applicants must be able to work from an office location for the majority of the work weekWhat You'll NeedBasic QualificationsBS or MS in EE, Physics, or related discipline with 3+ years of relevant experienceExperience in power electronics product development - design concept, prototyping, product validation testing, launch, and product life cycle supporExperience with Analog and Digital Signal Processing, Power Conversion, and Power Management ICsExperience with hardware design and integration, power semiconductor devices, magnetics, and thermal managementSolid experience with electrical simulation and analysis tools such as SPICE and MATLAB/SimulinkStrong written and verbal communication skills with experience articulating technical concepts in cross-functional teamsAbility to work with people with different cultures and backgrounds in different locations and time zonesPreferred Qualifications: In-depth understanding of modern battery charging circuits, USB, and Qi/Qi2 standardsExperience with Battery Fuel Gauges such as HW integration, programming and communicationPower Management Unit (PMU) programming for battery charge algorithms, battery health monitoring and management, and various power modes for low-power battery-operated products with hands-on experience profiling, optimizing, and debugging PMUsExperience with non-standard wireless charging solutionsExperience with embedded real-time operating systems Solid track record of shipping reliable, cost and power-efficient HW in the Wearable spaceHands-on testing and debugging of embedded systems in a laboratory environmentExposure to acoustics and acoustic measurementsExperience with audio ADC/DAC/CODEC and/or Class D amplifier circuitsUnderstanding of tolerance and statistical fundamentals such as component tolerances, ripple, ADC error, etc.Embedded software design experience to understand the constraints and challenges of software implementationResearch shows that candidates from underrepresented backgrounds often don't apply for roles if they don't meet all the criteria. If you don’t have 100% of the skills listed, we strongly encourage you to apply if interested.Visa Sponsorship: Sonos is unable to sponsor or take over sponsorship of an employment visa for this role at this time. We ask that applicants be authorized to work for any US employer, both now and in the future.At Sonos we consider a wide range of factors when determining compensation, which may lead  individual compensation to vary depending on job related qualifications, skills, and experience.  All full time employees are eligible for merit increases, discretionary bonuses, and equity.  Our job postings may span more than one career level and the base pay range may be modified in the future based on changing market conditions. The starting base pay for this role for all US candidates is between: $113,000 and $125,400Please note that compensation details listed in US job postings reflect the base salary only, and do not include bonus, equity, or benefits.We also offer a comprehensive benefits program with choice and flexibility in mind to help support the health, wealth, and overall well-being of our employees. Regular full time employees in the US are eligible for benefits on day one, including:Medical, Dental, and Vision InsuranceA 401(k) plan with company matching and immediate vestingAn Open Time Off policy (OTO) so you have maximum opportunity to disconnect and recharge, with no tenure-based vacation accruals required80 hours of sick time upon hire, refreshed annuallyUp to 12 paid holidays per calendar year12 weeks of paid Bonding Leave following the birth or adoption of a new child, plus up to an additional 12 weeks of Medical Leave for birthing parents under our Short Term Disability policyCompany-paid Disability, Life, and AD&D InsuranceVoluntary benefits, including Voluntary Life, AD&D, Accident, and Pet Insurance Mental health benefits to support your holistic well-beingA generous employee discount program & Sonos Radio HD - on us!For a holistic overview of our benefits, please visit sonosbenefits.com. Note: No amount of pay is considered to be wages or compensation until such amount is earned, vested, and determinable. The amount and availability of any bonus, benefits, or any other form of compensation and benefits that are allocable to a particular employee remains in the Company's sole discretion unless and until paid and may be modified at the Company’s sole discretion, consistent with the law.Your profile will be reviewed and you'll hear from us once we have an update. At Sonos we take the time to hire right and appreciate your patience.Notice to U.S. Job Applicants: Sonos is an equal opportunity employer. We evaluate qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, and other legally protected characteristics.Follow the links to review the EEO is the Law poster and its supplement. Sonos is committed to working with and providing reasonable accommodations to individuals with disabilities. If you need a reasonable accommodation because of a disability for any part of the employment process, please send an e-mail to accommodations@sonos.com and let us know the nature of your request and your contact information.