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.As a Senior Firmware Engineer within this newly formed product development organization you will be responsible for some of the core software and firmware at the heart of the industry's most innovative ultra-portable products. In the process, you will work with some of the brightest minds in the business across multiple disciplines of software, hardware, radio, acoustics, WiFi, and Bluetooth technologies.Building the world's leading sound experience starts with the experience we provide for our people. That's why we've been distributed from the start: initially between offices in Boston & Santa Barbara, and now with additional offices in Seattle, San Francisco & Paris. This role can be done from anywhere in the United States- any of our offices, or remotely from home. It's about impact, not location.What You'll DoDevelop cutting-edge WiFi, Bluetooth Classic, and LE audio productsDesign new connectivity features and maximize the potential of existing technologiesDebug complex low-level problems that may span interfaces between hardware and softwareDevelop and mentor junior engineersWhat You'll NeedResearch 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.Basic QualificationsBS or MS in EE, CS, Mathematics, or related discipline.5+ years of experience programming in C.Development experience with serial protocols such as SPI, I2C, UART, and USBIn-depth understanding of modern embedded SW development processes including design, implementation, unit testing, continuous integration, version control etc.Demonstrable experience in developing performance critical SW in resource-constrained environmentsFamiliarity with over the air protocol analysisStrong written and verbal communication skills with experience articulating technical concepts in cross-functional teamsPreferred QualificationsExpertise in the Bluetooth protocol including Bluetooth Classic, Low Energy, and LE audioExperience in WiFi, including over the air analysis, and wireless coexistenceAbility to write and modify radio controller firmwareExperience with embedded Linux and real-time operating systemsSolid track record of shipping reliable, extensible and maintainable software.#LI-RemoteAt 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:$152,000 and $168,800Please 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