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Sonos Principal Real-Time Operating System Engineer for Audio Processing in Boston, Massachusetts

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.

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.

As a Principal Software Engineer working in the Professional team, you will build software features to enable the next generation Sonos professional product portfolio. You’re a creative problem solver who will leverage your experience in audio software, API design, or SDK implementation in designing and implementing a real-time operating system (RTOS) tailored for audio processing applications. You will work closely with our multidisciplinary team of software engineers, hardware engineers, and audio experts to create a robust and efficient RTOS that ensures low-latency and high-performance audio processing.

If you love sound, creating breakthrough new products, and solving challenging problems, Sonos wants to hear from you!

What You’ll Do

  • Design and develop a real-time operating system optimized for audio processing applications leveraging open source or third party components. .

  • Collaborate with cross-functional teams to define system requirements and specifications for the RTOS.

  • Implement real-time scheduling algorithms, resource management, and task prioritization to ensure low-latency audio processing.

  • Collaborate with firmware engineers on the development of device drivers and kernel-level components to interface with audio hardware and peripherals.

  • Optimize system performance, memory footprint, and power consumption for embedded audio systems.

  • Conduct rigorous testing and performance analysis of the RTOS to identify and resolve bottlenecks and potential issues.

  • Collaborate with external developers and consultants and leverage externally available technologies.

  • Document system architecture, design decisions, and coding standards.

  • Stay up-to-date with industry trends and emerging technologies in real-time operating systems and audio processing.

What You’ll Need

Research 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 Qualifications

  • Bachelor's or higher degree in Computer Science, Electrical Engineering, or a related field.

  • 8+ years of experience developing real-time operating systems or embedded systems on multicore ARM processors and audio DSPs.

  • Strong proficiency in C and C++ programming languages.

  • Familiarity with audio processing algorithms and digital signal processing (DSP).

  • Experience with real-time scheduling, kernel development, and device driver programming.

  • Understanding of industry standards and protocols for audio bus interfaces (e.g., I2S, SPI, USB).

  • Excellent problem-solving skills and the ability to work in a collaborative team environment.

  • Strong communication and documentation skills.

    Preferred Qualifications

  • Master's or Ph.D. in a related field.

  • Previous experience working on audio-related projects.

  • Knowledge of audio frameworks and libraries (e.g., ALSA, ASIO, JACK).

  • Experience with RUST.

    #LI-Remote

    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:

$185,000 and $205,600

Please 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 Insurance

  • A 401(k) plan with company matching and immediate vesting

  • An Open Time Off policy (OTO) so you have maximum opportunity to disconnect and recharge, with no tenure-based vacation accruals required

  • 80 hours of sick time upon hire, refreshed annually

  • Up to 12 paid holidays per calendar year

  • 12 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 policy

  • Company-paid Disability, Life, and AD&D Insurance

  • Voluntary benefits, including Voluntary Life, AD&D, Accident, and Pet Insurance

  • Mental health benefits to support your holistic well-being

  • A 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 (https://www.dol.gov/ofccp/regs/compliance/posters/pdf/eeopost.pdf) and its supplement (http://www.dol.gov/ofccp/regs/compliance/posters/pdf/OFCCP_EEO_Supplement_Final_JRF_QA_508c.pdf) . 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.

Sonos is a sound experience company. We connect millions of listeners all around the world to the content they want, where and how they want it. Since inventing multiroom wireless audio in 2005, we have continuously innovated the listening experience, designing hardware and software that celebrates sound, empowers our customers, and brings the home to life. Our team is made up of passionate players united by a culture of respect, transparency, collaboration, and ownership who want to inspire the world to listen better.

Having been distributed from the start, we’ve long since been accustomed to having close teammates in entirely different locations and time zones. We ground ourselves in these four principles while working as distributed teams:

Role Location: Some roles require an office while others may be done remotely. Leaders make this decision based on business rationale, role requirements and team needs.

Travel: Some work is better done in person. Teams should meet together in person at critical moments to move work forward.

Meeting Norms: We use our time to drive OKRs and run the business. We normalize asynchronous collaboration and focused work. We give feedback and help each other improve when norms are not followed.

Flexibility: Flexibility done well fuels impact, not hinders it. Teams flex to support one another and employees flex to deliver for the team or business. We flex both ways to drive impact.

Sonos takes your privacy seriously and is committed to protecting your personal data. To learn more, please review the Sonos Recruiting Privacy Notice (https://sonos.box.com/s/teugmwraclv1bgt6i0vqjdhbhvydxg3p) . This Notice explains how we collect, use and protect your personal information in connection with our recruitment process.

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