Software Development Engineer

JOB TITLE: Software Development Engineer (Job Code: VM1031)

JOB DETAILS:

Design and implement real-time SW system architectures based on symmetric and asymmetric multiprocessing technologies for Sonos' HiFi audio systems. Provide software support for new CPU SoC architecture/platform evaluation and selection. Bring up and debug bootloader and embedded Linux operating system. Bring up and debug new PCBs with ARM based SoC, WiSoC, BTSoC and various Microcontrollers. Develop and maintain Linux kernel drivers for a diverse set of hardware interfaces and peripherals, ensuring comprehensive coverage of various subsystems. Participate in operating system and boot-loader porting and maintenance as an individual contributor on multiple projects with cross-functional teams. Develop and maintain the HDMI driver infrastructure including support for Video, ARC, eARC and CEC and userspace interface for them to enhance and support for audio product pipeline. Design and implement audio peripheral device drivers to integrate smoothly with the HDMI subsystem. Integrate vendor SDKs and operating system components into our build system Develop Hardware Abstraction Layer (HAL) libraries to facilitate communication between hardware components and user space. Collaborate on specific aspects of user space development, including Yocto Project integration. Identify gaps in our current system SW platform relative to HW capabilities and requirements. Identify improvements that enhance our ability to explore, prototype and evaluate new HW platforms. Work with cross-functional teams in new product introductions Contribute to the new board bring-up process by adding Board Support Package (BSP) and validation as well as system SW and HW debugging. Develop, execute, and document system software unit and integration test plans. Interface with vendors to align and coordinate support for entire system architecture (CPU and radio SoCs, PIC, MCU, NPU, GPU, and other peripherals). Provide software support to HW engineering teams in debugging hardware and assist in OS modernization efforts.

EDUCATION AND EXPERIENCE REQUIREMENTS:

Master's degree (or foreign equivalent) in Computer Engineering, Electrical Engineering, Computer Science, or related field plus 2 years of experience in the offered position or related position.

SPECIAL REQUIREMENTS:

Must possess expertise/knowledge sufficient to adequately perform the duties of the job being offered. Expertise/knowledge may be gained through employment experience or education. Such expertise/knowledge cannot be "quantified" by "time". Required expertise/knowledge includes:

• Experience in firmware development for embedded systems, including bring-up of new microcontroller and microprocessor platforms.
• Proficiency in C and C++, including object-oriented design, memory management, multithreading, and system-level programming, with experience using Python for automation, testing.
• Experience with HDMI subsystems including EDID, CEC communication, ARC/eARC audio transport, and compliance with HDMI specifications (1.4, 2.0, 2.1, 2.2) and related digital audio standards (IEC 61937, IEC 60958).
• Experience developing embedded software across Linux kernel and user space, including writing and maintaining kernel modules, character and platform device drivers, and integrating software into upstream or vendor Linux distributions.
• Perform kernel bring-up and board support package integration, including device tree development, clock and power domain configuration, interrupt routing, and interface bring-up for new hardware platforms.
• Experience integrating and maintaining open-source bootloaders (U-Boot), including porting to new boards, configuring SPL/TPL stages, enabling SoC subsystems, and validating DDR SDRAM, NAND Flash, PCIe, Ethernet, I2C, I2S, and other hardware interfaces.
• Experience with ARM processor architectures, including privileged-mode operations.
• Experience with building and using open-source toolchain components, including gcc, GNU binutils, gdb, cross-compilation environments, linkers, and low-level debugging tools.
• Experience in using various debugging techniques, including JTAG debuggers, logic analyzers and oscilloscopes, trace tools and software instrumentation to diagnose timing issues, bus errors and memory faults.
• Experience in designing and implementing performance critical software in resource-limited environments which include device drivers for high-speed peripherals, DMA-based data transfers, interrupt-driven workflows, and low-latency data pipelines.
• Proficiency in software libraries/frameworks which include Open Embedded, Yocto Project.
• Experience in Agile software development processes.
• Understanding of Linux kernel internals, including locking and synchronization primitives, concurrency models, process and interrupt contexts, memory subsystems, and SMP behavior governing user- kernel interaction mechanisms.
• Experience with various protocols/interfaces, including TCP/IP, IEEE 802.11/Wi-Fi, Bluetooth, BLE, SPI, I2C, UART, USB and other protocols.

OTHER: Salary: $131,082 per year.

JOB LOCATION:

Sonos, Inc.

2 Avenue De Lafayette

Boston, MA 02111

If offered employment, must have legal right to work in U.S.

**Must reference JOB CODE#: VM1031 when applying.

#LI-DNI

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.

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.

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

• Sonos offers a generous paid leave program for new parents or to care for a family member with a serious health condition, as well as short- and long-term disability for your own medical condition.

• 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!

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.

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.

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.