Senior Systems Software Development Engineer, Sonos

• Bachelor’s in Computer Engineering, Electrical Engineering, Computer Science or related field
• At least 5 years of professional experience developing firmware/system software for embedded systems
• Strong proficiency in C/C++
• Significant experience with embedded Linux, kernel internals, and device driver development
• Experience bringing up and debugging systems using U-Boot and common boot flows
• Experience with toolchain and debug tooling (e.g., gcc, binutils, gdb)
• Experience designing and developing software/firmware using Free-RTOS as developing bare-metal applications for microcontrollers
• Strong debugging capability using tools such as JTAG, logic analyzers, and oscilloscopes
• Proven ability to build performance-critical software in resource-constrained environments (e.g., high-speed peripheral drivers)
• Proficiency with Yocto Project / OpenEmbedded workflows
• Strong understanding of Linux execution contexts and concurrency, including locking/mutexes, SMP behavior, and kernel/user boundaries
• Familiarity with key interfaces/protocols such as:
• DDR, NAND, PCIe, Ethernet, USB
• SPI, I2C, UART, I2S
• TCP/IP, Wi-Fi (802.11), Bluetooth/BLE

Desirable

• 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
• Design and implement real-time system software architectures leveraging SMP (symmetric multiprocessing) and AMP (asymmetric multiprocessing) approaches for embedded audio systems
• Bring up, debug, and maintain bootloader (U-Boot) and embedded Linux across new hardware platforms
• Lead early board bring-up and debug of new PCBs using ARM SoCs, WiSoCs, BT SoCs, and microcontrollers
• Develop and maintain Linux kernel drivers across a wide range of subsystems, interfaces, and peripherals
• Own and evolve the HDMI software stack, including:
• Video path integration
• ARC/eARC
• CEC
• Userspace interfaces supporting the audio/product pipeline
• Integrate vendor SDKs, BSP components, and OS modules into the build and release process
• Develop and maintain HAL libraries enabling clean, testable interfaces between hardware and user space
• Identify platform gaps relative to hardware capabilities and product requirements; propose and deliver improvements to enable faster prototyping and evaluation of new hardware
• Contribute to BSP validation and system-level debugging across HW/SW boundaries
• Define, execute, and document unit and integration testing for system software components
• Partner with silicon and component vendors to coordinate support and resolve platform issues across CPU/radio SoCs, MCU/PIC, NPU/GPU, and peripheral devices
• Support hardware engineering teams with deep technical debugging and contribute to OS/platform modernization efforts

• 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