Software Development Engineer, Sonos
$131.1k
Wireless audio experience company
Be an early applicant
Wireless audio experience company
1001+ employees
Be an early applicant
$131.1k
1001+ employees
Company mission
To provide music lovers with the tools to enjoy their favourite sounds anywhere, any time.
Role
Who you are
- 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
- 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
What the job involves
- 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
Application process
- End Date: April 28, 2026
Our take
Sonos is a highly reputed global manufacturer of top tier speakers. Since being founded in 2002 it has become a market leading audio product brand, partnering with over 100 music service companies and putting products in nearly 11 million households worldwide.
Sonos' strong brand reputation has seen it carve out space in a competitive market alongside giants like Amazon and Alphabet, who are similarly targeting the connected audio home market. Sonos have perhaps been smart in keeping their product selection relatively modest, focusing instead on strategic partnerships that embed their products across different markets. They are, for example, partnered with Audi to provide their first in-car sound system.
As companies began adopting remote and hybrid work, Sonos benefitted from a period of increased consumer focus on refitting the leisure and work facilities of their homes. This includes speakers and smart speakers, which account for the vast majority of Sonos revenue. This trend is only set to continue, with the global home audio market expected to exceed $70 billion by 2030. As a market leader, Sonos is in good stead to continue its sustained growth.
Steph
Company Specialist at Welcome to the Jungle
Insights
0% employee growth in 12 months
Company
Funding (last 2 of 6 rounds)
Nov 2013
$25m
LATE VC
Jun 2012
$135m
SERIES F
Total funding: $227m
Company HQ
Lower State, Santa Barbara, CA
Leadership
Tom Conrad
(CEO)Tom has been part of Sonos since 2017, becoming CEO in 2025. Previously, he was the CEO of Zero Longevity Science and the CPO of Quibi.
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