Embedded Software Engineer (LDN)

Job description

For over four decades, Cirrus Logic has been propelled by the top engineers in mixed-signal processing. Our rockstar team thrives on solving complex challenges with innovative end-user solutions for the world's top consumer brands. Cirrus Logic is also known for its award-winning culture, built on a foundation of inclusion and fairness, meaningful community engagement, and delivering enjoyable employee experiences at every turn. But we couldn’t do it without our extraordinary workforce – and that’s where you come in. Join our team and help us continue to make Cirrus Logic an exceptional place to grow your career! We’re looking for an Embedded Software Engineer who thrives close to the hardware and enjoys building high-performance, reliable firmware for DSP architecture and microcontrollers (e.g., RISC V and Arm Cortex M/A). You’ll design and implement real-time embedded software, optimize compute-heavy pipelines, and collaborate with hardware and systems teams to bring products from concept to production. This role suits someone who can move comfortably between architecture/design, low-level firmware, and performance tuning—especially where latency, throughput, power, and determinism matter. Key Responsibilities: Design, implement, and maintain embedded firmware for DSP cores and MCUs (RISC V and/or Arm). Build and optimize real-time signal-processing pipelines (fixed-point and/or floating-point), potentially including FFTs, filters, modulation/demodulation, codecs, feature extraction, or control loops. Develop firmware using a mix of C/C++ (and selective assembly where appropriate), with strong focus on performance, memory, and power optimization. Work with SoC/board peripherals: DMA, timers, SPI, I²C, UART, I²S/TDM, PWM, GPIO, and relevant bus fabrics. Bring up new hardware: boot flows, clocks, memory maps, interrupt vectors, peripheral init, and early validation. Implement and debug drivers and RTOS components (e.g., Zephyr or equivalent), including task scheduling, synchronization primitives, and ISR design. Develop test strategies: unit tests, hardware-in-the-loop tests, test automation, and manufacturing/production diagnostics. Use debugging/profiling tools: JTAG/SWD, logic analyzers, oscilloscopes, trace (ETM/ITM), and cycle-accurate profiling when available. Collaborate cross-functionally with hardware, FPGA/ASIC, systems, and application teams to d…