C

Cirrus Logic

Low power audio and mixed-signal ICs

Embedded Software Engineer

Full-Time
No salary listed
Mid
London, UK+1 moreMore locations: Newbury, UK
HybridTwo days in-office per week; must live within commuting distance or relocate before starting.
Software EngineeringEmbedded Engineering

About the job

Requirements
  • Strong professional experience developing embedded firmware in C/C++ for microcontrollers and/or digital signal processors.
  • Hands-on experience with RISC-V and/or Arm Cortex-M/A architecture, including interrupts, memory, caches, and performance characteristics.
  • Understanding of register-level programming and memory-mapped input/output.
  • Understanding of concurrency, including interrupt service routines, real-time operating system tasks, race conditions, and timing determinism.
  • Understanding of fixed-point arithmetic, numerical precision, and overflow/underflow management.
  • Ability to optimize firmware through cycle counting, memory layout, direct memory access usage, cache behavior, and minimizing latency and jitter.
  • Experience with GCC/LLVM-based toolchains and cross-compilation.
  • Experience with CMake/Make, Meson, linker scripts, and map files.
  • Hardware and firmware debugging skills, including JTAG/SWD debugging and root-cause analysis of timing and performance issues.
  • Expertise with Git and disciplined engineering practices, including code reviews and continuous integration.
Responsibilities
  • Design, implement, and maintain embedded firmware for DSP cores and microcontrollers using RISC-V and/or Arm.
  • Build and optimize real-time signal-processing pipelines using fixed-point and/or floating-point processing, potentially including FFTs, filters, modulation/demodulation, codecs, feature extraction, or control loops.
  • Develop firmware using C/C++ and selective assembly where appropriate, focusing on performance, memory, and power optimization.
  • Work with system-on-chip and board peripherals, including DMA, timers, SPI, I²C, UART, I²S/TDM, PWM, GPIO, and relevant bus fabrics.
  • Bring up new hardware, including boot flows, clocks, memory maps, interrupt vectors, peripheral initialization, and early validation.
  • Implement and debug drivers and RTOS components, including task scheduling, synchronization primitives, and ISR design.
  • Develop test strategies including unit tests, hardware-in-the-loop tests, test automation, and manufacturing/production diagnostics.
  • Use debugging and profiling tools including JTAG/SWD, logic analyzers, oscilloscopes, ETM/ITM trace, and cycle-accurate profiling when available.
  • Collaborate with hardware, FPGA/ASIC, systems, and application teams to define requirements and interfaces.
  • Create architecture notes, interface specifications, timing budgets, work packages, and bring-up guides.
  • Participate in code reviews and help establish best practices for embedded quality, safety, and maintainability.
Desired Qualifications
  • Experience with Python for test tooling or scripts and optional assembly.
  • Experience with RISC-V, Arm Cortex-M/A, or DSP-core architectures.
  • Experience with Zephyr or another RTOS, or optional embedded Linux.
  • Experience with JTAG/SWD debuggers, GDB, OpenOCD/J-Link, logic analyzers, oscilloscopes, and trace tools.
  • Experience with profiling, timing analysis, unit and integration testing, or CI/CD for embedded systems.
  • Experience with DSP libraries or techniques such as CMSIS-DSP or vendor DSP libraries, and SIMD/vector optimization patterns.
  • Experience with Zephyr or embedded Linux on Arm.
  • Familiarity with bootloaders, secure boot, OTA update mechanisms, and field diagnostics.
  • Understanding of digital communications, audio, or processing domains.
  • Exposure to safety or security standards such as MISRA C/C++, IEC 61508, or ISO 26262.

About the company

C

Cirrus Logic

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cbWebsite

Cirrus Logic designs low-power, high-precision mixed-signal ICs and software for audio and control, primarily for mobile audio, smart home, and wearables. Its products include mobile audio devices, smart home speakers, wearables, and headsets that are integrated into end devices by manufacturers. The company focuses on power-efficient signal processing and collaborates with top device makers, offering ICs, software, services, and development tools. Its goal is to be a leading supplier of audio and mixed-signal solutions that improve user experiences in mobile, smart home, and wearable devices while upholding strong governance and ESG practices.

Company Size

1,001-5,000

Company Stage

IPO

Headquarters

Austin, Texas

Founded

1984

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Simplify Jobs

Simplify's Take

What believers are saying

  • FY2026 revenue hit $2.0 billion and Q1 FY2027 reached $460 million.
  • Cash reached $1.2 billion with no debt, funding R&D and buybacks.
  • Management is expanding into PCs, sensing, and industrials beyond smartphone audio.

What critics are saying

  • Apple drove 90% of Q1 FY2027 sales; one sourcing shift crushes revenue.
  • PC delays already cut FY2027 outlook; OEM launches remain vulnerable through 2027.
  • GlobalFoundries purchase commitments require roughly $600 million through 2028, squeezing flexibility.

What makes Cirrus Logic unique

  • Apple bought 91% of FY2026 Cirrus revenue, locking deep platform integration.
  • GlobalFoundries 2027-2028 wafer agreement secures dedicated capacity and pricing.
  • Cirrus owns premium mixed-signal audio, camera, battery, and power content.

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Benefits

  • Health Insurance
  • 401(k)
  • Paid Time Off
  • Monthly Concerts
  • Weekly Happy Hours
  • Festival Tickets
  • On-Site Med Clinic
  • Community Events

Growth & Insights and Company News

Headcount

6 month growth

5%

1 year growth

4%

2 year growth

4%
Yahoo Finance
Oct 19th, 2026
Cirrus Logic falls 40% from peak as KeyBanc downgrades it on Apple iPhone cut risk

KeyBanc Capital Markets has downgraded Cirrus Logic to "Sector Weight" from "Overweight," warning that Apple may cut iPhone output in 2027. Apple, which accounts for about 90% of the chipmaker's revenue, is reportedly asking suppliers to scale back component production as higher memory costs cool demand. Analyst John Vinh said Apple's cuts to TSMC wafer starts, equal to 15 million to 20 million iPhones, point to weaker volumes. He sees limited growth for Cirrus over the next six to 12 months, and delays in its PC expansion add to the risk. Cirrus shares hit a 52-week low of $105.10 on October 15, down 40% from their May peak of $180.42. The company has a market value of about $5.4 billion and reports quarterly results on November 4.

ICO Optics
Oct 6th, 2026
Cirrus Logic acquires Inventvm to expand power tech.

Cirrus Logic acquires Inventvm to expand power tech. This post contains affiliate links, and I will be compensated if you make a purchase after clicking on my links, at no cost to you. Welcome to its latest deep dive into industry developments, where ICO Optics explore major corporate moves shaping technology landscapes. In this post, ICO Optics examine Cirrus Logic's strategic acquisition of Inventvm Semiconductor to significantly boost its power technology portfolio. This buyout introduces cutting-edge mixed-signal capabilities designed to revolutionize portable and consumer electronics. As part of its ongoing commitment to tech updates, you can find more updates through its optics news coverage. Table of Contents Strategic expansion in power technologies. The acquisition of Inventvm brings specialized engineering expertise directly into the Cirrus Logic ecosystem. This integration focuses heavily on advanced, high-efficiency power conversion and intelligent management integrated circuits. Engineers and technical personnel from Inventvm will seamlessly transition to the acquiring company once final clearances are met. Such technical shifts often parallel innovations seen in high-end spotting scopes and precision measurement tools. Diversifying beyond traditional markets. Company leadership views this strategic move as a pivotal step toward broadening future revenue streams. By moving beyond traditional audio components, the firm aims to capture surging global demand for efficient power systems. Market analysts believe that enhanced power management will unlock new growth sectors across diverse hardware platforms. Similar technological pivots are regularly evaluated in its detailed product reviews. Future market implications and growth. The transaction is currently awaiting standard regulatory approvals and customary closing conditions before final implementation. Once fully completed, the combined technical teams expect to accelerate product development cycles dramatically. This accelerated roadmap promises to introduce robust, power-efficient solutions for next-generation portable applications worldwide. For broader technical reading, feel free to browse its comprehensive collection of optics articles. Enhancing long-term technical capabilities. Integrating Inventvm's specialized intellectual property solidifies the corporation's competitive stance in mixed-signal innovation. Stakeholders anticipate that these combined forces will yield long-term architectural benefits across multiple market segments. Ultimately, this acquisition highlights how mature tech companies continually adapt to meet evolving consumer expectations. Precision engineering remains a vital core driver whether designing semiconductor chips or sophisticated binoculars. Conclusion on semiconductor evolution. The semiconductor industry continues to experience rapid consolidation as firms vie for superior energy-efficient designs. Cirrus Logic's bold step demonstrates a proactive approach to modern power management challenges. ICO Optics will continue tracking these corporate developments and their downstream effects on consumer technology. Stay tuned for more insights into how hardware engineering shapes its modern digital ecosystem. Additional Reading:

Business Wire
Oct 6th, 2026
Cirrus Logic acquires Italian chip designer INVENTVM to expand engineering capacity

Cirrus Logic has acquired INVENTVM Semiconductor, a fabless semiconductor company based in Pavia, Italy that specialises in mixed-signal power management and audio integrated circuits. The acquisition brings engineering expertise, intellectual property, and an established regional presence to support Cirrus Logic's expansion plans. Chief executive officer John Forsyth said the deal adds innovative IP, expands engineering capacity, and supports growth into new applications and markets. The companies have collaborated closely for several years. INVENTVM chief executive officer Michele Chiabrera said joining Cirrus Logic will create opportunities to advance technology and continue innovating as part of a larger global organisation. Financial terms were not disclosed. The transaction will not have a material impact on Cirrus Logic's revenue.

Yahoo Finance
Sep 28th, 2026
Cirrus Logic guides Q2 gross margin to 52-54% amid pricing pressure and supply-chain costs

Cirrus Logic reported a non-GAAP gross margin of 52.7% for its fiscal first quarter 2027, down sequentially due to anticipated pricing reductions, though cost cuts partially offset the decline. Year-over-year, the margin rose slightly on favourable product mix, despite higher freight and supply-chain costs. For the fiscal second quarter, the company expects gross margin between 52% and 54%. Management noted a temporary benefit from lower-cost wafers purchased under prior GlobalFoundries agreements, which will largely sell through this quarter before margins normalise. Cirrus has secured a new wafer supply agreement with GlobalFoundries covering 2027 and 2028, ensuring dedicated capacity and pricing. The company plans aggressive cost reductions and targeted price increases to address input-cost pressures whilst maintaining its long-term gross-margin outlook.

Yahoo Finance
Sep 15th, 2026
Cirrus Logic stock down 27% as PC delays hit, but $761M cash flow funds ongoing buyback

Cirrus Logic stock has dropped about 27% in three months, trading roughly a third below its 52-week high. The decline follows management's August announcement that PC expectations for fiscal 2027 had decreased due to constrained supply, memory shortages, and OEM delays on new models. Despite the setback, the company continues its share buyback programme, which reduced share count by 2.3% over the past year. Over three years, net income grew 45.5% annually whilst earnings per share increased 49.9%, with the gap attributable to share repurchases. Free cash flow covers the buyback more than twice over, with no outstanding debt. The payout equals about 2.8% of market value annually after netting stock compensation. The stock trades at roughly 14 times trailing earnings. However, concentration remains a concern, with one customer driving the core business whilst diversification efforts are still early stage.