Senior Staff Engineer, Firmware Engineering

About Marvell Marvell’s semiconductor solutions are the essential building blocks of the data infrastructure that connects our world. Across enterprise, cloud and AI, and carrier architectures, our innovative technology is enabling new possibilities.  At Marvell, you can affect the arc of individual lives, lift the trajectory of entire industries, and fuel the transformative potential of tomorrow. For those looking to make their mark on purposeful and enduring innovation, above and beyond fleeting trends, Marvell is a place to thrive, learn, and lead.  Your Team, Your Impact The Firmware team at Marvell builds highly integrated component platforms with high speed Silicon photonics, transmit and receive amplifiers, controller ASIC’s with Marvell DSP’s. These components are made operational with a highly functional embedded firmware. The team is responsible for design, verification, and validation of these integrated high speed optical components. The team performs system level testing under various operating conditions, and validates the performance of the hardware, firmware and control loops. An engineer in this team will be involved in a full product lifecycle and will carry new products from inception all the way to NPI. What You Can Expect The SW team is a key enabler for bringing products to production. As a Sr. Staff Software Engineer, you will work closely with SW, HW, and Test teams — as well as experts from systems, customer support, and operations — to drive successful product launches. Core areas of ownership include: Embedded firmware running on our RISC-V-based multi-core MCU, controlling our proprietary DSP data path C SDK provided to customers for interfacing with and controlling our product Python-based GUI for in-field debug, status, and control Build, test, and automated regression infrastructure for all of the above In This Role You Will Design, implement, test, deploy, and maintain firmware for embedded systems, both independently and cross-functionally Serve as the software expert on a block or portion of the design, owning SW architecture, development, and testing of embedded C firmware end-to-end Collaborate with HW and SW teams on system requirements, schematics, and hardware validation Lead bring-ups for next-generation Marvell products and travel to worldwide offices for chip bring-up (~3 weeks/yr; Ottawa, California, Italy, Vietnam) Lead difficult debug efforts, drive to root causes with HW/Systems teams, and follow through with test, validation, and customer support to ensure full resolution Optimize firmware for performance, reliability, and power consumption Participate in and lead design reviews, code reviews, and debugging sessions Plan SW milestones, develop in sprints, close tickets, and roll out features across multiple test disciplines Execute frequent firmware releases for both internal use and external customers Develop and maintain documentation including functional specs, design documents, test specifications, user guides, and examples Stay current with industry trends and emerging technologies Example Tasks Mentor interns or new hires to help them ramp up and integrate into the team Develop Python test scripts to configure, control, and gather status from multiple DSP hardware platforms to improve firmware stability Break up and optimize subroutines to maximize efficiency across a multi-core MCU architecture Design and implement unit testing processes for firmware code Collaborate with teammates to review code, analyze test results, and debug complex customer issues Implement new temperature tracking algorithms for DSP/analog control to improve device performance across temperature ranges What We're Looking For BS/MS degree in Computer Science, Electrical/Software Engineering, or related technical field(s); BS with 5+ years of experience or MS with 2–3 years in memory-constrained embedded C/C++ firmware development Experience with technical ownership on embedded projects: task management, release planning, architecture, design, development, code reviews, testing, and delivery through customer volume production Experience with various microprocessor architectures (ARM or RISC-V; RISC-V a plus) Understanding of embedded SoC and micro-controller architecture, memory-mapped hardware interfaces, GPIOs, ISRs, RTOS, queuing, memory management, and interrupt processing Embedded device driver experience in communications protocols (e.g., SPI, I2C, MDIO, UART) Experience writing control firmware for: CDR, Flash/EEPROM, Laser Driver, TEC Controller Understanding of parameter calibration techniques (e.g., interpolation, splines) Expert C and Python programming skills; working knowledge of git, Linux, makefiles, gdb, IDEs, bash, etc. Hands-on debug skills on real hardware using oscilloscopes, logic analyzers, JTAG, and other embedded diagnostics tooling Working knowledge of hardware design schematics Excellent verbal and written communication skills in English; ability to collaborate across a large, remotely located cross-functional organization Excellent multitasking skills Preferred Qualifications Experience with SERDES, IM-DD/Coherent DSP, Ethernet/PCIe PHYs, and/or Optical Module SW Experience designing, developing, and debugging software state machines, transitions, context saving, and error handling Experience with mixed-signal (analog+digital) control and monitoring, PID/feedback loop control, etc. Experience with bare-metal, device drivers, or Linux kernel development Familiarity with advanced compiler options (clang/gcc preferred) Familiarity with digital verification test flows, FPGA emulation, and hardware languages such as Verilog Familiarity with lab equipment such as power supplies, PNAs, ONTs, etc. Understanding of Ethernet networking from the OSI model, with emphasis on the PHY up to the data link level Familiarity with forward error correct