Principal Software Engineer
The application window is expected to close on: 08/17/2026Job posting may be removed earlier if the position is filled or if a sufficient number of applications are received.Meet the Team:The Common Hardware Group (CHG) creates innovative hardware platforms central to the AI era, powering Cisco’s core Switching, Routing, and Wireless products for organizations globally. Our innovations in silicon, optics, and hardware platforms—like Silicon One—are shaping the technology industry. We're a global team of creative experts, bringing our unique backgrounds and bold ideas to push boundaries and help each other grow. Because full product development—from design to qualification to production—is within our team, we’re able to think differently, experiment more, and work quickly. Join us to power the future of the digital world. Your ImpactArchitect and develop BIOS, BSP, and diagnostics for Cisco's Core and Edge routing products. Design, develop, and test device drivers for FPGA and networking peripherals. Develop and execute software test plans. Collaborate with cross-functional teams to debug prototypes and validate software. Innovate and drive unique software, hardware, and technology solutions with a global impact on Cisco's product portfolio. Utilize deep technical expertise for complex consultations and act as an expert both internally and externally. Shape technology and industry trends to enable a competitive advantage and ensure long-term business impact. Minimum Qualifications Bachelor’s degree in Electrical Engineering, Computer Science, or related field with 15+ years experience, or Master’s degree with 12+ years experience. Proficient in C, C++, and Python programming for embedded systems. Experience in hardware and device driver development, including Linux hardware bring-up, multi-threading, event handling, and state machine implementation. Experience with Sonic, ONIE, BMC, IPMI, and/or Redfish technologies. Skilled in developing, debugging, and validating embedded systems using protocols such as I2C, SPI, UART, PCIe, GPIO. Preferred Qualifications Proficient in kernel debugging tools such as GDB and KGDB. Experience leading board bring-up, validation, and debugging of embedded systems. Ability to develop software from concept through delivery for large-scale, high-bandwidth systems. Strong troubleshooting skills for software defects from kernel modules to applications. Experience in collaborative system design, specification writing, and requirements review. Commitment to quality, mentoring, and continuous learning in networking, optics, and embedded systems. AI/ML experience and knowledge of Layer 2/3 network protocols, network processors, optica...