PHY Firmware Engineer

Meet the Team

Join the Cisco Silicon One PHY System team, part of Cisco’s core silicon development group.

Our team is responsible for PHY and system-level aspects of some of the most advanced networking devices in the industry, including PHY firmware, calibrations, system definitions, operations, and post-silicon validation.

We work with the latest silicon technologies and processes to build large-scale, highly complex devices at the edge of feasibility. You’ll be part of a unique design center that hosts all silicon HW and SW disciplines under one roof, operating in a startup-like environment within a stable, world-leading company.

Cisco Silicon One™ is transforming the industry with a unified, programmable silicon architecture that powers Cisco’s future routing portfolio and helps shape the Internet for decades to come.

Your Impact

• Develop PHY firmware and system-level features for advanced networking ASICs
• Design and implement PHY calibrations and system definitions
• Participate in post-silicon validation, including lab bring-up, debugging, and performance analysis
• Collaborate closely with PHY, system, firmware, and silicon design teams
• Contribute to defining system operation modes and end-to-end device behavior
• Help drive the development of next-generation, high-scale networking solutions using cutting-edge silicon technologies
  
  

Who You’ll Work With

• The Cisco Silicon One group, the center of Cisco’s ASIC design efforts
• Cross-functional teams including silicon design, firmware, system, and validation engineers
• Global teams working together to deliver game-changing networking devices
  
  

Minimum Qualifications

• B.Sc. or M.Sc. in Electrical Engineering or Computer Science from a top university
• 3+ years of relevant experience in system, PHY, firmware, or silicon-related development
• Strong system-oriented mindset with a multi-disciplinary approach
• Ability to work on complex problems while multitasking across domains
  
  

Preferred Qualifications

• Background in communications and signal processing
• Hands-on lab experience (bring-up, measurements, validation)
• Experience with C++, Python, and MATLAB
• Familiarity with PHY systems, calibrations, or post-silicon validation
• Experience working in cross-functional, fast-paced development environments
  
  

Why Cisco?

At Cisco, we’re revolutionizing how data and infrastructure connect and protect organizations in the AI era – and beyond. We’ve been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds. These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint.

Fueled by the depth and breadth of our technology, we experiment and create meaningful solutions. Add to that our worldwide network of doers and experts, and you’ll see that the opportunities to grow and build are limitless. We work as a team, collaborating with empathy to make really big things happen on a global scale. Because our solutions are everywhere, our impact is everywhere.

We are Cisco, and our power starts with you.