DFT Principal Engineer

Join the Cisco Silicon One team and help shape the future of high‑performance networking silicon. Our organization combines a startup‑like culture with the scale and stability of Cisco, enabling deep technical ownership and cross‑disciplinary collaboration.

The Silicon One design center brings together architecture, design, verification, test, manufacturing, and software teams to deliver a unified, programmable silicon architecture powering Cisco's next‑generation routing platforms. Our focus is on building scalable, power‑efficient, and highly reliable SoCs for service provider and web‑scale markets.

As a Principal Engineer specializing in Design for Test, Yield Analysis, and Silicon Diagnosis, you will provide deep technical leadership across the full silicon lifecycle, with a strong emphasis on quality, yield, and manufacturability of advanced SoCs.

• Define and influence DFT architectures, strategies, and methodologies for complex SoCs, ensuring robust testability and diagnosability.

• Provide technical leadership and influence in post‑silicon debug, diagnosis, and yield analysis throughout the entire production lifecycle, from first silicon bring‑up through high‑volume manufacturing.

• Drive advanced yield‑learning and diagnostic flows, including scan diagnosis, cell‑aware and physical‑aware methodologies, and volume diagnostics.

• Perform in‑depth statistical and correlation analysis across multi‑domain data sets (design, test, ATE, manufacturing, and lab data) to identify systematic issues and root causes.

• Collaborate closely with DFT, design, validation, product engineering, reliability, and manufacturing teams, acting as a trusted technical authority.

• Influence improvements in ATPG quality, scan compression efficiency, diagnosis accuracy, and test coverage, leveraging both internal solutions and EDA tool capabilities.

• Partner with EDA vendors to influence tool roadmaps and optimize debug and diagnosis flows for advanced technology nodes.

• Mentor and guide engineers, promoting best practices and strengthening technical expertise across teams.

• Contribute to technical reviews, methodology definition, and knowledge sharing, including internal trainings and external technical forums.

• B.Sc. or M.Sc. in Electrical Engineering, Computer Engineering, or a related field.

• Extensive hands‑on experience in DFT, silicon debug, and diagnosis for complex SoCs.

• Proven experience across the full silicon lifecycle, from pre‑silicon DFT definition to post‑silicon debug and production support.

• Strong expertise in scan insertion, ATPG, and diagnostic methodologies.

• Demonstrated ability to analyze and interpret large, complex data sets for yield and reliability improvement.

• Deep expertise in yield analysis, statistical methods, and volume diagnostics in high‑volume manufacturing environments.

• Experience with cell‑aware, physical‑aware, and advanced diagnosis techniques.

• Proficiency with leading DFT, ATPG, and diagnosis tools.

• Strong background in cross‑functional and multi‑site collaboration.

• Ability to define, standardize, and scale methodologies across multiple products and technology nodes.

• Excellent communication and presentation skills, including experience with technical training or conference presentations.

• Experience with networking, automotive, or high‑reliability silicon products is a plus.

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.