ASIC Engineering Analog Design Leader

Job Summary

Meet the Team

Cisco's Silicon One Optics Group (S1O) designs & delivers the high-speed optical transceivers, and platforms that power Cisco's core data center networking solutions. We specialize in the design and integration of cutting-edge IM/DD optics and silicon photonic platforms that enable customers to deploy industry-leading optical technologies within data center with unprecedented speed, capacity, and reliability. Come join us and take part in shaping S1O's ground-breaking optical solutions by designing, developing, and testing some of the most advanced pluggable, Near Packaged Optics (NPO) and Co-packaged Optics (CPO) being developed in the industry.

You will work with Cisco's best-in-class Silicon Photonics team. Our team is responsible for driving the development and optimization of optical transceivers & modules (800G,1.6T & beyond) that seamlessly integrate with Cisco's routing, switching, and datacenter platforms, enabling customers to build scalable, high-performance networks that support emerging technologies including AI/ML workloads, and next-generation data center architectures.

We seek an experienced High Speed AMS Design Engineer to drive full-chip electrical specifications and deliver mixed-signal design for Cisco's silicon photonics driver integrated circuits supporting 100G/200G/400G per Lambda solutions. You will design high-speed datapath and low-speed control circuit design for receive and transmit paths in our next-generation silicon photonics modules.

Responsibilities

• Participate in analog/mixed-signal design for Cisco's next generation silicon photonics driver integrated circuits for 100G/200G/400G per Lambda solutions.
• Drive full-chip electrical specifications, circuit design, and verification test plans from concept through production, coordinating across electrical, optical, and product teams.
• Author mixed-signal datapath designs including photonics modulator drivers, serializers, PLLs, TIAs and control circuits while optimizing for power, performance, testability, and cost.
• Debug complex silicon and system-level issues during bring-up, and lab validation phases, driving yield enhancements and failure analysis.
• Collaborate with architecture, digital, SI/PI and product teams on verification, design and testability strategies.

Minimum Qualifications

• Bachelors + 7 years of related experience, or Masters + 4 years of related experience, or PhD + 1 years of high-speed AMS design experience
• Demonstrated knowledge in high-speed optical transceiver design (modulator drivers, TIA, CDR, PLLs, ADC/DAC) and proficiency with industry standard tools (Cadence Virtuoso, Spectre, Caliber)
• Proficiency in Python or C for design automation, scripting, and analytical tools

Preferred Qualifications

• Master's or PhD degree in Electrical Engineering
• 6-8 years of hands-on analog/mixed signal circuit design experience
• Experience with silicon photonics driver ICs and direct-detect optical module architectures
• Good understanding of silicon photonics, optical subsystems
• Expertise in one or more high-speed PHYs, protocols and subsystems (SerDes 112Gbps/224Gbps PAM4, Ethernet, UCIE, clock and data recovery systems, PLLs, ADC/DAC circuits)
• Hands-on experience with lab instrumentation (digital communication analyzers, real-time scopes, BERTs), SI/PI and test fixture/PCB
• Familiarity with Verilog-A modeling for AMS simulations
• Strong collaborator, team player with ability to work across teams in multiple sites

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