ASIC High Speed AMS Technical Leader

The application window is expected to close on: 06/01/2026 Job posting may be removed earlier if the position is filled or if a sufficient number of applications are received . Meet the Team Cisco’s Client Optics Group (COG) 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 innovative 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 COG’s ground-breaking optical solutions by designing, developing, and testing some of the most advanced pluggable, 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 are seeking an experienced High Speed AMS Design Engineer to lead full-chip electrical specifications and mixed-signal design for Cisco's silicon photonics driver integrated circuits supporting 100G/200G/400G per Lambda solutions. You will own high-speed datapath and low-speed control circuit design for receive and transmit paths in our next-generation silicon photonics modules. Your Impact Provide technical leadership in analog/mixed-signal design for Cisco's next generation silicon photonics driver integrated circuits for 100G/200G/400G per Lambda solutions. Lead 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. Mentor and guide analog, digital, and validation engineers while collaborating with architecture and product teams on verification and testability strategies. Minimum Qualifications Bachelors 12 years of related experience, or Masters 8 years of related experience, or PhD 5 years of high-speed AMS design experience Demonstrated expertise in high-speed optical transceiver design (modulator drivers, TIA, CDR, PLLs, ADC/DAC) and proficiency with industry standard tools (Cadence Virtuoso, Spectre, Caliber, SystemVerilog, Verilog-AMS) Demonstrated ability to lead design teams through full tapeout cycle, making critical decisions with limited data and delivering successful silicon products Proficiency in Python or C for design automation, scripting, and analytical tools Preferred Qualifications 10-15 years of analog/mixed signal circuit design experience Experience with silicon photonics driver ICs and direct-detect optical module architectures Strong understanding of silicon photonics, optical subsystems, MSA standards (QSFP/QSFP-DD), and IEEE 802.3 specifications Expertise in multiple high-speed PHYs, protocols and subsystems (SerDes 112Gbps/224Gbps PAM4, Ethernet, UCIE, clock and data recovery systems, PLLs, ADC/DAC circuits) Demonstrated experience in design for testability (DFT) and test methodology development for large mixed-signal designs Proven experience with lab instrumentation (digital communication analyzers, real-time scopes, BERTs), SI/PI and test fixture/PCB Familiarity with optical sub-component models (photodiodes, modulators) and Verilog-A modeling for AMS simulations Strong collaborator and teammate wit ... (truncated, view full listing at source)