ASIC Link Modeling Technical Leader

About the role

Cisco’s Client Optics Group (COG) is seeking an experienced ASIC Link Modeling Engineer to join our team. This role involves developing and optimizing high-speed silicon photonics systems, including SerDes, optical DSP, and die-to-die interfaces, for next-generation 100G/200G/400G per Lambda solutions.

Responsibilities

• Develop system-level behavioral models and comprehensive link simulations for Cisco's silicon photonics systems.
• Lead link budget analysis, channel modeling, and statistical simulations to evaluate jitter, noise, crosstalk, and bit error rate (BER).
• Debug complex link simulations, identify architectural bottlenecks, and correlate pre-silicon models with post-silicon lab measurements to validate design performance.
• Collaborate across cross-functional teams to develop IBIS-AMI models, create modeling documentation, and support product release from concept through production.

Requirements

• Bachelor’s + 12 years of related experience, or Master’s + 8 years of related experience, or PhD + 5 years of ASIC link modeling experience.
• Proficiency in Python, C/C++, and MATLAB for behavioral model development and automated analysis.
• Proven understanding of high-speed communication theory, transmission line theory, SerDes, Ethernet, D2D PHY protocols, and DSP fundamentals.
• Demonstrated experience with EDA and SI simulation tools (e.g., Keysight ADS, Synopsys HSPICE, Cadence).
• Analytical, problem-solving, and debugging skills with excellent communication and teamwork abilities.

Preferred Qualifications

• Experience with optical DSP (ODSP), integrated transceiver features, and PAM4 modulation techniques.
• Familiarity with IBIS-AMI model development to support customer & system-level signal integrity simulations.
• Experience with Linux-based development environments and scripting automation (Perl, TCL).
• Knowledge of ASIC/SoC design flow, understanding of multi-functional impacts on link performance (packaging, PCB, optics).
• Post-silicon validation experience and correlation of lab measurements with pre-silicon models.

Benefits

At Cisco, we offer competitive compensation, including a starting salary range of $189,300.00 to $271,500.00, depending on location and experience. Additional benefits include medical, dental, and vision insurance, a 401(k) plan with a Cisco matching contribution, paid parental leave, short and long-term disability coverage, and basic life insurance. Cisco also provides generous paid time off, flexible vacation time off, and optional paid days off for personal wellness. For quota-based sales roles, incentive compensation is included in the base pay range.