Cisco

ASIC Link Modeling Technical Leader

Cisco$189K — $271K *
Telecommunications & Hardware
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelors + 12 years or Masters + 8 years or PhD + 5 years of ASIC link modeling experience
  • Proficiency in Python, C/C++, and MATLAB for model development
  • Strong understanding of high-speed communication theory and related protocols
  • Experience with EDA and SI simulation tools like Keysight ADS and Synopsys HSPICE
  • Excellent analytical and problem-solving skills with a collaborative mindset

Responsibilities

  • Develop system-level behavioral models and link simulations for silicon photonics systems
  • Lead link budget analysis and statistical simulations to assess performance metrics
  • Define and optimize transceiver architectures and DSP algorithms through simulations
  • Debug complex link simulations and validate performance through correlation
  • Collaborate with cross-functional teams to create IBIS-AMI models and supporting documentation

Benefits

  • Work with Cisco's leading team in Silicon Photonics
  • Engage in groundbreaking optical solutions development
  • Opportunity to shape the future of high-speed networking technologies
  • Collaborative environment with a focus on innovation
  • Participate in projects supporting next-gen data center architectures
Full Job Description
The application window is expected to close on: 05/30/2026
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 centers 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 a hardworking and experienced ASIC Link Modeling Engineer to join our team and be a collaborative modeler for Cisco's silicon photonics systems for next generation products for 100/200/400G per Lambda solutions. You will be a part of a wider team architecting and modeling high-speed SerDes, optical DSP (ODSP), die-to-die (D2D) interfaces, receive and transmit paths in silicon photonics modules and CPO/NPO solutions.

Your Impact
  • Develop system-level behavioral models and comprehensive link simulations for Cisco's silicon photonics systems, enabling performance analysis across high-speed SerDes, optical DSP, and die-to-die interfaces for next-generation 100G/200G/400G per Lambda solutions.
  • Lead link budget analysis, channel modeling, and statistical simulations to evaluate jitter, noise, crosstalk, and bit error rate (BER) across transmit and receive paths.
  • Define and optimize transceiver architectures including TX/RX equalization (FFE, CTLE, DFE), clock and data recovery behavior, and DSP algorithms through behavioral modeling and simulation.
  • 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.


Minimum Qualifications
  • Bachelors + 12 years of related experience, or Masters + 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) and link modeling methodologies
  • Analytical, problem-solving, and debugging skills with excellent communication and teamwork abilities


Preferred Qualifications
  • Preferred experience 8-12 years.
  • 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

About Cisco

Cisco Careers

Join the vibrant team at Cisco, a global leader in networking and cybersecurity solutions, where innovation and leadership thrive. Cisco offers a plethora of job opportunities that cater to a range of skills and experiences, making it an ideal place for both seasoned professionals and those seeking an internship to jumpstart their career. Work You’ll Do At Cisco, you’ll be part of a culture that values diversity, leadership, and professional growth. Engage in work that matters with a team that combines technology, creativity, and the power of human connection to redefine networking. Cisco’s commitment to innovation isn’t just about technology, but also about transforming the way we work and collaborate. Cisco’s employment philosophy supports career advancement and nurtures a leadership pipeline that is equipped with diversity training and opportunities for growth. Whether you’re applying your skills to drive our latest innovations or using our vast networking capabilities to solve complex problems, at Cisco, every role is impactful. Join Our Dynamic Team Explore job opportunities in areas ranging from engineering to marketing, sales to cybersecurity. Cisco is hiring individuals who are passionate, curious, and ready to drive change. Positions at Cisco offer competitive benefits, a supportive culture, and the chance to work with cutting-edge technology. Internship Programs Kickstart your career with a Cisco internship. Gain invaluable industry experience, enhance your resume, and build professional networks that last a lifetime. Our internships provide hands-on experience and the chance to work on projects that matter. Leadership and Development Cisco is committed to fostering leadership skills and providing employees with the training needed to succeed. Our leadership programs help you develop new skills, manage teams effectively, and lead with confidence. Cisco’s commitment to professional development ensures that your career path is as dynamic as our technologies. Benefits and Culture Cisco understands the importance of a balanced life. Our benefits package is designed to ensure that our team members are healthy, happy, and secure. At Cisco, you’ll find a supportive culture that encourages open communication, teamwork, and mutual respect. Stay Connected Join Cisco’s Talent Network Stay informed about new positions that match your skills and interests. At Cisco, we value the curiosity and unique perspectives of our team members. Subscribe to receive personalized job alerts and insider tips directly from our hiring managers. Explore Cisco Jobs Ready to advance your career at Cisco? Search open positions, prepare your resume, and get ready for an interview that could lead to your next big opportunity. At Cisco, we’re not just filling positions—we’re investing in leaders. Keep Up to Date Stay ahead with career tips, insider perspectives, and industry-leading insights you can put to use today—all from the people who work here. READ CAREERS BLOG Job Alert Emails Customize your subscription to receive job alerts, the latest news, and insider tips tailored to your preferences. Discover the exciting and rewarding career opportunities that await you at Cisco.
Learn more about Cisco
Size
79,500 employees
Market Cap
$194.5 billion
Industry
Net Income
$10.1 billion
Founded
2014
5 Year Trend
+1.4%
Revenue
$48 billion
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