Job Title
Analog/mixed-signal IC Design Engineer - Acacia (Hybrid)
Role Summary
Work on a mixed-signal IC design team within Acacia to architect, design, layout, characterize, and productize high-speed CMOS analog/mixed-signal circuits for optical transceivers. Collaborate with digital/DSP, package, system, and module teams to meet signal and power integrity requirements.
This role focuses on high-performance AMS designs for 100G–1.6T+ optical transmission products.
Experience Level
Senior-level. Typical hires meet one of: Bachelor’s + 8 years, Master’s + 6 years, or PhD + 3 years of relevant experience.
Responsibilities
Deliver complex high-speed AMS blocks from specification through production and lead engineering efforts.
- Architect, design, simulate, and verify high-speed analog/mixed-signal IC blocks (serdes, drivers, PLLs, op-amps/PGA, equalizers).
- Lead a large block on complex chips; manage deliverables, mentor team members, and participate in peer reviews.
- Perform and coordinate high-frequency layout and floorplanning to meet signal and power integrity goals.
- Collaborate with packaging, hardware, and system teams to ensure electrical and thermal requirements are achieved.
- Plan and execute laboratory validation, build test setups, and characterize devices across process, voltage, and temperature (PVT).
Requirements
Must-have technical skills and demonstrated experience.
- Design, simulation, and measurement experience with high-speed ICs; practical experience in at least three areas such as serializers/deserializers and data converters; high-performance output drivers; PLLs; clock distribution; op-amps/PGA; equalization techniques; or system link modeling.
- High-frequency layout experience, including floorplanning for mixed-signal chips and routing of power/ground and analog/digital signals.
- Laboratory validation experience, including ESD practices and construction of test setups for device characterization.
- Proficiency with mixed-signal design and simulation tools (for example, Cadence Virtuoso, Spectre/APS/SpectreX, Calibre, EMX, AMS simulations, Matlab).
- Proven ability to lead design reviews, mentor engineers, and deliver designs to production.
Nice-to-have:
- Experience with FinFET and GAA process technologies.
- Experience in electrical transceiver applications (backplane and cable communications).
- Design-for-manufacturability experience: electromigration analysis, self-heating, IR drop, and characterization over PVT.
Education Requirements
Minimum: Bachelor’s degree + 8 years, Master’s degree + 6 years, or PhD + 3 years of related experience; or equivalent practical experience. No specific field-of-study was specified in the posting.
About the Company
Company: Cisco Systems
Headquarters: San Jose, CA, United States
Cisco Systems is a global technology company that designs and sells networking hardware, telecommunications equipment, software, and services. It provides enterprise and service-provider networking, security, collaboration, and optical communications solutions (including Acacia Communications technologies for high-speed optical interconnects).

Date Posted: 2026-07-28