Job Title
Analog/Mixed-Signal IC Design Engineer - Acacia
Role Summary
Member of the Acacia mixed-signal IC design team developing high-speed analog circuits for optical transceivers (100G–1.6T+). Work across analog, digital/DSP, package and module teams to deliver silicon from architecture through production.
This is a hybrid role with an expected in-office cadence of three days per week in San Jose, CA.
Experience Level
Senior-level. See Education Requirements for the formal degree + years combinations that indicate the expected experience level.
Responsibilities
Design, validate and productize high-speed mixed-signal blocks for optical transceivers; lead technical efforts and coordinate across disciplines.
- Architect, circuit-design, layout and measurement of ultra-deep-submicron CMOS mixed-signal ICs.
- Lead a large block on complex chips, track deliverables and drive schedules to production.
- Mentor and review work from other designers; perform peer reviews and enforce design methodology.
- Collaborate with digital/DSP, package, system and hardware teams to meet signal and power integrity targets.
- Develop and validate test setups and lab measurements; support characterization across PVT and operating conditions.
Requirements
Key technical skills and domain expertise required. Candidates should demonstrate strong hands-on AMS design, validation and cross-team collaboration.
- Demonstrated experience designing, simulating and measuring high-speed ICs in at least three of the following areas: serializers/deserializers and data converters; system link modeling; high-performance output drivers; phase-locked loops (PLLs); clock transmission/propagation; opamps and programmable gain amplifiers; equalization techniques.
- Proven ability to take complex analog blocks from concept through layout, verification and silicon bring-up.
- Experience with high-frequency layout and floorplanning to support analog/digital segregation, power and signal routing.
- Practical lab validation experience, including test-setup construction and measurement instrumentation.
- Strong problem-solving, communication skills and experience mentoring or leading small design teams.
- Familiarity with mixed-signal simulation flows and layout verification tools.
Nice-to-have:
- Experience with electrical transceiver applications (backplane and cable links).
- Experience with FinFET or GAA process technologies.
- Design-for-manufacturability experience: characterization over PVT, electromigration, self-heating and IR drop analysis.
- ESD practices and advanced lab validation methodologies.
- Tool experience: Cadence Virtuoso, Spectre/APS/SpectreX, Calibre, EMX, AMS simulation and MATLAB.
Education Requirements
One of the following combinations is required: Bachelor's degree plus ~8 years related experience, Master’s degree plus ~6 years related experience, or PhD plus ~3 years related experience (as listed in the posting). 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: 2026-07-07