Senior Circuit Design Engineer-Optical Interconnects for AI

Quintessent Inc.; California (MO); On-site; USD 120,000 - 180,000; Full time

Job summary

Quintessent Inc. is advancing AI infrastructure with a laser platform for scalable data centers. We seek a senior circuit design engineer to own high-speed electronics for pluggable optical interconnects, from spec to silicon bring-up, with firmware influence on product direction.

You will design analog and mixed-signal blocks (SerDes, PLL, ADC/DAC) and DWDM interconnects, collaborate with layout, RTL, and firmware teams, and drive Cadence simulations and ATE tests to ensure production readiness.

Qualifications

• B.S. or M.S. in Electrical engineering.
• Strong analog design expertise.
• Experience with high-speed SerDes, PLL, ADC, DAC design.
• Experience in optical Driver, TIA design is an asset.
• Ability to go from spec to block diagram, schematic capture, layout reviews, and Monte Carlo simulations.
• Hands-on use of Cadence tools to generate, simulate, and assemble unit blocks and top-level blocks.
• Collaborate with layout, RTL, and firmware engineers.
• Knowledge of DFT tool flow for high-speed circuits and associated ATE and systems testing is an asset.

Responsibilities

• Develop firmware guidance for products as the technical authority.
• Build or select electronics for optical interconnect products (compensation circuits, driver, TIAs).
• Develop circuits for next-generation DWDM-based interconnects.
• Collaborate with layout, RTL, and firmware teams to bring blocks to production.

Skills

Analog design

High-speed SerDes

PLL design

ADC/DAC design

Schematic capture

Block diagram development

DFT tool flow

Monte Carlo simulations

Firmware integration

Education

B.S. or M.S. in Electrical engineering

Tools

Cadence tools

Layout review processes

Simulations

Job description

Quintessent Inc. is advancing AI infrastructure with a laser platform for scalable data centers. We seek a senior circuit design engineer to own high-speed electronics for pluggable optical interconnects, from spec to silicon bring-up, with firmware influence on product direction.

You will design analog and mixed-signal blocks (SerDes, PLL, ADC/DAC) and DWDM interconnects, collaborate with layout, RTL, and firmware teams, and drive Cadence simulations and ATE tests to ensure production readiness.