Lightmatter · 17 hours ago
Sr./Principal Mixed Signal Digital Architect
Mountain View, CA
Full-time
Hybrid
Senior Level, Lead/Staff
$205K/yr - $284K/yr
12+ years expLightmatter is leading the revolution in AI data center infrastructure, enabling the next giant leaps in human progress. They are seeking a Sr./Principal Mixed-Signal Digital Architect to partner with teams to deliver groundbreaking products and define the architecture of digital circuits for their photonic-based communication fabric.
Artificial Intelligence (AI)Data CenterMachine LearningSemiconductorSoftware
Responsibilities
Be the digital architecture owner of Lightmatter’s Passage product. Work closely with the rest of the architecture team, chip-design team, and the software team
Responsible for the digital architecture from initial concept through high-volume production. Work closely with the technical program manager(s) to plan, organize, and execute
Lead direct collaboration with top tier semiconductor customer(s) throughout the product development process at the system architecture level
Architect and specify system level digital designs integrating complex AMS and photonic circuits. These circuits include high-speed drivers and receivers, SerDes, ADC/DAC, photonic modulators and detectors
Collaborate with the product team to develop our future technological and product roadmap
Work closely with test and validation engineers to validate hardware against simulation prediction
Actively collaborate with the RTL and DV teams to enable block-level implementation and verification, respectively
Author, review, and validate architectural specifications. With the product and applications engineering teams, also produce customer-facing product datasheet and reference designs
Identify possible improvements as well as possible pitfalls (including mitigation strategies) around executing the proposed architectures
Qualification
Required
12+ years and a Masters' degree in Electrical or Computer Engineering
In-depth knowledge of power-efficient digital design flow for high-speed AMS electronics, preferably on photonic communication channels
Proven track record of delivering successful high-volume silicon in the market. Also, proven understanding of silicon product development flow
In-depth knowledge of digital circuit design in a high-speed analog/photonic link, including device bring-up, control, and digital signal processing
Demonstrated strong problem solving skills specifically pertaining to problems that do not have obvious solutions
Demonstrated strong customer communication, with timely responses and consistently positive feedback
Preferred
Understanding of SerDes PCS layer and equalization along with forward error-correction schemes
Ability and desire to collaborate in a cross-disciplinary team
Power user of multiple development tools, including CAD tools, SPICE simulators, IBIS-AMI simulators, and general programming languages (e.g., MATLAB or Python)
Benefits
Comprehensive Health Care Plan (Medical, Dental & Vision)
Retirement Savings Matching Program
Life Insurance (Basic, Voluntary & AD&D)
Generous Time Off (Vacation, Sick & Public Holidays)
Paid Family Leave
Short Term & Long Term Disability
Training & Development
Commuter Benefits
Flexible, hybrid workplace model
Equity grants (applicable to full-time employees)
Company
Lightmatter
Lightmatter develops photonic chips that enable data processing and communication using light instead of electricity.
201-500 employees
H1B Sponsorship
Lightmatter has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (21)
2024 (12)
2023 (5)
2022 (4)
2021 (4)
2020 (4)
Funding
Current Stage
Late StageTotal Funding
$822MKey Investors
T. Rowe PriceViking Global InvestorsGoogle Ventures
2024-10-16Series D· $400M
2023-12-19Series C· $155M
2023-05-31Series C· $154M
Leadership Team
Nicholas Harris
Founder, CEO
B
Bob Turner
Sr. VP Sales & Solution Architecture
Recent News
2025-11-23
2025-10-09
Company data provided by crunchbase