Mixed-Signal Validation Engineer

Job Summary

Lightmatter is recruiting a Mixed‑Signal Architecture Validation Engineer to partner with the internal engineering team to deliver groundbreaking photonic‑based communication fabric products.

• Own mixed‑signal architecture validation for Lightmatter’s Passage product line.
• Influence the mixed‑signal architecture from initial concept through high‑volume production.
• Validate and specify system‑level mixed‑signal designs, integrating complex AMS and photonic circuits such as high‑speed drivers and receivers, Ser Des, ADCs/DACs, digital controllers, and photonic modulators and detectors.
• Work closely with test and validation engineers to validate hardware against simulation predictions.
• Collaborate with DV team to translate pre‑silicon verification into post‑silicon validation.
• Support architectural‑level firmware validation.
• Author, review, and validate architectural specifications and test methodologies.
• Identify improvements and potential pitfalls, including mitigation strategies, regarding the execution of the proposed architectures.

• MS in Electrical Engineering or a related field with 7+ years of relevant experience.
• In‑depth knowledge of design flows for AMS electronics, preferably on photonic communication channels.
• Proven track record of delivering successful high‑volume silicon to market and a thorough understanding of the silicon product development flow.
• In‑depth knowledge of mixed‑signal circuit design in a high‑speed analog/photonic link, including device bring‑up, control, and digital signal processing.
• Hands‑on experience with lab instruments and test setups.
• Demonstrated strong problem‑solving skills, specifically for problems that do not have obvious solutions.
• Ability and desire to collaborate in a cross‑disciplinary team.

• Understanding of Ser Des PCS layer and equalization, along with forward error‑correction schemes.
• Power user of development tools, including AI agents, CAD tools, SPICE simulators, IBIS‑AMI simulators, and programming languages such as MATLAB or Python.
• Experience in optical link bring‑up and debug.

Salary Range: $186,000 USD – $210,000 USD (total compensation includes base salary, new hire equity grant, annual performance‑based equity, and other rewards).

• 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)

Lightmatter recruits, employs, trains, compensates, and promotes regardless of race, religion, color, national origin, sex, disability, age, veteran status, and other protected status as required by applicable law.

Candidates should have capacity to comply with the federally mandated requirements of U.S. export control laws.