Digital Design Engineer

Lightmatter is leading the revolution in AI data center infrastructure, enabling the next giant leaps in human progress. The company invented the world’s first 3D‑stacked photonics engine, Passage™, capable of connecting thousands to millions of processors at the speed of light in extreme‑scale data centers for the most advanced AI and HPC workloads.

We are hiring a Digital Design Engineer to help develop an ASIC for the next‑generation artificial intelligence computing architecture alongside a team of world‑class scientists and engineers. You will work in close collaboration with computer architects, software engineers, verification engineers, and physical design engineers to design innovative compute accelerators that work with photonic technology to power the growing AI/ML workloads while keeping power low.

• Develop microarchitecture design and RTL for advanced ML/AI accelerator ASICs/SoCs including advanced memory system and high‑performance NoC.
• Understand and integrate silicon photonic communication and compute technology into digital accelerator design.
• Actively work with Architecture, Design Verification, Implementation, Photonic, Analog and Software teams to realize high performance, low power designs in advanced technology nodes.
• Create design specifications and documentation to facilitate collaboration with partner teams.
• Manage RTL implementation to achieve functionally correct, performant designs within project schedules by identifying, communicating and mitigating risks.

• Experience in ASIC design with multiple successful tape outs.
• 8 years of related experience with a Bachelor’s degree; or 6 years and a Master’s degree in Electrical or Computer Engineering (or related fields).
• Expertise with high-speed digital design techniques.
• Expertise with power-efficient digital design techniques.

• Experience in communication protocols (e.g. PCIe).
• Experience interfacing with memory systems (e.g. HBM/DDR5).
• Knowledge of processor design, accelerators, and/or memory hierarchies.
• Knowledge of machine learning algorithms.

Total compensation includes a base salary of $176,000 USD – $196,000 USD, a new hire equity grant, annual performance-based equity, and other rewards that recognize your impact and contribution.

• 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)

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

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.