Lightmatter at a glance
lightmattergame.comSEC filings mentioning "Lightmatter": 3 — search EDGAR
Lightmatter
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.
Lightmatter raised $400 million in its Series D round, reaching a valuation of $4.4 billion. We will continue to accelerate the development of data center photonics and grow every department at Lightmatter!
If you’re passionate about tackling complex challenges, making an impact, and being an expert in your craft, join our team of brilliant scientists, engineers, and accomplished industry leaders.
Lightmatter is (re)inventing the future of computing with light!
We are seeking a highly skilled Senior Physical Design Engineer to work on the implementation of complex digital blocks. In this role, you will leverage your expertise in advanced process nodes (3nm) to drive timing closure, power integrity, and physical verification for high-performance ASICs. Beyond standard digital flows, you will have the unique opportunity. To work alongside a team of world-class scientists and engineers in defining how the system will be optimized and trailblaze problems that are new to the photonics industry! If your passion is innovation, solving challenging technical problems and doing impactful work you should join our team!
Responsibilities
- Implement digital blocks in advanced tech nodes from synthesis through physical verification, using industry standard tools and flows
- Understand and debug timing constraints, derates and margins. Review signoff STA reports and fix timing violations for all timing scenarios
- Build and customize power grid and ensure power integrity goals are met
- Understand clock details and be able to customize clock implementation for functional and test clocks
- Debug and clean up DRC/LVS
- Functional and timing ECO implementation
- Be willing to do manual layouts as well as willingness to learn and do silicon photonics layout
- Work with EDA companies to resolve any tool issues
- Write TCL, Python, or Shell scripts to automate flow or customize existing flows
Qualifications
- Bachelor’s in Electrical Engineering or Computer Engineering
- At least 8+ years of industry experience working as a Physical Design Engineer
- Must have completed blocks or top level physical design for large ASICs or mixed signal chips that taped out
- Thorough knowledge of timing closure, LVS/DRC closure
- Experience in TCL and Python (or other scripting languages)
- Strong teamwork skills with the ability to collaborate with multiple functional teams across a variety of fields
- Ability to react to change and thrive in a fast paced environment
Preferred Qualifications
- Masters Electrical Engineering or Computer Engineering
- Hands-on experience with Cadence tools
- Tape-out experience 3nm designs
We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data.
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)
Benefits eligibility may vary depending on your employment status and location. 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.
Export Control
Candidates should have capacity to comply with the federally mandated requirements of U.S. export control laws.
To apply for this job please visit boards.greenhouse.io.
Terms used in this posting
- equity
- Ownership stake in the company, usually in the form of stock options or RSUs, offered in addition to salary.
- hybrid
- A work arrangement combining both in-office and remote/at-home work, typically on a set schedule.
Explore Lightmatter online
What people say about Lightmatter
- The 'impossible' EmDrive could reach Pluto in 18 months?
- Could dark matter not exist?
- A wave of experiments is probing the root of quantum weirdness
- Is The Speed of Light Everywhere the Same?
Recent news
- Lightmatter Revenue, Valuation & Funding History (2024) - GetLatka
- Lightmatter at Computex 2026: The AI Infrastructure Bottleneck Has Shifted from Compute to Interconnect - semivision
- Lightmatter Joins NVLink Fusion Club - Counterpoint Research
- Lightmatter - 2026 Funding Rounds & List of Investors - Tracxn
- The AI boom is running into a copper problem - Business Insider
Aggregated from public discussions and news; opinions are the authors’ own.
Working in Mountain View, Santa Clara County
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Mountain View is a city in Santa Clara County, California, United States, part of the San Francisco Bay Area. Named for its views of the Santa Cruz Mountains, the population was 82,376 at the 2020 census.
California is a U.S. state in the Western United States that lies on the Pacific Coast. It borders Oregon to the north, and Nevada and Arizona to the east; it also shares an international border with the Mexican state of Baja California to the south. With over 39 million residents across an area of 163,696 square miles (423,970 km2), it is the largest U.S. state by population and third-largest by
🇨🇦 Relocation safety for Canada: Very Safe — via Warnely, CC BY 4.0
National unemployment rate in Canada: 6.9% — via World Bank
Recent seismic activity: 1 earthquake (M4.5+) within 200km in the last 6 months — largest M4.6 near 1 km SE of Boulder Creek, CA. via USGS
- Elevation 32m (105 ft)
Source: Wikipedia (state)
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Accommodations: if you need a workplace accommodation to apply for or perform this job, see ADA.gov or EEOC.gov for guidance on your rights and how to request one.
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