Lightmatter
Sr. Staff Physical Design Engineer
Boston, MA · Staff+ · Full-time
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DOL prevailing wage, 2026-27 wage year · Electronics Engineers, Except Computer (17-2072) · Boston-Cambridge-Newton, MA-NH. Wage level is derived by USCIS from the offered wage, occupation and worksite; the occupation shown is inferred from the job title.
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About the role
- 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.
Responsibilities
- Implement digital blocks in advanced tech nodes from synthesis through physical verification, using industry standard tools and flows
- Drive fullchip STA signoff, review constraints, debug timing reports and implement ecos
- Drive power analysis and optimization while balancing area and performance trade-offs
- Drive full chip floor planning, IO placement and clock distribution
- 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.
Requirements
- Bachelor's in Electrical Engineering or Computer Engineering
- 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)
- Ability to react to change and thrive in a fast paced environment
- 12+ years of industry experience working as a Physical Design Engineer
- Strong teamwork skills with the ability to collaborate with multiple functional teams across a variety of fields
Nice to have
- Masters Electrical Engineering or Computer Engineering with 8 years of industry experience
- Hands-on experience with Cadence tools
- Be willing to do manual layouts as well as willingness to learn and do silicon photonics layout
- EM/IR analysis using standard industry signoff tools
Compensation
- total compensation goes beyond base salary, it also includes a new hire equity grant, annual performance-based equity, and other rewards that recognize your impact and contribution.
- $217,000 - $267,000 USD
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
- Commuter Benefits
- 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.
- Flexible, hybrid workplace model
Company info
- We are seeking a highly skilled Senior Physical Design Engineer to work on the implementation of complex digital blocks.
Visa & Work Authorization
- Export Control
This listing is sourced directly from Lightmatter's careers page and normalized into a canonical job model.