Lightmatter logo
Lightmatter
Verified live 2d ago

Staff Physical Design Timing Engineer (STA)

Brief overview

Mountain View, CA +1In-person
UndergradOr in progress
$163k–$182k/yrStated range
8+ yrsMinimum
34 H-1B approvalsDept. of Labor
2 green cardsCertified filings
STA (Static Timing Analysis)Timing closureTiming constraints developmentSynthesisPlace and routeTapeout signoffTempusPrimeTimeTCLPythonPERLShellCMOS technologiesOn-chip variation deratesMulti-mode multi-corner constraintsClock tree synthesis

About the company

Lightmatter logo
Lightmatterlightmatter.co

Lightmatter develops photonic chips that enable data processing and communication using light instead of electricity.

Visa sponsorship history

4 years sponsoring, last filed FY2026

Data powered by U.S. Department of Labor. This does not guarantee sponsorship for this specific role.
34H-1B approved
100%approval rate
4new H-1B hires
2PERM certified
$197,360median wage / yr
H-1B Petition ApprovalsVisas USCIS actually granted: the strongest sign the company sponsors.
20235
202410
202517
20262
LCA Certified ApplicationsAn early filing step, not a visa approval: it signals intent, not confirmed sponsorship.
20235
20243
20256
20263
Green Card (PERM) FilingsCertified green card filings: a long-term commitment to international hires.
20232
Top sponsored roles
Staff Analog IC Design EngineerStaff Mechanical Design EngineerSr. Reliability EngineerStaff Thermal EngineerSr. Staff Field Application Engineer
Sponsored employees from
India

Job description

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!

About this role

We are hiring a Physical Design Timing Engineer to help drive backend digital execution for some of the leading photonics based interconnect solutions. You will 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 industry. If your passion is innovation, solving challenging technical problems and doing impactful work you should join our team.

In this job you will be responsible for timing constraints development, STA and timing closure on  leading edge CMOS technologies and flows. This includes synthesis through place and route, timing closure, and tapeout signoff.

Responsibilities

  • Drive the STA sign-off  for our flagship Silicon photonics chips at various technology nodes. 
  • Analyze fab guidelines and work with the methodology team to incorporate sign off corners, margins, and derates into timing analysis flows and methodologies.
  • Collaborate with the  architecture, RTL, and DFT teams to analyze the timing complexities and develop consolidated timing modes and constraints for synthesis, along with PnR and chip timing sign-off flows.
  • Analyze and understand the tradeoffs between power/performance and area goals to drive them into overall chip implementation flows.
  • Run full-chip STA and accurately project the timing summary across scenarios.
  • Leverage Tempus/PrimeTime to automate timing ECO generation for effective closure and support physical design implementation.
  • Document best practices and lessons learned to drive continuous improvements in future projects.

Qualifications:

  • Bachelor’s degree in Electrical Engineering or Computer engineering
  • A minimum of 8 years of hands-on experience in ASIC STA and timing constraints development, timing closure with Cadence or Synopsys tools 
  • Experience in driving timing closure by effectively managing on-chip variation derates, optimizing multi-mode multi-corner constraints, and implementing robust clock tree building strategies
  • Well versed with scripting languages like TCL and Python, PERL, or Shell
  • Strong problem solving skills with attention to every technical aspect
  • Be a strong team player with clear and precise communication skills

Preferred Qualifications:

  • Master’s degree in Electrical Engineering or Computer engineering
  • A minimum of 6 years of hands-on experience in ASIC STA and timing constraints development, timing closure with Cadence or Synopsys tools 

We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data.

Salary Range: 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.
$163,000—$182,000 CAD

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. 

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