Lightmatter Logo

Lightmatter

Sr. Staff Physical Design Timing Engineer (STA)

Posted 7 Days Ago
Be an Early Applicant
In-Office
Boston, MA, USA
217K-267K Annually
Senior level
In-Office
Boston, MA, USA
217K-267K Annually
Senior level
Lead STA sign-off and timing closure for silicon-photonics ASICs across process nodes. Develop timing constraints, run full-chip STA, automate ECOs with Tempus/PrimeTime, collaborate with RTL/DFT/architecture teams, and document best practices for synthesis through PnR and tapeout signoff.
The summary above was generated by AI

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
  • 12 years of Physical Design experience, with a minimum of 5 years 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 8 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.
$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
  • 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. 

HQ

Lightmatter Boston, Massachusetts, USA Office

At Lightmatter, we have a flexible work structure; employees work remotely and work from our physical offices located in Boston, MA, and Mountain View, CA

Similar Jobs

2 Minutes Ago
In-Office
01801, Woburn, MA, USA
60K-75K Hourly
Entry level
60K-75K Hourly
Entry level
Marketing Tech • Sales • Consulting
Drive post-sale customer satisfaction and retention through consultative sales, onboarding, and proactive account management. Resolve client issues, identify upsell opportunities, record interactions in CRM, collect feedback, and participate in training and shadowing to grow into sales or account roles.
Top Skills: Crm Systems
An Hour Ago
Remote or Hybrid
United States
168K-255K Annually
Junior
168K-255K Annually
Junior
Artificial Intelligence • Information Technology • Machine Learning • Natural Language Processing • Productivity • Software • Generative AI
Manage a portfolio of educational accounts to grow ARR through upsells and renewals. Prospect within accounts, build stakeholder relationships, develop strategic plans and business cases, maintain CRM records, collaborate with Customer Success, and report forecasts, risks, and opportunities to management.
Top Skills: CRM
An Hour Ago
Remote or Hybrid
United States
Senior level
Senior level
Fintech • Software
The Customer Enablement Program Lead will coordinate customer education and enablement initiatives, support cross-functional teams, and improve operational effectiveness.
Top Skills: LmsProject Management Tools

What you need to know about the Boston Tech Scene

Boston is a powerhouse for technology innovation thanks to world-class research universities like MIT and Harvard and a robust pipeline of venture capital investment. Host to the first telephone call and one of the first general-purpose computers ever put into use, Boston is now a hub for biotechnology, robotics and artificial intelligence — though it’s also home to several B2B software giants. So it’s no surprise that the city consistently ranks among the greatest startup ecosystems in the world.

Key Facts About Boston Tech

  • Number of Tech Workers: 269,000; 9.4% of overall workforce (2024 CompTIA survey)
  • Major Tech Employers: Thermo Fisher Scientific, Toast, Klaviyo, HubSpot, DraftKings
  • Key Industries: Artificial intelligence, biotechnology, robotics, software, aerospace
  • Funding Landscape: $15.7 billion in venture capital funding in 2024 (Pitchbook)
  • Notable Investors: Summit Partners, Volition Capital, Bain Capital Ventures, MassVentures, Highland Capital Partners
  • Research Centers and Universities: MIT, Harvard University, Boston College, Tufts University, Boston University, Northeastern University, Smithsonian Astrophysical Observatory, National Bureau of Economic Research, Broad Institute, Lowell Center for Space Science & Technology, National Emerging Infectious Diseases Laboratories

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account