Lightmatter · 2 weeks ago
Staff Physical Design Timing Engineer (STA)
Mountain View, CA
Full-time
Hybrid
Lead/Staff
$196K/yr - $215K/yr
8+ years expLightmatter is leading the revolution in AI data center infrastructure, enabling the next giant leaps in human progress. The company is hiring a Physical Design Timing Engineer to drive backend digital execution for photonics-based interconnect solutions, focusing on timing constraints development and STA closure on advanced CMOS technologies.
AI InfrastructureArtificial Intelligence (AI)Data CenterMachine LearningSemiconductorSoftware
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
Qualification
Required
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
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
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)
Company
Lightmatter
Lightmatter develops photonic chips that enable data processing and communication using light instead of electricity.
201-500 employees
H1B Sponsorship
Lightmatter has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (21)
2024 (12)
2023 (5)
2022 (4)
2021 (4)
2020 (4)
Funding
Current Stage
Late StageTotal Funding
$822MKey Investors
T. Rowe PriceViking Global InvestorsGoogle Ventures
2024-10-16Series D· $400M
2023-12-19Series C· $155M
2023-05-31Series C· $154M
Leadership Team
Nicholas Harris
Founder, CEO
B
Bob Turner
Sr. VP Sales & Solution Architecture
Recent News
2025-11-23
2025-10-09
Company data provided by crunchbase