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 (3 nm) 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.ResponsibilitiesImplement digital blocks in advanced tech nodes from synthesis through physical verification, using industry standard tools and flowsUnderstand and debug timing constraints, derates and margins. Review signoff STA reports and fix timing violations for all timing scenariosBuild and customize power grid and ensure power integrity goals are metUnderstand clock details and be able to customize clock implementation for functional and test clocksDebug and clean up DRC/LVSFunctional and timing ECO implementationBe willing to do manual layouts as well as willingness to learn and do silicon photonics layoutWork with EDA companies to resolve any tool issuesWrite TCL, Python, or Shell scripts to automate flow or customize existing flowsQualificationsBachelor’s in Electrical Engineering or Computer EngineeringAt least 8+ years of industry experience working as a Physical Design EngineerMust have completed blocks or top level physical design for large ASICs or mixed signal chips that taped outThorough knowledge of timing closure, LVS/DRC closureExperience in TCL and Python (or other scripting languages)Strong teamwork skills with the ability to collaborate with multiple functional teams across a variety of fieldsAbility to react to change and thrive in a fast paced environmentPreferred QualificationsMasters Electrical Engineering or Computer EngineeringHands‑on experience with Cadence toolsTape‑out experience 3 nm designsWe offer competitive compensation. The base salary range for this role is determined based on location, experience, educational background, and market data: $145,000 CAD – $163,000 CAD. Total compensation goes beyond base salary, it also includes a current hire equity grant, annual performance‑based equity, and other rewards that recognize your impact and contribution.BenefitsComprehensive Health Care Plan (Medical, Dental & Vision)Retirement Savings Matching ProgramLife Insurance (Basic, Voluntary & AD&D)Generous Time Off (Vacation, Sick & Public Holidays)Paid Family LeaveShort Term & Long Term DisabilityTraining & DevelopmentCommuter BenefitsFlexible, hybrid workplace modelEquity 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 ControlCandidates should have capacity to comply with the federally mandated requirements of U.S. export control laws.#J-18808-Ljbffr

📌 Staff Physical Design Engineer - C$145,000 - C$163,000 A Year (Toronto)
🏢 lightmatter
📍 Toronto