Power Integrity Engineer

Lightmatter; Mountain View (CA); Hybrid; USD 145,000 - 212,000; Full time

Job summary

Join a forward-thinking company at the forefront of AI data center infrastructure. As a Power Integrity Engineer, you will innovate new architectures and optimize power delivery systems, working alongside a talented team of engineers and scientists. This role offers the chance to tackle complex challenges in a hybrid work environment, contributing to groundbreaking advancements in computing technology. If you're passionate about making an impact and driving the future of computing with light, this opportunity is perfect for you.

Benefits

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

Flexible, hybrid workplace model

Equity grants (applicable to full-time employees)

Qualifications

• 3+ years of experience in power delivery and power integrity analysis for high performance CPUs.
• Proficiency in simulation and analysis tools for power integrity.

Responsibilities

• Support design and analysis of Power Delivery Networks for digital and analog SoCs.
• Conduct lab measurements to validate power integrity design.

Skills

Power Delivery Networks (PDNs)

Power integrity analysis

Simulation tools (PowerSI, PowerDC, H-Spice, ADS)

Problem-solving skills

Education

M.S. or Ph.D. in Electrical Engineering

Tools

2.5D EM solvers

Oscilloscopes

Network analyzers

Scripting languages (Skill, TCL, Python, Matlab)

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

Lightmatter is looking for a Power Integrity engineer to drive the next generation products from concept to development. As part of a cross-functional systems and packaging team—including silicon, package, and systems engineers—you will drive the definition, optimization, and completion of package and system architecture to meet the product’s power integrity requirements. This role presents a unique opportunity to innovate new package and system architectures, solving complex interaction across digital, analog, and photonics domains while achieving stringent signal and power integrity goals.

Responsibilities:

• Support the design and analysis of Power Delivery Networks (PDNs) for digital and analog SoC domains, including path from voltage regulators to on-chip decoupling capacitors.
• Assist in modeling regulator characteristics such as switching ripple and transient response to aid in component selection (controllers, passives, etc.).
• Use commercial simulation tools (e.g., 2.5D EM solvers) to extract PCB and package impedance profiles and help generate N-port models.
• Perform basic time-domain and frequency-domain simulations to evaluate supply rail behavior and identify potential issues such as voltage droop or overshoot.
• Conduct lab measurements to validate power integrity design, including use of programmable loads and oscilloscopes to capture transient response.
• Work closely with hardware designers, layout engineers, and system integrators to implement PDN design improvements and validate results.
• Participate in design reviews and contribute to documentation of analysis results, test procedures, and design recommendations.
• Help monitor and review PDN constraints during layout and provide feedback based on simulation or measurement data.
• Support senior engineers in system-level tradeoff studies and architectural evaluations related to power integrity.

Qualifications:

• M.S. or Ph.D. in Electrical Engineering or a related field.
• 3+ years of experience in power delivery and power integrity analysis for high performance CPUs and compute SoCs.
• Proficiency in using simulation and analysis tools for power integrity, including PowerSI, PowerDC, H-Spice and ADS.
• Experience with PCB design and layout considerations for power integrity, including layer stack-up assignment, power plane partitioning, capacitor selection and placement, and microvia/PTH design.
• Strong problem-solving and debugging skills for power integrity-related issues.

Preferred Qualifications:

• Working knowledge of different 2D/2.5D/3D packaging technologies and associated PDN challenges.
• Familiarity in using lab equipment for signal measurement and characterization, such as oscilloscopes and network analyzers.
• Proficiency in scripting languages such as Skill, TCL, Python, and Matlab for automation of design and modeling flows and post-processing results

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

Salary Range

$145,000 - $212,000 USD

• 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
• Flexible, hybrid workplace model
• Equity grants (applicable to full-time employees)

Benefits eligibility may vary depending on your employment status. 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.

Apply for this job

*

indicates a required field

First Name *

Last Name *

Email *

Phone

Resume/CV

Enter manually

Accepted file types: pdf, doc, docx, txt, rtf

Enter manually

Accepted file types: pdf, doc, docx, txt, rtf

LinkedIn Profile

Website

Are you available to work at one of our office locations at least three times per week? * Select...

Lightmatter follows a hybrid work model

Do you currently require, or will you require in the future, any immigration-related support, visa transfer or visa sponsorship (e.g., J-1, F-1 CPT, STEM OPT, H-1B, E-3, O-1, TN, visa transfer) to work at Lightmatter? * Select...

If offered employment at Lightmatter, would you be legally eligible to begin work immediately? * Select...

Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey.Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiringprocess or thereafter. Any information that you do provide will be recorded and maintained in aconfidential file.

As set forth in Lightmatter’s Equal Employment Opportunity policy,we do not discriminate on the basis of any protected group status under any applicable law.

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection.As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measurethe effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categoriesis as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.

Select...

Voluntary Self-Identification of Disability

Form CC-305

Page 1 of 1

OMB Control Number 1250-0005

Expires 04/30/2026

Voluntary Self-Identification of Disability

Form CC-305 Page 1 of 1 OMB Control Number 1250-0005 Expires 04/30/2026
Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp .

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

• Alcohol or other substance use disorder (not currently using drugs illegally)
• Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
• Blind or low vision
• Cancer (past or present)
• Cardiovascular or heart disease
• Celiac disease
• Cerebral palsy
• Deaf or serious difficulty hearing
• Diabetes
• Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
• Epilepsy or other seizure disorder
• Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
• Intellectual or developmental disability
• Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
• Missing limbs or partially missing limbs
• Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
• Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
• Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
• Partial or complete paralysis (any cause)
• Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
• Short stature (dwarfism)
• Traumatic brain injury

Disability Status Select...

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.