Jobs / United States / Lightmatter INC
Power Integrity Engineer
Lightmatter INC · 🇺🇸 Mountain View, CA
Sponsorship verdict
Sponsorship possible
One solid signal, not two — worth applying, and worth asking about sponsorship early.
- Employer is on a government sponsor recordThe US Department of Labor certified 21 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest May 2026) — the step every H-1B hire needs first. USCIS also records 1 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
- The posting doesn’t mention sponsorshipSilence isn’t a refusal — ask the recruiter before investing much time.
- No salary bar for this routeH-1B has no fixed salary bar: the employer must pay at least the prevailing wage for the role and area. Cap-subject employers enter a lottery weighted by wage level. Source: https://www.federalregister.gov/documents/2025/12/29/2025-23853/weighted-selection-process-for-registrants-and-petitioners-seeking-to-file-cap-subject-h-1b, rules effective 2026-02-27.
- What Lightmatter INC paid sponsored hires in similar roles4 certified filings for “Sr. Photonics Test Engineer” (Robotics Engineers) in CA: $167k–$215k, median $177k. Most were filed at wage level III (75%) — 3 lottery entries, ≈46% projected selection odds for cap-subject employers. Source: US Department of Labor LCA disclosure data (Oct 2025 – Jun 2026).
- Confirmed live todayWhen a source last listed this job as open.
US H-1B: cap-subject employers enter a lottery weighted by wage level — Level I gets 1 entry, Level IV gets 4 (DHS projected selection odds ≈15% at Level I to ≈61% at Level IV). Universities and non-profit research employers are cap-exempt. The $100,000 fee for new petitions from abroad is currently blocked by a court order (appeal pending).
A verdict summarises public evidence; it is not legal advice and never a guarantee — the employer and the immigration authority decide. Sign in to factor in where you can already work.
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Sponsor Radar — Lightmatter INC
The US Department of Labor certified 21 H-1B/E-3 labor condition applications for this employer between Oct 2025 and Jun 2026 (latest May 2026) — the step every H-1B hire needs first. USCIS also records 1 H-1B approvals in FY2023. Source: LCA disclosure data (US Department of Labor (OFLC)).
Past sponsorship or register membership never guarantees sponsorship for this vacancy or for you. Full Sponsor Radar for Lightmatter INC →
About the role
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. You will be part of the Signal Integrity, Power Integrity and Packaging team, tasked with influencing the package and system architecture, design, and analysis through lab bring-up to meet the product's power integrity requirements. This position offers a unique opportunity to solve complex interactions across digital, analog and photonics domains while meeting stringent 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, IDEM, H-Spice and Keysight ADS. • Experience in DC-DC converter design. • 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 de