Lightmatter Visa Sponsorship Jobs USA
Lightmatter is a photonic computing company pushing the boundaries of AI hardware infrastructure. For visa-sponsored roles in cutting-edge semiconductor and chip design, Lightmatter sponsors H-1B visa, F-1 OPT, F-1 CPT, TN visa, and J-1 visas, making it a legitimate target for international engineers in deep tech.
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Get Access To All JobsLightmatter 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
You will be focused on validating and architecting package and system-level test strategies for high-speed I/O interfaces on Lightmatter's novel product line. In this role, you will be responsible for setting up and executing high-speed electrical characterization, driving link bring-ups, and stress-testing I/Os in system environments.
You will work closely with cross-functional teams to transition these technologies into high-volume manufacturing. We are looking for an engineer with a proven track record of testing real-world industry products. You will be part of a growing interdisciplinary team with a lot of opportunities to learn and make a big impact.
Responsibilities
- Execute high-speed serial I/O characterization and validation across multiple platforms for Lightmatter products.
- Work directly with architecture, signal integrity, and silicon design teams to understand the technology and conceptualize characterization and test techniques targeting product manufacturing.
- Architect test concepts, test platforms, and design-for-test rules, providing critical feedback during the technology concept phase.
- Set up and operate a wide range of high-speed lab equipment, including oscilloscopes, BERTs, AWGs, TDRs, and VNAs/PNAs.
- Develop Python-based test software and scripts to automate lab measurements, test execution, data analysis, and parameter extraction.
- Define and develop stress testing methodologies to identify design operating limits of serial I/Os post-system integration.
- Troubleshoot and triage complex issues with compliance test hardware, fixtures, software, and the Device Under Test (DUT).
- Work with vendors to specify and procure state-of-the-art test equipment.
Requirements
- Master's in Electrical Engineering, Computer Engineering, or a related field.
- 6+ years of industry experience in transceiver, SerDes, or high-speed link test development on products.
- Extensive hands-on lab experience and familiarity with high-speed equipment, including oscilloscopes, BERTs, PPGs, VNAs, and spectrum analyzers.
- Strong familiarity with high-speed interfaces and analog building blocks (e.g., PLL, CDR, CTLE, DFE, FFE, and FEC).
- Experience in test system automation and data processing using Python.
- Strong analytical and debugging skills to identify and solve hardware and signal integrity issues during the testing process.
- Ability to convey complex technical concepts to both technical and non-technical stakeholders.
Preferred Qualifications
- Hands-on experience in the characterization and testing of silicon photonics components and circuits (e.g., tunable lasers, power meters, polarization synthesizers, OBR/OVA).
- Understanding of Silicon Photonics components and optical testing methodologies.
- Deep knowledge of system-level SerDes design and channel analysis, including understanding insertion loss, return loss, crosstalk, and link training algorithms.
- Knowledge of industry specifications such as IEEE 802.3, OIF, PCIe, or USB4.
- Ph.D. with 2+ years of relevant industry experience.
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.
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
You will be focused on validating and architecting package and system-level test strategies for high-speed I/O interfaces on Lightmatter's novel product line. In this role, you will be responsible for setting up and executing high-speed electrical characterization, driving link bring-ups, and stress-testing I/Os in system environments.
You will work closely with cross-functional teams to transition these technologies into high-volume manufacturing. We are looking for an engineer with a proven track record of testing real-world industry products. You will be part of a growing interdisciplinary team with a lot of opportunities to learn and make a big impact.
Responsibilities
- Execute high-speed serial I/O characterization and validation across multiple platforms for Lightmatter products.
- Work directly with architecture, signal integrity, and silicon design teams to understand the technology and conceptualize characterization and test techniques targeting product manufacturing.
- Architect test concepts, test platforms, and design-for-test rules, providing critical feedback during the technology concept phase.
- Set up and operate a wide range of high-speed lab equipment, including oscilloscopes, BERTs, AWGs, TDRs, and VNAs/PNAs.
- Develop Python-based test software and scripts to automate lab measurements, test execution, data analysis, and parameter extraction.
- Define and develop stress testing methodologies to identify design operating limits of serial I/Os post-system integration.
- Troubleshoot and triage complex issues with compliance test hardware, fixtures, software, and the Device Under Test (DUT).
- Work with vendors to specify and procure state-of-the-art test equipment.
Requirements
- Master's in Electrical Engineering, Computer Engineering, or a related field.
- 6+ years of industry experience in transceiver, SerDes, or high-speed link test development on products.
- Extensive hands-on lab experience and familiarity with high-speed equipment, including oscilloscopes, BERTs, PPGs, VNAs, and spectrum analyzers.
- Strong familiarity with high-speed interfaces and analog building blocks (e.g., PLL, CDR, CTLE, DFE, FFE, and FEC).
- Experience in test system automation and data processing using Python.
- Strong analytical and debugging skills to identify and solve hardware and signal integrity issues during the testing process.
- Ability to convey complex technical concepts to both technical and non-technical stakeholders.
Preferred Qualifications
- Hands-on experience in the characterization and testing of silicon photonics components and circuits (e.g., tunable lasers, power meters, polarization synthesizers, OBR/OVA).
- Understanding of Silicon Photonics components and optical testing methodologies.
- Deep knowledge of system-level SerDes design and channel analysis, including understanding insertion loss, return loss, crosstalk, and link training algorithms.
- Knowledge of industry specifications such as IEEE 802.3, OIF, PCIe, or USB4.
- Ph.D. with 2+ years of relevant industry experience.
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.
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Get Access To All JobsTips for Finding Lightmatter Visa Sponsorship Jobs USA
Target roles that align with photonic and AI hardware
Lightmatter builds optical computing systems for AI workloads. Engineers with backgrounds in photonics, chip architecture, or semiconductor design are the most natural fit for sponsored roles, focus your application on these technical specializations.
Understand that H-1B sponsorship is the primary path
Lightmatter's sponsorship activity centers on H-1B visas. If you're already in the U.S. on F-1 OPT or CPT, use that time strategically to get your foot in the door before H-1B lottery season.
Apply early relative to H-1B lottery deadlines
H-1B registrations open in March each year. Targeting Lightmatter well before that window, ideally six to nine months ahead, gives hiring managers time to evaluate and commit to sponsoring you through the lottery.
Highlight deep technical skills, not just software experience
Lightmatter operates in Electronics and Hardware, not general software. Applications that demonstrate hands-on experience with optical systems, VLSI design, or hardware-software co-design will stand out from software-only candidates.
Use OPT and CPT as a bridging strategy
Lightmatter sponsors F-1 OPT and CPT, which can be a practical entry point before pursuing H-1B. An internship or early full-time role on OPT builds internal trust and strengthens your case for long-term sponsorship.
Filter for verified sponsors when searching for open roles
Not every job posting reflects real sponsorship willingness. Migrate Mate surfaces verified sponsors so you can filter by actual sponsorship history, search for Lightmatter roles there to find positions backed by confirmed visa support.
Frequently Asked Questions
Does Lightmatter sponsor H-1B visas?
Yes, Lightmatter sponsors H-1B visas. It is an active sponsor in the Electronics and Hardware space, with H-1B being its primary visa pathway for international hires. Roles in photonic computing, hardware engineering, and AI infrastructure are the most common areas where H-1B sponsorship occurs. If you're targeting Lightmatter, the H-1B is the most likely long-term sponsorship route available to you.
Which visa types does Lightmatter sponsor?
Lightmatter sponsors H-1B, F-1 OPT, F-1 CPT, TN visa, and J-1 visas. This range means international candidates at multiple stages of their U.S. work authorization journey can find a pathway in. F-1 students can enter through OPT or CPT, while professionals from Canada or Mexico may qualify under TN status in relevant engineering or scientific roles.
What types of roles at Lightmatter are most likely to receive visa sponsorship?
Sponsorship at Lightmatter is concentrated in highly technical roles, think hardware engineers, photonics researchers, chip designers, and AI systems engineers. The company's core product is optical computing hardware for AI, so roles that require specialized knowledge in semiconductors, integrated photonics, or computer architecture are where international talent is most actively recruited and sponsored.
How do I time my application to Lightmatter around the H-1B process?
The H-1B lottery registration window opens each March for an October 1 start date. To be sponsored in that cycle, you'd ideally secure an offer by late 2025 or early 2026. Starting your outreach to Lightmatter six to nine months before the registration window gives the company enough lead time to commit to sponsorship and prepare your petition.
How do I find open sponsored jobs at Lightmatter?
The most reliable approach is to use Migrate Mate, which aggregates roles from verified visa sponsors and lets you filter specifically by company and visa type. This removes the guesswork of whether a listing actually comes with sponsorship support. Once you identify a relevant opening at Lightmatter, tailor your application to highlight the deep hardware expertise the company consistently looks for in sponsored hires.