Reliability Engineer, Lightmatter
Hardware
$142-200k
+ New hire equity grant + annual performance-based equity
Office located in Mountain View, CA
Light-powered AI computing
Be an early applicant
Light-powered AI computing
201-500 employees
Be an early applicant
$142-200k
+ New hire equity grant + annual performance-based equity
Office located in Mountain View, CA
201-500 employees
Company mission
To build an engine that will power discoveries, drive progress, and redefine what computers and human beings are capable of.
Role
Who you are
- Bachelor's degree in Electrical Engineering, Computer Engineering or a similar field
- 5+ years of industry experience working as a Reliability Engineer within the semiconductor and/or photonics industry
- Understanding of device and package reliability testing methodologies, including HTOL, HAST, TDDB, HTHH, TC etc
- Hands-on experience with failure analysis tools and techniques such as SEM, TEM, FIB, and EMMI etc
- Knowledge of device physics, reliability and failure mechanism in Serdes/digital/mixed signal IC’s
- Good understanding of packaging failure mechanisms and risks on TSV, solder joints, warpage, metal migrations etc
- Familiarity with reliability modeling tools and statistical analysis (e.g., Weibull analysis, Minitab, JMP)
- Candidates should have capacity to comply with the federally mandated requirements of U.S. export control laws
Desirable
- Preferably experienced in semiconductor or photonics device/module testing
- Experience with advanced packaging technologies such as flip-chip, wafer-level packaging, or 3D integration
- Good statistical data analysis skills to analyze pre vs post reliability data
- Excellent communication and presentation skills, with the ability to convey complex reliability concepts to diverse audiences
- PhD in Electrical Engineering, Computer Engineering or a similar field , working as a Reliability Engineer for at least 1 year
What the job involves
- In this role you will be responsible for designing, executing, and analyzing reliability tests to verify product performance, durability, and compliance with standards. You will enable our products to meet or exceed reliability requirements throughout their lifecycle by developing robust test protocols, analyzing failures, and working with cross-functional teams to drive improvements in design and manufacturing processes
- Develop reliability test plans based on product requirements, industry standards, and customer expectations
- Execute reliability qualification testing for our highly integrated photonics-based AI platform and our photonics chiplet communication fabric products
- Conduct Failure Modes and Effects Analysis (FMEA) to identify and mitigate potential reliability risks in device design and manufacturing
- Perform detailed root cause analysis of device failures, and collaborate with cross-functional teams to resolve reliability issues, refine product designs, and improve process robustness
- Establish internal reliability guidelines and standards to meet customer requirements and industry benchmarks
- Utilize statistical analysis tools to model reliability performance and predict device lifetimes under field conditions
- Prepare and present detailed technical reports, including reliability test plans, results, and risk assessments, to internal and external stakeholders
Our take
Neural networks and CPUs are vital to AI solutions, but manufacturers have largely failed to maintain innovation in recent years. Lightmatter solves this problem by offering a next-generation computing platform powered by photonics (light waves).
Lightmatter offers a forward-facing platform for AI-building that acts as an alternative to traditional solutions. It works by replacing wired CPUs with a combination of photonics and new algorithms. Lightmatter's solution is not only faster, but it is considerably more sustainable, and it has the potential to drive the next generation of AI development.
As of early 2026, Lightmatter had raised $850 million across six funding rounds and grown to a staggering valuation of $4.4 billion. This showcases the growing demand for faster, more effective AI-building solutions. With products already on the market and a roadmap to tackle even more components in the years ahead, the future for Lightmatter certainly looks bright.
Steph
Company Specialist at Welcome to the Jungle
Insights
Company
Funding (last 2 of 6 rounds)
Oct 2024
$400m
SERIES D
Dec 2023
$155m
SERIES C
Total funding: $822m
Company benefits
- Commuter benefit
- Happy hour -Spend time together and build friendships
- Generous vacation policy and holidays
- 401(K)
- Opportunity to learn from your peers and teach them what you know across electronics, photonics, machine learning, and more
Company HQ
Old Mountain View, Mountain View, CA
Leadership
Nicholas Harris
(CEO & Co-Founder)Previously worked as an R&D Product Engineer at Micron Technology, and as a Postdoctoral Fellow at MIT.
Thomas Graham
(Head of ML & Co-Founder)Was an M&A Analyst at Morgan Stanley, and worked as an Agency Business Development Manager at Google.
Darius Bunandar
(Chief Scientist & Co-Founder)Worked as a Research Collaborator at Caltech, and was a PhD Candidate at MIT.
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