ARCHIVED
This job listing has been archived and is no longer accepting applications.
MisuJob - AI Job Search Platform MisuJob

Principal Field Application Engineer

Lightmatter

Mountain View, CA; Remote - USA (Mountain View, CA, Remote - USA) Remote permanent

Posted: December 17, 2025

Interested in this position?

Create a free account to apply with AI-powered matching

Quick Summary

We are seeking a Principal Field Application Engineer to join our team in Mountain View, CA, USA.

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!

We are now looking for an outstanding Field Application Engineer - High-speed I/O Specialist to join our team. The role’s primary responsibility is to work collaboratively with customers in architecting the next generation of devices enabled by Lightmatter’s photonic interconnect technology Passage. In this role, you will work closely with Tier 1 Semiconductor companies that are defining the next generation of silicon in the data center. You will be working cross functionally within Lightmatter as you define an optimal technical solution. Additionally, you will be collaborating with customers who are domain experts in high-speed serial links (SerDes) and protocols. You should be comfortable supporting deep technical discussions focused on high-speed serial I/O design. Excellent interpersonal skills and the ability to work independently are essential to being successful in the role.

Responsibilities

• Provide the full technical support of the customer HSIO design, including the early technical assessment, design scheme discussion, hardware design review, hardware debug support and other critical trouble shootings

• Develop and deliver technical proposals to customers, based on customer’s technical requirements and system architecture

• Work as the field expert on HSIO area, to provide the in-depth training and guidance of the HSIO design to the FAE team, to create and share the related technical articles and reference designs

• Work collaboratively with Lightmatter Engineering in supporting customer design wins and communicating progress updates to customer engineering leads

Requirements

• BS or MS in Engineering, Mathematics, Physics, or Computer Science (or equivalent experience).

• 10+ years of work related experience in a high-tech electronics industry with high-speed serial I/O design, including transceiver architecture, CDR, DFE or other

• In-depth knowledge of the signal integrity, power integrity simulation and the related hardware design. Be familiar with the SI/PI EDA simulation tools and models, eg. Keysight ADS.

• Customer facing skill-set and background as well as the ability to communicate effectively with customers

• Action-oriented with strong analytical and problem-solving skills

• Previous experience developing and delivering technical presentations to both executive management and cross-functional engineering teams and external clients

• Built trusted working relationships across teams, improving coordination and execution speed

Preferred Qualifications

• Familiar with the digital signal processing theory and the related tools, like Matlab Simulink.

• Experience working with silicon photonics, and/or optical transceivers

• Analog signal and mixed signal design, ADC, DAC design experience

• C, C++ and other software experience

We offer competitive compensation. On target earnings range is listed below. The final compensation will be determined based on location, experience, educational background, and market data.

Sales Compensation
$250,000—$290,000 USD

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.

Why Apply Through MisuJob?

AI-Powered Job Matching: MisuJob uses advanced artificial intelligence to analyze your skills, experience, and career goals. Our matching algorithm compares your profile against thousands of job requirements to find positions where you have the highest chance of success. This saves you hours of manual job searching and ensures you only see relevant opportunities.

One-Click Applications: Once you create your profile, applying to jobs is effortless. Your resume and cover letter are automatically tailored to highlight the most relevant experience for each position. You can apply to multiple jobs in minutes, not hours.

Career Intelligence: Beyond job matching, MisuJob provides valuable career insights. See how your skills compare to market demands, identify skill gaps to address, and understand salary benchmarks for your experience level. Make data-driven decisions about your career path.

Frequently Asked Questions

How do I apply for this position?

Click the "Register to Apply" button above to create a free MisuJob account. Once registered, you can apply with one click and track your application status in your dashboard.

Is MisuJob free for job seekers?

Yes, MisuJob is completely free for job seekers. Create your profile, get matched with jobs, and apply without any cost. We help you find your dream job without any hidden fees.

How does AI matching work?

Our AI analyzes your resume, skills, and experience to understand your professional profile. It then compares this against job requirements using natural language processing to calculate a match percentage. Higher matches mean better fit for the role.

Can I apply to jobs in other countries?

Absolutely. MisuJob features jobs from companies worldwide, including remote positions. Filter by location or look for remote opportunities to find jobs that match your preferences.

Ready to Apply?

Join thousands of job seekers using MisuJob's AI to find and apply to their dream jobs automatically.

Register to Apply