Skip to content
CV Rocket
Get started
How it worksThe enginePricingBlogContactSign in

Open nowPosted 2 hours agoWe saw it 59 min after it went up

Hardware Test Engineering, Intern (Summer 2027)

Lightmatter67 open roles

Pay
$43 – $47 an hour
Where
Mountain View, CA
Get the CV for this job

From $25 per CV, paid once. No subscription.

Your applicationOpen nowHardware Test Engineering, Intern (Summer 2027)Lightmatter · Mountain View, CA

  1. YouYes, apply to this one.

  2. CV RocketCV written for this posting.

  3. 25 readersRecruiter, hiring manager, skeptic. Round after round.

  4. CV RocketApplied on Lightmatter's own form.

The reply lands in your private mailbox

3×more interviews than doing it yourself with ChatGPT.

The clock on this job

Early applications get read.

14.0% of postings close within 7 days. Measured by our own scanner across the market. Lightmatter postings stay open a median of 49 days.

Share of postings closed within
  1. 2.3%1 day
  2. 4.7%3 days
  3. 14.0%7 days
  4. 22.5%14 days
  5. 38.3%30 days
  6. 59.0%60 days
This job: posted 2 hours ago

Lightmatter median: 49 days open

The posting

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 job

Are you ready to do meaningful internship work on technology that is changing how AI systems are built? The System Level Test team owns the final at-speed test of our silicon photonics products. These are cutting-edge high-speed optical interconnects built to move data between the processors that power AI datacenters, where copper is running out of reach and light is taking over. We build the test methods, the automation, and the data behind the pass vs fail decision. This summer's project is a hands-on optical characterization and correlation study aimed at improving how our products are tested in production. You will work on real optical hardware in the lab, build the measurement automation, generate the data, and write the recommendation that decides whether the approach moves forward. The result will directly influence how our next products are tested.

Responsibilities:

  • Characterize a set of silicon photonics units on bench optical instrumentation, measuring output power, modulation amplitude, extinction ratio, and wavelength.
  • Build automation to run measurements, control the lab setup, and log results in a consistent, reusable data format.
  • Correlate unit measurements against a calibrated laboratory reference and quantify per-unit offsets and population spread.
  • Measure unit stability across time, temperature, and repeated re-insertion, and analyze repeatability and drift.
  • Deliver a feasibility and gap assessment with a clear recommendation, including the calibration and maintenance scheme needed for production deployment.

Requirements:

  • Currently enrolled in a Bachelor's program in Electrical Engineering, Physics, Optical Engineering, or a related field.
  • Coursework or project experience in at least one of: integrated circuit design, device or circuit characterization, or electrical or optical testing.
  • Hands-on experience with standard lab equipment such as oscilloscopes, multimeters, power supplies, or optical power meters, from coursework, research, or a prior internship.
  • Programming experience in Python or a similar language, including reading and plotting measurement data.

Preferred Qualifications

  • Research, lab, or prior internship experience in photonics or semiconductors.
  • Experience automating lab instruments (PyVISA, SCPI, or similar).
  • Familiarity with basic statistics: mean, standard deviation, repeatability, and gauge or measurement uncertainty.
  • Publications, projects, or open-source contributions related to the role.

Our internship hourly rates are a standard pay determined based on the position and your location, year in school, degree, and experience.

Hourly Rate in USD

$43—$47 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.

From $25, paid onceGet the CV for this job

What happens when you press

One press. We do the rest.

  1. A CV for this posting

    Written against Lightmatter's own wording, from every piece of relevant proof in your profile.

  2. 25 readers review it

    Recruiter, hiring manager, skeptic and more read every draft, round after round. You get the best round.

    The review screen in CV Rocket: how each CV was read, round by round.

  3. We apply on Lightmatter's form

    Our application engine gets through the hardest forms there are. Where a question needs you, AI suggests the best answer. Don't want us applying from our IP addresses? Use our Chrome extension: we apply straight from your own browser.

    An application in CV Rocket: every answer filled in on the employer's form.

  4. Every reply, sorted

    Lightmatter's answer lands in your private mailbox, and we classify it on arrival: interview, question, rejection.

    The CV Rocket inbox: each employer reply classified as an interview, an action or a rejection.

  5. Reply with AI

    AI helps you write the email, checks it and sends it. We show you whether the recruiter read it.

  6. The interview in your calendar

    Full integration with your calendar. The invitation goes straight in.

    An interview invitation in the CV Rocket inbox, added to the candidate's calendar.
Get the CV for this job

From $25 per CV, paid once. No subscription.

Why it works

3×

more interviews than doing it yourself with ChatGPT.

ChatGPT writes a CV and never learns what happened to it. We see every reply. For each CV we know:

  • How it was written, and how the review scored it
  • When we applied, and how long after the posting went up
  • Which posting, which company, which city
  • Who got the interview, and who heard nothing

That is how we know which CVs get called.

Get the CV for this job

From $25 per CV, paid once. No subscription.

The numbers game

More applications. More interviews.

Every application goes out with its own CV, written for that posting and paid once. Send enough of them and the law of large numbers finds you the job.

Get the CV for this job
By hand5–10
With CV Rocket100
applications a day

Nearby

Live postings like this one

Same employer first, then the same role elsewhere.

Before you press

Straight answers

Get the CV for this job

From $25 per CV, paid once. No subscription.

What if my background isn't good enough?

We make the most of the background you have. The CV uses every piece of relevant proof your profile holds, and one of the 25 readers reads your whole profile and flags what the CV left out.

Do you really apply for me?

Yes, on the employer's own form, the hardest ones included. Where a question needs you, you answer it right there and AI suggests the best answer. Don't want us applying from our IP addresses? Use our Chrome extension: we apply straight from your own browser.

Is it a subscription?

No. You pay once per CV, from $25. Every application goes out with its own CV, written for that posting.

One job. One CV.
Paid once.

Pick the posting you want. We write for it, apply for you and catch the reply.

Get the CV for this job

From $25 per CV, paid once. No subscription.