<div class="content-intro"><p>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.</p> <p>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!</p> <p>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.</p> <p>Lightmatter is (re)inventing the future of computing with light!</p></div><p>Product Engineering builds the software that brings up, characterizes, and qualifies Lightmatter's photonic chips on real hardware — from bench-top bring-up through production test on automated test equipment (ATE). You'll write the code that drives instruments, testers, wafer probers, and lab automation to bring a chip to life and prove it works. Test software infrastructure at Lightmatter spans multiple platforms, wafer test, hardware validation, and laser/optical test, and this role often acts as the bridge between engineers working at the bench and the broader test software team.</p> <p>As a Hardware Test Automation Engineer you'll have the opportunity to work across some combination of: an internal test software framework (Java/Python-based), industry-standard ATE test method and testflow development, wafer prober integration, instrument control (optical and electrical sources, meters, sensors), embedded/firmware interfaces on the hardware side, and data pipelines from lab equipment to structured results.</p> <h3><strong>Responsibilities</strong></h3> <ul> <li>Learn the hardware you're automating well enough to make informed software decisions about it.</li> <li>Design and build test software that automates device bring-up, characterization, and production test sequences across bench and ATE environments.</li> <li>Develop and maintain test methods, test flows, and instrument control code depending on level and project while writing code and reviewing code are both daily parts of the role.</li> <li>Work directly with hardware and characterization engineers to understand their needs and translate device physics and test requirements into working, repeatable test software.</li> <li>Build and maintain data logging and results pipelines so test data is captured accurately and usable downstream (metric computation, yield analysis, production handoff).</li> <li>Debug test hardware/software integration issues, working across the device under test, the fixture, the instrument, and the test code to find root cause.</li> <li>Support test program releases to internal test cells and, at senior levels, to external test facilities.</li> <li>Communicate daily with the team on progress and blockers, and spend regular time in the lab working hands-on with hardware.</li> </ul> <h3><strong>Qualifications</strong></h3> <ul> <li>Bachelor's degree in Computer Science, Electrical Engineering or related field.</li> <li>8+ years of experience in hardware test software, ATE systems, or test architecture, ideally in semiconductor or photonics.</li> <li>Track record of owning test software architecture for a product line, including decisions on how the framework scales across projects and teams.</li> <li>Deep hands-on experience with ATE test method/test flow development and/or embedded test frameworks for hardware test automation, plus fluency with instrumentation automation (SCPI/VISA or equivalent) at a level where you can teach it to others.</li> <li>History of mentoring engineers and driving cross-functional technical decisions with hardware, characterization, and manufacturing teams.</li> <li>Can articulate, end to end, how they scoped, planned, implemented, and validated an automation project.</li> <li>Comfortable working at the hardware/software boundary — reading and reasoning about embedded software (C/C++), controls, or firmware well enough to co-develop directly with the engineers who own it.</li> </ul> <h4><strong>Preferred Qualifications</strong></h4> <ul> <li>Master's/PhD with 3+ years, of experience in hardware test software, ATE systems, or test architecture, ideally in semiconductor or photonics.</li> <li>Experience integrating ATE with wafer-level hardware (probers, handlers) is a strong plus.</li> <li>Experience with photonic test instrumentation</li> </ul><div class="content-pay-transparency"><div class="pay-input"><div class="description"><p>We offer competitive compensation. The base salary range for this role determined based on location, experience, educational background, and market data.</p></div><div class="title">Salary Range: total compensation goes beyond base salary, it also includes a new hire equity grant, annual performance-based equity, and other rewards that recognize your impact and contribution.</div><div class="pay-range"><span>$167,000</span><span class="divider">—</span><span>$227,000 USD</span></div></div></div><div class="content-conclusion"><h3>Benefits</h3> <div> <ul> <li>Comprehensive Health Care Plan (Medical, Dental & Vision)</li> <li>