Staff /Sr Staff Laser Module & Systems Characterization Engineer

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 looking for a Laser Characterization Engineer to join our Laser team. You will be the hands-on technical owner for bring-up, characterization, and validation of Lightmatter's laser modules and photonic systems — taking products from first-light through manufacturing qualification and production hand-off.

You will work closely with controls engineers, photonics engineers, and the production team to translate module performance specifications into reproducible, manufacturable results. This is an individual-contributor role with direct ownership of test plan development, characterization, bring-up and validation execution , and the data that drives module specifications. This role requires strong laboratory experience in integrated photonics and fiber optics, as well as expertise in photonics and electronics testing, and data analysis. Analytical skills, problem-solving, and the ability to clearly communicate and document your findings are essential.

Responsibilities

• Lead optical performance optimization (OPO) and initial bring-up for Guide ™ Laser modules;

Department: Photonics Engineering