Sr Staff Integrated Photonics Laser Systems Architect

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 hiring a Senior Staff Laser Architect to join our Laser System Architecture & Engineering (LSAE) team. In this role, you will define the architecture of Guide™, Lightmatter's laser platform that supplies multi-wavelength optical power to photonic interconnects for AI infrastructure, and of Data-SOA, the semiconductor optical amplifier that boosts modulated data signals in the optical link. You will turn product and customer requirements into these architectures. For Guide, that means laser source technology, channel count and wavelength grid, wavelength locking and control, optical power splitting and monitoring, and the optical, electrical, thermal and mechanical interfaces of the Guide module. For Data-SOA, it means gain and placement in the link, multi-wavelength amplification, and bias and gain control. You will then write the specifications that our design and systems engineering teams build against. You will be the technical owner of the trade-offs in both product architectures. You will join a small architecture team that sets the technical direction for the Guide and Data-SOA roadmaps. The architecture you define becomes the reference that future generations build on, and you will have direct influence on which laser and amplifier technologies the company commits to. You will work alongside device, circuit, packaging, controls and systems engineers who will carry your architecture into silicon and into production.

Responsibilities

Define and own the Guide laser architecture, from concept through high-volume production Define and own the Data-SOA architecture in Lightmatter’s optical links Deliver laser module architecture specifications and work closely with hardware and software teams to define functionality, interfaces, and documentation Actively collaborate with Lightmatter Passage team to drive alignment between Guide and Passage product architectures Engage in problem-solving to develop innovative high-performance laser solutions Actively collaborate across disciplines—with electronics, photonics, mechanical, and thermal engineering teams—to design systems, control algorithms, PICs, and PMICs that meet performance, power, and production requirements Engage with the engineering, product, sales, and architecture teams to define requirements for subsystems, device characterization, debug, and validation Validate architectures, models, and specifications via hands-on testing of dies, prototype assemblies, and packaged modules Collaborate with test engineers and technicians to define production test and validation protocols, as well as to analyze and debug test results Work with external vendors to ensure timely development and delivery of key processes and components Contribute to the roadmap of laser development, improving performance, scalability, power consumption, and cost Publish and present novel ideas, and participate in premier photonics conferences