PrincipalMechanicalEngineer

PRINCIPAL MECHANICAL ENGINEER – OSFP MODULE DESIGN About Lumilens   At Lumilens, we are building the critical photonics infrastructure that powers tomorrow’s AI supercomputing. From chip-to-chip optical interconnects to scalable photonic engines, Lumilens is unlocking a new era of computing—faster, cooler, and massively more efficient. Join our experienced team to help shape the next generation of high-speed optical connectivity.   POSITION SUMMARY We are seeking an experienced Principal Mechanical Engineer to lead the architecture, design, development, and industrialization of next-generation high-speed optical transceiver modules, including 800G, 1.6T, and future pluggable platforms based on the OSFP ecosystem.   This role requires deep expertise in high-speed electro-mechanical packaging, thermal management, precision tolerance engineering, EMI/EMC compliance, materials engineering, and large-scale manufacturing/NPI execution. You will work cross-functionally with optics, signal integrity, electrical, thermal, manufacturing, reliability, and supplier teams to deliver high-performance products at hyperscale production volumes.   KEY RESPONSIBILITIES - Lead end-to-end mechanical design and development of OSFP transceiver modules and related hardware - Define module architecture, stack-up strategy, mechanical interfaces, retention mechanisms, heat spreaders, cages, and thermal paths - Design precision components using sheet metal, die castings, injection molded plastics, CNC machined parts, and TIMs - Optimize designs for thermal performance, structural integrity, EMI shielding effectiveness, manufacturability, reliability, and cost - Drive advanced thermal solutions for high-power DSP and optical engines - (Optional) Perform thermal simulations using FloTHERM, Icepak, and CFD tools - Develop cooling strategies involving heat sinks, vapor chambers, heat spreaders, liquid cooling interfaces, and advanced TIM selection - Lead reliability validation including thermal c