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 current era of computing—faster, cooler, and massively more effective. 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 cycli

📌 Principal Mechanical Engineer Bengaluru
🏢 Lumilens
📍 Bengaluru