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 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