Signal Integrity Engineer –1.6T OSFP Board Design

Bengaluru, Karnataka, India / Onsite

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.

We’re a well-funded startup backed by Mayfield and led by veterans who’ve built And scaled some of the most transformative technologies in the industry. This isn’t incremental innovation, it’s a ground-floor chance to rethink the optical layer from the silicon up. You’ll work alongside a team of world-class engineers solving some ofthe hardest challenges in optics, systems, and scale. Every line of code, every design decision, every breakthrough you help deliver will shape the infrastructure of tomorrow.

If you're looking for mission, momentum, and the chance to make an outsized impact jump on the rocket ship. We’re just getting started.

Role Overview





We are seeking a senior SI Engineer with 15–20 years of experience to lead board‑level high‑speed electrical design and validation for 1.6T DR8 (200G/lane) OSFP optical modules, including technical leadership across multiple projects and mentoring of the SI team.

Key Responsibilities:

Own SI/PI architecture and strategy for 1.6T DR8 OSFP modules: define channel budgets, interface architectures, and design rules for 200G PAM4 lanes from ASIC/DSP to front‑panel.
Lead pre‑ and post‑layout SI/PI simulations and reviews (S‑parameters, eye/PAM4 analysis, COM, crosstalk, jitter, PDN impedance) and sign‑off multi‑lane channels on dense module PCBs.
Define PCB stack‑ups, materials (e.g., ultra‑low‑loss laminates), via and breakout strategies, connector selections, and routing guidelines to meet performance, cost, and manufacturability targets.
Drive cross‑functional technical decisions with hardware, optics, mechanical, FW, and test teams, balancing

📌 Senior Signal Integrity Engineer (Bengaluru)
🏢 Lumilens
📍 Bengaluru