Senior Silicon Photonics Engineer (PIC Design)

About Rain Tree Photonics At Rain Tree Photonics, we are building next-generation optical engines for co-packaged optics (CPO) and near-packaged optics (NPO) to break the bandwidth and power bottlenecks in AI infrastructure. Our silicon photonic ICs power 200G/lane and beyond interconnects, enabling scalable, energy-efficient connectivity for AI data centers. Role Overview You will design
high-speed silicon photonic integrated circuits
operating at the limits of bandwidth and integration, and take them from
concept → tapeout → silicon validation
. This role is suitable for
strong PhD graduates through early-career engineers (0-5 years experience)
who want to work on
real, production-bound systems
, not just simulations. Roles & Responsibilities Design and optimize
silicon photonic devices and circuits
, including: o High-speed
modulators (MZI, ring, advanced structures) o
Photodetectors
and receiver building blocks o Passive components (couplers, ...