W

Western Digital

Makes hard drives for cloud and AI data centers

Principal R&D Engineer - Optical Design & Computational Photonics

Hardware EngineeringConfirmed live in the last 24 hours
Full-timeUlm, GermanyNo salary listedRemote

About the Job

Requirements

  • A PhD or equivalent experience in Physics, Photonics, Electrical Engineering, Applied Mathematics, or a related field is required.
  • At least 8 years of experience in optical design, computational photonics, or advanced device simulation is required.
  • A strong background in optical simulation and numerical modeling is required.
  • Experience with electromagnetic, optical, thermal, or multiphysics simulation tools is required.
  • Strong programming capability in Python, MATLAB, or scientific computing environments is required.
  • The ability to connect theoretical modeling with experimental validation and engineering constraints is required.
  • Strong technical leadership and communication skills are required.

Responsibilities

  • Lead advanced optical and multiphysics simulation activities for next-generation photonic systems.
  • Develop inverse-design and optimization methodologies for complex optical structures.
  • Build scalable computational frameworks spanning optics, thermal, and electrical domains.
  • Drive architecture-level tradeoff studies and system-level optical design decisions.
  • Collaborate with characterization teams to correlate simulations with experimental measurements.
  • Support co-development between devices, packaging, thermal systems, and photonic integration platforms.
  • Develop reduced-order analytical models alongside full numerical simulation workflows.
  • Mentor engineers and provide technical leadership across optical design and simulation activities.
  • Help define future AI-assisted computational photonics workflows and design infrastructure.

Desired Qualifications

  • Experience with inverse design or optimization algorithms.
  • Experience with semiconductor or integrated photonic devices.
  • Strong multiphysics modeling capability.
  • AI/ML-assisted simulation or optimization experience.
  • Experience bridging device-level and system-level optical design.
  • Demonstrated ability to solve difficult first-principles engineering problems.

About the Company

Western Digital

Makes hard drives for cloud and AI data centers

Western Digital, which goes by WD, designs and makes hard disk drives, mostly the high-capacity models that cloud and AI data centers use to store huge amounts of data cheaply. In 2013, its HGST unit shipped the first helium-filled hard drives, which fit more disks into each drive and use less power. Its drives store data on stacks of spinning magnetic disks, and the lineup runs from Ultrastar data center drives to WD Red and WD Purple drives for home servers and security cameras. WD makes its money selling these drives to cloud companies, PC makers, and retail shoppers. Western Digital was founded in 1970 and is based in San Jose, California, and in 2025 it spun off its flash memory business as Sandisk.

Company size
10,001+
Company stage
IPO
Headquarters
San Jose, CA
Founded
1970

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