Senior Development Engineer – Photonic Devices, VCSEL Epitaxy
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Job Description
Senior Development Engineer designing and optimizing epitaxial stacks for VCSEL and photonic devices at Western Digital. Collaborating in an international R&D environment focused on semiconductor physics and device design.
Responsibilities:
- Design and simulate epitaxial layer stacks for VCSEL and other photonic device structures to meet optical, electrical, and thermal device requirements.
- Develop and refine device and epitaxy simulation models (e.g., optical cavity / mode simulations, carrier transport, thermal behavior) to support architecture decisions.
- Translate system and device requirements into epitaxial specifications (materials, layer sequences, thicknesses, doping profiles).
- Work closely with epitaxy, process, and device characterization teams to: Define experiments and DOEs. Interpret measurement and reliability data. Iterate designs based on feedback from wafer- and device‑level results.
- Contribute to device architecture and development strategies, including roadmaps for performance, reliability, and manufacturability improvements.
- Analyze and correlate simulation, epitaxial, and device performance data to identify root causes and optimization paths.
- Prepare and present technical reports, design reviews, and development status updates for internal stakeholders.
- Collaborate in a multi‑disciplinary, international R&D environment, coordinating with colleagues across different locations and time zones (with substantial overlap to EU working hours).
- Mentor junior engineers and students in topics such as semiconductor device physics, simulation methodology, and data analysis.
Requirements:
- PhD in Materials Science, Physics, Electrical Engineering, or a closely related field.
- Extensive professional experience with a strong record of sustained impact and increasing responsibility in R&D or applied academic research, ideally including collaboration with industry partners or participation in translational initiatives.
- Solid track record in semiconductor devices, preferably in photonic devices such as lasers, LEDs, or VCSELs.
- Deep understanding of semiconductor physics, including: Heterostructures and quantum wells.
- Optical cavities and resonant structures.
- Carrier transport, recombination mechanisms, and thermal effects.
- Experience with device or epitaxial stack simulations, for example: Optical mode / cavity simulations.
- Electronic band structure and carrier confinement.
- Thermal / electro‑thermal simulations.
- Strong ability to interpret experimental data (e.g., I‑V, L‑I, spectral, far‑field, lifetime/reliability data) and connect results to physical mechanisms and design choices.
- Fluent English (spoken and written), with the ability to write clear technical documentation and present complex topics to a mixed audience.
- Ability and willingness to work at least partially in EU time zones to ensure effective collaboration with European teams.
Benefits:
- Competitive salary
- Flexible working hours
- Professional development budget
- Home office setup allowance
- Global team events
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