Senior Epitaxy Engineer

Plessey has a long history of innovation. Founded in 1956, we have evolved from one of Europe’s earliest semiconductor pioneers into the world’s most advanced Micro

LED specialist. Over the decades, Plessey has built a first class, fully integrated platform designing, manufacturing, and engineering next-generation display technologies entirely in-house. This end to end capability, combined with our strong IP portfolio, uniquely positions us to lead the scaling of Micro

LEDs from lab innovation to high-volume production.

Our future is even brighter. We believe Micro

LEDs will define the next era of technology—powering ultra-efficient AR/VR displays, driving optical processors that make AI faster and more sustainable, and enabling devices yet to be imagined. With our unique expertise and talented team, we are positioned to lead this transformation.

It’s an exciting time to join us:
Plessey has recently been acquired by Haylo Labs
, accelerating our growth and opening new opportunities.

• Commitment
• Care

Located at our state‑of‑the‑art fabrication facility in Plymouth.

An exciting opportunity to contribute to the epitaxial growth and process development of III–V arsenide and phosphide materials (e.g., GaAs, InP, GaAsP, In Ga As P). This role will be involved in the growth recipe development, material quality, and process stability, and works closely with device and manufacturing teams to support advanced semiconductor products. This role offers the opportunity to work in a small, highly skilled team, driving the development of state-of-the‑art technology platforms.

You will directly contribute to the technology development.

• Growth of III–V As/P materials using MOCVD.
• Develop, optimise, and maintain growth recipes for thickness, composition, doping, and uniformity.
• Design and grow complex heterostructures (e.g., quantum wells, superlattices).
• Troubleshoot growth‑related issues including defects, surface morphology, and repeatability.
• Actively identify and implement opportunities for innovation and continuous improvement.
• Consistently deliver high‑quality results while balancing development and production demands.

• MS or PhD in Materials Science, Electrical Engineering, Physics, or related field.
• Strong hands‑on experience with III–V As/P epitaxial growth.
• Expertise in GaAs‑, InP‑, GaAsP‑, and In Ga As P‑based materials.
• Experience with MOCVD.
• Hands‑on experience with Aixtron or Veeco tools.

• Experience with in Photonics applications and/or Micro
  
  LED.