Principal R&D Laser EPI Design Engineer

It's fun to work in a company where people truly BELIEVE in what they're doing!

We're committed to bringing passion and customer focus to the business.

If you like wild growth and working with happy, enthusiastic over-achievers, you'll enjoy your career with us!

About Lumentum At Lumentum, we’re building the tech behind the world’s fastest networks and most advanced systems. Our optical and photonic solutions power everything from AI and cloud computing to data centers, telecom, and advanced manufacturing.

We’re a global team of innovators working where light meets technology, solving big challenges that keep the world connected and moving forward. If shaping the future of connectivity excites you, you’ll fit right in.

What You’ll Be Doing Coordinate with device designers to develop the epitaxial growth recipes needed for the devices to meet the wide range of performance requirements including output power, drive voltage, beam characteristics, wavelength, high-speed operation and reliabilityEPI design includes, but is not limited to, modeling design inputs such as layer thicknesses and compositions, doping profiles, active regions, growth conditions to outputs such as mode profiles, beam divergence and electrical resistance.

EPI designs must align with the wafer processing and device design technology with high yield

Translate designs into EPI growth recipes and interact with internal EPI growers or manage external vendors to execute the growths

For each growth campaign review all available calibration and EPI characterization data and feedback to internal or external growers or modify EPI designs as needed

Work with device designers and wafer process integration teams to launch process runs. Support NPI team to analyze all critical wafer processing, device testing and reliability data to feedback to EPI design improvements

Coordinate any special EPI related analysis to understand performance and reliability such as SIMS, TEM, EDXGenerate key intellectual property (IP) for novel ideas in device design or EPI designs

What We’re Looking For

Education:

PhD degree in optoelectronics or other relevant major with industry experience is minimum requirement

Experience:

Core Requirements:

PhD degree in optoelectronics or other relevant major with industry experience is minimum requirement

Hands-on experience with MBE or MOCVD growth of III/V semiconductor material, preferred experience with GaAs based VCSEL devices

Experience with semiconductor wafer analysis such as photoluminescence (PL), Reflectance spectrum, EPI defects and haze scans, X-Ray diffraction (XRD), SIMS, ECV profiling

Knowledge of semiconductor device physics, laser diode testing and wafer process technology

Experience with software data analysis tools (such as Excel, JMP, Minitab) and data processing (Python, Matlab)
Excellent ability to work in cross-functional teams as both a team leader and a contributor

Strong verbal and written communication skills

Preferred Qualifications

Experience with VCSEL devices

Experience with device modeling and device simulation

Strong communication skills

Perks You’ll Love Flexible time off Health and wellness benefits (physical and mental)
Tuition reimbursement and career growth supportA workplace built for you: free gym, games room, prayer room Subsidized meals, free coffee/tea Employee stock options and incentive plansA collaborative, innovative, and inclusive culture

Join a Team That’s Shaping the Future At Lumentum, we’re more than just a workplace—we’re a launchpad for creativity and innovation. We’re committed to celebrating your unique talents and helping you grow. Our guiding principles—Innovate, Engage, Deliver, Excel, and Win—aren’t just words; they’re the heart of what we do.

Let’s Build a Brighter Future…