Characterization Engineer – Laser Diode & LED Tech

Valid8 Financial, Inc.; Sunnyvale (CA); Hybrid; USD 110,000 - 140,000; Full time

Benefits offered by this job

Paid Time Off and Holidays

401k Retirement Savings Plan

Flexible Spending Accounts

Employee Assistance Program

Life/AD&D Insurance

Job summary

Luminus is a fast-growing high-tech company focused on high-power LED and laser diode products. We seek a self-motivated Characterization Engineer to run optical/electrical tests, assess quality, and support senior engineers in laser diode and LED design.

Role is primarily located in Sunnyvale, CA. You will plan tests, set up benches, analyze data, and communicate results through reports and cross-functional collaboration.

Qualifications

• MS or PhD in Physics, Applied Physics, Electrical Engineering, Optical Engineering, or Photonics.
• 2–5 years of optics/photonics experience.
• Solid understanding of semiconductor device physics and optoelectronics.
• Hands-on lab experience characterizing laser diodes.
• Excellent data analysis with strong attention to detail.
• Proficiency in Python or JMP for data automation.
• Strong verbal and written communication skills.

Responsibilities

• Plan and coordinate product testing to describe performance of Laser Diodes and LED products.
• Test packaged chips for optical power, wavelength, beam shape, voltage, and thermal traits.
• Set up optical/electrical test benches and develop new characterization tools.
• Write clear technical reports and communicate results; advise on performance and design.

Skills

Data analysis

Lab skills

Verbal communication

Written communication

Independent / multitask

Education

MS/PhD in Physics/Applied Physics/EE/OE/Photonic

Tools

Python

JMP

Job description

Luminus is a fast-growing high-tech company focused on high-power LED and laser diode products. We seek a self-motivated Characterization Engineer to run optical/electrical tests, assess quality, and support senior engineers in laser diode and LED design.

Role is primarily located in Sunnyvale, CA. You will plan tests, set up benches, analyze data, and communicate results through reports and cross-functional collaboration.