Principal Mechanical Engineer

Apply DFX principles and manufacturing best practices to deliver robust, production-ready designs

Lead or review engineering analyses including thermal management, structural integrity, vibration, shock, and materials selection

Define and oversee design verification, acceptance testing, and environmental qualification strategies

Provide technical oversight for procurement, assembly, integration, and test of prototype and production hardware

Develop tooling, fixtures, and process equipment strategies to support scalable manufacturing

Support system-level integration and testing of HEL combined systems as required

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Target Cash Bonus of 10%

Eligible for Restricted Stock Unit grants

4 weeks of Paid Time Off per year

10 paid Holidays

This role requires deep expertise in opto-mechanical design and system-level thinking, with responsibility for mechanical architecture, design trade studies, and technical execution across complex programs.

The Principal Mechanical Engineer will work closely with optical, electrical, thermal, and systems engineering leaders and will help guide mechanical design strategy for laser amplifier subsystems.

Lead mechanical and opto-mechanical architecture and design for high-power fiber laser amplifiers and directed-energy systems

Drive design trade studies addressing performance, SWaP, reliability, environmental survivability, manufacturability, and cost

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At nLIGHT, we are constantly on the cutting-edge of laser technology in a massively growing market. We are a leading provider of high-power semiconductors and fiber lasers for industrial, microfabrication, and aerospace & defense applications, to name a few. Our lasers are changing not only the way things are made, but also changing the things that can be made.

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Headquartered in Camas, Washington, nLIGHT is a publicly listed company (NASDAQ: LASR).

Position Summary

nLIGHT is seeking a Principal Mechanical Engineer to provide technical leadership in the development of high-power fiber laser amplifiers and directed-energy laser systems. This role requires deep expertise in opto-mechanical design and system-level thinking, with responsibility for mechanical architecture, design trade studies, and technical execution across complex programs. The Principal Mechanical Engineer will work closely with optical, electrical, thermal, and systems engineering leaders and will help guide mechanical design strategy for laser amplifier subsystems.