Principal Engineer, Mechanical

lumentum· Lumentum Communication Technology (Shenzhen) Co. Ltd. Wuhan Branch
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📍 China - WuhanFull time

About this role

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!

We are seeking a highly skilled and motivated Principle Mechanical Engineer to lead the mechanical design and assembly process development for our next-generation 2.4T optical transceiver modules. The successful candidate will play a key role in translating system requirements into robust mechanical solutions that ensure superior performance, manufacturability, and reliability.

Key Responsibilities:

  • Lead the mechanical design of 2.4T optical modules, including housing, heat dissipation, optics alignment structures, and PCB integration.

  • Develop and optimize assembly processes for high-volume manufacturing, covering precision alignment, bonding, soldering, and sealing.

  • Conduct mechanical tolerance analysis, thermal analysis, and reliability assessment to ensure design robustness.

  • Work closely with electrical, optical, and manufacturing teams to ensure cross-functional design compatibility and smooth product ramp-up.

  • Collaborate with suppliers and CM partners to define mechanical specifications, tooling, and assembly fixtures.

  • Support design reviews, failure analysis, and continuous improvement of product yield and manufacturability.

Qualifications:

  • Bachelor’s or Master’s degree in Mechanical Engineering or related field.

  • 3+ years of experience in mechanical design and process development for optical, communication, or precision electronic products.

  • Proficient in 3D CAD tools (e.g., SolidWorks) and GD&T.

  • Strong understanding of thermal design, tolerance stack-up, and high-precision assembly.

  • Excellent communication, leadership, and cross-functional collaboration skills.

We are an equal opportunity employer and value diversity at our company.

We do not discriminate on the basis of race, religion, color, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status.

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment.

Please contact us to request accommodation.

Frequently Asked Questions

Is the salary disclosed for the Principal Engineer, Mechanical position at lumentum?
The salary for this Principal Engineer, Mechanical role at lumentum is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Principal Engineer, Mechanical position at lumentum located?
This Principal Engineer, Mechanical role at lumentum is based in China - Wuhan. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Principal Engineer, Mechanical role at lumentum full-time or part-time?
This is listed as a Full time position. It is posted as a Principal Engineer, Mechanical role in the Lumentum Communication Technology (Shenzhen) Co. Ltd. Wuhan Branch department at lumentum.
Which team or department does the Principal Engineer, Mechanical at lumentum belong to?
This Principal Engineer, Mechanical position is part of the Lumentum Communication Technology (Shenzhen) Co. Ltd. Wuhan Branch department at lumentum. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Principal Engineer, Mechanical position at lumentum?
Click the "Apply Now" button on this page. You will be redirected to lumentum's official application portal hosted on workday where you can submit your application directly.
When was the Principal Engineer, Mechanical job at lumentum posted?
This Principal Engineer, Mechanical position at lumentum was posted on Sep 2, 2026. Apply as soon as possible — early applications are often reviewed first.
Principal Engineer, Mechanical
lumentum
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You'll be redirected to lumentum's official application page on Workday.