Principal Product Engineer

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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.

Why You’ll Love This Role

We are seeking an experienced and dynamic Sr. Principal Product Engineer to lead product engineering activities within the Global Test organization of Component Business Unit. These activities spans multiple locations in the United States, United Kingdom, Thailand, Malaysia, Hong Kong, and China.

This senior technical leadership role will work closely with R&D, Test Engineering, Manufacturing, Quality, and Operations teams to develop and implement yield-improvement initiatives across product design, manufacturing processes, and test operations.

The ideal candidate will have extensive experience with high-volume optical-component production, product and test engineering, manufacturing processes, data analytics, and statistical analysis. The candidate will provide technical leadership, promote collaboration, and drive timely decisions and execution across global teams.

What You’ll Be Doing

• Lead product engineering activities for Lumentum’s high-volume optical components products in partnership with R&D, Test Engineering, Manufacturing, Quality, and Operations teams.
• Develop and execute yield-improvement strategies using NPI and production data.
• Drive improvement initiatives across product design, manufacturing processes, test methods, and operations.
• Establish product and production-test specifications, test coverage, and stage-gate criteria in collaboration with R&D and Test Engineering.
• Analyze NPI and production lots, DOE, pre and post-qualification data to evaluate yield and Cpk performance.
• Lead test-time reduction, test-coverage optimization, and failure-analysis activities.
• Support tester-to-tester correlation, customer-tester correlation, Gauge R&R, SPC, production-trend analysis, test-specification guard bands, and excursion management.
• Perform correlation studies between P-run and Q-run lots and communicate findings to key stakeholders.
• Partner with Test Engineering to identify test-system issues and support corrective actions during product bring-up.
• Lead root-cause analysis and corrective-action activities for product, process, and test-related issues.
• Support product launches, production ramps, and continuous-improvement programs.
• Prepare and present technical reports, recommendations, and action plans for stakeholder review and approval.
• Mentor engineers and provide technical guidance across global product and test engineering teams.

What We’re Looking For

Education:

Bachelor’s or Master’s degree in Electrical Engineering, Computer Science, or a related field. A master’s degree is preferred.

Core Requirements:

• Fifteen or more years of experience in product engineering, test engineering, manufacturing engineering, or a related technical field.

• Strong experience with large-scale data analytics, statistical analysis, data querying, and data manipulation. Experience with tools such as JMP, SQL, MES, etc.

• Extensive hands-on experience with high-volume optical-component manufacturing and testing.
• Proven track record in yield improvement, test-time reduction, test optimization, manufacturing-process improvement, and product ramp-up.
• Experience with DOE, Cpk, SPC, Gauge R&R, correlation analysis, and failure analysis.
• Strong problem-solving, analytical, strategic-thinking, and decision-making skills.
• Ability to influence and lead cross-functional teams without direct authority.
• Excellent written and verbal communication skills across different cultures, geographies, and organizational levels.
• Willingness to travel internationally approximately once per quarter.

Perks You’ll Love

• Flexible time off
• Health and wellness benefits (physical and mental)
• Tuition reimbursement and career growth support
• A workplace built for you: free gym, games room, prayer room
• Subsidized meals, free coffee/tea
• Employee stock options and incentive plans
• A 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 Together!

We’re committed to building an inclusive workplace where everyone feels valued and empowered. We welcome applicants from all backgrounds and provide accommodations for individuals with disabilities throughout the hiring process. Your uniqueness makes us stronger, sparks creativity, and drives our success.

Please contact us at talentacquisition@lumentum.com to request accommodation.

Join us—your future starts here!

Pay Range:

Disclaimer:

Final base salary for the successful candidate will depend on multiple factors, including but not limited to, job location, where work will be performed, qualifications, work history and relevant experience. With our continual goal of making Lumentum a best place to work for our employees, we strive to offer employees competitive total compensation packages, which may include annual bonus, commission for certain sales roles, equity, and health and welfare benefits.