Sr. Principal Engineer: Silicon Photonics-Hybrid Integration

Lumentum Operations LLC; San Jose (CA); On-site; USD 150,000 - 214,000; Full time

Benefits offered by this job

Flexible time off

Health and wellness benefits

Tuition reimbursement

Gym and facilities

Subsidized meals

Stock options

Job summary

Lumentum in San Jose seeks a Sr. Principal Engineer for silicon photonics – hybrid integration. Lead high-volume process flows to fuse III-V with silicon, enabling PIC performance for AI, cloud, and data-center applications.

You will collaborate with wafer fabs, test teams, and process engineers to ensure chip solutions meet customer specs, while driving yield, cost efficiency, and innovation across the photonics platform.

Qualifications

• PhD in Electrical Engineering or Physics or equivalent
• Experience with IC and photonic IC integration methods
• Strong background in photonic device fabrication and test analysis
• Excellent oral and written English communication skills

Responsibilities

• Develop III-V to SiPho hybrid integration process flows within the PIC team
• Collaborate with wafer fabrication partners and back-end teams to meet specs and tolerances
• Design verification plans and analyze engineering measurements for high-volume manufacturing
• Promote continuous improvement to optimize performance and cost efficiency

Skills

Photonic IC integration

Wafer fabrication

Test measurement analysis

English communication

Education

PhD in Electrical Engineering or Physics

Tools

Lumerical

Synopsys

Job description

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! 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

The Sr. Principal Engineer: silicon photonics – Hybrid integration is a key leader responsible for the development of high-volume process flows that integrate unique materials to enhance the performance of Silicon photonics. The solutions will be deployed to cloud and network applications, for the rapidly growing AI market. You will work in a team environment to develop unique process flows and chip functionality through conception, process step design, process integration, plus the analysis and optimization of the integrated component performance.

What You'll Be Doing

Develop III-V to SiPho hybrid integration process flows for novel and unique III-V components while working within the larger photonic integrated circuit (PIC) development team. Work collaboratively with wafer fabrication partners and back end of line process integration partners to ensure that the final chip solutions meet all end customer specifications, and the constraints for target applications considering fabrication process capability and required manufacturing tolerances. Collaborate with test engineering team to develop dedicated test and verification plans, define requirements, and analyze engineering verification measurements. Consider performance and specification margin to enable high yield in a cost-sensitive high-volume manufacturing environment. Create a culture of continuous improvement to optimize performance and cost efficiency, to maintain Lumentum's product competitiveness and to find novel solutions for next generation products Encourage cross-disciplinary communication between the fabrication and design teams as well as the broader photonics component development team.

What We're Looking For

Education: PhD in Electrical Engineering or Physics or equivalent combination of education and work experience

Experience: Core Requirements: A PhD in Electrical Engineering or Physics or equivalent combination of education and work experience along with a solid background in optical physics and photonics Experience in managing advanced IC and photonic IC integration methods, 2D, 2.5D, 3D stacking approaches. Experience with photonic component development in a fast-paced environment. Strong background in photonic device fabrication and analysis of test results Experience with test methods used to characterize photonic chips Demonstrated drive and aptitude for wafer fabrication or post-wafer fabrication process development. Excellent oral and written English communication and presentation skills Self-motivated, with strong analytical and problem-solving skills

Desired Qualities: Proficiency with photonics simulation techniques such as FDTD, EME, etc. and software platforms that implement such techniques (e.g., Lumerical, Synopsys) Proficiency with photonic integrated circuit design flows, physical layout and verification software

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 [e-mail] to request accommodation. Join us—your future starts here!

Pay Range:

P80-USA-1 :$149,900.00 - $214,150.00 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. Lumentum is illuminating the networks of tomorrow with advanced photonic technologies that enable AI, data centers, telecom, industrial, and sensing applications. As AI accelerates the global demand for bandwidth and energy efficiency, we deliver the building blocks that keep data moving reliably, efficiently, and at massive scale. Our optical products support AI and compute infrastructure, cloud and DCI environments, metro and long-haul networks, while our lasers drive breakthroughs in precision manufacturing and sensing. For nearly five decades, Lumentum has been at the intersection of light and innovation. What began as a vision with JDS Uniphase to harness the power of photonics has evolved into a global force driving the communication infrastructure of tomorrow. At Lumentum, we're building more than a business—we're building a team of passionate innovators whose drive to collaborate, create, and connect the world fuels everything we do. We are part of the AI technology revolution and we are illuminating the path forward. Headquartered in San Jose, California, we operate worldwide through a network of R&D, manufacturing, and sales locations.