Mechanical Engineer (AI & Data Center Optical Modules)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!Employment Type: Full-time, Existing vacancyLocation: San-Jose (On-Site)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 RoleWe are seeking Mechanical Engineers to support the design and development of next-generation high-speed optical modules for AI and data center interconnect applications.
This role focuses on advanced mechanical and thermal packaging solutions for high-density, high-power optical modules, including pluggable form factors and emerging advanced packaging architectures.Engineers in this role will define and deliver mechanical package solutions from early concept and system architecture through prototyping, validation (EVT/DVT), and high-volume manufacturing ramp. The scope of responsibility will scale with experience. Senior engineers are expected to provide technical leadership, influence mechanical and thermal architecture decisions, and contribute to long-term platform and technology roadmap development.This position plays a critical role in enabling scalable, cost-effective optical module platforms that meet the performance, power, and manufacturability demands of AI-driven data center systems.What You'll Be DoingDesign and develop mechanical packaging solutions for high-speed optical modules used in AI and data center interconnect systemsDrive mechanical concepts from architecture definition through detailed design, prototype build, validation, and production rampDevelop detailed 3D CAD models and engineering documentationPerform advanced thermal and mechanical stress analysis (FEA) to address high power density, airflow constraints, and long-term reliabilityOwn GD&T definition and tolerance stack-up analysis for high-density opto-electro-mechanical assembliesDesign fixtures, tooling, and test infrastructure to support optical alignment, module validation, and scalable manufacturingCollaborate closely with optical, electrical, thermal, reliability, manufacturing, and supply-chain teams to deliver integrated, system-aware solutionsFor senior-level engineers: provide technical direction, review designs, mentor junior engineers, and influence mechanical and thermal platform strategyWhat We're Looking ForEducation: B.S. in Mechanical Engineering or a related discipline (M.S.
or Ph.D. preferred)Experience: Core Requirements:Experience level flexible: typically 5+ years of relevant industry experience for senior-level consideration; motivated early-career engineers with strong fundamentals and relevant project experience are also encouraged to applyPrior experience developing optoelectronic or high-speed electronic products for data center, AI, or high-performance computing applications is highly valuedStrong proficiency in mechanical design and thermal simulation tools such as SolidWorks, FloTHERM, or equivalent CAD/FEA platformsDeep understanding of thermal management, structural analysis, and high-density packaging designExperience with GD&T and tolerance stack-up analysis for complex assembliesFamiliarity with high-density, non-hermetic optical module packaging and design for manufacturability (DFM/DFA)Working knowledge of data analysis tools (e.g., JMP) and basic scripting or programming (VB, C, MATLAB, etc.) to support testing and automation is a plusAbility to operate independently on complex technical problems while contributing effectively in a highly cross-functional environment.Self-motivated and adaptable in a fast-paced R&D and NPI environmentWillingness to travel internationally (up to 25%) to manufacturing and contract manufacturing sites to drive NPI execution, manufacturing readiness, yield improvement, and high-volume production rampPerks You'll LoveFlexible time offHealth and wellness benefits (physical and mental)Tuition reimbursement and career growth supportA workplace built for you: free gym, games room, prayer roomSubsidized meals, free coffee/teaEmployee stock options and incentive plansA collaborative, innovative, and inclusive cultureJoin a Team That's Shaping the FutureAt 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 to request accommodation.Join us—your future starts here!Pay Range:P70-USA-1 :$134,750.00 - $192,500.00Disclaimer: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.