System Mechanical Design Engineer

Who you are

• If you are a rigorous, detail-oriented engineer eager to solve complex thermal-mechanical packaging puzzles, orchestrate supply chains, and build the physical backbone of next-generation AI infrastructure, we want you on our team
• Bachelor’s degree in Mechanical Engineering or related fields
• 5+ years of experience in system mechanical design with multiple successful product releases
• Proficient in a 3D CAD solid modeling software package such as SolidWorks
• Familiar with both thermal and structural testing and analysis
• Experience with state-of-the-art mechanical engineering design and analysis tools (ANSYS preferred)
• Possess a strong understanding in the application of heat transfer principles, strength of materials, materials selection, design for vibration environments and the ability to apply those principles to unique mechanical design challenges
• Industry experience in electronics packaging
• Strong communication and adaptive in execution
• Master’s degree in Mechanical Engineering or related field
• Familiar with 3D printing equipment and processes
• Proficient with FEA software package (ANSYS, SolidWorks)
• Proficient with thermal simulation and analysis software package (IcePak, Flotherm)
• Candidates should have capacity to comply with the federally mandated requirements of U.S. export control laws

What the job involves

• We are seeking a motivated, dedicated, and hands-on mechanical design engineer to help develop a chassis and rack platforms for the next-generation artificial intelligence server alongside a team of world-class scientists and engineers
• As a Mechanical Engineer at Lightmatter, you will sit at the critical intersection of silicon photonics, advanced 3D packaging, and extreme-density thermal management
• You won't just be tweaking existing designs; you will be the practical execution engine transforming complex electro-optical concepts into scalable, manufacturable hardware
• While this role focuses on flawless technical execution rather than top-level project architecture, your hands-on impact will be immense
• You will navigate the transition from initial CAD and prototype builds to leading external Contract Manufacturers (CMs)
• Design, test, analyze, integrate, qualify and document hardware of moderate to high complexity, in a dynamic startup environment
• Ensure proper packaging of optical, electrical and related components for optimal thermal performance
• Responsible for mechanical design from generating CAD and drawings, to BOM generation and crafting work instructions
• Fully understand project requirements and timelines while identifying gaps and drive to closure with the stakeholders
• Initiate and drive design reviews while managing the resulting feedback and change requests
• Collaborate in root-cause-analysis and technical investigations with cross-functional teams
• Drive hands-on in-house build and integration activities, scaling from initial prototype fabrication to leading external CMs for high-volume production
• Manage outside fabricators to ensure correct build-to-print and quality workmanship
• Work with technical program managers to define a detailed timeline
• Actively mitigate and manage lead-time issues with the supply chain team
• Collaborate with relevant cross-functional engineering teams to understand dependencies
• Provide assistance to creating technical road-maps, establishing best practices, and determining product feasibility

Benefits

• Commuter benefit
• Happy hour -Spend time together and build friendships
• Generous vacation policy and holidays
• 401(K)
• Opportunity to learn from your peers and teach them what you know across electronics, photonics, machine learning, and more