Sr. System Mechanical Design Engineer (Boston and Mountain View)

System Mechanical Design Engineer 

Lightmatter builds chips for artificial intelligence computing. Our architecture leverages unique properties of light to enable fast and efficient inference and training engines. If you're a collaborative engineer or scientist who has a passion for innovation, solving challenging technical problems and doing impactful work like building the world's first optical computers, consider joining the team at Lightmatter!

We are delivering a fundamentally new kind of computer that calculates using light. Transistors, the workhorse of modern computers, aren't improving at the rate they once were. To scale AI, companies are building increasingly large and energy-expensive data centers—a path that is neither financially nor environmentally sustainable. By delivering ultra-high performance and energy efficiency, Lightmatter’s compute engine will power rapid advancements in AI while lowering its environmental footprint. We are inviting a Mechanical Engineer with System design expertise to join our team with a strong background in the design of various server components and good insight into thermal solutions used in air or liquid-cooled systems.

In this role, you will be part of the system and packaging team to design, analyze, and build reference boards and systems that will be deployed to our customers and partners. You will be working closely with Package and System Architects to carry out mechanical and thermal design analysis of board and system configurations to meet product performance requirements. You will be responsible for performing necessary stack up and tolerance analysis and propose appropriate solutions to finalize the design. In addition, performing system thermal modeling in collaboration with the systems team to ensure thermal boundary conditions of various components are satisfied while achieving performance targets. 

The results of your work will lead to delivering a system level solution for leading edge products in the data centers and high-end compute segment.   

Responsibilities 

• Design, test, analyze, integrate, qualify and document hardware of moderate to high complexity
• Negotiate system design requirements with customers, vendors and key stakeholder
• Create concept, intermediate, and final designs with intermediate milestone peer review and empirical prototype evaluation. 
• Ensure proper packaging of systems to obtain optimal thermal and structural design
• Create and communicate drawings, CAD models and other design collateral through BOM management.
• Participate in compliance testing with Nationally Recognized Test Labs in ensuring product meets all EMI/EMC and safety standards required
• Oversee and conduct root-cause-analysis and technical investigations for Systems thermal and mechanical designs
• Manage outside fabricators to ensure correct build-to-print and quality workmanship
• Participate in cross-functional team efforts in integration, pre-qualification and qualification for products and sub-systems of moderate to high complexity
• Provide assistance to creating technical road-maps, establishing best practices, and determining product feasibility

Requirements

• B.S or M.S. in Mechanical Engineering or relevant field
• B.S with 6 to 10 years of experience, or M.S. with 3 to 6 years experience with a proven track record in system mechanical design with multiple successful product releases
• Experience with CAD tools (Solidworks preferred) 
• Experience in CFD analysis capabilities using Flotherm or Icepak
• Experience in the application of heat transfer principles, strength of materials and materials selection
• Experience in Designing thermal and mechanical components of a custom chassis or server including the enclosure, heat sinks, cold plates, brackets, rails, support structures, etc.

Preferred Qualifications

• Knowledge of ASME Y14.5 standards is a plus. 
• Experience in system air or liquid cooled system thermal design 
• Experience in designing (DFM) in sheet metal, die casting, extrusion, stamping, forging, and plastic injection molding
• Ability to work independently and tackle projects with minimum supervision
• Creative thinker, have the ability to solve problems quickly  

Benefits

• Comprehensive Health Care Plan (Medical, Dental & Vision)
• 401k matching
• Life Insurance (Basic, Voluntary & AD&D)
• Generous Time Off (Vacation, Sick & Public Holidays)
• Paid Family Leave
• Short Term & Long Term Disability
• Training & Development
• Flexible, hybrid workplace model
• Stock Option Plan
• Commuter Benefit (pre-tax)

We offer competitive compensation. The base salary range for this role, inclusive of all US locations, is $160,000-$200,000. Your base salary will be determined based on location, experience, educational background, and market data.

Lightmatter recruits, employs, trains, compensates, and promotes regardless of race, religion, color, national origin, sex, disability, age, veteran status, and other protected status as required by applicable law.