Senior Thermo-Mechanical Engineer (Boston and Mountain View)

Senior Thermo-Mechanical Engineer

Lightmatter builds chips that enable extreme-scale artificial intelligence computing clusters. 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!

In this role, you will work on leading-edge packaging technologies to enable AI architectures that will set new industry standards regarding compute power, performance, and efficiency. You will collaborate with the packaging team to carry out the required structural analysis for packaging technologies under consideration, identify key failure modes under product use conditions, and run appropriate parametric studies to influence product and package design upstream. You will focus on thermo-mechanical analysis and characterization of advanced photonics packaging technologies, including SI-package 3D stack development and novel fiber attach methods, to define design, material, and process solutions that successfully meet assembly and reliability requirements. The results of your work will lead to advanced package designs that meet power dissipation, assembly, and reliability requirements while delivering a system-level solution for leading-edge products in the AI market.

Responsibilities

• Develop finite element analysis models for wafer-level and unit-level assembly processes, identifying design, process, and material parameters to mitigate failure modes and optimize yield.
• Develop finite element stress models for photonic packaging.
• Perform analysis to identify key reliability risks under product use conditions and drive appropriate design and material solutions to improve product mechanical integrity.
• Conduct multi-physics simulations, such as solder collapse modeling to define bump architecture or thermal-structural analysis for packaging stress.
• Summarize and communicate findings to key stakeholders across Lightmatter, suppliers, and customers as required.
• Develop automation scripts using Python and MATLAB to improve modeling efficiency.
• Develop analytical or semi-empirical models for quick turn assessments for new product concepts.
• Drive characterization and validation of mechanical designs and electronic assemblies through lab-scale prototyping and/or by initiating appropriate experiments with vendors.
• Write reports and document methodologies.

Requirements

Required Qualifications:

• M.S. or Ph.D. in Mechanical Engineering, Material Science, or a related engineering field.
• 3-6 years of experience in finite element analysis techniques and relevant coursework.
• Proficiency in the use of analysis tools such as ANSYS/ABAQUS and structural design tools like Solidworks and AutoCAD.
• Knowledge of 2D/3D packaging technologies and exposure to the thermo-mechanical challenges associated with these technologies.
• Direct experience applying finite element methods to microelectronics packaging and system-level compute hardware.
  

Preferred Qualifications

• Excellent communication skills and the ability to work well in cross-functional teams.
• Ability to work independently and manage multiple projects with minimal supervision.
• Strong creative thinking skills with 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

We offer competitive compensation. The base salary range for this role, inclusive of all US locations, is $148,000-$188,000. 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.