Jobs · Engineering · Massachusetts

Mechanical Design Engineer

Lightmatter · Boston, MA · 1 wk ago
HybridEngineering$400/hrFull-time

Responsibilities

  • Create CAD models of package stack-up and associated components.
  • Perform mechanical design analysis to identify and implement solutions that improve package mechanical integrity.
  • Execute tolerance stack-up analyses and create GD&T drawings for advanced packages — including optically aligned assemblies where micron-level precision defines product performance.
  • Apply manufacturing expertise to influence design choices, perform FMEAs, and evaluate the cost implications of process and design decisions.
  • Collaborate with package and systems teams to ensure packaging solutions comply with system boundary conditions.

Requirements

  • BS or MS in Mechanical Engineering or a related field.
  • Minimum of 3 years of mechanical design experience in semiconductor packaging, optoelectronics, or photonics modules.
  • Proficiency in CAD tools such as Solidworks or Creo, with a focus on mechanical design best practices.
  • Expertise in Geometric Dimensioning and Tolerancing (GD&T) and tolerance stack-up analysis.
  • Manage prototype builds with external vendors, validating the designs, and ensuring the scalability to high volume manufacturability.
  • Working knowledge of semiconductor packaging technologies, including the mechanical and thermal trade-offs of 3D, 2.5D, and FCBGA architectures.

Preferred Qualifications

  • Knowledge of ASME Y14.5 standards.
  • Ability to drive results independently and with minimal supervision.
  • Working knowledge of FEA tools (ANSYS, Abaqus, or similar) for structural and thermal analysis.
  • Fiber array unit (FAU) attach, optical connector, or photonic alignment experience.
  • Experience with liquid cooling or advanced thermal architectures for AI/HPC systems.
  • Exposure to high-volume manufacturing and OSAT engagement in Asia.
  • Strong cross-functional communication skills and a bias toward fast, data-driven iteration.

Similar jobs