We are seeking a motivated Mechanical Design Engineer to support the design, prototyping, and testing of our high-performance thermal interface material (TIM) products as customers evaluate and adopt them. This is an early-career role for a hands-on engineer who wants to build depth in mechanical design, semiconductor packaging, and thermal testing. Working under the guidance of senior engineers, you will create CAD models and drawings, build and test assembly mockups, and generate the data that supports customer qualification of our TIM in advanced semiconductor packages. You will be exposed to hyperscaler, ODM, and OSAT programs from day one, with a clear path toward owning customer-facing technical work as you grow.
Join us to solve one of the most critical challenges facing the semiconductor and electronics industry – thermal management!
Your Responsibilities
- Create CAD models, assembly drawings, and fabrication documentation for integrating our liquid-metal based thermal interface materials into customer-specific electronic packages.
- Build, instrument, and test package and assembly mockups to demonstrate design feasibility, including mechanical and reliability testing.
- Run thermal and mechanical test setups, reduce and analyze the resulting data, and summarize findings in clear internal reports.
- Coordinate part fabrication with internal shop resources and external vendors to keep project schedules on track.
- Support senior engineers in customer technical engagements – preparing sample builds, test data packages, and supporting material for application notes and design guides.
- Help capture and document customer technical requirements, including geometric, load, assembly, and environmental constraints, thermal budgets, and reliability standards.
- Support the R&D team in continuous improvement of system and product performance.
- Maintain organized design files, test records, and documentation to support customer qualification processes.
Your Skills and Expertise
- Bachelor's or Master's degree in Mechanical Engineering or a closely related field.
- 0–3 years of professional experience; relevant internship, co-op, or hands-on project experience will be considered.
- Proficiency with CAD modeling and drafting (SolidWorks, Creo, or similar) and a working knowledge of GD&T.
- Hands-on prototyping and lab skills, with comfort building fixtures, running tests, and troubleshooting setups.
- Solid grounding in heat transfer and mechanics fundamentals; interest in electronics packaging and thermal design.
- Strong data analysis and technical writing skills (Excel, Python, or MATLAB a plus).
- Excellent communication skills and the willingness to ask questions, take direction, and learn quickly in a fast-moving environment.
- Exposure to semiconductor packaging, electronics assembly, thermal interface materials, or reliability testing (TCT, HTS, uHAST) is a plus.
- Familiarity with FEA modeling is a plus.
- Up to 10% travel to customer or vendor sites is expected.
Summary of Benefits
- Health, Vision & Dental – Boston Materials pays 75% of Health, Vision and Dental Care coverage for employee and dependents
- 4 weeks of supplemental Paid Parental and Family Leave
- Unlimited Paid Time Off
- Holidays: 14 days/year
Skills Required
- Bachelor's or Master's degree in Mechanical Engineering or a closely related field
- 0-3 years of professional experience; relevant internship, co-op, or hands-on project experience considered
- Proficiency with CAD modeling and drafting using SolidWorks, Creo, or similar software
- Working knowledge of GD&T
- Hands-on prototyping and laboratory skills, including building fixtures, running tests, and troubleshooting setups
- Knowledge of heat transfer and mechanics fundamentals
- Strong data analysis and technical writing skills
- Excellent communication skills and willingness to learn quickly and take direction
- Exposure to semiconductor packaging, electronics assembly, thermal interface materials, or reliability testing
- Familiarity with FEA modeling
- Currently authorized to work full-time in the United States
What We Do
Boston Materials is a deep-tech company that develops and manufactures advanced energy-transfer composite materials using its patented Z-axis Fiber technology. These materials are designed to solve critical thermal management and structural challenges in high-performance industries, including semiconductors, aerospace, and electrified vehicles. By utilizing reclaimed carbon fiber, the company provides high-volume, lightweight, and durable solutions that improve energy efficiency and performance for industrial and consumer product manufacturers.
