Senior Applications Engineer - Thermal Interface Material Integration
About the job
- Bachelor’s or Master’s degree in Mechanical Engineering, Materials Science, Electrical Engineering, or a related field.
- Experience with computer-aided design modeling and drafting, hands-on prototyping, mechanical and thermal testing, data analysis, and report generation.
- Three to seven years of experience in semiconductor packaging, electronics assembly, thermal interface materials, or applications engineering in a business-to-business technical product company.
- Strong understanding of system-level processor packaging and thermal design, including cold plate and stiffener/lid design, TIM1, TIM1.5, and TIM2 selection, and associated reliability testing such as uHAST, TCT, and HTS.
- Ability to lead cross-functional technical efforts and deliver customer-specific solutions on time.
- Ability to explain complex technical topics to engineers and non-technical stakeholders.
- Applicants must be currently authorized to work in the United States on a full-time basis.
- Lead internal design and development efforts to integrate liquid-metal-based thermal interface materials into customer-specific electronic packages.
- Build and test package and provision assembly mockups to demonstrate design feasibility, including mechanical and reliability testing as needed.
- Document designs for fabrication and customer coordination, and lead efforts to fabricate provisions internally or externally in support of customer schedules.
- Support the research and development team in continuously improving system performance.
- Act as the primary technical point of contact for original design manufacturer, outsourced semiconductor assembly and test, and hyperscaler customer technical teams during early- and mid-stage engagements.
- Work with the business development team to uncover and document customer technical requirements, including geometric, load, assembly, environmental, thermal-budget, and reliability constraints.
- Prepare and deliver application notes, design guides, and data reports to support customer decision-making and qualification processes.
- Support customer testing trials, troubleshoot technical issues in real time, and coordinate resolution with internal engineering, manufacturing, and quality teams.
- Capture customer feedback and synthesize insights to guide internal product development and roadmap planning.
- Experience with the design and fabrication of elastomeric materials.
- Familiarity with thermal test setups, C-SAM, X-ray, or finite element analysis modeling.
About the company
Boston Materials develops and manufactures advanced energy-transfer composites for high-performance electronics, aerospace, and electrified mobility. Its Liquid Metal ZRT® uses vertically oriented carbon fibers embedded in a liquid metal matrix to create a drop-in thermal interface that conducts heat efficiently between components, and is designed for seamless integration into automated assembly. The company differentiates itself by combining Z-axis carbon fiber reinforcement with a liquid metal matrix and scaling via roll-to-roll production using reclaimed carbon fiber, enabling multiple applications from a single platform. Its goal is to scale production to meet industrial demand across semiconductor, aerospace, and electrified-vehicle markets while expanding sustainability through recycled carbon fiber use.
Company Size
11-50
Company Stage
Early VC
Total Funding
$42.8M
Headquarters
Billerica, Massachusetts
Founded
2016
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Simplify's Take
What believers are saying
- December 2025 Mitsubishi collaboration targets HPC and AI data-center demand.
- LMZ1100 already delivered over 10°C cooling gains on kilowatt-scale GPUs and ASICs.
- The company launched 60-inch-wide industrial-scale Z-axis fiber production in 2025.
What critics are saying
- Boston Materials remains capital-constrained after $13.5 million in 2024 funding.
- Second-generation ZRT commercialization depends on Mitsubishi integration labs in Asia.
- A single thermal-product failure or customer redesign could crush adoption by 2027.
What makes Boston Materials unique
- Liquid Metal ZRT pairs Z-axis carbon fiber with liquid metal for chip cooling.
- Boston Materials claims drop-in pick-and-place integration for automated semiconductor assembly lines.
- Mitsubishi Chemical backed second-generation ZRT development in December 2025.
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Benefits
- Health Insurance
- Vision Insurance
- Dental Insurance
- 401(k) plan
- 4 weeks of supplemental Paid Parental and Family Leave
- Unlimited Paid Time Off
- Holidays: 14 days/year