Mechanical Design Engineer

Langham Recruitment; Billerica (MA); On-site; USD 80,000 - 120,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Unlimited PTO

14 paid holidays

Job summary

Langham Recruitment is recruiting a Mechanical Design Engineer for an advanced materials company in Billerica, MA. You will develop CAD models, drawings and documentation to integrate TIMs into electronic packages, and collaborate on prototyping, testing and thermal analysis.

The role targets early-career engineers with 0–3 years of experience, offering hands-on design work, data-driven validation and cross-functional teamwork in a fast-paced environment.

Qualifications

• Bachelor's or Master's degree in Mechanical Engineering or related discipline.
• 0–3 years of professional experience; internships/co-ops encouraged.
• Proficiency in 3D CAD modelling and engineering drawings using SolidWorks or Creo.
• Working understanding of Geometric Dimensioning and Tolerancing (GD&T).
• Experience with prototyping, testing, fixture assembly and troubleshooting.
• Solid foundation in heat transfer and electronics packaging principles.
• Strong analytical and data interpretation skills; able to document findings clearly.
• Good communication and collaborative mindset in a fast-moving team.

Responsibilities

• Create CAD models, drawings and fabrication docs to integrate liquid-metal-based TIMs into electronic packages.
• Prototype, instrument and test package mock-ups and fixtures; evaluate design feasibility across thermomechanical tests.
• Set up and perform thermal and mechanical tests; analyze data and write technical reports.

Skills

CAD modeling

GD&T

Thermal design

Prototyping

Data analysis

Analytical skills

Team collaboration

Education

Bachelor's or Master's in Mechanical Engineering

Tools

SolidWorks

Creo

Job description

We’re working with an innovative advanced materials company developing next-generation thermal management solutions for the semiconductor and electronics industries. As demand for more powerful computing and advanced semiconductor packaging continues to grow, effective thermal management is becoming increasingly important.

They’re looking for a Mechanical Design Engineer to join their team in Billerica, Massachusetts, supporting the development, prototyping and testing of high-performance thermal interface materials (TIMs).

This is an excellent opportunity for an early-career mechanical engineer to work on practical engineering challenges, develop their CAD and testing capabilities, and gain exposure to advanced semiconductor packaging programmes. You’ll work closely with experienced engineers, contributing to product development and generating the technical data needed to demonstrate performance and support customer qualification.

The role offers exposure to projects involving hyperscalers, original design manufacturers (ODMs) and outsourced semiconductor assembly and test providers (OSATs), with the opportunity to take on greater customer-facing technical responsibility as your experience develops.

Key Responsibilities

• Mechanical Design: Create CAD models, assembly drawings and fabrication documentation to support the integration of liquid-metal-based thermal interface materials into customer-specific electronic packages.
• Prototyping & Testing: Build and instrument package mock-ups and assembly fixtures, assessing design feasibility through mechanical, thermal and reliability testing.
• Thermal Analysis: Set up and conduct thermal and mechanical tests, analyse the resulting data, and prepare clear technical reports documenting findings.
• Fabrication & Supplier Coordination: Work with internal workshop resources and external vendors to coordinate component fabrication and ensure project timelines are maintained.
• Customer Qualification Support: Assist senior engineers with sample builds, test data packages and technical materials for application notes and design guides.
• Requirements Capture: Help document customer specifications and constraints, including geometry, mechanical loads, assembly requirements, operating environments, thermal budgets and reliability standards.
• R&D & Continuous Improvement: Collaborate with the wider R&D team to improve product performance, refine designs and support ongoing development.
• Technical Documentation: Maintain accurate CAD files, design records, test results and documentation throughout the customer qualification process.

Required Skills & Experience

• A Bachelor's or Master's degree in Mechanical Engineering or a closely related discipline.
• 0–3 years of relevant professional experience. Applications from candidates with suitable internships, co-ops or hands-on engineering projects are encouraged.
• Proficiency in 3D CAD modelling and engineering drawings, using SolidWorks, Creo or similar software.
• A working understanding of Geometric Dimensioning and Tolerancing (GD&T).
• Practical experience with prototyping, laboratory equipment, fixture assembly, testing and troubleshooting.
• A sound understanding of heat transfer and mechanical engineering fundamentals, with an interest in thermal design and electronics packaging.
• Strong analytical skills and the ability to interpret experimental data and communicate findings through technical documentation.
• Good communication skills, a proactive approach to learning, and the ability to work collaboratively in a fast-moving engineering environment.
• Semiconductor packaging, electronics assembly or thermal interface materials.
• Reliability testing, including temperature cycling (TCT), high-temperature storage (HTS) or highly accelerated temperature and humidity stress testing (uHAST).
• Finite Element Analysis (FEA).
• Data analysis using Excel, Python or MATLAB.

Salary & Benefits

• $80,000–$120,000 annual base salary.
• Health, dental and vision insurance, with 75% of premiums covered for employees and dependants.
• Unlimited paid time off.
• 14 paid holidays per year.
• Up to 10% travel to customer and supplier sites.