Senior Mechanical Systems Engineer — Thermal & CFD

Scientific Search; Twinsburg (OH); On-site; USD 90,000 - 130,000; Full time

Job summary

Scientific Search in Twinsburg, OH is seeking a Mechanical Systems Engineer to lead mechanical design, thermal management, and system-level development of electronic products from concept to production.

You will apply thermodynamics, heat transfer, and structural analysis, develop analytical models, validate prototypes in the lab, and collaborate with electrical, manufacturing, quality, and product engineering teams to optimize performance, reliability, manufacturability, and cost.

Qualifications

• Bachelor’s degree in mechanical engineering or equivalent.
• Master’s degree preferred.
• 5+ years of mechanical product design experience; 10+ years preferred.
• Strong understanding of thermodynamics, heat transfer, fluid mechanics, and thermal management of electronic systems.
• Experience with high-reliability electronic systems and manufacturability considerations.
• Experience developing and validating analytical models with lab testing.
• Experience with thermal interface materials, heat sinks, and airflow optimization.
• Experience applying systems engineering to optimize tradeoffs across mechanical, thermal, electrical, manufacturability, and reliability.

Responsibilities

• Perform thermal, fluid flow, and heat transfer analyses for electronic products using analytical calculations and computational modeling.
• Develop thermal resistance networks and system-level thermal models to predict temperatures and performance.
• Evaluate cooling strategies including heat sinks, heat spreaders, vapor chambers, TIMs, and enclosure airflow.
• Collaborate with electrical engineers to establish component power dissipation budgets and thermal design requirements.
• Correlate simulation results with laboratory testing and refine models based on empirical data.
• Perform structural FEA to ensure thermal expansion, vibration, and mechanical stresses stay within limits.
• Design mechanical components, assemblies, and enclosures for electronic products.
• Develop CAD models, engineering drawings, and Bills of Materials.
• Support prototype builds, production releases, and sustaining engineering activities.
• Participate in design reviews and cross-functional product development teams.
• Perform mechanical, thermal, and fluid-system design reviews and drive issues to closure.
• Support DFMEA, DFA, and DFR throughout product development.
• Prepare engineering reports detailing modeling assumptions, methods, validation results, and recommendations.

Skills

Thermal management

Analytical modeling

3D CAD

Python

MATLAB

CFD

Prototyping

Education

Bachelor's in mechanical engineering

Master's degree preferred

Tools

Solid Edge

SolidWorks

ANSYS

COMSOL Multiphysics

MATLAB

Python

Job description

Scientific Search in Twinsburg, OH is seeking a Mechanical Systems Engineer to lead mechanical design, thermal management, and system-level development of electronic products from concept to production.

You will apply thermodynamics, heat transfer, and structural analysis, develop analytical models, validate prototypes in the lab, and collaborate with electrical, manufacturing, quality, and product engineering teams to optimize performance, reliability, manufacturability, and cost.