Mercury Marine: Intern Design Analysis Group-Fluid & Thermal

About the role

The Design Analysis Group (DAG) at Mercury Marine is seeking an Intern Design Analysis Engineer‑Fluid & Thermal. This internship provides hands‑on experience applying engineering fundamentals in Computational Fluid Dynamics (CFD) and heat transfer to solve real‑world product development challenges. Interns will develop technical expertise, collaborate with cross‑functional teams, and contribute to innovation in a fast‑paced engineering environment.

Location: Plant 10, Fond du Lac, WI (On‑site). Travel: None. Relocation assistance: Yes. Visa sponsorship: Not available.

Responsibilities

• Work on multiple projects (typically 6‑8) covering various aspects of marine propulsion systems during the internship.
• Learn and use CFD software (SIEMENS Star‑CCM+) to improve design and development of marine propulsion, drive systems, and vessels for optimized fluid flow and heat transfer.
• Use engine performance prediction software (GT Suite) to predict and optimize horsepower and torque of marine engines, and assess impacts on acceleration and top speed.
• Support all phases of the product development cycle from concept to production, collaborating with cross‑functional teams.

Required qualifications

• Current enrollment in a BS program majoring in Mechanical, Aerospace, Engineering Mechanics, Naval Architecture, or a related field.
• At least sophomore standing (minimum second semester) with 48 completed credits.
• Availability to work full‑time (40+ hours per week) for the summer months of May through August 2027.
• Ability to enroll in a formal co‑op/intern program through your university.

Preferred qualifications

• Interest in fluid dynamics, heat transfer, and numerical methods.
• Boating, fishing, or other marine experience (beneficial but not required).
• Dependable, self‑motivated, and engaged learner.

Learning opportunities

• Hands‑on experience in a professional engineering setting alongside experienced professionals.
• Exposure to real‑world tasks that apply academic knowledge to product development.
• Participation in specific project work that contributes to organizational goals.
• Full‑time 40‑hour work week with regular feedback and performance reviews.

Pay

Hourly rate: $18.00 – $27.50, dependent on year in school, credits earned, degree, relevant experience, and geographic location.

About Mercury Marine

Headquartered in Fond du Lac, Wisconsin, Mercury Marine® is the world’s leading manufacturer of recreational marine propulsion engines. As a division of Brunswick Corporation, Mercury offers outboard engines, sterndrives, inboard packages, propellers, inflatable boats, SmartCraft® electronics, and marine parts and services for recreational, commercial, and government applications.