Mechanical Engineering Intern — Hands-On Summer Co‑op

Brunswick Corporation; Fond du Lac (WI); On-site; USD 25,000 - 38,000; Full time

Job summary

Mercury Marine, a division of Brunswick Corporation, is seeking a Mechanical Engineering Intern in Fond du Lac, WI. You will join a collaborative team designing and testing outboard and sterndrive engines, using Creo and other tools to validate concepts and drive projects from inception to completion.

This full-summer internship (May–August 2027) requires 40+ hours per week, a BS in Mechanical Engineering pursuit, and a proactive, learning mindset. Relocation is supported.

Qualifications

• Current enrollment in a BS program with a major in Mechanical Engineering.
• Minimum second semester sophomore status with 48 completed credits.
• Availability to work full-time (40+ hours/week) through May–August 2027.
• Creative ability with strong mechanical aptitude.
• Basic office skills: Word, Excel, PowerPoint, etc.
• The ability to enroll in a formalized co-op Program through your university.
• Dependable, self-motivated and engaged learner.

Responsibilities

• Support the mechanical design of various engine systems and components.
• Assist with validation test plans and testing.
• Interface with cross-functional teams within Mercury.
• Utilize CAD software/Creo.
• Gain experience in dimensional stack up experience, testing and data analysis, and failure investigations.
• Consult with suppliers, customers, and internal departments to find solutions.
• Working within the Product Design, Manufacturing or Quality teams.

Skills

Mechanical aptitude

Microsoft Word

Microsoft Excel

Microsoft PowerPoint

Cross-functional teamwork

Education

BS in Mechanical Engineering

Tools

Creo CAD

Job description

Mercury Marine, a division of Brunswick Corporation, is seeking a Mechanical Engineering Intern in Fond du Lac, WI. You will join a collaborative team designing and testing outboard and sterndrive engines, using Creo and other tools to validate concepts and drive projects from inception to completion.

This full-summer internship (May–August 2027) requires 40+ hours per week, a BS in Mechanical Engineering pursuit, and a proactive, learning mindset. Relocation is supported.