JobsMercury Marine

Mercury Marine: Mechanical Engineering Intern

Mercury Marine · Fond du Lac, WI

Posted Aug 26, 2026 · We last checked this listing on Sep 20, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

Behavioral

Tell me about a class project or personal project where you had to design a mechanical part from scratch. What did you use to model it and how did you know it would work?

whether the candidate has done real hands-on design work versus just coursework theory

Tell me about a time you had to analyze data from an experiment or test and it didn't match what you expected. What did you do next?

comfort with ambiguous results and whether they dig into root cause rather than dismiss it

Describe a group project where people had different opinions on the right approach. How did the team land on a decision?

ability to function on a cross-functional team without needing to be right or in charge

Tell me about a time something you built or tested failed. What did you think caused it, and what did you do about it?

maturity around failure analysis and whether they treat failure as information rather than something to hide

What draws you to engine design specifically, versus another area of mechanical engineering?

genuine interest in propulsion and engines versus a generic internship application

Tell me about a time you had to teach yourself a tool or skill you'd never used before in order to finish something.

self-motivation and learning ability, since the role expects fast onboarding with limited hand-holding

Technical

Walk me through your experience with CAD software, especially Creo if you've used it, and how you'd approach learning it quickly if you haven't.

actual CAD fluency and honesty about gaps plus willingness to ramp up fast

Say you're given a component with a tolerance stack up problem where parts aren't fitting together consistently on the line. How would you go about figuring out where the error is coming from?

basic grasp of dimensional stack up and a logical troubleshooting approach, since this is named directly in the posting

What does a validation test plan need to include, in your view, before you'd feel confident running a test?

whether they understand the structure and purpose of test planning, not just running experiments blindly

Situational

If a supplier tells you a part failed a validation test but their own data looks fine, how would you handle that conversation?

diplomacy and technical confidence when working with outside vendors on a sensitive issue

How would you explain a technical result to someone outside engineering, like someone in manufacturing or quality, who needs to act on it but doesn't know the jargon?

technical report writing and communication skills called out explicitly in the posting

You're given a small piece of a bigger project and a deadline that's tight. How do you decide what to prioritize if you're not sure where it fits in the larger picture?

independence and judgment when working with incomplete context, since interns often get partial visibility into projects

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The full job description

As published by Mercury Marine.

Are you ready for what’s next?   Come explore opportunities within Brunswick, a global marine leader committed to challenging conventions and innovating next-generation technologies that transform experiences on the water and beyond.  Brunswick believes “Next Never Rests™,” and we offer a variety of exciting careers and growth opportunities within united teams defining the future of marine recreation.  Mercury Marine: Fond Du Lac, WI- Mercury Marine: Mechanical Engineering Intern Location: Fond Du Lac, WI Workplace Category: Onsite Travel Required: No Direct Reports: No Pay Range:  $18.00-27.50 Visa Sponsorship: Applicants must be currently authorized to work in the United States.  This position is not eligible for employment visa sponsorship now or in the future.   Relocation: Yes Innovation is the heart of Brunswick.  See how your contributions will help transform vision into reality: Position Overview :  As a Mechanical Engineering Intern, you will work collaboratively and independently with highly qualified engineering professionals who are responsible for the design, production and manufacturing of outboard and sterndrive motors for the recreational boating industry.  You will be an integral member of an engineering team committed to delivering superior results. You'll learn how to work with a team as you own and manage assigned projects from inception to completion. At Brunswick, we have passion for our work and a distinct ability to deliver.  Essential Functions:   • 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 experience, experience in managing hardware for testing, and failure investigations  • Consult with suppliers, customers, and internal departments to find solutions to problems.  • Working within the Product Design, Manufacturing or Quality teams  In addition to a great hands-on learning experience, you will also acquire the skills needed to:   • Select and apply standard engineering techniques, procedures, criteria, and judgment in a real-world, hands-on, cross-functional environment  • Become experienced in design, failure analysis, data reduction/analysis, documenting and authenticating testing results, and technical report writing  Diversity of thought and experiences is fundamental when imagining the unimaginable. Certain skillsets/experiences are necessary; however, others can be developed along the way. Required 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 or more hours per week) through a full summer internship running May to August 2027  • Creative ability with strong mechanical aptitude  • Basic office skills: Microsoft Word, Excel, PowerPoint, etc.  • The ability to enroll in a formalized co-op Program through your university  • Dependable, self-motivated and engaged learner  Working Conditions: • Learning Opportunities: Our Student Program is designed to provide hands-on experience in a professional setting. You will work alongside experienced professionals and get a chance to apply your academic knowledge to real-world tasks.  • Project Work: The work environment is supportive, collaborative, and conducive to learning. Student co-ops or interns typically work on specific projects or tasks that contribute to the organization’s goals. This may range from supporting larger projects to handling smaller, individual assignments.   • Hours: Co-ops and Interns are expected to work a full 40-hour work week • Feedback and Performance Reviews: As a co-op or intern, you will receive feedback and performance reviews throughout your assignment. We value the importance for interns to understand their progress and areas for improvement.  The pay range for this position is $18.00-27.50 per hour.  The actual hourly rate offered will vary depending on  multiple factors including year in school/credits earned, degree, job-related knowledge/skills, relevant experience, business needs, and geographic location.  Compensation decisions are dependent upon the specifics of the candidate’s qualifications and the business context. Why Brunswick:   Whatever tomorrow brings, we’ll be at the leading edge.  As the clear leader in the marine industry, we’re committed to our values and supporting our exceptional people. We offer and encourage growth opportunities within and across our many brands. In addition, we’re proud of being recognized for making a splash with numerous awards !  About Mercury Marine Headquartered in Fond du Lac, Wisconsin, Mercury Marine® is the world’s leading manufacturer of recreational marine propulsion engines. A division of Brunswick Corporation (NYSE: BC), Mercury provides engines, boats, services and parts for recreational, commercial and government marine applications. Mercury empowers boaters with products that are easy to use, extremely reliable and backed by the most dedicated customer support in the world. The company’s industry-leading brand portfolio includes Mercury outboard engines, Mercury MerCruiser® sterndrive and inboard packages, Mercury propellers, Mercury inflatable boats, Mercury SmartCraft® electronics, Land 'N' Sea marine parts distribution and Mercury and Quicksilver® parts and oils. More information is available at MercuryMarine.com. Next is Now!   We value growth and development, recognizing that people come with a wealth of experience and talent beyond just the technical requirements of a job. If your experience is close to what you see listed here, please still consider applying. Brunswick is an Equal Opportunity Employer and considers all qualified applicants for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, protected veteran status or any other characteristic protected by federal, state, or local law.  Diversity of experience and skills combined with passion is key to innovation and inspiration and we encourage individuals from all backgrounds to apply.  If you require accommodation during the application or interview process, please contact hrsharedservices@brunswick.com  for support.  Brunswick and Workday Privacy Policies Brunswick does not accept applications, inquiries or solicitations from unapproved staffing agencies or vendors. For help, please contact our support team at: hrsharedservices@brunswick.com or 866-278-6942. All job offers will come to you via the candidate portal you create when applying through a posted position through https:///www.brunswick.com/careers .  If you are ever unsure about what is being required of you during the application process or its source, please contact HR Shared Services at 866-278-6942 or HRSharedServices@brunswick.com . #Brunswick Corporation - Mercury Marine For more information about EEO laws, - click here Brunswick Corporation participates in E-Verify as part of our commitment to a lawful and transparent hiring process. For additional information click here: https://www.brunswick.com/e-verify .

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