Mechanical Engineer Intern

Spartanburg, South Carolina, United States DEFENSE Internship Posted Oct 20, 2026
Apply on Oshkosh Defense (opens in a new tab) Sourced via oshkoshcorporation.wd5.myworkdayjobs.com · Posted 2026-10-20

About this role

Oshkosh Defense is hiring a Mechanical Engineer Intern, internship, on-site in Spartanburg, South Carolina, United States, in the DEFENSE sector.

About Oshkosh Delivery, an Oshkosh company

Oshkosh Delivery is dedicated to redefining the future of last-mile and commercial delivery. Built on Oshkosh Corporation’s legacy of engineering excellence and innovation, we design and manufacture advanced delivery vehicles that are durable, efficient, and sustainable. With a focus on reliability, driver experience, and cutting-edge technology, Oshkosh Delivery empowers fleets and businesses to move goods smarter, safer, and with confidence, today and for the road ahead.

Position Overview:

The Mechanical Engineer Intern will support the Design Engineering organization and manufacturing operations by assisting with production readiness activities, engineering investigations, and corrective actions under the guidance of senior engineers.

YOUR IMPACT:

- Assist with design support activities in production operations, learning vehicle systems and manufacturing processes.

- Support communication and liaison activities between the Product Design Team and the Operations Team.

- Assist with torque studies and related testing activities.

- Support root cause analysis of production issues by collecting data, documenting observations, and assisting with failure analysis under engineer supervision.

- Help develop and document corrective actions in collaboration with Design Engineering, Manufacturing Engineering, Quality, and Operations teams.

- Participate in production trials of new product designs and design changes, including data collection, observation, and results documentation.

- Perform engineering calculations, analysis, and research tasks as assigned under supervision, following Oshkosh and industry engineering standards.

- Assist in communicating technical findings and issue status to team members and supervision.

- Support project activities of limited scope, working as part of a cross-functional engineering team.

- Help create and maintain project documentation, technical reports, and analysis records.

- Collaborate with engineers, technicians, and other interns on assigned tasks and projects.

MINIMUM QUALIFICATIONS:

- Currently pursuing a Bachelor's degree in Mechanical Engineering, Manufacturing Engineering, or related engineering field from an accredited institution.

- Completed at least sophomore year coursework (or equivalent).

- Strong academic performance (minimum 3.0 GPA preferred).

- Basic understanding of engineering principles and problem-solving methodologies.

- Strong communication skills and ability to work effectively in a team environment.

- Proficiency with Microsoft Office Suite (Word, Excel, PowerPoint).

STANDOUT QUALIFICATIONS:

- Coursework or project experience related to mechanical design, manufacturing processes, or quality systems.

- Previous internship or co-op experience in manufacturing, automotive, or heavy-vehicle industries.

- Exposure to CAD systems (SolidWorks, CATIA, NX, or similar).

- Familiarity with root cause analysis methodologies (5 Why, Fishbone diagrams, 8D problem solving).

- Knowledge of automotive or heavy-vehicle systems.

- Strong analytical and technical writing skills.

Pay Range:
$18.00 - $37.00

The above pay range reflects the minimum and maximum target pay for the position across all U.S. locations. Within this range, individual pay is determined by various factors, including the scope and responsibilities of the role, the candidate's experience, education and skills, as well as the equity of pay among team members in similar positions. Beyond offering a competitive total rewards package, we prioritize a people-first culture and offer various opportunities to support team member growth and success.

Oshkosh Corporation will not discharge or in any manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with Oshkosh Corporation's legal duty to furnish information.

Certain positions with Oshkosh Corporation require access to controlled goods and technologies subject to the International Traffic in Arms Regulations or the Export Administration Regulations. Applicants for these positions may need to be "U.S. Persons," as defined in these regulations. Generally, a "U.S. Person" is a U.S. citizen, lawful permanent resident, or an individual who has been admitted as a refugee or granted asylum.

Description from Oshkosh Defense's official posting. Always confirm details on the company careers page.

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About Oshkosh Defense

Oshkosh Defense

Company in the mobility sector tracked nightly on the Mobility Jobs board.

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Larry Sherwood Jr.

About Larry Sherwood Jr.

Talent Acquisition Leader specializing in mobility, EV, and frontier tech. 1,000+ hires across roles ranging from production technicians to VPs, including 48 hires for the AFEELA U.S. launch at Sony Honda Mobility (98% offer acceptance, $1.5M+ agency savings). SHRM-CP certified. Build recruiting functions from scratch, no agencies.

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Curated by Larry Sherwood Jr. on the free Mobility Jobs board. Pulled nightly from company applicant tracking systems. Apply directly on the source link above to be considered.