Mechanical Engineering Intern - Summer 2026

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Green Bay, WI, USA
In-Office
Software • Design
The Role

Mechanical Engineering Intern

At Salas O’Brien we tell our clients that we’re engineered for impact. This passion for making a difference applies just as much to our team as it does to our projects. That’s why we’re committed to living our values every day: inspiring, achieving, and connecting as shared owners of our success with a focus on a sustainable future.

Building for the long-term means that all of our team members can expect to work on amazing projects with a people-first approach to problem solving. It also means that each member of our team has truly limitless potential to build a unique, meaningful, and high-impact career—and they’ll receive great total rewards along the way.

About Us:

Founded in 1975, Salas O’Brien is an employee-owned engineering and professional services firm focused on achieving impact for our clients, our team, and the world. We know that tomorrow’s requirements are today’s opportunities, and we are here to design lasting solutions for pressing challenges.

We work across a variety of industries providing integrated engineering and consulting services. Our specialized experience includes design for data centers, healthcare, science and technology, high-rise buildings, clean energy, education, and other building types as well as structural and building sciences, infrastructure asset management, advanced robotics, and more.

Our technical expertise is paired with an exceptional team of business development, human resources, finance and accounting, information technology, and marketing professionals, all of whom play a key role in bringing our commitments to life every day.

Job Summary:

We welcome rising college sophomores, juniors, and seniors to apply to be a summer intern at our Green Bay Office. Our interns are embedded into our teams and get the opportunity to work on real projects under the supervision and education of our experienced engineers.

Responsibilities:

  • Work with experienced engineers to develop skills and knowledge.
  • Encouraged to solve engineering problems using their education.
  • Develop plant layouts and 3D models to meet project needs.
  • Assists in the preparation or modification of reports, specifications, plan, construction schedules, studies, permits, and designs for assigned projects.
  • Uses computer assisted engineering and design software and equipment to prepare engineering and design documents.
  • Familiarize themselves with state-of-the-art design and various state and local regulations.
  • Other duties as assigned.

Qualifications and Experience:

  • Currently pursuing a bachelor’s or master’s degree in mechanical engineering or mechatronics

Skills:

  • Self-motivated with ability to collaborate with a team
  • Accepts direction and supervision well
  • Excellent critical thinking and problem-solving skills
  • Excellent verbal and written communication
  • Proficiency in MS Word, Excel, and Outlook
  • 3D modeling experience a plus
  • ACAD/Revit experience a plus

Location: Green Bay, WI

Travel: Possible periodic travel to client sites

Qualifications Education Preferred Masters or better. Bachelors or better. Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities
This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor.

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The Company
HQ: Irvine, California
2,062 Employees

What We Do

Salas O’Brien is an employee-owned engineering and technical services firm focused on advancing the human experience through the built environment. Our team is engineered for impact™, helping clients achieve critical goals, advancing our team members through growth and opportunity, and operating at the center of important global issues, including sustainability and decarbonization. We are a top firm as ranked by Engineering News-Record and Consulting-Specifying Engineer, and we have appeared for over a decade on the Inc. 5000 list of North America’s fastest-growing private companies.

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