Demo

Mechanical Engineering Intern

Alliance Resource Partners, L.P.
Newburgh, IN Intern
POSTED ON 9/27/2025
AVAILABLE BEFORE 10/27/2025
Matrix designs, manufactures, and sells innovative technological products that help keep people safe. Originally focused on the underground coal mining industry, Matrix has expanded into new industrial markets in the United States and globally.

We are currently seeking a Mechanical Engineering Intern to join our team. This role offers hands-on experience in mechanical design, prototyping, and testing of safety-related equipment and products. The selected candidate will work alongside an experienced team of engineers, gaining exposure to the full product development cycle. This position works in a team environment at our office in Newburgh, IN. This is not a remote position.

This position reports to the Director of Engineering.

Duties and Responsibilities

  • Assist in the development of product specifications (may require researching applicable regulatory requirements for a given market).
  • Prepare and maintain documentation required to define products, verify compliance according to customer requirements, and fulfill product development processes using Arena Product Lifecycle Management (PLM) software.
  • Assist in completing design tasks from concept to validation by creating prototypes and conducting engineering development testing to ensure compliance with established requirements.
  • Create 3D models and detailed engineering drawings using SolidWorks
  • Work with the team to continuously improve existing products based on customer feedback, industry standards, and market requirements.
  • Participate in design reviews to ensure products meet specifications and that engineering documentation is complete, accurate, and compliant with defined requirements.
  • Collaborate with manufacturing engineers to ensure design meets manufacturing, safety, and cost goals.

Qualifications & Competencies

Employment Eligibility & Verification:

All applicants must be able to provide proof of eligibility to work in the United States. Employment is contingent upon the successful completion of the I-9 form, as required by federal law. Additionally, candidates will be required to undergo an employment verification process before beginning work. Please note that we do not offer sponsorship for work authorization (e.g., H-1B, TN, or other visas) at this time.

  • Currently pursuing a Bachelor's degree in Mechanical Engineering or a related field.
  • Proficient in Microsoft Office Suite (Word, Excel, Outlook).
  • Experience with SolidWorks preferred.
  • Experience with Arena PLM software is a plus but not required.
  • Experience with GD&T (ASME Y14.5-2018) is a plus but not required.
  • Ability to demonstrate analytical problem solving.
  • Strong attention to detail and a willingness to learn.
  • Excellent communication and teamwork skills.
  • Self-motivated with the ability to manage time and tasks effectively.

Working Conditions

  • Most work will occur in a standard office setting (desk, computer, etc.) and engineering lab/testing areas (lab benches, test equipment, etc.).
  • Occasional travel to vendor or partner facilities may be required. Safety equipment (e.g., safety glasses, ESD protection) may be necessary in certain environments.

Physical Requirements

The employee is occasionally required to stand, walk and stoop, or crouch. The employee may need to lift and/or move up to 10 pounds. Specific vision abilities required by this job include close vision, distance vision, color vision, peripheral vision, depth perception and ability to adjust focus.

Physical Demands: The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

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