Engineering Intern - Manufacturing Engineer

Sellmark Corporation • Mansfield, TX

3d • Onsite

About The Position

The Manufacturing Engineering will support the Design & Development team by assisting with day-to-day tasks, project work, and cross-functional initiatives. This role is designed to provide hands-on experience, professional development, and exposure to core business operations within Sellmark.
The intern will work under the guidance of a designated supervisor and collaborate with team members to contribute to meaningful projects aligned with departmental goals. Responsibilities may include research, data analysis, documentation, administrative support, and participation in team meetings or ongoing initiatives.
This position offers an opportunity to develop practical skills, gain industry knowledge, and build professional competencies in areas such as communication, problem-solving, and teamwork. Internship program will run 12 weeks starting late May.

Requirements

• Currently enrolled in or recently graduated from an accredited college or university program relevant to Engineering, Design & Development.
• Strong interest in Engineering, Manufacturing, Production.
• Basic knowledge of Microsoft Office Suite (Excel, Word, PowerPoint); SolidWorks (required), Pro/Engineer / Creo (preferred), GD&T fundamentals (coursework or prior experience preferred).
• Excellent written and verbal communication skills.
• Strong organizational skills with attention to detail.
• Ability to manage multiple tasks and meet deadlines in a fast-paced environment.
• Demonstrated problem-solving skills and willingness to learn.
• Ability to work both independently and collaboratively within a team environment.
• Professional attitude with a high level of integrity and accountability.

Responsibilities

• Migrate CAD files from Pro/Engineer (Pro/E) to SolidWorks for the Inforce product line.
• Update existing drawings and models to current GD&T (Geometric Dimensioning & Tolerancing) standards.
• Develop and write work instructions for manufacturing processes and test equipment operation.
• Operate production test equipment and accurately record results.
• Analyze test data to identify trends, anomalies, or performance gaps.
• Support Root Cause Analysis (RCA) on production and quality issues.
• Assist in maintaining organized CAD file libraries and revision control.
• Collaborate with production and engineering teams to validate updated drawings against physical assemblies.
• Document process improvements and flag inconsistencies found during file migration.
• Capstone presentation at the conclusion of internship.
• Perform additional duties as required to support the department's effective operation.

Benefits

• Paid internship
• Professional development and learning opportunities
• Networking events and team engagement activities
• Receive hands-on training specific to the assigned department and role
• Work under the guidance of a designated supervisor and/or mentor
• Gain exposure to real-world projects, team meetings, and cross-functional collaboration
• Participate in job shadowing and skill-building opportunities as available
• Receive ongoing feedback and a final performance evaluation at the conclusion of the internship

What This Job Offers

• Career Level: Intern
• Education Level: No Education Listed
• Number of Employees: 11-50 employees