Mechanical Engineer - Additive Manufacturing / 3D Printing

About the Opportunity

DynaFlex is seeking a hands-on engineer to lead and improve our nylon and metal 3D printing operations. We manufacture orthodontic and oral appliances, combining skilled craftsmanship with advanced manufacturing technology.

In this role, you will oversee daily printing operations, troubleshoot equipment and production issues, improve manufacturing processes, and help our technicians produce consistent, high-quality parts. You will work closely with our Production, CAD, and Quality teams and report to the Vice President of Operations.

If you enjoy working directly with equipment, solving problems, and seeing your improvements make a measurable difference, we would like to hear from you.

What You’ll Do

• Oversee daily nylon and metal 3D printing operations, including build preparation, printing, and post-processing.
• Coordinate production priorities and workflow to meet quality standards and delivery deadlines.
• Improve build orientation, nesting, material usage, and approved process settings to increase efficiency and consistency.
• Troubleshoot failed builds, equipment issues, and variations in printed parts.
• Coordinate preventive maintenance, calibration, repairs, and equipment supplier support.
• Train and mentor technicians in equipment operation, material handling, troubleshooting, and safe work practices.
• Develop and maintain standard operating procedures and production documentation.
• Monitor output, scrap, rework, downtime, and cost per part to identify improvement opportunities.
• Work with CAD and Quality teams to investigate defects, identify root causes, and implement corrective actions.
• Evaluate new materials, equipment, software, and processes to support future growth.
• Maintain accurate records supporting material traceability, equipment performance, and consistent production.

What We’re Looking For

• Bachelor’s degree in Mechanical Engineering, Manufacturing Engineering, Materials Science, or a related engineering field.
• At least three years of manufacturing or process engineering experience, including hands-on experience with industrial additive manufacturing.
• Experience with nylon or metal 3D printing; direct experience with both is strongly preferred.
• Proficiency with 3D CAD and build preparation software.
• Ability to interpret engineering drawings, tolerances, and product specifications.
• Strong mechanical troubleshooting, analytical, and problem-solving skills.
• Ability to train technicians, communicate clearly, and collaborate across departments.
• A practical approach to improving quality, reducing waste, and increasing equipment reliability.
• Strong organizational skills and the ability to balance daily production needs with improvement projects.

Preferred Experience

• Dental, orthodontic, or medical device manufacturing.
• Powder-based printing systems and associated post-processing equipment.
• Quality management systems, process validation, and controlled documentation.
• Lean manufacturing, root cause analysis, and continuous improvement.

Work Environment

This position works on-site at our Lake St. Louis facility and combines engineering work with hands-on involvement in production. Responsibilities include handling small components, using tools and inspection equipment, sitting or standing for extended periods, and lifting up to 25 pounds. Required personal protective equipment and material-handling procedures must be followed.

Benefits

DynaFlex offers medical, dental, and vision coverage; a 401(k) plan with company match; paid time off; and company-paid life insurance, sub

DynaFlex is a leading manufacturer of orthodontic and sleep apnea devices used by doctors and clinicians around the world. Our products are trusted globally because of our commitment to quality, precision, and continuous improvement.

We combine advanced technology with hands-on craftsmanship, using modern manufacturing techniques to produce high-quality, customized devices every day.

At DynaFlex, you’ll be part of a team that takes pride in its work. Our employees play a direct role in creating products that support patient care, even if they’re not working in a clinical setting.

With over 200 employees and a growing operation, we offer a stable, team-oriented environment where you can develop specialized skills and build a long-term career.