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Re:Build Manufacturing

Tech-enabled, high-value industrial manufacturing services

Research and Development Composites Molding Engineer

Manufacturing EngineeringConfirmed live in the last 24 hours
Full-timeCommerce City, CO, USA

About the Job

Requirements

  • A bachelor's degree in Mechanical Engineering, Materials Engineering, Plastics Engineering, or a related engineering discipline.
  • At least 5 years of thermoplastic processing experience, including thermoforming, injection molding, compression molding, or thermoplastic composites.
  • Proficiency in SolidWorks for 3D modeling and tooling design.
  • Hands-on experience working with molds and molding equipment.
  • Strong understanding of thermoplastic materials and processing parameters.
  • Experience in process development and prototyping.
  • Experience in tooling design and modification.
  • Ability to troubleshoot complex process and equipment issues.
  • Experience managing multiple projects independently.

Responsibilities

  • Develop and advance thermoplastic molding processes for research and development applications.
  • Design prototype tooling and molds using SolidWorks.
  • Research and evaluate new tooling technologies and molding methods.
  • Provide hands-on support during prototype builds, troubleshooting molds and molding equipment.
  • Lead new process development and qualification activities.
  • Manage multiple concurrent research and development composites projects independently.
  • Test and validate prototype tooling and process parameters.
  • Collaborate with engineering and technical staff across Re:Build sites.
  • Coordinate with external vendors and suppliers for materials, tooling, and services.
  • Document research and development processes, test results, specifications, and best practices.

Desired Qualifications

  • At least 10 years of thermoplastic processing experience.
  • Experience with multiple thermoplastic processes, including thermoforming, injection molding, compression molding, and thermoplastic composites.
  • Prototype mold design experience.
  • Material science or polymer engineering background.
  • Experience in research and development or advanced manufacturing environments.
  • Finite element analysis or simulation analysis experience.
  • Experience with emerging composites technologies.

About the Company

Re:Build Manufacturing

Tech-enabled, high-value industrial manufacturing services

Rebuild Manufacturing provides high-value production services for traditional industrial settings by applying enabling technologies and modern practices to improve efficiency, flexibility, and quality. The company works by integrating advanced digital tools, processes, and management methods across its manufacturing and engineering-focused operations to enable rapid order fulfillment and customization at scale. It differentiates itself from competitors by combining technical execution with a clear social mission: rebuilding America’s manufacturing base, creating sustainable local jobs in regions hit by deindustrialization, and emphasizing environmental stewardship. The ultimate goal is to revitalize the U.S. manufacturing sector while delivering reliable, high-quality production that supports local communities and long-term economic value.

Company size
1,001-5,000
Company stage
Late Stage VC
Total funding
$2.2B
Headquarters
Waltham, MA
Founded
2020

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