Sr. Molding Engineer

About Us

From a team that has been instrumental in the development of leading 3D printing and advanced manufacturing technologies comes the biggest development yet. At higher strength and lower density than titanium, carbon fiber composites hold the potential to change the world by unlocking novel design architectures that deliver unparalleled performance at lighter weights. Despite this potential, the complexity and cost of designing and manufacturing these anisotropic materials has limited their use to high-end, niche applications. Arris Composites has solved this problem and some of the top companies in the world have taken notice. New design latitude and improved performance provides competitive advantages for leaders across the industrial and consumer markets. Your view of composites is about to change.


Arris Composites is seeking an experienced mold design engineer with five or more years of experience with designing compression or injection molds for  R&D and/or production manufacturing.  You are a solution oriented with a knack for 3D thinking, experience building working molding systems, and a desire for elegance. You should be experienced in developing, prototyping and improving your designs in close collaboration with a skilled team.


  • Design, prototype and improve novel compression molds
  • Create detailed GD&T drawings for mold components
  • Hands-on prototyping, fabrication, and testing
  • Refine molding systems to meet specifications with high levels of repeatability and reliability
  • Work collaboratively with technical and non-technical team members to achieve shared goals.
  • CAD (Solidworks)
  • Estimate technical risk and time to complete tasks
  • Work with a multidisciplinary team in a dynamic work environment


  • Minimum BS in mechanical engineering.
  • 5+ years experience designing molding systems/equipment.
  • Excellent CAD skills including assemblies, tolerancing, drawings, BOMs   Solidworks preferred.
  • Good written and verbal communication skills. Communicate effectively with cross disciplinary experts to achieve interdependent objectives. You can sketch well enough to communicate complex ideas.
  • You have vision and can respectfully disagree when you see things differently than others. But you also can recognize when your concept isn’t the one that we’re moving forward with, and you can get 100 percent behind the new direction. You are respectful and thrive in a flat organizational structure.
  • Great references.


  • Benefits include health, vision, dental, and life insurance, and snacks including but not limited to peanut butter pretzels.


  • This position is in Berkeley, CA. It’s within walking distance to Amtrak, ~1.5 miles from BART, and ~ 1 mile from the Marina Ferry (direct from SF Ferry Building)

To apply

  • Please send your application to:
  • A short cover letter showing us that you have read this ad and are responding to our needs.
  • Your resume, in .pdf format.
  • Please be prepared to share a mechanical design portfolio, either with your emailed application or during the interview process.

Arris Composites, Inc. is an equal opportunity employer.