Hi! I'm John Rehagen. Welcome to my website.
The best way to describe me is as the most mechanical-engineering-oriented industrial engineer you've ever met! My work experience shows it...
I've designed and optimized robotic manufacturing lines for EVs at Rivian, led rapid prototyping, benchmarking, failure mode analysis, and manufacturability studies for retail products, and designed and manufactured components of hybrid rocket engines
I love thinking big picture, working from first principles and collaborating with teams to solve hard problems.
Feel free to browse my work experience and projects. If you have a role you think I may be interested in, please contact me at [email protected]
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Manufacturing Engineering Co-op
Rivian Automotive - Body Tophat
Working to improve vehicle design for manufacturability, rebalance and improve existing manufacturing systems and evaluate business cases for addition of manufacturing automation to increase vehicle build rate and quality.
Vehicle Structures Design and MFG
TAMU Sounding Rocketry Team
Responsible for the design, manufacturing, and testing of components for a 30,000 ft-class hybrid composite rocket airframe to compete in the Intercollegiate Rocket Engineering Competition (IREC).
Spearheaded rocket bulkhead design and manufacturing, rocket-tower integration and pressure vessel integration.
Exploring Metal 3D printed bulkhead components to remove constraints of manufacturing and enable continued design evolution.
Testing and benchmarking new composite manufacturing processes for future rockets, focusing on filament carbon fiber tubes, future pressure vessels and characterizing anisotropic forged carbon fiber parts.
Mechanical Engineering Intern - Testing
Vex Robotics
Designed, ran, and analyzed scientific tests to validate product function and define defect tolerances.
Standardized testing practices by writing technical manual and created quick start data analysis templates.
Led multiple projects from the initial ideation and pathfinding phases to multi-iteration design and full-scale production and distribution.
Mechanical Engineering Intern - Design
Vex Robotics
Used Solidworks to prototype and finalize the design of injection molded parts in a rapid development cycle (Injection Molding DFM).
Led the initial ideation and pathfinding of two retail projects in an ambiguous, fast paced environment.
Completed two additional retail projects to be sold at big box retailers.
Student Machinist
TAMU Engineering Design Center
Expanded knowledge of DFM and manufacturing skills using many types of machines to manufacture parts for student projects and university research. Gained experience creating engineering fabrication drawings and exposure to GD&T principles. Taught TAs and students machining principles and safety for MEEN 361.
Director of Development
Tamu FREE - "Freshmen Reaching Excellence in Engineering"
FREE is a 50% professional 50% social organization that connects freshmen so they can grow as students and future engineers. It is the primary leadership organization for freshmen engineers at Texas A&M.
Helped to plan social events for an organization of >100 people. Used python and google sheets API to automate a bi-weekly sort and assignment operation. Led the Big & Little program comprised of >170 people and participation in philantrophy supporting Habitat for Humanity
Team Captain & Head of Design
FIRST Robotics - 6672 Fusion Corps
Led a team of 40 to raise an annual budget of ~$45,000 and compete in a 10 week global competition. Self-taught CAD, CAM and CNC manufacturing and transformed team manufacturing capability.
More Projects coming soon...