John Pruyn
Global rank:
5,336 / 25,779
Skill pts: 5
ANSYS Discovery AIM CAD Design PTC Creo Direct SolidWorks
Experienced product/machinery/tooling mechanical engineer. Well suited for clients needing expert level contribution of approximately 10 hours per week.


  • Senior Mechanical Engineer Various Oct 1998 – Present 21 yrs 1 mos 22 years Experience • Licensed PE in Washington, 49981 • Precision Machine Design – Motion systems, mechanisms, bearings, powertrains and gearing, tolerance studies and GD&T, materials and finish selection • Product Design – machined, progressive die sheet metal and plastic injection molding design • Analysis – frequent solver of FEA, CFD, kinematic, static, dynamic, structural, fatigue, thermal-fluids and control problems using SolidWorks COSMOS, Matlab/GNU Octave and Excel • System Optimization – Skilled at conducting studies to discover optimal electro-mechanical product architectures • CAD & PDM –Fluent in SolidWorks, Ansys, Creo Elements Direct, PDM, and Model Manager • Printing Systems - 15 years design of 2D & 3D digital printing with emphasis in high volume product design of media handling and precision automated test bed development. Key contributions in power transmission design, high performance / low cost designs, and system architecture • Energy Systems – System design of a 15 kW hydro turbine for in-conduit energy recovery; utility scale solar concentrating systems; 10 kW Horizontal axis wind turbine; solar PV thermal tracking device; heat transfer analysis on melting of waste plastic • Opto-Mechanical Systems – semi-conductor and fiber laser system design, laser weld fixturing, solar concentrator reflector array design, precision laser measurement devices and integrated 3 axis laser processing system and integration into a scaled up production station; architecture of a 360° camera module; • Life Sciences – endo-surgical instrument development, research equipment (QPCR), lab on chip manufacturing tools, design and experimental validation for a patient operation dried blood spot collection device for patient monitoring • Industrial Automation – Automated QC equipment; custom heat staking tooling; thermal process control for a continuous plating line. Precision design automotive production machine tools; food packaging automation


  • University of Cincinnati MSME 1996 – 1998
  • University of Cincinnati BSME 1991 – 1996

Licenses & Certifications

  • Professional Engineer State of Washington Feb 2018 – Apr 2020


Portland, OR, United States