Sr. Staff Design Engineer

• Jul 2021 - Present

Staff Design Engineer

• Mar 2018 - Jul 2021

Recruited as the mechanical design lead that developed and delivered on two highly complex electromechanical mechanism for the Loon payload. These sub-systems were critical for increased steering capabilities and allowed communication from balloon to balloon or balloon to ground. Key Accomplishments • Successfully completed a fully functional production complex lateral propulsion steering mechanism within 1 year with a 15 member team that met the mass target, reliability specifications, and schedule • Reengineered the legacy Radio Frequency (RF) gimbal within a 9 month time frame along with reducing the total mass by 100 grams, increased motor bearing load capacities by 2X safety factor, and drastically decreased the assembly time at the Contract Manufacture by 25% (reduce total assembly time to 112 from 150 minutes) • Reengineered a custom electric motor with the same load capacity with a different motor vendor that resulted in a motor efficiency over 90% (10-15 Watt savings at max power) and reduced the motor cost at production quantities by 64% ($3200 cost decrease) • Successfully completed a mechanical tolerance stack up on the RF radio enclosure for the legacy gimbal by using CETOL Tolerance Software that increased the assembly yield from 90% to 99% • Calculated all loads on motors and gearbox then analyzed these by inputting them into ORBIS Bearing Software to size proper bearings for the loads on these assemblies, choose lubrication for the extreme environment, and preloads to meet the reliability/performance specifications • Recognized across the company by peers and leadership as the design lead for the lateral propulsion steering project above

Staff Design Engineer

• Mar 2018 - Jul 2018

Principal Design Engineer

• Oct 2017 - Feb 2018

Senior Staff Design Engineer

• Sep 2014 - Sep 2017

Mechanical design lead that helped bring early frame concepts to full commercial lunch of the first post free hip distractor. The Pivot Guardian Distraction System was the first to market for hip arthroscopy.Key Accomplishments• Consulted with surgeons by observing in the OR to understand the design needs for the hip distractor and how device is used during a hip arthroscopy case • Collaborated with CM to get an understanding design methods to attaching aluminum inserts into carbon fiber members• Executed on the designs for most of the mechanism on the frame and base plate that integrated with various operating tables • Performed a series of FEA studies with the use of ANSYS mechanical to aid in component sizing• Awarded the Stryker’s Sports Medicine MVP of the month in January 2016 for my work on this project

Staff Design Engineer

• Apr 2013 - Aug 2014

Technical lead design engineer/project manager for the Crossblade shaver handpiece which successfully completed functional prototypes with testing results showing 3X more reliable product than legacy handpiece. Other benefits beyond performance testing showed reduced mass, better ergonomics, ease of cleaning, and quicker assembly times.Key Accomplishments• Consulted with industrial engineering, at project inception, to gain large joint shaver usage information by creating a matrix of various grip styles, observing cases in the operating room and obtaining feedback from surgeons• Collaborated with chief engineers cross-divisionally along with gear train vendor on two different planetary gearbox design concepts for prototypes of 5:1 and 6:1 gear ratio gearboxes in order to reduce noise and assembly time along with increasing the reliability of the unit by researching better bearings and seals • Successfully completed two of the shaver components which included prototyping stages using a 3D metal printing process before the part design was introduced to Metal Injection Molding (MIM) for production which resulted in an overall 70% manufacturing cost reduction • Reengineered the legacy electric motor to increase reliability and reduce the noise by selecting different bearings and getting a more repeatable concentricity during assembly between the front and rear rotor shaft bearings• Designed a Liquid Silicone Rubber (LSR) multi-color insert molded keypad to protect electronics sterilization which had a unique mechanical latching mechanism to snap onto shaver housing with IP filed around this snap in mechanism • Completed tolerance design stack up for mechanical clearances, O-ring compression, and press fits for the complete shaver assembly• Awarded the Stryker’s Sports Medicine MVP of the month in February 2015 for my work on this project

Associate Staff Design Engineer

• Mar 2011 - Mar 2013

Mechanical design lead for the 1488 Endoscopic Camera heads for all four models taking them to full commercial launch Key Accomplishments• Designed the 1488 rear camera enclosure that allowed it to be a one-step machining process instead of a two like our legacy camera enclosures are, thus saving about 20 minutes of cycle time plus eliminated the labor need for the extra operation step up • Designed insert compression molded EDPM rubber keypads for both 2 and 4 button camera heads with poka-yoke features

Senior Design Engineer

• Oct 2009 - Feb 2011

Prototype mechanical wireless devices concepts and researched battery technology for high temperature sterilization Key Accomplishments• Successfully completed a functional wireless prototype light clip for endoscope by using an LED and lithium iron phosphate rechargeable battery • Co-developed with electrical engineer to create the first wireless Chip on a Tip (COT) flexible endoscope functional prototype at Stryker Endoscopy

Senior Design Engineer

• Jul 2008 - Sep 2009

Supported mechanical designs for the powertrain group on the Joint Light Tactical Vehicle which was the 2nd generation of the Humvee and Mine Resistant Ambush Protection All Terrain trucks for the United States Army and Navy Key Accomplishments • Provided critical production designs for many power train components for both vehicles such as rear split boots, front drive shafts, transmission and transfer case dipsticks, along with sheet metal holding brackets for coolant lines • Redesigned heavy air front end accessory drive compressor bracket by reducing weight by 15lbs, increased its modal frequency from 60 Hz to 160 Hz, along with decreasing the installation time by 50%

Process Engineer

• Aug 2001 - Jun 2008

Led the microwave step attenuator reliability improvement project that will increase annual sales by $450,000 Defined a new plating scheme for the electrical contacts so they withstand rapid mechanical cycling rates Failures reduced from 20,000 per 100,000 cycles to 150 failures per million Eliminated chemical etching masks that were contaminating the plating bath by implementing a dry plating fixture Redesigned the contact geometries to reduce fretting, de-lamination, and impact wear Communicated with internal business unit mangers and external Vice President of engineering Tracked tasks and schedule using Microsoft Project Served as a company wide technical resource in the following areas: machining techniques, sheet metal fabrication, selection of process equipment, material selection, gold wire / ribbon bonding, plating science, and soldering alloy selection for ROHS compliance Collaborated with project managers, design engineers, executive management, machinists, technicians, vendors, and assemblers to coordinate project logistics Machined complex parts with high precision tolerance using (manual lathe, manual mill, CNC vertical mill machine setup and programming)