ESCHER* Mechanical team lead for DARPA Robotics Challenge (DRC) team* Coordinated mechatronic assembly of ESCHER to meet rapid development deadline* Derived new decoupled kinematic model for ball screw-driven series elastic actuators* Retrofitted custom linear series elastic actuators from THOR to integrate with upgraded robot* Developed and maintained lab CAD guidelines for design collaboration and version control

THOR• Designed, manufactured, and tested high-power linear series elastic actuators (SEAs) for legs• Designed and manufactured a novel straight-line mechanism to achieve a human-like range of motion with a near constant mechanical advantage in the knee and hip pitch joints * Developed modular actuator test stand for robust tuning of actuator controls• Coordinated with component manufacturers and machine shops to outsource parts for the robot• Assisted with assembly, wiring, bug fixing, biasing, performance tuning, and stand/walk testing* Orchestrated lab work as scrum master for mechanical design teamSAFFiR• Manufactured components to maintain project schedule• Assisted biasing, performance tuning, and walk testingCHARLI• Manufactured, assembled, and tested several CHARLI robots including servo upgrades and component redesign to ease manufacturing burden• Programmed and operated robot for demos, including walk performance tuning, creation of new upper body motions, and dancing to "Gangnam Style"• Trained undergraduate and graduate students to be robot operators• Robot handler at 2012 RoboCup, the international autonomous robotic soccer competitionMiscellaneous• Assisted development of standard machining practices and a CAD/CAM training program• Advised two lab-funded senior design teams• Coordinated lab tours for prospective and current students, large groups, and VIPs• Tested robots at high-profile competitions and demonstrations around the world

DARwIn-HP* Redesigned skeletal structure to incorporate more powerful actuators* Manufactured and assembled several HP units for distribution to partner universitiesDARwIn-OP• Created fabrication, assembly, and wiring documents released under Creative Commons license to support open platform nature of DARwIn-OP• Designed and fabricated underactuated gripping mechanism for DARwIn-OP and presented the results at the 2011 IDETC Undergraduate Robotic Design Competition• Assisted with the development of the DARwIn Ambassadors program: a team of undergraduate volunteers to handle demonstrations and maintenance of the DARwIn platforms• Assisted with fabrication, assembly, wiring, and coding of a DARwIn-OP• Assembled previous 4 versions of DARwIn using inexpensive motor blanks for a static displayManufacturing• Developed accurate and precise method for locating and aligning large metal sheets for two-sided machining operations• Created custom Siemens NX CAD/CAM postprocessors to integrate with lab CNC machines• Modified Bridgeport 3-axis CNC parameters to correctly interpret postprocessed G-code

• Performed mechanical analysis of nuclear waste container lift lugs to test for brittle failure and verified through FEA• Updated and revised Standard Operating Procedures for nuclear reactor overhaul and refueling

• Developed an extensive interactive database using VBA to track the skills and training required of Laborers, Foremen, and General Foremen• Personally presented the database to several Vice Presidents to gain support for further development and integration to existing shipyard databases• Continued database development through Virginia Tech's Corporate Research Center (CRC)

• Assembly of custom automated wire spooler from CAD model and BOM• CAD of electric schematics for programmable logic controller (PLC) for spiral conveyor• Assembly of PLCs from wiring diagrams to operate automated spooler

• Painter on U.S.S. Bush aircraft carrier nuclear propulsion plant.