About

Mechanical Engineer in the Bay Area with experience in mechanism design, injection molding, and simulation

Skills

CATIA/ENOVIA Rapid prototyping Electromechanical design
SOLIDWORKS CNC machining Altium
ANSYS mechanical Injection molding Fixture design
Python Composites Reliability test design and instrumentation

Experience

Waymo, Senior Mechanical Engineer: 2018-2021

  • Due to increasing requirements on sensor range, resolution, and accuracy, fouling management became a critical component of the Waymo vehicles. I own the roof cleaning systems on multiple vehicle types, including nozzles, wipers, and system layout for lidar and surround view cameras.
  • To solve issues around increasing part count and manufacturing steps, I proposed a modifed sensor layout + structure for semi truck roof mounted sensor assembly. This design was accepted as plan of record.
  • Faced with long lead times and a lack of existing nozzles that were compatible with our vehicle packaging requirements, I developed injected molded geometry for shear nozzles with custom spray fan angles and spread.
  • Managed cleaning software features and specifications.
  • Managed DFM and assembly process flow to bring 5+ nozzles into production, including on-site support of tooling vendor.
  • Designed, validated, and patented a precision timed spray/puff solution to increase system efficiency for rotating sensors.
  • To reduce the risk associated with an open reliability issue, I designed and validated a manufacturing process to increase rigiditiy of the system while still allowing for lidar adjustment in a fully assembled state.

Loon, Mechanical Engineer: 2014-2018

  • In response to an open-ended request to extend super-pressure balloon life in the stratosphere, I designed and implemented a novel magnetic ballast that allowed ground control to automatically compensate for altitude loss due to helium leaks. On a low leak rate ballon, this system increased the lifespan of a balloon by months, greatly decreasing amortized system cost.
  • 30+ unique molded parts designed, analyzed, and implemented for various subsystems of the Loon flight system including balloon and payload.
  • In an effort to reduce payload structure assembly cost while maintaining excellent strength-to-weight ratio, I designed and validated several carbon-plastic adhesive interfaces.
  • Designed pneumatic systems and structures for payload handling during automatic balloon launching.
  • 20+ ANSYS simulation projects including structural FEA, modal, and buckling analysis.

SpaceX, Structural Engineer: 2013-2014

  • 6 month internship involving design, FEMAP/NASTRAN analysis, and manufacturing of spacecraft structures.
  • Designed and built several aluminum weldments and machined mounts for the interior of the Dragon spacecraft.

Stanford Solar Car Project, Stanford Undergraduate Research: 2013

  • Managed internal CNC machine and programmed/machined several components for the 2013 solar car.
  • FEA analysis of suspension and completed static structural analysis of a composite vehicle chassis including honeycomb Nomex core, ply number and orientation in ANSYS Composite PrepPost.

Education

  • Stanford University 2011-2013

Projects