Gerardo Sierra

Experience

1. Dimensional Systems Engineer

   General Motors

   May 2015 — Present

   Execute and support Virtual Analysis of product design and manufacturing processes to predict vehicle build variation- Responsible for Geometric Dimensioning and Tolerancing (GD & T) Template Development- Coordination of Global Strategic Dimensional Product RequirementsLead/support Advanced Vehicle Development of Program specific GD & T- Subject-Matter- Expert and mentor in the utilization and application of GD & T- Develop and deploy global dimensional engineering methods, processes, standards, and training- Responsible to identify and drive dimensional strategies and tolerance allocations to achieve Competitive Best-of-the-Best targets and Dimensional/Vehicle Technical Specifications requirements- Identify and define the initial dimensional requirements for purchased components and assemblies and document them in the Appendix F7 of the program Statement-of-Requirements- Documentation of In-Plant Assembly Dimensional Requirements to support DTS and functional interfaces (Control Datasets/Drawings)- Actively support the program specific datum coordination and verification of Checking Fixture/Gage execution- Support Vehicle Build and Issue resolution, as required

Education

• UNAM

  MS, Mechanical Engineering

  1994 — 1996

• UNAM

  BS, Mathematics

  1988 — 1992

Skills

• Vehicles
• Geometric Dimensioning & Tolerancing
• Mechanical Engineering
• Unigraphics
• Engineering
• Continuous Improvement
• Product Development
• Automotive
• Siemens Nx
• Lean Manufacturing
• Product Design
• Six Sigma
• Cad
• Dfmea
• Manufacturing
• Root Cause Analysis
• Production Part Approval Process (Ppap)
• Automotive Engineering
• Ppap
• Gd&T
• Nx Unigraphics
• Computer-Aided Design (Cad)
• Apqp