Summary
Overview
Work History
Education
Skills
Certification
Timeline
Generic

Ryan Dietz

Greenville,SC

Summary

Dynamic Supplier Quality Engineering professional with extensive experience at Proterra, driving continuous improvement and achieving a 90% reduction in defect rates. Proven expertise in 8D/RCCA methodology and team leadership, fostering collaboration and enhancing supplier performance through data analysis and project management. Committed to delivering quality and sustainability compliance in fast-paced environment supply chain organization in the battery market.

Overview

5
5
years of professional experience
1
1
Certification

Work History

Sr. Supervisor, Supplier Quality Engineering

Proterra Powered LLC
02.2025 - Current
  • Recruited, hired and trained staff and provided ongoing feedback and performance evaluations for development.
  • Managed the supplier quality assurance for our supply chain overseeing 700+ unique SKUs and managed multiple inspectors across 2 shifts.
  • Enhanced team productivity by implementing efficient workflow processes and providing consistent guidance.
  • Led the change control process for supplier quality and PPAP process for our supply chain by automating both systems.
  • Worked alongside strategic sourcing and design engineering through product launches and design improvements on prototype parts.
  • Implemented Skip-Lot AQL inspections in our Oracle ERP systems that enhanced our ability to avoid risk with component level parts identifying 78 non-compliances.
  • Conducted thorough 8D processes with our adhesive supplier to resolve a complex production issue at our facility.
  • Working alongside our sustainability contract group through CDX, IMDS, REACH, PROP 65, and CMRT with components supplied by our suppliers.

Sr. Supplier Development Engineer

Proterra Powered LLC
10.2023 - 02.2025
  • Developed detailed technical documentation to support product launches, facilitating smooth transitions from development to production stages for plastic injection molded parts.
  • Worked through PPAP processes with suppliers in India, China, Taiwan, USA, and Germany ranging from PCBA's, extrusions, machining, plastic injection molding, and harnesses.
  • Facilitated customer specification requests/failures to resolve field quality issues that stemmed from suppliers through their Tier 4 suppliers.
  • Led continuous improvement initiatives within the multiple departments across the company saving $250k annually by creating automated systems for work management, project management, supplier performance tracking, and inventory/forecast tracking.

Sr. Supplier Quality Engineer III

Proterra Inc.
05.2023 - 10.2023
  • Managed a team of supplier quality inspectors responsible for incoming inspection for all of 70+ suppliers.
  • Conducted supplier assessments, identifying gaps and non-conformances while collaborating with suppliers to implement effective corrective actions.
  • Spearheaded cross-functional teams in root cause analysis investigations for major suppliers-related to PCBAs.
  • Led DFM reviews with suppliers during the APQP/PPAP process for aluminum enclosure components.
  • Project managed multiple long term quality projects, which included IT systems, supplier development, lot control, automated inspections and more.

Supplier Quality Engineer II

Proterra Inc.
05.2022 - 05.2023
  • Designed an incoming inspection area for a new manufacturing plant using capital funds while collaborating with cross-functional teams.
  • Resolved over 127 non-conforming reports with over 24 suppliers.
  • Established a data-driven approach for supplier performance evaluations, utilizing automated KPI's to monitor trends among suppliers.
  • Led APQP/PPAP development projects with current and new suppliers for harnesses, enclosures, metal fabrication, and welded assembled components.
  • Designed and implemented 7+ automated systems for reporting and project management from multiple systems and migrating them into one.
  • Nominated by Smartsheet to be among the top 5% of users globally for the number of automations implemented.
  • Led process audits and ISO 9001:2015 audits at suppliers as well as creating documentation for IATF 16949.
  • Hosted auditors at our facility for IATF 16949 and ISO 9001:2015 audits and co-lead them for the supplier quality department.

Supplier Quality Engineer

Proterra Inc.
07.2020 - 05.2022
  • Managed a NHTSA recall campaign across North America with our customers and within our manufacturing facilities.
  • Maintained relationships with key advanced composite suppliers and steering column, fostering long-term partnerships that benefited both parties involved.
  • Successfully resolved complex supplier disputes, critical safety issues, and negotiating solutions that aligned with quality standards and production timelines.
  • Analyzed complex defect data on critical components to decrease supplier defect rates by 90%.
  • Automated inspection and rework tracking on our production line to increase throughput and minimize downtime from supplier related problems.
  • Lead rework initiatives across both of our manufacturing plants to automatically prioritize hundreds of defects to repair on composite transit buses.

Education

Industrial Engineering

Clemson University
Clemson, SC
05-2020

Skills

  • 8D/RCCA Methodology
  • GD&T
  • Smartsheet / Tableau / PowerBI
  • Lean Six Sigma Green Belt
  • Project Management
  • Team Leadership, Mentorship, and Staff Development
  • Negotiation and Conflict Resolution
  • Continuous Improvement
  • Data Analysis
  • Supplier Performance Management
  • Risk Management
  • Compliance
  • Budget Management
  • APQP/PPAP

Certification

  • Lean Six Sigma Green Belt
  • Certified in People Management from University of London

Timeline

Sr. Supervisor, Supplier Quality Engineering

Proterra Powered LLC
02.2025 - Current

Sr. Supplier Development Engineer

Proterra Powered LLC
10.2023 - 02.2025

Sr. Supplier Quality Engineer III

Proterra Inc.
05.2023 - 10.2023

Supplier Quality Engineer II

Proterra Inc.
05.2022 - 05.2023

Supplier Quality Engineer

Proterra Inc.
07.2020 - 05.2022

Industrial Engineering

Clemson University

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