Professional Summary
Overview
Work History
Education
Skills
ADDITIONAL
Timeline

SEAN MISHLER

O'Reilly Auto Parts
Graham,TX
24
years of professional experience

Experienced operations and maintenance professional with over 20 years in equipment-dependent environments, specializing in preventive maintenance and repair of commercial kitchen equipment. Proven expertise in diagnosing and repairing mechanical, electrical, and computer-based systems in automotive settings. Focused on minimizing downtime, ensuring safety compliance, and training maintenance teams to enhance operational efficiency.

Work History

Retail Support Specialist (Keyholder)

2 Years 6 Months
O'Reilly Auto Parts | 02.2024 - 08.2026
  • Reduced parts-lookup errors and wait times for technicians and shops by mastering digital cataloging systems, improving service efficiency in high-volume counter environment.
  • Eliminated checkout downtime by independently diagnosing and repairing POS hardware and software faults, ensuring seamless customer transactions.
  • Closed out shifts with minimal cash-reconciliation discrepancies as store keyholder, demonstrating reliability and trust in handling Assistant Manager-level responsibilities.

GM Par-Tech Technical Support Agent

2 Months
Morely Inc. | 04.2024 - 06.2024
  • Corrected data discrepancies in enterprise digital parts catalogs before they reached technicians, protecting parts-order accuracy at scale.
  • Resolved dealership parts-catalog and lookup issues on first contact, reducing service disruptions for GM shops and technicians nationwide.
  • Maintained SLA compliance by efficiently logging and routing tickets through internal CRM during peak call volume.
  • Managed part-time remote role alongside responsibilities at O'Reilly.

Automotive Service Technician

5 Months
Walmart | 09.2023 - 02.2024
  • Diagnosed and resolved vehicle issues for customers using computerized diagnostic equipment, maintaining a strong first-time-fix rate.
  • Enhanced technician handoff accuracy through standardized digital logging of maintenance tasks and service records.
  • Minimized comeback repairs by providing customers with accurate service recommendations based on diagnostic findings.

General Manager

21 Years 1 Month
Sonic Drive-In | 07.2002 - 08.2023
  • Maintained commercial kitchen equipment (fryers, grills, refrigeration) with less than 5% unplanned downtime over 20+ years through a proactive preventive-maintenance and repair schedule.
  • Analyzed P&L and POS data weekly to identify and correct operational inefficiencies, contributing to sustained cost reduction.
  • Passed 15+ consecutive federal and state food-safety inspections with minimal critical violations by owning compliance procedures end-to-end.
  • Built and trained a 20+ person team from the ground up, establishing comprehensive operating procedures for new hires.

Education

No Degree - Cybersecurity Certificate — NEXUS Program

University of Michigan Engineering | Online Courses | 11-2023

High School Diploma

Robert E. Lee High School | Midland, TX | 05-2001

Skills

Digital catalog management
Equipment Diagnostics & Troubleshooting
Computer-Based Systems
Preventive & Corrective Maintenance
Calibration & Repair/Replacement
Regulatory compliance
Inventory Management
Record management
Team Training & Instruction
Collaborative Problem-Solving
Effective Oral & Written Communication

ADDITIONAL

  • Authorized to work in the U.S.
  • Available for POSS/MASS testing

Timeline

GM Par-Tech Technical Support Agent

Morely Inc.
04.2024 - 06.2024Read More

Retail Support Specialist (Keyholder)

O'Reilly Auto Parts
02.2024 - 08.2026Read More

Automotive Service Technician

Walmart
09.2023 - 02.2024Read More

General Manager

Sonic Drive-In
07.2002 - 08.2023Read More

University of Michigan Engineering

No Degree from Cybersecurity Certificate — NEXUS Program
Read More

Robert E. Lee High School

High School Diploma
Read More
SEAN MISHLER