Summary
Overview
Work History
Education
Skills
Certification
Languages
Timeline
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Lorens Diaz

Lorens Diaz

Ferris,USA

Summary

Detail-oriented and seasoned Automotive and Truck Technician/Manager with over 28 years of hands-on experience in diagnostics, repair, preventive maintenance, and technician management. Proven ability to oversee service shops and mobile fleet teams while maintaining exceptional standards of customer service and operational efficiency. Committed to leveraging technical expertise and leadership skills to drive success in a dynamic, growth-oriented environment. Passionate about fostering team collaboration and enhancing service delivery to exceed customer expectations.

Overview

12
12
years of professional experience
1
1
Certification

Work History

Senior Sales Manager

Fleet Repair Solutions
11.2025 - Current
  • Prepared and presented Truck and Trailer body repair estimates for customer review and approval
  • Liaised with parts vendors to gather pricing information for estimate preparation.
  • Grew revenue within existing accounts through consistent follow-up and relationship management
  • Ensured all sales activities aligned with company body repair standard specifications
  • Prospected and developed new business through cold calls, mailers, line cards, and onsite visits
  • Conducted thorough pre- and post-repair unit inspections to ensure quality and accuracy
  • Built and maintained strong customer relationships, driving repeat business and increased loyalty
  • Increased sales by proactively engaging customers and effectively addressing customer needs

Salesperson

North Central Truck and Trailer Repair
06.2025 - 11.2025
  • Prepared and presented Truck and Trailer body repair estimates for customer review and approval
  • Liaised with parts vendors to gather pricing information for estimate preparation.
  • Grew revenue within existing accounts through consistent follow-up and relationship management
  • Ensured all sales activities aligned with company body repair standard specifications
  • Prospected and developed new business through cold calls, mailers, line cards, and onsite visits
  • Conducted thorough pre- and post-repair unit inspections to ensure quality and accuracy
  • Built and maintained strong customer relationships, driving repeat business and increased loyalty
  • Increased sales by proactively engaging customers and effectively addressing customer needs

Operations Manager

Transport Refrigeration Services
06.2023 - 06.2025
  • Oversaw Walmart truck,trailer and reefer maintenance operations
  • Led and oversaw Parts Department and administrative operations, improving efficiency, accuracy, and cross-department coordination.
  • Achieved higher employee retention rates by fostering a positive work environment and providing opportunities for professional growth.
  • Developed strong relationships with vendors, resulting in better pricing and improved service quality.
  • Trained and guided team members to maintain high productivity and performance metrics.
  • Tracked employee attendance and punctuality, addressing repeat problems quickly to prevent long-term habits.
  • Negotiated price and service with customers and vendors to decrease expenses and increase profit.
  • Evaluated technician performance and implemented training initiatives
  • Developed and maintained preventive maintenance schedules for trucks, trailers, yard tractors, and refrigeration units
  • Led hiring, onboarding and training of new hires to fulfill business requirements.
  • Supervised operations staff and kept employees compliant with company policies and procedures.

Mobile Fleet Technician / Manager

Cox Mobility Fleet Services
01.2018 - 06.2023

LEAD TECHNICIAN ROLE - 1ST YEAR

  • Performed maintenance and diagnostic repairs on light and heavy duty vehicles
  • Reduced downtime for vehicles by promptly diagnosing and repairing mechanical issues
  • Collaborated closely with dispatch teams to coordinate scheduled maintenance appointments
  • Provided technical guidance to junior technicians on complex repair tasks or diagnostics as needed
  • Responded to emergency road calls and field repairs with efficiency and professionalism

MANAGER ROLE: 2ND - 5TH YEARS

  • Managed mobile service operations across assigned service areas
  • Managed technician leadership, training, and performance development
  • Managed dispatching, scheduling, and job prioritization
  • Managed fleet maintenance and trailer repair activities
  • Managed customer relationships and service communications
  • Managed quality control and safety compliance standards
  • Managed parts and inventory management for mobile units
  • Managed KPI tracking, productivity metrics, and reporting
  • Managed cost control initiatives and efficiency improvements

Reconditioning Manager

RML Auto Group
05.2016 - 01.2018
  • Directed all vehicle reconditioning operations, including detailing, repairs, body work, and inspections
  • Scheduled and managed reconditioning technicians, detailers, and support staff
  • Implemented process improvements to optimize throughput and minimize downtime
  • Monitored inventory levels, quality metrics, turnaround times, and costs
  • Trained and mentored staff to sustain productivity and quality standards
  • Coordinated reconditioning priorities with sales, service, and procurement departments
  • Managed vendor relationships for outsourced services such as body, glass, and upholstery work

Manager / Lead Technician

Walton Total Car Care
08.2014 - 05.2016
  • Diagnosed and repaired all makes and models of vehicles
  • Managed work orders, estimates, and inventory control
  • Oversaw customer interactions, sales, and daily shop operations

Education

Automotive Technician Program - Automotive Technologies

Lincoln Technical Institute
Grand Prarie
01.2000

High School Diploma -

Centennial Academy
01.1998

Skills

  • In-depth understanding of automotive heavy truck and trailer systems
  • Fleet management expertise
  • Customer service excellence
  • Comprehensive repair and maintenance skills
  • Experience with fleet management software
  • Business growth and retention

Certification

  • Master Mercedes-Benz Certification
  • Toyota Certified Technician
  • ASE Certified

Languages

Spanish
Professional Working

Timeline

Senior Sales Manager

Fleet Repair Solutions
11.2025 - Current

Salesperson

North Central Truck and Trailer Repair
06.2025 - 11.2025

Operations Manager

Transport Refrigeration Services
06.2023 - 06.2025

Mobile Fleet Technician / Manager

Cox Mobility Fleet Services
01.2018 - 06.2023

Reconditioning Manager

RML Auto Group
05.2016 - 01.2018

Manager / Lead Technician

Walton Total Car Care
08.2014 - 05.2016

Automotive Technician Program - Automotive Technologies

Lincoln Technical Institute

High School Diploma -

Centennial Academy