Mario Contreras Gonzalez
Jacksonville,NC
Work Preference
Summary
Dedicated Marine Corps veteran with over 13 years of experience in vehicle maintenance supervision and personnel management. Proven track record in mentoring and developing team members, resulting in significant improvements in performance and productivity. Expertise in adapting to dynamic environments and strategically adjusting approaches to meet objectives. Recognized for exceptional conflict resolution skills and the ability to foster a collaborative and positive workplace culture.
Overview
14
14
years of professional experience
5
5
Certification
Work History
Warehouse Specialist
MANCON
08.2025 - Current
- Managed storage area by organizing floor space, adhering to storage design principles and recommending improvements.
- Supported safe operations of warehouse order fulfillment and restocking by securing items on pallets and shelves.
- Loaded and unloaded items from and to shipping containers and vessels.
- Operated forklifts, pallet jacks and other equipment to move materials for over 800 hours accident free.
- Helped keep inventory accuracy at 100% by overseeing daily cycle counts.
- Verified $325,485 worth of items received in orders and cross-checked with invoices.
- Assisted in receiving, stocking and distribution of merchandise.
Personnel Manager
United States Marine Corps
05.2022 - 07.2025
- Diligently supervised and trained coworkers, fostering a culture of safety and maintaining impeccable standards, resulting in zero workplace accidents or incidents.
- Provided vital real time reports that enable management to make informed decisions, contributing to the success of mission objectives
- Spearheaded comprehensive safety training program, empowered coworkers to work safely and maintain high standards, resulting in 15% reduction in workplace incidents and injuries.
- Developed and implemented a successful on boarding and mentoring program, resulting in an increase of 25% employee retention rate in 6 months.
- Collaborated with legal and compliance teams to review paperwork, obtain feedback, and procure available information for new training processes.
Vehicle maintenance supervisor
United States Marine Corps
10.2018 - 05.2022
- Revised and implemented new maintenance procedures, resulting in a 20% reduction in vehicle breakdowns
- Successfully implemented new training standards, which resulted in a 15% reduction in vehicle maintenance turnarounds times.
- Effectively managed a team of 74 across 4 different sites, resulting in an increase in worker productivity.
- Created an inspection checklist for a fleet worth $10,000,000, allowing the company to achieve all set objectives without fail
- Monitored safety compliance to maintain strict standards and protect team members from harm.
- Monitored priorities and liaised between maintenance team and management, delegating tasks to complete on time.
Quality Control Inspector
United States Marine Corps
10.2016 - 10.2018
- Identified defective products and found a solution, resulting in saving the organization $200,000 in 4 months
- Implemented new procedures on how to inspect equipment and ensure repairs were complete, therefore improving the longevity of the equipment.
- Collaborated with maintenance technicians to resolve reoccurring issues, resulting in a 20% reduction in maintenance turnaround time.
- Maintained detailed records of all inspections and maintenance performed in support of audit readiness, resulting in zero recordkeeping discrepancies during annual audits.
- Evaluated components and final products against quality standards and manufacturing specifications.
Vehicle maintenance technician
United States Marine Corps
08.2014 - 10.2016
- Performed vehicle maintenance diligently and expedient manner, resulting in an increase of customer satisfaction.
- Completed 235 vehicle maintenance requests with a 98% customer satisfaction rating, resulting in an increase of returning customers for their vehicle needs.
- Collaborated with senior technicians to improve maintenance procedures, resulting in a 10% reduction in turnaround time.
- Created standardized procedures on rebuilding engines, transmissions and differentials, resulting in a faster turnaround on rebuild requests.
- Tested newly installed equipment to determine proper functionality and compliance with regulations.
- Maintained accurate records of time and materials required to perform repairs and service.
Parts Manager
United States Marine Corps
10.2011 - 08.2014
- Successfully managed parts inventory for a fast-paced service company, maintaining optimal stock levels and reducing backorders by 10% by forecasting future needs.
- Conduct regular inventories and cycle counts, resulting in inventory accuracy increasing to 97%.
- Developed and implemented strategies that focused on optimizing parts procurement, resulting in a 5% increase of department profitability.
- Implemented bar scanning technology as well as bin labeling causing a 35% reduction in manual entries.
- Offered hands-on assistance to customers, assessing needs, and maintaining current knowledge of consumer preferences.
- Mitigated financial discrepancies by managing inventory, damaged goods and backorders.
Education
Bachelor of Science - Human Resources Management
University of Maryland Global Campus
Adelphi, MD12.2024
Associate of Arts - General Studies
University of Maryland Global Campus
Adelphi, MD12.2020
High School Diploma -
Dominguez High School
Compton, CA06.2011
Skills
- Leadership
- Safety compliance
- Quality control
- Employee relations
- Staff development
- Personnel conflict resolution
- Microsoft office
- Bilingual in Spanish and english
- Knowledge of lean six sigma processes
- OSHA 10 certified
Certification
- Six Sigma Yellow Belt (12/2025)
- OSHA 10 - General Industry
- Forklift Certification (10/2025)
- Hazardous Waste Generator/Handler (12/2019)
- Transportation of Hazardous Materials Certifier (12/2019)
- Sexual Assault Victim Advocate (01/2021)
Languages
English
Native or Bilingual
Spanish
Native or Bilingual
Work Availability
monday
tuesday
wednesday
thursday
friday
saturday
sunday
morning
afternoon
evening
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SPECIALIZED MILITARY TRAINING
- Joint Senior Leaders Training (40 Hours)
- Senior level Leadership Training (63 Hours)
- Middle level Leadership Training (187 Hours)
- Sexual Assault Victim Advocate (60 Hours)
- Self Defense Instructor (110 Hours)
- Hazardous Materials Shipment Certifier (144 Hours)
- Hazardous Material Handler (24 Hours)
- Oracle Operations (180 Hours)
Timeline
Warehouse Specialist
MANCON
08.2025 - Current
Personnel Manager
United States Marine Corps
05.2022 - 07.2025
Vehicle maintenance supervisor
United States Marine Corps
10.2018 - 05.2022
Quality Control Inspector
United States Marine Corps
10.2016 - 10.2018
Vehicle maintenance technician
United States Marine Corps
08.2014 - 10.2016
Parts Manager
United States Marine Corps
10.2011 - 08.2014
Bachelor of Science - Human Resources Management
University of Maryland Global Campus
Associate of Arts - General Studies
University of Maryland Global Campus
High School Diploma -
Dominguez High School