Gonzalo Gallardo
Garland,TX
Summary
Results-driven Senior Diesel Mechanic and Welder with a proven track record in diagnosing and repairing diesel trucks and heavy equipment. Specialized expertise in advanced preventive maintenance, brake and drivetrain systems, as well as MIG and stick welding for structural repairs and fabrication. Recognized for effectively minimizing downtime while upholding stringent safety standards, consistently delivering reliable, production-ready repairs in high-pressure shop environments. Committed to enhancing operational efficiency and ensuring optimal performance of all machinery.
Overview
19
19
years of professional experience
Work History
Diesel Mechanic / Welder
Big Star
Dallas
06.2025 - 01.2026
- Executed structural and mechanical welding repairs using MIG and stick welding on frames, mounts, brackets, and equipment components
- Fabricated and modified metal components to restore equipment functionality and ensure compliance with safety standards
- Diagnosed, repaired, and maintained diesel-powered trucks and trailers. Including Engine regenerations, brake systems, suspensions, and drivetrains
- Install and repair hydraulic system (Thermaflow)
- Federal inspections done on semi’s and trailers
- Diagnosed and repaired internal and external system of valves of discharged (Scully Box)
- Diagnosed and repaired diesel engines, ensuring optimal performance and reliability.
- Conducted routine maintenance checks on heavy-duty vehicles to extend service life.
Mobile Machinery & General Mechanic / Welder
T&W Tires & Auto
04.2022 - 06.2025
- Provided mobile repair and maintenance support for heavy equipment and diesel-powered machinery
- Identified and corrected mechanical and hydraulic failures in field service conditions
- Performed structural welding and fabrication to restore equipment integrity and functionality
- Responded to breakdowns and service calls to keep equipment operational with minimal delays
- Completed repairs in accordance with safety requirements and operational standards
Mobile Semi Truck Mechanic / Hydraulic Mechanic / Welder
Southern Tire Mart
Dallas
01.2019 - 04.2022
- Delivered field-based mechanical support for Class 8 trucks, trailers, and hydraulic systems
- Analyzed and resolved hydraulic, air, and mechanical system failures during mobile service calls
- Repaired and restored truck frames, mounts, and components through precision welding and fabrication
- Performed roadside and on-site repairs to return equipment to service efficiently
- Documented service work and ensured compliance with safety and operational requirements
Diesel Mechanic
Navistar International Plant
Garland, TX
02.2010 - 08.2019
- Diagnosed and repaired diesel engines, ensuring optimal performance and reliability.
- Performed routine maintenance on heavy-duty vehicles to extend lifespan and efficiency.
- Utilized diagnostic tools to identify mechanical issues and implemented effective solutions.
- Collaborated with team members to enhance workflow processes and minimize downtime.
- Modifications and alterations to diesel trucks
- Hydraulic system instillation
Mechanic
Atlas Copco
Dallas, TX
03.2007 - 02.2010
- Hydraulic system installation
- Welding, fabrication, and assembly of towers
- Oversaw repair processes, maintaining high-quality standards and minimizing downtime for equipment.
- Performed routine maintenance on heavy machinery to ensure optimal performance and safety standards.
- Implemented process improvements that increased operational efficiency in equipment maintenance workflows.
Skills
- Welding: Stainless steel, aluminum, metal welds, Fabrications
- Diesel Mechanic: Federal Inspections, Pm’s, Regenerations, Engine Diagnosis, Full brake system repair and diagnosis, ABS, Suspension system
- Preventive Maintenance
- Heavy equipment repair
- Diesel engine repair
- Electrical systems
- Transmissions
- Performance improvement
Languages
English: Good
Spanish: Proficient
Timeline
Diesel Mechanic / Welder
Big Star
06.2025 - 01.2026
Mobile Machinery & General Mechanic / Welder
T&W Tires & Auto
04.2022 - 06.2025
Mobile Semi Truck Mechanic / Hydraulic Mechanic / Welder
Southern Tire Mart
01.2019 - 04.2022
Diesel Mechanic
Navistar International Plant
02.2010 - 08.2019
Mechanic
Atlas Copco
03.2007 - 02.2010