Roberto Cardoza
Humble
Summary
Experienced and dependable Field Service Technician with over 12 years of experience in commercial, industrial, and residential HVAC,AHU and Filter Housing systems. Highly skilled in electrical diagnostics, installation, and control systems integration. Adept at troubleshooting both low-voltage control circuits and high-voltage components (120–480V). Seeking a challenging full-time position where I can contribute my expertise while continuing to grow professionally and support company success.
Overview
17
17
years of professional experience
1
1
Certification
Work History
Building Engineer
Meridian Hospital
Houston
06.2025 - Current
- Maintained building systems for optimal performance and safety compliance.
- Conducted routine inspections to identify maintenance needs and issues.
- Coordinated repairs with contractors and service providers efficiently.
- Assisted in developing preventative maintenance schedules for equipment.
- Implemented energy-saving measures to enhance operational efficiency.
- Responded promptly to maintenance requests from hospital staff and patients.
- Collaborated with team members to resolve facility-related challenges quickly.
- Ensured compliance with health and safety regulations throughout the facility.
- Installed new fixtures and equipment as needed throughout the facility.
- Monitored contractor performance, working with vendors to meet regulatory and organizational physical specifications.
- Responded quickly to tenant inquiries or complaints regarding building operations.
- Coordinated scheduling of preventive maintenance programs according to manufacturer's recommendations.
- Maintained building systems including HVAC, plumbing and electrical components.
- Conducted regular inspections of all mechanical, electrical, and plumbing systems.
- Established procedures for routine cleaning activities throughout the facility.
- Repaired drywall, furniture, doors, windows, and locksets as required by tenants or management staff.
- Provided technical support for troubleshooting problems related to building systems.
- Coordinated building repair and construction projects, maintaining security and emergency response to provide preventive and corrective maintenance.
- Reviewed blueprints or other documents prior to initiating any major renovation projects.
- Tracked inventory levels of parts used in repair and maintenance projects in order to maintain adequate stock.
- Assessed HVAC, electrical units and mechanical equipment to maintain functionality.
- Operated facility cooling and electrical systems to support data center operations.
- Ensured compliance with applicable codes related to building construction and safety regulations.
- Collaborated with local fire departments on periodic fire drills and inspections.
- Performed preventative maintenance on all equipment, ensuring optimal operation.
- Operated snow removal equipment during winter months to ensure safe access to property grounds.
- Managed vendor relationships for procurement of supplies necessary for ongoing maintenance work.
- Monitored energy usage and developed strategies to reduce costs associated with utility bills.
- Assisted with the development of emergency response plans in case of power outages or other issues.
- Led resolution of physical site issues, environmental damage and hazardous spills.
- Implemented quality control measures designed to minimize risk associated with operations.
- Performed routine maintenance by inspecting drives, motors or belts.
- Ordered parts, supplies or equipment from catalogs or suppliers.
- Diagnosed and corrected mechanical problems using blueprints, repair manuals or parts catalogs.
- Set up and operated machine tools to repair or fabricate jigs, fixtures or tools.
- Adjusted devices or control instruments using hand tools, levels or straightedges.
- Assembled, installed or repaired electrical or electronic components and pipe systems.
- Cleaned or lubricated shafts, bearings or other parts of machinery.
- Inspected, operated or tested machinery or equipment to diagnose machine malfunctions.
- Designed equipment to aid repair or maintenance of machines, mechanical equipment or building structures.
- Aligned and balanced new equipment after installation.
- Estimated costs to repair machinery, equipment or building structures.
Field Service Technician
Nailor Industries Inc.
Houston
06.2014 - Current
- Over 12 years of hands-on experience with commercial and industrial HVAC systems.
- Specialize in field service, start-ups, installation, and rework of units such as air handlers, fan-powered boxes, electric heaters, dampers, and louvers.
- Strong knowledge of low-voltage electrical control systems, including BACnet, P+I loops, 0–10VDC sequencing, and other building automation interfaces.
- Experienced working with high-voltage components (120V–480V) for heaters and motors and VDF.
- Diagnose and repair mechanical and electrical failures both on-site and remotely (phone/email).
- Assist engineering with new product development and provide feedback for continuous improvement.
- Support quality control efforts and maintain close collaboration with reps and customers for technical support.
- Assembled HVAC equipment and components on the production line.
- Travel to different states to perform inspection, repairs and maintenance services.
- Managed inventory and warehouse operations valued at over $12.5M; oversaw international shipping and receiving.
Assistant Maintenance Technician
Sunchase American Employers
Houston
08.2010 - 02.2014
- Performed daily maintenance and emergency repairs for residential properties.
- Electrical repair and HVAC maintenance including filter changes, system cleaning, and troubleshooting.
- Addressed plumbing issues, appliance installation, and unit turnover preparation.
- Maintained common areas and pool facilities in compliance with safety and health regulations.
- Assists with the renovation/remodeling of buildings.
- Responded promptly to maintenance requests, assessing issues and performing necessary repairs or replacements.
General Service Specialist
IST Management
The Woodlands
02.2009 - 06.2010
- Managed administrative services including shipping, HR, and basic accounting support.
- Provided IT assistance and operated specialized equipment.
- Delivered strong customer service in a fast-paced office environment.
Education
Air Conditioning Technician I, II & III -
San Joaquin Delta College
Stockton, CAHigh School Diploma -
Parkview Baptist School
Houston, TXSkills
- HVAC Installation & Repair
- Low-Voltage Controls (BACnet, 0–10VDC, PI)
- High-Voltage Systems (120V–480V)
- Electrical Troubleshooting
- Building Automation Systems
- Ductwork Installation
- Preventive Maintenance
- Warehouse Management
- CPR certification
- Inventory Control
- Microsoft Office (Excel, Word, Outlook, PowerPoint)
- Forklift Operation and boom lift Operation
- QuickBooks
- Aphelion
- Kofax
- OSHA Safety Practices
Certification
- OSHA 30-Hour Construction Safety and Health, 03/01/25
- TDLR Registered Air Conditioning & Refrigeration Technician
- HVAC Certification
- Forklift / Powered Industrial Truck Operator Certification
- Aerial Work Platform & Scissor Lift Certification (CFR 1910.67)
- New York State SWAC member
Additional Information
2023, Equal Housing, Human Resources, Safety, Office Operations
Personal Information
Willing To Relocate: 1
Timeline
Building Engineer
Meridian Hospital
06.2025 - Current
Field Service Technician
Nailor Industries Inc.
06.2014 - Current
Assistant Maintenance Technician
Sunchase American Employers
08.2010 - 02.2014
General Service Specialist
IST Management
02.2009 - 06.2010
Air Conditioning Technician I, II & III -
San Joaquin Delta College
High School Diploma -
Parkview Baptist School