Heavy Equipment Mechanic – Emergency Response Fleet
Location: Houston / La Porte, TX
Company: Haz Mat Special Services (HMSS)
Employment Type: Full-Time
Schedule: Day shift with on-call / emergency response support as needed
Position Overview
Haz Mat Special Services (HMSS) is seeking a Certified Heavy Equipment Mechanic to support our emergency response, industrial services, and wildfire response fleet across the Gulf Coast region. This role is critical to maintaining operational readiness for time-sensitive response work.
The ideal candidate has strong diesel and hydraulic experience, is comfortable working across on-road and off-road equipment, and understands the urgency and accountability required in an emergency response environment.
Primary Responsibilities
- Perform preventative maintenance and repairs on a mixed fleet including:
- Heavy-duty diesel trucks (Kenworth, Freightliner, Peterbilt, Hino)
- Vacuum trucks, roll-offs, and water trucks
- Fire apparatus (brush trucks, pumpers, ladder truck)
- Heavy equipment (CAT dozers, backhoes, excavators; Kubota equipment)
- Trailers, generators, pumps, and response equipment
- Diagnose and repair diesel engines, hydraulic systems, electrical systems, brakes, and drivetrains
- Conduct and document DOT annual inspections and ensure FMCSA compliance
- Support emergency response deployments with rapid troubleshooting and field repairs when required
- Maintain accurate maintenance records and communicate equipment readiness to operations leadership
- Coordinate with operations and response teams to prioritize critical assets
Required Qualifications
- ASE Heavy Truck (T-Series) certifications (T2–T6 strongly preferred)
- Proven experience as a Heavy Equipment or Fleet Mechanic
- Strong working knowledge of:
- Diesel engines
- Hydraulic systems
- Air brakes
- Electrical diagnostics (12V / 24V systems)
- Experience performing DOT inspections and maintaining compliance documentation
- Valid driver’s license (CDL preferred but not required)
- Ability to work independently with minimal supervision
- Willingness to support on-call or emergency response needs
Preferred / Strongly Desired
- Caterpillar and/or Kubota OEM experience or certification
- Fire apparatus or emergency vehicle maintenance experience
- Vacuum truck or hydrovac system experience
- Welding and fabrication skills
- Generator service experience (Multiquip or equivalent)
Work Environment
- Shop-based with occasional field and response-site work
- Exposure to industrial environments and emergency response conditions
- PPE provided as required
Compensation & Benefits
- Competitive pay based on experience and certifications
- Overtime opportunities
- Company-paid PPE
- Opportunity to support real-world emergency response operations
- Stable, growing company with regional response footprint
Why HMSS
HMSS supports industrial incidents, emergency response, wildfire operations, and environmental services across the Gulf Coast. Our mechanics are not just turning wrenches — they are a critical part of keeping response assets mission-ready when it matters most.
Benefits:
- Dental insurance
- Health insurance
- Life insurance
- Paid time off
- Vision insurance
Work Location: In person
