At Sims Tree Health Specialists, Inc. (“Sims THS”), our mission is dedicated in the preservation, education, improved health, and safety of trees. Since 1972, our family-owned business has been a trusted partner to homes, schools, municipalities, and commercial properties, providing science-based diagnostics, sustainable treatments, and long-term tree health solutions. When you join Sims THS, you aren't just taking a job; you are becoming part of a dedicated group of tree nerds focused on the preservation of trees.

Position Overview

We are seeking a reliable, safety-conscious, and motivated Field Assistant to join our team on a part-time, on-call basis. In this role, you will provide critical operational support to our ISA Certified Arborists and Qualified Applicator License (QAL) Technicians during large-scale tree care and treatment operations.

This is a hands-on, physically demanding outdoor position perfect for someone looking to gain experience in arboriculture, plant health care, or environmental services.

Key Responsibilities

Field & Operational Support

• Equipment Setup: Assist with transporting, moving, and setting up specialized tree care equipment and rigging at various job sites.
• Application Assistance: Support QAL Technicians during treatments by pulling hoses, managing water valves, and adjusting pressure settings on the Tree Truck.
• Site Efficiency: Actively assist the crew to ensure all tasks are completed efficiently, on schedule, and to company standards.

Safety & Site Control

• Pedestrian Monitoring: Maintain situational awareness and monitor job site perimeters for pedestrians, vehicles, or hazards during active operations.
• PPE Compliance: Correctly wear and maintain all required Personal Protective Equipment (PPE), including safety glasses, high-visibility gear, and respirators.
• Site Maintenance: Follow strict safety protocols to maintain a clean, organized, and hazard-free work zone.
• Communication: Promptly report any equipment malfunctions, safety concerns, or operational issues to the supervisor.

Logistics & Compliance

• Vehicle Operation: Safely operate company-provided trucks and utility vehicles to and from job sites.
• Safety Training: Complete mandatory annual respirator training and fit-testing, strictly complying with all related health and safety regulations.

Position Requirements & Qualifications

Minimum Qualifications

• Driving Record: Must possess a valid California driver’s license with a clean driving record that meets our company’s auto insurance requirements.
• Reliability: Must be available for on-call, part-time work, often with flexible or variable hours depending on project needs. Must be able to work overnights (9:00 PM – 6:00 AM) every other Friday, and one Saturday per month.
• Communication: Strong verbal communication skills and the ability to take direction well from senior crew members.

Physical Demands & Work Environment

• Weather Resilience: Ability to work outdoors in all weather conditions, including extreme heat and inclement weather.
• Physical Stamina: Ability to perform heavy lifting, pushing, pulling, and prolonged standing or walking on uneven terrain.
• Respirator Use: Must be medically cleared and capable of wearing a respirator for extended periods during chemical or dust-heavy applications.