JOB SUMMARY: The typical seasonal entry-on-duty period is April through October but can be variable during these months due to weather conditions, project needs, or funding. Anticipated Entry on Duty: April 2025. These positions are located at Yosemite National Park MAJOR DUTIES: The incumbent will be the leader of a trail maintenance crew providing leadership and guidance on multiple projects happening at the same time. Incumbent will perform journeyman level work in trail maintenance, dry and wet stone masonry, trail construction, bridge construction and rigging tasks and provide direction, oversight and supervision to employees. Performs camp maintenance and management tasks including camp layout and all aspects of camp moves and setup. Incumbent is responsible for transporting and operating mid-duty equipment such as skid steer tractors, mini excavators and backhoe loaders. Incumbent will design simple trail projects, prepare estimates for labor, supplies, materials and contracted services.This position requires hiking long distances daily and travel to remote work sites throughout Yosemite National Park, and will be required to live with work crew in remote wilderness setting for months at a time. Physical Demands: Heavy physical effort is required in bending, lifting and using hand and power tools in trail work. Examples of typical strenuous activity include: frequently lifts and carries objects weighing over 100 pounds, must carry and roll rocks and logs, move rocks of several tons with rock bars, use hammers to crush or shape rock, and use a shovel extensively. Frequently hikes up to 20 miles daily, and must be able to do so while carrying a backpack, power and/or hand tools. Working Conditions: Incumbent must have the ability to live and work effectively in backcountry areas in close contact with small numbers of people for extended periods of time. Incumbent must life and work out-of-doors on projects in various terrain up to 13,000 feet elevation in all extremes of adverse weather conditions. Trail work is dusty, hazardous conditions may exist when moving rocks, logs, working in and around rockslide areas, working around stock, working around explosives, falling and bucking trees, and working around machinery. IMPORTANT: Click the 'Apply for this job' button to view a complete job description.