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 All positions located at Yosemite National Park. MAJOR DUTIES: This is a leadership training position under a Trail Worker Supervisor. The incumbent will direct and instruct a group of laborers, trail workers, California Conservation Corp, Youth Conservation Corp, and volunteers in trail maintenance, repair and construction projects, removing windfalls, felling trees, and utilizing block, tackle, and winches for moving and placing heavy objects. Work consists of: trail maintenance, dry and wet stone masonry trail construction, bridge construction, and rigging tasks; animal packing, operating trail cats, snowplows and other equipment, small engine repair and camp maintenance is required. Physical effort: heavy physical effort is required in bending, lifting, and using hand and power tools in trail work. Frequently lifts and carries objects weighing over 100 pounds, must carry and roll rocks and logs, move rocks of serval tons with rock bars, use hammers to crush or shape rock and use shovel extensively. Frequently hikes up to 20 miles daily and must be able to do so while carrying a backpack and tools. Work conditions: must have the ability to live and work effectively in the backcountry in close contact with groups of people for extended periods of time. Must live 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 and hazardous conditions may exist when moving rocks and logs, working in and around rockslide areas, working around stock, and working around explosives, falling and bucking trees and working around machinery. Area Information: Yosemite National Park, California, known worldwide for its spectacular natural beauty is the backdrop for this position. Sitting astride the Sierra Nevada Mountains, the park covers 1,182 square miles of varied wilderness ecosystems, from river valleys to alpine meadows to lofty 13,000 foot high peaks. Yosemite Valley is located 208 miles from San Francisco, 81 miles from Merced, and 94 miles from Fresno. Shopping, medical, postal and laundry services are available in the park. Elevation at the Valley floor is approximately 4,000 feet and 2,200 feet in El Portal. The park is open year-round with the majority of activities occurring during the busy season March through October. IMPORTANT: Click the 'Apply for this job' button to view a complete job description.