Mount Rainier National Park employs approximately 125 permanent employees. Between May and September, the peak visitation season, up to an additional 175 temporary employees are hired. Temporary positions include laborers, maintenance workers, biological technicians, visitor use assistants who handle fees at entrance station and campgrounds, and park rangers. There are also a limited number of openings for clerical staff and trades and crafts professionals. United States citizenship is required for all positions. Three commercial climbing and mountaineering guide services operate at Mount Rainier. Contact these companies directly for information about employment opportunities: Work With Us - Mount Rainier National Park (U.S. National Park Service)