Position summary The Mountain Lakes Research Group, based at the University of California Sierra Nevada Aquatic Research Laboratory, will be hiring two or more assistants for the Summer 2021 field season. Successful applicants will work in the Sierra Nevada mountains as part of a team restoring populations of the endangered mountain yellow-legged frogs (Rana muscosa and R. sierrae) in the presence of the amphibian chytrid fungus, a widespread amphibian pathogen. During the summer we will be conducting frog translocations, reintroductions of captive-reared frogs, capture-mark-recapture surveys to assess the status of frog populations established via translocation/reintroduction in previous years, visual encounter surveys, and the collection of diagnostic