Brush and trees were reported to be on fire on the Cottle Road onramp to northbound state Route 85 at 9:16 p.m., according to the fire department.
As firefighters were putting out the fire, they discovered there was a body in the flames.
The fire is contained but not under control and San Jose police are responding to the scene to investigate, fire officials said.
Details about the body have not yet been determined.