The phrase "rich experience" means having a lot of valuable and enjoyable moments in life, which make you feel fulfilled and knowledgeable. Full definition
Executive management specialist with 10 + years of rich experience in administrative functions, training, research and providing excellent service. (resumemycareer.com)
«These are folks with rich experience with data tools,» she said. (edition.cnn.com)
We only see glimpses into a much richer experience of getting to know a place. (theexpeditioner.com)