Peyton, ColoradoJeff Mielke is a dynamic non-profit executive with 15+ years development and fundraising experience, providing operations management & cross-functional... Jeff Mielke is a dynamic non-profit executive with 15+ years development and fundraising experience, providing operations management & cross-functional leadership. Jeff brings a proven track record of planned giving and fundraising programs for 501c3 organizations in education and healthcare. He has...