 Jagielski is one of the founding members of The Apache Software Foundation, after having been a member of the original eight-member Apache Group.Jagielski served as Director on the ASF's board from its incorporation in 1999, until 2018, making him the longest serving Director in the Foundation's history.After having served eight years as Executive Vice President and Secretary, and three years as Chairman, Jagielski served for several years as President of the ASF.