tinkerer

plural tinkerers

1. agentAgent noun of tinker; one who tinkers with things.

   Part of why both books dragged on so long is that Mr. Talese, who once worked for The New York Times, is a perfectionist, an obsessive tinkerer and rewriter, and also a famously meticulous reporter and researcher who spurns devices like composite characters and faked identities.

   2009 April 16, Charles McGrath, “Sex and Crime, the Updates: Gay Talese Is Back on the Beat”, in The New York Times

   1 more example

   Make magazine, which celebrates “your right to tweak, hack and bend any technology to your own will,” has joined with the New York Hall of Science to gather more than 500 of the craftiest inventors, artists, technology enthusiasts, tinkerers and hobbyists to share their expertise.

   2011 September 15, Rachel Lee Harris, “The World Maker Faire in Queens Draws Inventors”, in The New York Times

2. A meddler.