[8] Macneill is currently developing an original series, titled UNKNOWN, for Amazon Prime with Jonathan Nolan and Lisa Joy’s Kilter Films producing.
[9] Macneill's other TV directorial work include episodes for Jordan Peele's Twilight Zone, Castle Rock, NOS4A2, Monsterland, and the first season of the limited anthology television series Channel Zero: Candle Cove.
He graduated from the University of Colorado with a Bachelor of Fine Arts after having studied under filmmakers including Stan Brakhage.
[14] Macneill directed and co-wrote the 2015 feature film The Boy, starring David Morse, Rainn Wilson, Jared Breeze, Mike Vogel, Bill Sage, Zuleikha Robinson, and Aiden Lovecamp.
The film was produced by Elijah Wood, Daniel Noah, and Josh C. Waller and the company SpectreVision.