Fleischner graduated from Wesleyan University in 2006[2] with a degree in film studies.
His first narrative feature, Wah Do Dem, which he wrote and directed with childhood friend Ben Chace, won the jury prize for best film at the 2009 Los Angeles Film Festival.
His next feature as director, Stand Clear of the Closing Doors, was funded by Kickstarter, reaching its US$35,000 target in August 2012,[5] and won the Special Jury Prize in the Narrative Feature Section at the 2013 Tribeca Film Festival.
[6] In August 2013 the North American rights to the film were acquired by Oscilloscope Laboratories.
[6] He has directed music videos for MGMT, Panda Bear, and Santigold, among others.