His short documentary
Wagah was shown at more than 200 film festivals and was regarded as the third most popular short film in the world in 2009 by
German Short Film Magazine. It also won the Berlin Today Award at the
Berlin Film Festival. After watching the movie eminent German filmmaker
Wim Wenders commented that "Wagah is a manifesto against walls that divides people." His two hour long feature documentary on the Partition of India,
Way Back Home is the first Indian documentary that was commercially released. Sen is a Berlinale Talent (international young filmmakers program by Berlin Film Festival). He has served as juror at various film festivals, including the Busan International Film Festival, Taiwan International Documentary Festival, DMZ Documentary Festival (Korea), Eagle Award (Indonesia), Kolkata International Film Festival, Dhaka International Short and Documentary Festival, SiGNS (Kerala) and Indian National Award selection. Alongside directing, he also produced the TV/web series
Kaali and
Feluda. He has received grants from Sundance Documentary Fund, Jan Vrijman Fund (IDFA) and Asian Cinema Fund (Busan International Film Festival), DMZ Docs Fund several times and worked with NHK, DW TV, Planet, Goethe Institute, Films Division, PSBT and German, French American and Japanese producers. == Filmography ==