[7][8] In 2017, Kos co-directed alongside Kief Davidson, Bending the Arc a documentary film revolving around doctors and humanitarians devoted to health care in impoverished nations.
[9] In 2020, Kos served as producer and writer on The Great Hack directed by Noujaim and Karim Amer, which received a Primetime Emmy Award for Outstanding Documentary or Nonfiction Special nomination.
[12][13] That same year, Kos co-directed with Jon Shenk, Lead Me Home for Netflix, receiving an Academy Award for Best Documentary Short Film nomination.
[14] In 2024, Kos made his narrative debut with In Our Blood a horror-thriller revolving around a documentary filmmaker reuniting with her estranged mother.
[16] That same year, Kos co-directed with Jon Shenk and Bonni Cohen, The White House Effect a documentary revolving around climate change.