In 2013, Mullick co-directed alongside Bassam Tariq, These Birds Walk a documentary revolving around a boy and ambulance driver in Karachi.
It had its world premiere at True/False Film Festival in March 2013,[1] It was released in November 2013, by Oscilloscope.
[2] In 2020, Mullick directed an episode and served as cinematographer on The Vow a documentary series revolving around NXIVM for HBO.
[4] That same year, Mullick produced the documentary short Three Songs for Benazir which was acquired by Netflix, and nominated for an Academy Award.
[5] In 2022, Mullick co-directed with Karim Amer and served as cinematographer on Flight/Risk, a documentary revolving around whistleblowers at Boeing for Amazon Studios.