He initially gained recognition for his collaborative work with screenwriter Mahdi Ahmed, during which they co-wrote screenplays for several projects, including the action masala film Ahsham (2015), family drama Vee Beyvafa (2016) and the crime anthology web series Hatharu Halha (2019).
In 2015, Zareer worked with Mahdi Ahmed for Ali Seezan's cop action thriller film Ahsham which follows a police in-charge seeking peace and judgment in a politically empowered local island.
[5] In 2019, Zareer collaborated with Abdulla Muaz for his thriller film Leena (2019), which centers around a young woman filled with aspirations for her life and future, only to meet a tragic end due to circumstances beyond her control.
[8] Later in the year, the first Maldivian anthology web series Hatharu Halha was released, for which Zareer alongside Mahdi Ahmed contributed in writing the screenplay for three segments.
[10] The following year, Zareer wrote the screenplay for Ali Seezan's romantic drama film Andhirikan which follows the downfall of a happy family as the wife is unable to conceive a baby.
[11] In 2021, Zareer wrote and co-produced Ibrahim Wisan-directed political thriller film Maryam which narrates the journey of an ordinary woman to dethrone an influential politician representing her constituency.