She made her acting debut in the Malayalam film Traffic. She has a younger sister Akhita Pramod. She did her schooling at Carmel Girls Higher Secondary School in Thiruvananthapuram.
She was enrolled at the Saint Teresa"s College to pursue a Bachelor degree in Sociology in June 2014.
She has stated that she was "not going to let acting career compromise studies". Namitha started acting when she was in seventh standard by taking on roles in serials such as Vellankanni Mathavu where she played the role of Mathavu, Amme Devi where she played the role of Devi and Ente Manasa Puthri where she played Anjali.
She made her debut in films when she acted as Riya, the dying daughter of Rahman and Lena, in Rajesh Pillai"s critically acclaimed Traffic. In her next film Puthiya Theerangal she played her first lead role, playing a fisherwoman, opposite Nivin Pauly.
lieutenant was followed by more lead roles in Sound Thoma with Dileep and Pullipulikalum Aattinkuttiyum with Kunchacko Boban in which she played a Mohiniyattam dancer.
She was not trained in Mohiniyattam and learned the dance steps in Saranya Mohan"s dance school in Alappuzha for four days. Both films were successes and she was selected as Top Star (Female) 2013 in Malayalam. In 2014, she was first seen in En Kadhal Pudhithu, her debut Tamil film directed by Maaris Kumar which had a delayed release, followed by Lijin Jose"s Law Point in which she played a modern, city bred girl named Maya.
In Lal Jose"s Vikramadithyan, she played the role of Deepika, a Konkani girl, which required her to speak a few lines in Konkani, a language she had never used before.
Her next film Villali Veeran, in which she paired once again with Dileep, had her playing the role of an ad filmmaker. Her last release in 2014 was Ormayundo Ee Mukham, a romantic drama in which she was cast opposite Vineeth Sreenivasan.Her latest release of 2015 is Chandrettan Evideya.
Her recently released Malayalam movie Amar Akbar Anthony starring Prithviraj, Jayasurya and Indrajit directed by popular stage artist Nadirshah where she played a role as a dancer was a blockbuster hit in Malayalam theatres. She has acted in many commercials of Bhima Jewellers, Francis Alukkas and Ripple Tea.
She has participated in the popular reality show Ningalkkum Aakaam Kodeeshwaran on Asianet.