In 1994, at the age of six, she became an A-grade child vocalist at
Sri Lanka Broadcasting Corporation (SLBC) under the guidance of her mother Kumari Munasinghe. During this period, she participated in many children programs of SLBC such as
Lama Pitiya and
Handa Mama. In 1999, she became a child radio presenter in Savana FM (now Shree FM). Then she made her maiden television appearance with the television serial
Esala Kaluwara directed by her father Jackson Anthony. At the age of twelve, Madhavee sang the song "Pipilada Sunimal" for her mother's album. The Musical direction for the program was done by Asela Bandara Dissanayake while her father Jackson Anthony directed and Thusitha Wimalasiri produced it. The show became a hallmark in Sinhala children's program history. In the same time, she worked as a child presenter in the children's program
Swarna Kekulu until 2004. Madhavee later won the award for the
Best Upcoming Actress at
Raigam Tele'es for her critically acclaimed role 'Palingu Achchi'. In 2016, she won the Merit award for Acting and Singing at
Sumathi Awards. Then in 2017, she acted in the serial
Pali. In 2018, she appeared in another critically acclaimed serial
See Raja directed by her father. Apart from acting, she continued to work as a singer primarily with two theme songs in the television serials
Daskon and
See Raja. Then she made a collaborative work featuring Thisara Weerasinghe for the song
Raththarane. Her single
Oba Epa became an instant hit in 2018. Since 2015, she is working as a television Presenter at
Hiru TV. In 2019, she made cinema playback with the film
Eka Gei Sokari directed by her father. In January 2021, she released her first music video single
Adare Onakere featuring Raj Thillaiyampalam. In the same year, she appeared in the television serial
Thaadi directed by Charith Abeysinghe. In 2021, she was cast in Raffealla Fernando Celebrity Calendar along with many other Sri Lankan celebrities. In the same year, she was nominated for the Best Teledrama Actress at
Sumathi Awards. Meanwhile, she also contested in the dance reality competition, "Hiru Mega Star, season 3". In 2022, she released the music video "Api Thamai Apiwa Danne". ==Other works==