Pubudu was born in Kithulampitiya, Galle. His mother, L.I Weththasinghe, is a housewife born in Colombo who moved to Galle after marrying his father, E.V.G Somasiri, in the 1970s. His surname, Pubudu, came from his father"s personal name, given to him by his grandfather.
Pubudu attended Richmond College in Galle, which his father had also attended.
Chathuranga has also been awarded Sarasaviya Awards and SIGNIS Awards several times. The name Pubudu means "blossoming of wisdom", and Chathuranga stands for any four noble things. His school drama performances started in grade 1, where he acted in a comedic street play, "Mahadana Muththa".
Afterwards he appeared in fourteen other stage dramas at the school, including ten English plays, for example Julius Caesar.
He organized his own theater group when he was in grade 12 and carried out his own theatrical productions, such as Miriguwa (Eyes Wide Shut) and Histhanak. He was selected to receive higher education as a candidate for a Higher National Diploma in Engineering (HNDE), and he moved to Colombo.
However, he became more involved in the arts than mathematics Pubudu started his career by appearing on stage in Trojan Women by Dharmasiri Bandaranayake.
He then moved to television with a teledrama of Professor
Ariyarathna Athugala, named Samanala Kandawura. Pubudu became popular, landing recurring roles in television series such as the soap opera Sara (2006), Lokkaiya (2007), Gajamuthu (2008) and Ran Samanalayo (2010). He also appeared as a television presenter, with successful musical chats such as Sikurada Rae (Derana television) and Copy Chat (Hiru television).
He made an international appearance in Uberto Pasolini"s award winning movie Machan (2008).
Since the 2000s, Pubudu has appeared in 20 movies with locally and internationally recognized directors. His stage career became successful after he appeared in Nari Burathi (2012), where he played the main role.
His writing career started in childhood and prospered after he wrote the movie Sara, "The first Sri Lankan movie which is written based out of a television serial". He has also written upcoming movies such as Pravegaya (action/romance) and Maayaa (horror/comedy).
He has been nominated for best actors awards twice, and won the Best Actor (2012) in The Derana Lux Film awards for his performance in the movie Challenges (2011). He made his film debut in the comedic youth film Hiripoda Wassa (2004) and received his first notable critical award for this performance through the Sarasaviya Awards. Pubudu obtained recognition for his subsequent work in supporting roles in Tharaka Mal (2006) and Dancing Stars (2007), as well as a leading role in Kanyavi (2007), for which he received an award from SIGNIS Awards.
