Besides TikTok, the Chinese conglomerate operates a range of content platforms, including social media platform Helo that achieved four crore monthly active users in India at the end of the first quarter of 2019.
TikTok, briefly banned in India for spread of pornographic content, claims to have over 200 million users in the country.
"I am excited to join ByteDance, one of the fastest growing global technology companies spearheading innovation in the mobile space," Singh said.
"In India, ByteDance has transformed the way people create and interact with their content, and I believe my experience will contribute to ByteDance's promising journey in this market," he said.
TikTok earlier this month said it reclaimed the top free app position on iOS and top free app in the "social" category on the Google Play Store, days after the Madras High Court's Madurai Bench lifted the ban.
Prior to joining ByteDance, Singh was GroupM Chief Executive Officer leading the South Asia operations of marketing services of the conglomerate.
"We are excited to welcome Sameer to the team. We are looking forward to working with him to bring ByteDance's monetisation efforts in India across our various platforms such as TikTok and Helo to even greater heights," Lidong Zhang, Senior Vice-President, ByteDance, said in a statement.