The duo join from Ogilvy India where their respective last roles were as group creative directors.
With these senior hires the agency aims to drive growth in key industry domains.
Somani has been associated with the agency for 10 years as executive creative director.
The duo will continue to report to BBH India's chief creative officer & CEO, Russell Barrett.
Mausami was associated with Kantar leading Unilever's relationship for India.