Sabarinathan Rajeswaran, known as Sabari, is a co-founder of TripleDart, the Bengaluru, India, growth agency that works only with B2B software companies, and heads its paid media practice. He started TripleDart in December 2020 with Shiyam Sunder, Manoj Palanikumar, and Jayakumar Muthusamy, after earlier marketing work at Multiplier, Kovai.co, and Stan Ventures.
Running Paid Media at TripleDart
At TripleDart he leads a team of more than 30 paid search and paid social specialists, according to his LinkedIn profile. His TripleDart author page says he has worked with more than 70 B2B software companies and credits his team's paid campaigns with a 164 percent rise in deal pipeline for Apty, a digital adoption company, and a 48 percent cut in cost per lead for Emitrr, a patient communication company. Each engagement opens with an audit of the client's programs and competitors and sets 30, 60, and 90 day targets.
TripleDart was started with ₹5 lakh and has grown without outside funding. Co-founder Shiyam Sunder told The Economic Times in July 2026 that about 80 percent of its revenue comes from North American clients.