Dennis Thankachan

Dennis Thankachan is the co-founder and CEO of Lightyear, a New York software company that automates how enterprises buy and manage telecom and network services. A former Goldman Sachs banker and hedge fund investor at PointState Capital, he built a thesis around telecom while investing in the sector, then left finance in 2019 to fix an industry he describes as a multi-trillion-dollar market with almost no happy customers. Under his leadership Lightyear has raised roughly $48.6 million, closed a $31 million Series B led by Altos Ventures in 2024, and serves customers including Palo Alto Networks, Five Guys, Pandora Jewelry, and Teladoc.