The Story of Lightyear: Building the Operating System for Enterprise Telecom

From Goldman Sachs to transforming enterprise telecom: How Lightyear’s CEO Dennis Thankachan built a company tackling the $1 trillion B2B telecommunications market through innovative software solutions.

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The Story of Lightyear: Building the Operating System for Enterprise Telecom

The Story of Lightyear: Building the Operating System for Enterprise Telecom

Not every founder starts their company with a clear vision of the problem they want to solve. In a recent Category Visionaries episode, Lightyear CEO Dennis Thankachan revealed how his path to founding the company began not with a brilliant insight, but with a desire to escape the constraints of corporate life.

Breaking Free from the Goldman Template

At Goldman Sachs, Dennis learned what he didn’t want to be. “Goldman Sachs is very much an environment where you’re pressured to look and act like every single other person surrounding you,” he recalls. “I, in fact, remember that when I was first starting, someone recommended me to wear one of only two different colored shirts and one of only two different color ties.”

For a self-described “very weird person” and “bit of a tinkerer” with “very eclectic and odd interests,” this environment was stifling. “I was muting many aspects of who I am,” Dennis explains. “Some of the aspects of who I am that make me special or interesting or make me the best version of myself.”

The Hedge Fund Detour

After Goldman, Dennis moved to a $10 billion hedge fund, where he led telecommunications investment. While the pressure-cooker environment “taught me a lot about underwriting risk and putting capital to work,” it still wasn’t the right fit. But it did expose him to the telecommunications sector, which would later prove crucial.

Finding the Real Opportunity

When Dennis finally left to start a company, he didn’t immediately land on Lightyear’s current focus. “I quit my hedge fund job with nothing lined up to start a company because I wanted to start a software business,” he admits. His initial ideas, drawn from his telecom investing experience, turned out to be “actually really shitty opportunities for business building.”

But while exploring other ideas, he discovered something unexpected: the massive inefficiency in B2B telecom procurement. “There is $1 trillion of global b to B telecommunication spend,” Dennis notes. Yet despite this scale, “there is no digital means for an enterprise to buy these services and manage these services.”

Building the Solution

This insight led to Lightyear’s creation. The company built a platform to help enterprises manage their mission-critical telecom infrastructure – everything from “business Internet connections, business wide area networking connections… dark fiber data centers, phone systems.”

The journey hasn’t been straightforward. They initially targeted SMBs before realizing enterprises were the better market. They had to rebuild their go-to-market strategy multiple times. But the focus on solving a real, painful problem for large customers has driven remarkable growth – 30x in just two and a half years, with 275+ customers now managing tens of millions in telecom spend through the platform.

The Vision Ahead

Looking forward, Dennis sees an opportunity to become the defining brand in B2B telecommunications. “In the context of business telecommunications, there is no brand or product that elicits a positive reaction from a buyer with any sort of brand recognition,” he explains. “And I think that is up for the grabs to capture with a lot of excitement from buyers around that potential.”

The strategy to capture this opportunity? “Doubling down on product and capturing more surface area of all the workflows within telecom in particular, without digging too deep into the nuance and not losing focus.” Despite pressure to expand beyond telecom, Dennis remains committed to depth over breadth.

It’s a long way from wearing prescribed shirt colors at Goldman Sachs. But for a tinkerer who always wanted to build something meaningful, transforming how enterprises manage $1 trillion in critical infrastructure might be the perfect challenge.

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