23-year-old cofounders left Amazon and Microsoft to build an AI startup. Read their Y Combinator pitch deck.

Earlier this year, two 23-year-old engineers left their jobs in Big Tech to start their own company, Bluejay. Just months later, they’ve raised $4 million in seed funding for their AI agent-testing startup.

The San Francisco-based company provides quality assurance for AI agents, with a focus on voice agents. Bluejay cofounders Rohan Vasishth and Faraz Siddiqi exited Amazon and Microsoft, respectively, and they graduated from Y Combinator’s spring 2025 batch.

Vasishth told Business Insider he chose to leave his first job out of college because the promise of AI is unfolding rapidly.

“I don’t need to stay here for six years to learn about it,” he said. “In fact, I will learn about it probably faster by just doing it.”

Floodgate led Bluejay’s seed round, with participation from Y Combinator, Peak XV, and Homebrew. Executives from Hippocratic AI, Deepgram, PathAI, and others also invested in the company.

Bluejay stress-tests AI agents by generating synthetic customers that can contend with different languages, accents, background noise, and personalities. It says it can simulate a month’s worth of AI agent interactions in minutes.

Vasishth and Siddiqi are building the company at a San Francisco “hacker house” alongside their first hire, a founding engineer, Vasishth said.

Vasishth says the company’s “super scrappy” attitude, lighthearted branding, and mascot help it stand out among competitors. The duo graduated from YC in bluejay onesies, for instance, and they handed out flyers as a grassroots marketing maneuver when a competitor sponsored a conference.

The company takes its name from the fact that it’s repeatedly pinging agents, like birds that warn one another of danger, Vasishth told Business Insider. In addition to testing, Bluejay helps clients monitor AI agent performance.

Bluejay will use its new funding to hire developers, researchers, and salespeople.

Bluejay is hardly alone in QA, as a fleet of companies — including Braintrust, Arize AI, and Galileo — seeks to jump in on the spread of AI agents.

Here’s a look at the pitch deck Bluejay used to raise its $4 million seed round. Certain slides have been edited and removed so that the deck can be shared publicly.

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