


Employees at Klaviyo rank Andrew Bialecki in the Top 5% of CEOs in Boston. Similarly, employees at Sendinblue rank Armand Thiberge in the Top 5% of CEOs in Paris, France. Employees rate their CEO differently based on the frequency of interaction, ability to affect company culture, and drive measurable results.

CEO of Klaviyo
BIO: Andrew Bialecki is the co-founder and CEO of Klaviyo, a unified customer platform that gives online brands direct ownership of their consumer data and interactions, empowering them to turn transactions with customers into long-term relationships—at scale. From mom-and-pop shops to established companies, innovative brands like Unilever, Living Proof, Solo Stove, Citizen Watches, and more than 90K other paying users leverage Klaviyo to acquire, engage, and retain customers—and grow on their own terms. Prior to Klaviyo, Andrew served as Chief Technology Officer at RockTech and Lead Engineer at Applied Predictive Technologies. He earned his bachelor’s degree in physics, astronomy, and astrophysics from Harvard University.

CEO of Sendinblue
BIO: I have been an entrepreneur for more than 10 years. I strongly believe that employees are a company’s most valuable asset, which is why I try each day to give my employees more power and more freedom. I value diversity, and that includes the diversity of consumer experiences. I believe that SaaS for SMBs is going to explode and make SMBs stronger, allowing them to rise up and beat the giants.

Women at Klaviyo rated their CEO an A+

Women at Sendinblue rated their CEO an A+

Diverse Employees at Klaviyo rated their CEO an A+

Diverse Employees at Sendinblue rated their CEO an A+
At Klaviyo, employees in the Legal department rate Andrew Bialecki the highest. At Sendinblue, the Customer Support department's employees rate their CEO highest.