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Billionaire Profile
Andrew Bialecki
Global Rank
#2554

Image: Uzeu:Djozewal | CC BY-SA 4.0 | via Wikimedia Commons

Andrew Bialecki

CEO, Marketing software
UNITED STATES
Real-Time Net Worth
$1.576B
Estimated based on Marketing software stock value as of April 20, 2026
0% (24h)
Age
40
Source
Marketing software
Industry
Technology
Citizenship
UNITED STATES

Biography

Andrew Bialecki is the co-founder and CEO of Klaviyo, a marketing automation software company. His estimated net worth is $1.5 billion. Bialecki's journey includes a bachelor's degree in Physics, Astronomy, and Astrophysics from Harvard University. Before founding Klaviyo in 2012, he held roles as Lead Engineer at Applied Predictive Technologies, Senior Engineer at Performable, and CTO at RockTech. Klaviyo, under his leadership, has become a major force in e-commerce marketing. He is focused on expanding the company's reach and enhancing its AI capabilities. In 2022, Bialecki's transparent handling of a security incident demonstrated his commitment to accountability and customer trust.

Fact Checked
Verified by Editorial Team
Live Data
Updated 4/20/2026

Wealth Over Time

In-Depth Profile

Early Life and Education

Andrew Bialecki's early life began in Massachusetts, where he demonstrated an early aptitude for technology and business. He pursued his higher education at Harvard University, where he earned a Bachelor of Arts degree in Physics, Astronomy, and Astrophysics between 2003 and 2007.

Rise to Success

Before founding Klaviyo in 2012, Bialecki gained valuable experience in various technical roles. He worked as a Lead Engineer at Applied Predictive Technologies, as well as Senior Engineer at Performable, and Chief Technology Officer at RockTech. These experiences shaped his vision for Klaviyo and exposed him to the power of data-driven marketing. Klaviyo, under his leadership, has grown from a startup into a major force in e-commerce marketing. The company's platform helps businesses collect and analyze customer data to create personalized marketing campaigns across multiple channels, including email and SMS.

Key Business Strategies

Bialecki's strategic decision-making and entrepreneurial spirit have been instrumental in Klaviyo's success. He focused on efficiency and retained sizable control, owning 38% when the firm went public in 2023. Bialecki took a low base salary in 2022, which was around $78,670.

Philanthropy

Data not available.

Career Milestones

2007

Graduated from Harvard

Earned a Bachelor of Arts degree in Physics, Astronomy, and Astrophysics.

2011-2012

Chief Technology Officer at RockTech

Held the role of Chief Technology Officer at RockTech, a sales and marketing software company.

2012

Co-founded Klaviyo

Co-founded Klaviyo, a marketing automation software company, and became its CEO.

2023

Klaviyo IPO

Took Klaviyo public.

Philanthropy & Social Impact

Category not found.

Actual initiative not found.

$XB

Description not found.

Business Philosophy & Leadership

Notable Quotes

"Actual quote not found."

Leadership Principles

Data-Driven Approach

Emphasizes the use of data and analytics to inform decision-making and marketing strategies.

Customer-Centricity

Focuses on understanding and meeting the needs of customers through personalized experiences.

Transparency

Demonstrates openness and honesty in communication, including addressing challenges like security incidents.

Controversies & Challenges

2022

Security Incident

Klaviyo faced a security incident. Bialecki's transparent handling of the situation helped the company maintain trust.

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