Andrew Bialecki | $1B+

Get in touch with Andrew Bialecki | Andrew Bialecki is the co‑founder and CEO of Klaviyo, the Boston‑based marketing automation unicorn. A Harvard‑trained engineer and physicist, he bootstrapped Klaviyo since 2012 and retained a rare ~38% ownership at IPO, guiding the company to a multibillion-dollar valuation through disciplined, data‑driven growth. 

Andrew Bialecki is cofounder and CEO of Klaviyo, which sells marketing automation software. Bialecki launched Klaviyo in 2012 and refused venture capital money for three years, until the business was profitable. Klaviyo eventually raised $455 million from VCs, but Bialecki managed to retain sizable control: he owned 38% when he took the firm public in 2023. Klaviyo turned a gross profit of $520 million in 2023. Bialecki said he took cues on efficiency from the culture at Microsoft and Oracle in the 1980s and 1990s. Before Klaviyo, Bialecki studied physics, astronomy and astrophysics at Harvard, graduating in 2007, then worked as a software engineer for a few years. Klaviyo is an American technology company that provides a marketing automation platform, used primarily for email marketing and SMS marketing. Klaviyo, Inc. Headquarters in Boston Company type Public Traded as NYSE: KVYO Industry Marketing Automation Founded 2012; 13 years ago Founders Andrew Bialecki Ed Hallen HeadquartersBoston, Massachusetts, United States Area servedWorldwide Key peopleAndrew Bialecki (CEO) Products email marketing, sms marketing,[1] product reviews,[2] CDP[3] Revenue US$698 million (2023) Operating income − US$331 million (2023) Net income − US$308 million (2023) Total assets US$1.09 billion (2023) Total equity US$915 million (2023) Owners Andrew Bialecki (38%) Summit Partners (23%) Ed Hallen (14%) Shopify (11%) Number of employees 1,815 (2023) Websiteklaviyo.com Footnotes / references [4][5] The company is headquartered in Boston, Massachusetts, United States.[6] A majority of the approximately 143,000 merchants who use Klaviyo's software are e-commerce sellers who host their offerings on Shopify.[7][8] Contents History edit The company was founded in 2013 by Andrew Bialecki and Ed Hallen.[9] Both Bialecki and Hallen had previously worked at Applied Predictive Technologies.[8] In August 2022, e-commerce company Shopify announced it was making Klaviyo the recommended email solution partner for its Shopify Plus merchant platform, with a US$100,000,000 strategic investment into the company.[10][11] In November 2022, Klaviyo announced its first acquisition, code development firm Napkin.io.[12] In April 2023, Klaviyo filed for an initial public offering (IPO) for a listing at the New York Stock Exchange.[8][13] In September, the company went public, raising $576 million in the IPO at a $9.2 billion valuation.[14][15] In June 2023, Klaviyo partnered with e-commerce platform Prestashop with the launch of Prestashop Automation with Klaviyo [16][17] In 2024, the Klaviyo Marketing Platform was localised into six non-English languages, French,[18] German, Spanish, Italian, Korean and Brazilian Portuguese.[19] Software and services edit The Klaviyo platform primarily integrates with e-commerce platforms, such as Shopify, Magento, BigCommerce, Stripe, and WooCommerce.[20] In addition to its e-commerce platform integrations, users can integrate other tools from their tech stacks like Zendesk, Postscript, Meta Ads, Google Ads, Square, Albato, Zapier, Aftership, Amazon Buy with Prime, Big Commerce, Canva, Zoho and Okendo [21] and Salesforce, directly to Klaviyo, or use an API solution when an integration needs to be customized.

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