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Squarespace, Inc.

Founders

Who Founded Squarespace?

Anthony Casalena · Founded 2003 · HQ today: New York, New York, United States

Who founded Squarespace?

Squarespace was founded by Anthony Casalena in 2003. It is now led by Anthony Casalena.

Founders
Anthony Casalena
Founded
2003
Headquarters
New York, New York, United States
Number of founders
1
Current CEO
Anthony Casalena (since 2003)
Where was Squarespace founded?
Squarespace was founded in College Park, Maryland, United States in 2003.
When was Squarespace founded?
Squarespace was founded in 2003.
Who started Squarespace?
Squarespace was founded by Anthony Casalena.
How old is Squarespace?
Squarespace is 23 years old as of 2026.

Founding Story

In 2003, Anthony Casalena was a college student in Maryland who just wanted to build a simple, beautiful blog. He looked at the software available and was disgusted by how highly ugly it was. Out of pure frustration, he locked himself in his dorm room and coded his own website builder from scratch. It was so elegant that his friends demanded to use it. With a $30,000 loan from his dad, he launched the company from his dorm, acting as the sole engineer, designer, and customer support agent, accidentally building a billion-dollar design empire.

Background

Anthony Casalena possessed an incredibly rigorous, deeply technical background in advanced computer science, complex web architecture, and massive-scale digital product design. Having successfully studied at the incredibly prestigious University of Maryland and possessing an intense, obsessive dedication to structural aesthetics and code optimization, this intensely creative and engineering foundation provided the exact strategic leverage required to successfully pioneer the incredibly massive Squarespace platform from absolute scratch.

Role at Squarespace, Inc.

Anthony Casalena is a fiercely visionary American software engineer, highly strategic digital product designer, and the profoundly influential CEO and founding patriarch fundamentally responsible for architecting the massively dominant Squarespace website building empire. Operating as an incredibly talented computer science student in his dorm room at the University of Maryland in 2003, Casalena aggressively recognized the massive, agonizingly disjointed friction of attempting to build a beautiful website using highly fragmented hosting and disparate software tools. He relentlessly launched Squarespace as a fully integrated, incredibly aesthetic all-in-one platform. By fiercely prioritizing massive design elegance and aggressively engineering highly robust, scalable cloud infrastructure, his absolutely rigorous strategic leadership completely revolutionized the global digital publishing industry. His massive corporate execution permanently established an absolute multi-billion dollar SaaS monopoly. Anthony Casalena was born in 1982.

Squarespace, Inc.: CEO & Leadership History

Full timeline →

Courtenay O'Connor

President

2015 – 2020

Courtenay O'Connor, as General Counsel, played an instrumental role in shaping Squarespace's corporate strategy, navigating complex regulatory environments, and steering the company through critical milestones including its public listing.

Jesse Hertzberg

Co-CEO

2010 – 2015

Jesse Hertzberg served as a key executive during Squarespace's formative high-growth years, leading operational scaling, business development, and customer operations that were vital to expanding the platform's user base globally.

Anthony Casalena

Founder & Chief Executive Officer

2003 – Present

Founded Squarespace in a college dorm room in 2003, led it through the 2021 NYSE direct listing and past $1 billion in 2023 revenue, and stayed on as CEO after the 2024 Permira take-private.

Keep researching Squarespace

Who Founded Squarespace? FAQ

Who founded Squarespace and where did the founding take place?

Squarespace was founded by Anthony Casalena in late 2003 in his dormitory room (room 2101 in Hagerstown Hall) at the University of Maryland, College Park, where he was studying computer science.

What personal problem prompted Anthony Casalena to build Squarespace?

Casalena wanted to build a personal website and blog to showcase his computer projects, but found existing solutions deeply unsatisfying. Platforms like Blogger and Movable Type were functionally fragmented, lacked modern visual aesthetics, and required complex server administration, while page builders like GeoCities produced ugly, unprofessional results.

What initial funding did Anthony Casalena receive to start the company?

Casalena borrowed $30,000 from his parents to purchase high-performance server hardware and bandwidth. With that initial capital, he launched the first version of Squarespace in January 2004, charging early users $8 to $12 per month.

How did Anthony Casalena acquire his first 100 paying customers?

Casalena acquired early users by sharing his software with friends, posting on tech blogging forums, and running small Google AdWords campaigns. When influential tech bloggers began using Squarespace to power their personal sites, word-of-mouth adoption surged among web enthusiasts.

What was the daily routine of Anthony Casalena as a solo founder between 2003 and 2007?

For nearly four years, Casalena handled every operational task alone: writing thousands of lines of Java and JavaScript, managing server clusters, designing user interfaces, and answering customer support tickets at all hours of the night, maintaining a profitable, debt-free operation.

When did Anthony Casalena finally hire his first employee?

Casalena ran Squarespace completely alone until early 2007, when the business reached approximately $1 million in annual revenue and hundreds of support tickets per day became overwhelming. He hired his first support specialist and a system administrator before opening an office in New York City.

Why did Anthony Casalena relocate Squarespace from Maryland to New York City?

In 2007, Casalena moved the company to New York City to tap into the world's premier hub of advertising, visual design, fashion, and media talent. He believed that building a design-led software platform required creative designers and brand thinkers who congregated in Manhattan.

What was Anthony Casalena's core design philosophy when building Squarespace?

Casalena adhered to a philosophy of "restraint and craftsmanship." He believed that good design is about what you leave out, ensuring that Squarespace templates provided structured elegance, beautiful typography, and harmonious whitespace that prevented non-designers from creating chaotic layouts.

How did Anthony Casalena maintain controlling voting power in Squarespace?

When Squarespace took venture capital and later went public, Casalena instituted a dual-class share structure where Class B super-voting shares gave him over 60% of the voting power, ensuring he could make bold, long-term strategic decisions without shareholder interference.

What advice does Anthony Casalena frequently share with aspiring software entrepreneurs?

Casalena emphasizes solving your own genuine problem, prioritizing product quality over rapid fundraising, and maintaining financial discipline: "If you don't need money, don't take it. Bootstrapping forces you to build something people are actually willing to pay for from day one."

What is Anthony Casalena's personal net worth following the Permira acquisition?

Following the $7.2 billion acquisition by Permira, Anthony Casalena's estimated personal net worth was valued at approximately $2.5 billion to $3.0 billion, cementing his status as one of the most successful self-made software founders in American history.

How is Anthony Casalena's legacy celebrated at the University of Maryland?

Casalena is an esteemed alumnus of the University of Maryland. He established major scholarships in computer science and donated millions to create the Casalena Technology and Entrepreneurship Programs, inspiring student entrepreneurs to build tech startups from their dorm rooms.

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Content is for informational purposes only. Not financial advice. Data sourced from SEC filings, annual reports, and public records. See our full disclaimer and methodology.