Executive Spotlight: Guillaume Pousaz, Founder and CEO of Checkout.com (2027)
Guillaume Pousaz is the founder and chief executive of Checkout.com, a global payments company he started in 2012. Checkout.com's own leadership page lists him as Founder and CEO, and he is the named author of the company's 2025 annual letter.
He matters because he built the company without outside funding until a 2019 Series A of $230 million, according to his Money20/20 speaker profile, and led it to more than $300 billion in payment volume in 2025, as reported by the company.
This page uses public professional information only.
Current role and company
Pousaz is Founder and CEO of Checkout.com, per the company's leadership page. His Money20/20 profile says he splits his time between strategy work with the executive team and work with the product team on the payments roadmap.
- TitleFounder and CEO, Checkout.com.
- Founded2012, to simplify online payments for merchants and their customers (company leadership page).
- Company footprint19 offices worldwide and local acquiring in more than 50 countries (company homepage).
- MentoringThe leadership page says he mentors the Endeavour network of entrepreneurs.
Career path
The sources we read give little about his work before Checkout.com: the company's leadership page lists only his founder and CEO role, and Fortune's 2020 40 Under 40 profile describes him as Swiss-born and Checkout.com as London-based without detailing earlier jobs. We do not fill that gap with unsourced claims.
- 2012. Founds Checkout.com.
- 2012 to 2019. Runs the company on his own funding, until a 2019 Series A of $230 million that valued it near $2 billion (Money20/20 profile).
- 2020. Fortune reports a $5.5 billion valuation after the company's summer 2020 funding round.
- September 2025. Checkout.com announces an employee share buyback based on a $12 billion valuation.
- February 2026. The company reports full-year 2025 profitability and more than $300 billion in volume.
What he is known for
- Self-funded growth. Years without outside capital before the 2019 Series A, per his Money20/20 profile.
- A single payments platform. In the company's February 2026 announcement he argued that a single, unified infrastructure would outmatch patched-together legacy systems.
- Returning to profitability. Checkout.com said it exited 2024 profitably and reported full-year EBITDA profitability for 2025.
- Payments expertise. His Money20/20 profile credits him with deep knowledge of card network rules and payments economics.
Leadership style and philosophy
Two statements in company releases give a sense of his stated approach. In the February 2026 announcement he said the company now has the right to win in any category and every geography. In January 2025 he said the growth reflected the team's ambition and merchants' trust. His New Year letter set concrete goals for 2025: 30 percent net revenue growth, a full year of profitability and a 15 percent headcount increase. We did not fetch a long-form interview, so this section is limited to those statements.
Key numbers (Checkout.com, company-reported)
All figures are from Checkout.com's own announcements and have not been independently audited.
- Payment volume, 2025$300 billion, up 64% year over year.
- Net revenue growth, 2025Over 30%, the second straight year at that level.
- Profitability, 2025Full-year EBITDA profitability with an adjusted EBITDA margin above 10%.
- Large merchants, 202563 merchants processing $1 billion or more, up from 39; over 1,000 enterprise merchants.
- Platform uptime, 202599.999%.
- Headcount, 2025About 2,000 staff, up 15% in 2025.
- Core net revenue growth, 202445%, with over 300 new enterprise customers added.
- Valuation, September 2025$12 billion, used for the employee share buyback.
What to watch next
Worth tracking: whether the company keeps its 2025 profitability while expanding in new regions and products, and how it follows through on its stated focus on a unified platform.
Questions people ask
Who is Guillaume Pousaz?
He is the founder and CEO of Checkout.com, the payments company he started in 2012.
Is Guillaume Pousaz still CEO of Checkout.com?
Yes. The company's leadership page lists him as Founder and CEO, and he authored the 2025 annual letter.
When did Checkout.com raise outside funding?
According to his Money20/20 profile, he funded the company himself until a 2019 Series A of $230 million.
How much volume did Checkout.com process in 2025?
The company reported $300 billion in payment volume for 2025, up 64% year over year.
Is Checkout.com profitable?
The company reported full-year EBITDA profitability for 2025, with an adjusted EBITDA margin above 10%.
Sources
- Checkout.com: Guillaume Pousaz leadership page · Current title, founding year, team size
- Checkout.com homepage · 2025 volume, offices, countries
- Money20/20: Guillaume Pousaz speaker profile · Self-funding, 2019 Series A, role focus
- Checkout.com newsroom: returns to full-year profitability (February 24, 2026) · 2025 results and quotes
- Checkout.com newsroom: employee share buyback and $12bn valuation (September 26, 2025) · Valuation, 2024 profitability
- Checkout.com newsroom: 45% growth (January 23, 2025) · 2024 results, 2025 goals
- Fortune: 40 Under 40 2020, Guillaume Pousaz · 2020 valuation, background
Facts were read from the linked pages on October 31, 2026. Some pages were read through a fetch tool that returns summaries, so confirm details on the original page. The hero photo is the official headshot from the Checkout.com leadership page, cropped to 16:9. Company figures are company-reported. This page covers public professional information only.
Top photo: Checkout.com (checkout.com/leadership)