Romain Sestier (StackOne)
Overview
Romain Sestier is a French-born entrepreneur currently serving as the Co-Founder and CEO of StackOne, a technology company that provides a unified API platform designed to streamline integrations for SaaS entities. Prior to founding StackOne in 2023 with Guillaume Lebedel, Sestier had significant experience in product management, notably at Google, where he led teams to develop new solutions that enhanced sales intelligence operations. His career includes key roles at companies like Yieldify and Maxymiser (acquired by Oracle), which have aided him in developing a rich understanding of digital optimization and data-driven decision-making, further contributing to his entrepreneurial endeavors.
Recent Developments
- May 2025: Under Sestier’s leadership, StackOne continues to grow rapidly, expanding its capabilities by using AI for automating integrations across enterprise systems. Recently, Google Ventures led a $20 million Series A funding round, highlighting strong investor confidence.
- 2024: StackOne received €3.3 million in seed funding from Episode 1 and other notable investors, including executives from GitHub and Google, to expand its unified API services to new global markets, including the US, EU, and Australia.
- 2023: The company was officially launched, gaining early traction through significant partnerships and rapidly adopting a customer-centric approach to secure API integrations.
Personal Information
| Attribute | Information |
|---|---|
| Full Name | Romain Sestier |
| Born | France |
| Nationality | French |
| Occupation | Co-Founder and CEO of StackOne |
| Known For | SaaS integrations, Entrepreneurship |
| Net Worth | Not publicly disclosed |
| Education | Business Management & Marketing, Royal Holloway, University of London |
Early Life and Education
Romain Sestier grew up near Paris, France, in a technology-oriented household where his father worked as a software engineer. Initially aspiring to be an Air Force pilot, his interests shifted towards technology and business due to early exposure to computers and programming. After relocating to London for personal reasons, he enrolled in Royal Holloway, University of London, to study Business Management and Marketing, where he graduated in the top 3% of his class.
Career and Notable Achievements
Sestier’s career began at Maxymiser, where he worked as a digital optimization consultant. He later joined Yieldify, achieving the position of VP of Product & Services and contributed to building significant integrations for the company’s B2B clients. At Google, he helped launch significant product solutions that generated substantial revenue. In 2023, alongside Guillaume Lebedel, he co-founded StackOne, aiming to resolve multi-platform integration inefficiencies that he identified in his earlier roles.
Current Work and Impact
Currently, Sestier focuses on expanding StackOne’s reach and capabilities, leveraging machine learning and AI to advance the integration of disparate software systems into a cohesive platform. His work is pivotal in addressing challenges within the SaaS ecosystem, particularly around real-time, privacy-conscious integration, making StackOne a leading choice for technology-driven companies worldwide.
Related Topics
Guillaume Lebedel
Guillaume Lebedel is the Co-Founder and CTO of StackOne, who collaborates closely with Sestier in driving the technical and strategic growth of the company. Their combined expertise in SaaS and AI technologies has significantly contributed to StackOne's success.
StackOne Careers
StackOne is recognized for its employee-centric culture and innovation-focused approach, attracting top talent across engineering, product management, and sales disciplines. The company continues to expand its team to support rapid growth and customer demand.
Conclusion
Romain Sestier stands out as a forward-thinking technology entrepreneur whose career evolution from digital optimization to CEO at StackOne exemplifies his commitment to resolving complex integration issues within the SaaS industry. His focus on innovation, privacy, and technical excellence sets a precedent for future leaders in the field. As StackOne continues to grow, Sestier’s impact and legacy in creating seamless, secure digital ecosystems are poised to influence the global tech landscape significantly.
References
- StackOne Company Overview
- Sifted: Google Ventures backs AI agents startup StackOne
- Pulse 2.0: Interview with Romain Sestier
- EU-Startups: StackOne secures seed funding
- Tracxn: StackOne Company Profile
- YouTube: An interview with Romain Sestier
- The Org Chart of Romain Sestier
- LinkedIn Profile of Romain Sestier
- Official Press Release on StackOne’s Series A Funding
- StackOne Blog: ToolSet Announcement