Francisco Larrain serves as the Co-Founder and Chief Technology Officer (CTO) of Topsort, a company founded in 2021 that specializes in AI-driven retail media infrastructure designed for a post-cookie advertising environment. Topsort has secured significant investment, including a $20 million Series A funding round in March 2024, valuing the company at approximately $150 million. The firm focuses on democratizing auction-based advertising technologies historically dominated by large Silicon Valley players like Amazon and Google, utilizing AI and machine learning to provide _privacy-first_, _cookieless_, _bidless_, and _keywordless_ ad infrastructure that enhances revenue streams for retailers, brands, agencies, and marketplaces without intrusive third-party data tracking.
Professional Background and Expertise
Francisco Larrain is a serial entrepreneur with a diverse career encompassing engineering leadership, product innovation, and investment. Before co-founding Topsort, he was the head of local engineering at Groupon, leading a geographically distributed team of over 100 engineers across Chicago, Palo Alto, Seattle, Berlin, and Santiago. During his tenure at Groupon, he focused on building scalable marketplace technology, particularly enhancing the merchant system platform, which fueled his passion for creating seller-friendly technology solutions.
In addition to his role at Topsort, Francisco holds two other executive leadership positions: Co-Founder and Board Member at Maxxa, and CEO, Co-Founder at Sudo, reflecting a broad entrepreneurial scope. His early career included roles as a hedge fund analyst and venture investor, contributing to his strategic understanding of technology-driven business growth.
Education
Francisco Larrain holds academic credentials from prestigious institutions:
- Pontifical Catholic University of Chile
- Stanford Graduate School of Business (Executive education or MBA programs spanning 2002-2003 and 2007-2009).
He recently completed an International MBA from IE Business School in Madrid (graduated January 2025), indicating ongoing professional development and a commitment to expanding his business acumen.
Role and Responsibilities at Topsort
As CTO, Francisco is primarily responsible for overseeing the company’s core technology strategy and innovation. He leads engineering efforts that solve complex challenges associated with AI-based ad auctions, real-time bid evaluation, and integrating retail media infrastructure with minimal disruption. Topsort’s platform emphasizes:
- A low-code integration approach, enabling marketplaces and retailers to adopt retail media infrastructure in as little as one hour with minimal engineering resources, drastically lowering traditional adoption barriers such as long integration times and business disruption.
- Implementation of an AI auto-bidding algorithm to automate optimal ad placements and maximize advertisers’ return on ad spend (ROAS).
- Self-service and administration tools that provide clear insights into key advertising metrics (clicks, impressions, purchases), alongside real-time reporting dashboards that improve transparency and performance monitoring.
- Pioneering privacy-friendly advertising technology that operates without third-party cookies or invasive consumer tracking, targeting a more enjoyable and seamless shopping experience by reducing ad fatigue and interruptions.
Francisco’s leadership has been shaped by his experiences in markets across Latin America and the United States, maintaining strong relationships with key retailers and marketplaces in both regions. This bicontinental perspective informs Topsort’s product roadmap, emphasizing scalable, privacy-compliant retail media solutions that cater to both large enterprises and smaller, long-tail sellers.
Company Impact and Market Position
Under Francisco Larrain’s technical vision, Topsort supports prominent clients including Poshmark, Cencosud, Unilever, Coca-Cola, L’Oreal, General Mills, Glovo (Delivery Hero), and Phillips. The company’s AI-first retail media technology aligns with the rapidly expanding retail media market, expected to exceed $160 billion within several years, driven by brand demand for privacy-centric consumer engagement and marketplace monetization.
Topsort’s funding and technology platform position it as a leader innovating the transition to post-cookie retail advertising ecosystems. The company’s technology effectively reduces complexity and cost barriers for emerging marketplaces to establish retail media programs, enabling wider adoption and competitive parity with tech giants.
Additional Roles and Activities
Francisco also contributes to executive search and leadership advisory as a Managing Partner at N2Growth Executive Search Firm in Santiago, Chile, showing involvement in talent acquisition and organizational performance strategies outside of his CTO duties.
He is active in professional and entrepreneurial communities, including supporting Endeavor Chile on talent search and startup mentorship. Francisco’s keynote appearances, including at Topsort Developer Day 2025, reflect his role as a thought leader in technology and retail media innovation.
This profile synthesizes Francisco Larrain’s significant technical leadership, entrepreneurial track record, and strategic role in growing Topsort’s market influence through state-of-the-art AI-driven retail media solutions that tackle the challenges of the post-cookie advertising landscape while driving monetization for diverse marketplace clients globally.
