Full-Time
Posted on 9/9/2025
Self-service retail media platform for ads
No salary listed
Cambridge, MA, USA
In Person
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Topsort provides self-service advertising solutions for e-commerce retailers and consumer packaged goods (CPG) brands. It operates in the retail media space by letting brands place ads inside online retail platforms, using sponsored product listings and banner ads to reach shoppers where they browse. The product is an API-based platform with a user-friendly interface that lets clients manage campaigns, formats, and budgets, while Topsort’s ML/AI optimize ad placements to improve click-through and conversion rates. Revenue comes from a mix of subscriptions and performance-based pricing, and integration ease with existing systems helps clients scale retail media efforts. Topsort differentiates itself through a flexible, API-centric solution that enables highly relevant, optimized ads across channels, aiming to boost return on ad spend (ROAS), margins, and overall ad revenue for e-commerce and CPG brands.
Company Size
51-200
Company Stage
Series A
Total Funding
$28M
Headquarters
Palo Alto, California
Founded
2021
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Professional Development Budget
Flexible Work Hours
Hybrid Work Options
Employee Social Events
Topsort, an AI-native retail media infrastructure company, has launched Tomi, an AI agent that enables marketplaces to create and manage sponsored listing campaigns using natural language. The tool allows users to describe campaign objectives conversationally rather than manually configuring settings. Embedded within Topsort's marketplace admin interface, Tomi can identify products, configure campaign settings, apply targeting rules and set budgets based on plain-language prompts. The company claims teams can launch campaigns up to five times faster whilst maintaining full control through review and approval workflows. Tomi currently supports keyword, category, competitor-page and always-on targeting strategies for onsite sponsored listing campaigns. The tool is available to Topsort customers by request. Topsort provides monetisation infrastructure to enterprises including Coles, DoorDash and Woolworths across more than 40 countries.
Topsort, a San Francisco-based AI and auction-based retail media infrastructure company, received an undisclosed investment from W23 Global. The funds will be used to expand operations and development efforts. Topsort, led by CEO Regina Ye, launched three major products in 2025: Toppie, Instore Journey, and Toptimize. The company collaborates with international retailers like Poshmark and Doordash, operates in 13 countries, and serves customers in over 40 countries worldwide.
Topsort acquired UK-based Phuzion Media on October 15, 2025, marking its entry into the UK retail media market. Stefano Biondi, cofounder of Phuzion Media, will lead the expansion as General Manager UK. The UK market saw £1.5 billion in retail media spending in the first half of 2025, with programmatic trading making up 78% of digital display spend. UK digital advertising is projected to reach £45 billion by 2026, with retail media as a key growth driver.
Topsort makes its first M&A move, completes purchase of Phuzion Media and appoints General Manager UK. 14 October 2025 - Topsort, an artificial intelligence (AI) and auction-based retail media infrastructure company that democratizes and innovates a privacy-centric ad technology for retailers, superapps and marketplaces, today announced its first-ever acquisition in the space, UK-based Phuzion Media, and appoints its cofounder Stefano Biondi as the General Manager UK. Topsort has already been winning over iconic retailers across the world, as announced earlier this year, including Coles and a host of others. The move marks Topsort's formal expansion into the UK market with local talent and support, aiming to grow in one of the most advanced retail media landscapes globally, and underscores the company's ambition to become the trustedretail media partner for retailers and marketplaces worldwide. Phuzion Media, a company focused on making offline retail media measurable using image recognition has worked with Tesco, Waitrose, Boots, Marks & Spencer, Very, and Argos, amongst some of the UK's largest and most respected retailers, providing a strong foundation of client relationships and market knowledge that will accelerate Topsort's entry. As part of the acquisition, Stefano Biondi, cofounder of Phuzion Media, will be appointed asGeneral Manager UK at Topsort and will be leading the company's expansion and go-to-market efforts in the UK markets "Topsort was born global from day one and what amazes us is how the challenges differ and stay consistent on a daily basis across the vast diversity of retailers we work with. The UK is both a familiar and new market for us across the pond as a Silicon Valley-born company, and home to many iconic retailers and legends in the retail media world," said Topsort CEO Regina Ye. "We are excited to partner with true entrepreneurs and forward-thinking minds on the ground and level up our support and footprint in the UK market." "Joining Topsort is a natural evolution of Phuzion Media's journey. Retailers here are looking for partners who can help them build sustainable, future-proof retail media businesses," said Stefano Biondi. "Topsort's transparent, auction-first model is exactly what the UK market needs, and I'm excited to help write the next chapter of growth." Founded in Silicon Valley, Topsort has been expanding in the enterprise retail media market as the global leader in providing best-in-class AI technology in ad monetization. It's designed for simplicity, fairness, and transparency. Unlike traditional adtech solutions burdened with complexity and privacy challenges, Topsort empowers retailers and marketplaces to monetise their traffic without compromising user experience Topsort already works with leading global retailers and marketplaces, including DoorDash, Poshmark, Coles, LG, and has seen rapid adoption in 40+ markets globally between brands and retailers. The UK launch builds on this momentum and positions Topsort as a credible global challenger to incumbent platforms. With the addition of Phuzion Media and a dedicated UK leadership presence, Topsort is well-positioned to deliver on its vision of helping retailers worldwide unlock the full potential of retail media, without the baggage of legacy adtech. About Topsort. Topsort is an AI-based retail media infrastructure company with a mission to democratize walled garden ad technology into infrastructure products for retailers and marketplaces worldwide. Today, Topsort works with international retailers and marketplaces such as Poshmark, Doordash, JustEatTakeaway, Cencosud, and LG, and has a team based in 13 countries and customers in 40+ countries worldwide. Book a demo with Topsort today.
Topsort, Breuninger partner to redefine luxury Retail Media in Europe. Topsort 6 days ago comments off on Topsort, Breuninger partner to redefine luxury Retail Media in Europe. As Topsort continues to power retail media across the European market, the company partners with leading luxury fashion retailer Breuninger to upgrade its existing retail media infrastructure Topsort, an artificial intelligence (AI) and auction-based retail media infrastructure company that aims to democratize Silicon Valley's monetization secrets to retailers and marketplaces, today announced its partnership with luxury European fashion and lifestyle company E. Breuninger GmbH & Co. The collaboration marks a significant step in elevating the retail media experience for both shoppers and brand partners in the luxury space. Breuninger, renowned for its premium brand curation and exceptional customer experience, operates 13 department stores across Germany and Luxembourg, as well as a thriving e-commerce business serving multiple European countries. This partnership reinforces Topsort's growing presence in the European luxury retail media market, comparable to powering retail media for Saks Fifth Avenue or Nordstrom in the U.S. From summer 2025 onwards, Breuninger runs its retail media operations using Topsort's sponsored listings and banner ads. This enables the retailer to introduce a new level of monetization while ensuring: * A Luxury Experience First: The partnership is focused on delivering high-quality, relevant advertising experiences that reflect Breuninger's long-established reputation for carefully curated premium and luxury brands. By upholding rigorous standards for brand safety and customer experience, both companies are committed to exceptional luxury shopping experiences that define Breuninger. * A Seamless Transition: The rollout will begin with select ad formats, allowing for a gradual and controlled shift from Breuninger's previous retail media platform. This phased approach ensures a smooth experience for brands and shoppers while establishing a solid foundation for future growth. * Flexibility for Every Partner: Topsort's model combines managed service for strategic brand accounts with intuitive self-service options for long-tail vendors. This hybrid approach allows Breuninger to scale efficiently, supporting both established luxury labels and emerging designers on its platform. "Partnering with Breuninger underscores Topsort's ability to meet the highest expectations of global retail media, where brand safety, customer experience, and innovation must come together seamlessly," said Regina Ye, CEO and co-founder of Topsort. "This collaboration sets a new benchmark for how luxury retailers can unlock revenue while delivering meaningful, relevant experiences for their shoppers and brand partners." Together with Topsort we strive to become the leading destination for premium and luxury retail media in the German speaking regions. Leveraging our first party data for endemic and non-endemic brands, in combination with our omnichannel capabilities, we want to position ourselves as a partner for brand building," said Daniel Grafe, Director Retail Media & Brand Cooperations at Breuninger. Topsort is an AI-based retail media infrastructure company with a mission to democratize walled garden ad technology into infrastructure products for retailers and marketplaces worldwide. Today, Topsort works with international retailers and marketplaces such as Poshmark, Doordash, JustEatTakeaway, Cencosud, and LG, and has a team based in 13 countries and customers in 40+ countries worldwide. Book a demo with Topsort today. The fashion and lifestyle company Breuninger was founded in 1881 by Eduard Breuninger and is now one of the leading omnichannel department stores in Europe. For over 140 years, Breuninger has set high standards in the areas of fashion, beauty, and lifestyle with an exclusive selection of international designer brands and select newcomer brands. The online shop www.breuninger.com, launched in 2008, is one of the most successful in the premium segment and is also available in Austria, Switzerland, Poland, the Czech Republic, Belgium, the Netherlands, Luxembourg, Spain, and Italy. In addition to a sense of style and a flair for trends, Breuninger stands for a strong customer focus: Services such as Special Service, the in-house tailoring studio, Click & Collect and online reservations, the in-store ordering service, and the shuttle service ensure a unique shopping experience both in-store and online. Breuninger now operates 13 stores in Germany and Luxembourg with around 6,500 employees.