Public company, workplace, funding, and market signals
Updated Aug 16, 2026
Topsort is a privately held commerce-media infrastructure company that helps marketplaces, retailers, delivery apps, and other commerce platforms launch and operate privacy-first retail-media networks. Its technology provides auctioning, ranking, ad serving, campaign management, attribution, analytics, and AI-powered optimization across onsite, offsite, display, video, and in-store channels.
Primary product
T-Platform, an API-first retail-media infrastructure platform combining real-time auctions, ad serving, sponsored listings, display and video advertising, advertiser workflows, analytics, attribution, billing, and AI optimization.
Founded
2021
Headquarters
Palo Alto, California, United States
Team size
100-150
Work style
Flexible
Industry
Technology, Information and Internet
Sub-industry
Retail media infrastructure and advertising technology
Offices
Business model
Stage
Series A / growth-stage private company
Total raised
$28.6M
Latest round
Strategic investment / venture round from W23 Global · Nov 2025
Strategic investment / venture round
Nov 2025 · W23 Global
Strategic corporate investment
Jul 2024 · Moloco
Mar 2024 · Upload Ventures
Mar 2022
Leadership
Co-Founder and CEO
Co-Founder and CTO
Michael Ostrovsky
Co-Founder and Chief Scientist
Pedro Almeida
Head of Sales
Robert Cooper
HR and People Lead
Alexey Stysin
Data Science Tech Lead
Aldo Levrini
Director of Finance
Christine Lu
Growth and Strategy Lead
Francisco Bulnes Amaya
Design Lead
Martin Koch
Director of Sales, DACH
Pablo Reszczynski
Tech Lead Engineer
Ricardo Zilleruelo
Principal Engineer
Stefano Biondi
General Manager, UK
Public recruiting materials describe Topsort as a global, engineering-led, remote-first or flexible company with employees across more than a dozen countries. The company emphasizes customer focus, technical ownership, direct access to executives, collaboration across sales/product/engineering, continuous improvement, individuality, and building privacy-first advertising infrastructure. The company says approximately 70% of headcount is dedicated to product development and engineering.
Work style
Flexible
Compensation
Public evidence indicates company equity and performance bonuses. No reliable public salary bands were identified. A third-party careers source reports no H-1B petition history, but this is not sufficient to establish a definitive company-wide sponsorship policy.
Benefits
Pricing
Custom enterprise pricing; public materials offer a free sandbox and personalized onboarding but do not publish production pricing. Commercial pricing may be tied to platform usage, advertising spend, campaign volume, or negotiated enterprise contracts.
Differentiators
Technology
Customers
Competitors
Estimated revenue
Approximately $3.7M-$6M annual revenue/ARR based on third-party estimates; not company-reported and inconsistent across providers.
Estimated monthly visits
39.9K
Traffic estimate as of Jun 2026
Topsort announced its acquisition of UK-based Phuzion Media, its first reported acquisition, to establish a UK retail-media presence. Phuzion co-founder Stefano Biondi was appointed General Manager UK. Terms were not publicly disclosed.
SourceMoloco made an undisclosed strategic investment in Topsort while the companies remained direct competitors. The transaction followed Topsort's Series A and included integration of Moloco's machine-learning technology.
SourceW23 Global announced an undisclosed investment in Topsort. W23 is backed by Tesco, Ahold Delhaize, Woolworths Group, Empire/Sobeys, and Shoprite Group. The investment increases strategic exposure to major grocery retailers, but its amount and terms were not disclosed.
SourcePPC Land · Oct 2025
Topsort announced the acquisition of UK-based Phuzion Media and appointed its co-founder Stefano Biondi as General Manager UK. The transaction was described as Topsort's first acquisition; financial terms were not disclosed.
Topsort · Sep 2025
Topsort announced a partnership with Skai giving advertisers access to Topsort-powered retail-media inventory across more than 40 countries through Skai's commerce-media platform.
AdExchanger · Jul 2024
Moloco made an undisclosed investment in Topsort and agreed to integrate its machine-learning and personalization technology into Topsort's platform. The article characterized the companies as direct competitors.
PR Newswire · Mar 2024
Topsort announced a $20M Series A led by Upload Ventures, with Quiet Capital and Pear Ventures participating, at a reported $150M valuation. The announcement said total funding reached approximately $28.6M including the prior seed round.
TechCrunch · Mar 2024
TechCrunch described Topsort's auction-based retail-media infrastructure, customer growth, shift toward enterprise customers, and Series A financing. It identified Poshmark, Youtravel.me, P&G, General Mills, and Danone among customers or users.
5 jobs at Topsort