Marketplaces
10 two-sided marketplace trust and safety experts
These ten professionals have held trust and safety leadership roles at online marketplaces where two groups of users transact with each other. A reader can learn how trust and safety leaders build and run their teams at two-sided marketplaces.
Professionals to explore
01—10Abhay Antony
LinkedInExperience: Senior Director, Trust & Safety · Thumbtack
Senior Director, Trust & Safety at Thumbtack since October 2025, and former Director, Trust & Safety (2023–2025) and Head of Trust & Safety, Risk Analytics & Policy (2021–2023) at Thumbtack. The profile describes focusing on AI transformation of risk programs and systems for the marketplace, leading the Data / Risk Analytics and Program Management groups, and using LLMs and GenAI to catch bad actors.
Arely Miranda González
LinkedInExperience: Senior Director of Product, Trust & Safety, Risk & Fraud & Support · Etsy
Senior Director of Product, Trust & Safety, Risk & Fraud & Support at Etsy since March 2026. The profile also lists Etsy roles as Director of Product, Trust and Safety, Risk and Fraud & Support (2025–2026) and Director of Product, Trust and Safety (2024–2025), as well as Product Manager, Trust and Safety at YouTube (2017–2021).
Christopher Mommsen
LinkedInExperience: Director of Trust and Safety · Mercari US
Director of Trust and Safety at Mercari US since June 2023, and former Trust & Safety Senior Manager BPO Lead at Mercari US (2018–2023). The profile says the current role oversees the content moderation and payment risk (fraud) operations teams at Mercari, and lists reducing the cost of the Trust team by 60%+ without a decline in performance.
Dasha Rosenberg
LinkedInExperience: Director, Marketplace Integrity · Fiverr
Director, Marketplace Integrity at Fiverr since February 2026, also listed as Trust & Safety Group Manager at Fiverr since January 2024, and former Trust & Safety Policies Team Lead at Fiverr (2022–2024). The profile describes leading global Trust & Safety operations across Israel, Serbia and India, overseeing policy, moderation and integrity functions for a large-scale digital marketplace, and building global safety, risk and compliance workflows.
Derick Brady
LinkedInExperience: Head of Global Trust and Safety · Adevinta
Former Head of Global Trust and Safety at Adevinta (2021–2026) and Head of Fraud and Moderation at Kleinanzeigen since June 2025. The profile describes designing and scaling trust & safety strategies for global online marketplaces and leading global fraud and marketplace risk initiatives. It also lists Risk Manager at Kijiji Canada (2016–2021).
Diya Banerji Parial
LinkedInExperience: Director of Product, Trust and Safety · Airbnb
Head of Product Identity, Trust and Safety at Airbnb since January 2026 and former Director of Product, Trust and Safety at Airbnb (2023–2026). The profile also lists Director of Product, Payments Risk and Compliance at Airbnb (2019–2023) and describes an interest in how technology and teams can solve complex risk issues and protect communities, with a background in insurance, payments and risk management.
Eric Timmreck
LinkedInExperience: Head of Trust & Safety, Director · OfferUp
Former Head of Trust & Safety, Director at OfferUp (2021–2025). The profile credits the work as Director of Trust & Safety at OfferUp with reducing Bad Activity Rate by 92% and Account Takeovers by 96%, and describes transforming user safety operations through AI/ML implementations, cross-functional leadership and strategic vision.
Geneva McMahon
LinkedInExperience: Director, Trust & Safety Operations · Expedia Group
Director, Trust & Safety Operations at Expedia Group since April 2024, and former Director, Global Operations at Expedia Group (2020–2024). The profile describes heading Trust & Safety Operations for a leading global marketplace platform, with a focus on ensuring a trusted and safe experience, and leading global teams to protect travelers and strengthen marketplace integrity.
Mike Reiter-Skolnick
LinkedInExperience: Head of Trust & Safety · Whatnot
Former Head of Trust & Safety at Whatnot (2023–2024) and Head of Trust & Safety at Handshake since May 2024. The profile also lists Senior Director of Business Operations and Strategy, Trust and Safety at Twitch (2018–2023) and Product Lead, Solutions, Digital Rights Operations at Facebook (2017–2018).
Sophie Walsh
LinkedInExperience: Global Head of Trust & Safety · Depop
Global Director Trust & Safety at Depop since October 2025, and former Global Head of Trust & Safety at Depop (2023–2025). The profile also lists Global Deputy Director Integrity and Ethics (2020–2023) and Global Head of Risk & Assurance (2018–2020) at Oxfam, and Founder & CEO of INGO Good Practice Network (2017–2024).
Choose the right perspective
Match the person's function to your question, since a trust and safety product leader, an operations director and a policy lead each see different parts of the problem. Also consider the kind of marketplace they worked in, because risks on a peer-to-peer resale app differ from those on a travel or services platform.
Questions to take into the conversation
- 01How did you decide which fraud and safety risks to tackle first on the marketplace, and how did you measure progress?
- 02How did you balance automated detection with human review and moderation as volume grew?
- 03How did you keep trust and safety controls from adding too much friction for legitimate buyers and sellers?
Reaching two-sided marketplace trust and safety experts
How can I contact one of these two-sided marketplace trust and safety experts?
Pick one of the 10 people on this page and choose "Book a paid call", or describe your project to find others. You offer a fee for a 15-minute call or a written answer, Instant Expert finds the person's work email and sends the invitation, and they decide whether to accept. The list covers 10 companies, including Thumbtack, Etsy and Mercari US, based on profile data retrieved on October 3, 2026. Being listed here doesn't mean someone has agreed to take calls.
How much does it cost to reach two-sided marketplace trust and safety experts?
You choose the offer, starting at $5 per person. It includes Instant Expert's 20% fee, so an offer that pays the person $100 costs you $125. You're charged only when the person books the call or sends the answer.
What if they don't reply?
You pay nothing. Instant Expert sends follow-up reminders, and if the person hasn't booked or answered within 7 days, the request expires and any hold on your card is released. You can invite several of the 10 people on this list at once and cap your total spend, so you pay only for the ones who accept.
About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot and may describe past or present roles. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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