The Leaders in Digital Trust & Safety

How Sift helps companies grow securely

Our mission: Help everyone trust the internet

We believe trust and safety are fundamental to every online interaction. As the pioneers of Digital Trust & Safety, we help more than 34,000 sites and apps navigate the fine balance between growing revenue and protecting their business.

We believe users are innocent until proven guilty. A business’s good customers should never be turned away or made to jump through hoops. We make it easy for companies to remove friction and delight their customers, while keeping bad actors out.

We believe legacy technologies are holding businesses back. We were the first to use machine learning for fraud prevention, and our customers see the results every day. The speed, accuracy, and scalability of our solution is unrivaled.

The time to change is now. Customer expectations are higher than ever. Competition is fierce. Fraudsters innovate and scale as fast as businesses. That’s why thousands of websites and apps, from digital disrupters to Fortune 500 companies, partner with Sift.

Leadership team

Marc Olesen
President & CEO

Marc’s operational experience and leadership helped Splunk, McAfee, and Dynatrace achieve scale during intense growth. He thrives in leading, connecting, and accomplishing great things as a team.

Jason Tan
Founder & Executive Chairman

Jason co-founded Sift in 2011 after a career as an engineer at various Seattle startups. He is passionate about great projects and people, and is constantly challenging himself and the Sift team to be better.

Eu-Gene Sung
Chief Financial Officer

Eu-Gene has led the finance function in organizations of different sizes and industries. She believes in the finance function being a driving force behind investing wisely and growing the business.

Beth Gillbrand
VP Business Operations

Beth leads business operations at Sift as well as the operations functions for marketing, sales, technical pre- and post-sales, and customer support. Her goal is to ensure that Sift has the right processes and tools to deliver great value to its customers.

Neeraj Gupta
SVP Engineering & Cloud Operations

Neeraj has led engineering, data management, product, and operations teams at companies of all sizes. He is a technologist and is passionate about building enterprise-grade, highly scalable platforms, and growing cohesive, diverse teams.

Geoff Huang
VP Product

Geoff has led product marketing at companies like RingCentral and VMware, with a focus on go-to-market execution. He is a strong believer in simplifying the complexity of disruptive technology.

Melissa Siems
VP Marketing

Melissa has led teams that grow sales and scale brand recognition for companies of all sizes. She believes in the power of marketing to connect a company with its customers, and light the way together.

Liz Kosinski
VP People Operations

Liz ensures the well-being of our most critical asset – our people. With experience in technical recruiting and people ops, she strives to build a culture where all are engaged, supported, and learning.

Eva Gutierrez
VP Legal and Compliance

Eva leads the legal and compliance team at Sift. She is a service-oriented business partner focused on helping Sift and its customers innovate and grow while minimizing risk.

Matt Camassa
SVP Worldwide Sales

Matt has a long track record of success in sales and go-to-market execution, driving companies towards scalable growth. He is a passionate leader who believes companies are only as excellent as the people they employ.

Kevin Lee
VP Digital Trust & Safety Advocacy

Kevin has led teams at Facebook, Square, and Google in various risk, spam, and trust and safety roles. He is driven by building high-performing teams and systems to combat malicious behavior.

Board members

Jeff Lieberman

Insight Partners

Marc Olesen


Jason Tan


Dione Hedgpeth

Sumo Logic


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