About Us

A different kind of company requires a different kind of person. Our team comes from companies large and small, both public and private. Solving problems is our passion and we have each made it our priority to be an Expert in our field.

Our Team

Carl Yost

Chairman / CEO

Carl Yost brings more than 25 years experience in business consulting to help clients transform …

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Randy Werder

President / Co-Founder

Randy Werder brings over 30 years of business and industry experience. He is Co-Founder of …

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Peter Popalis

Managing Partner, Canada

Peter was one of the founders of Ascend Partners, Canada’s largest and most successful OneStream …

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Damon Mittleider

Chief Product Officer

Damon is one of Black Diamonds founding partners and leads the Product Development Group. He …

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Janet Martinko

Managing Partner, EMEA

Janet was a former Managing Partner of Ascend, Canada’s largest and most successful OneStream partner. …

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Tami Chuang

Chief Customer Officer

Tami is one of Black Diamond’s founding partners and leads our Customer Success Group.  As …

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Colin Sawford

Managing Partner, Technology

Colin was one of the founders of Ascend Partners, Canada’s largest and most successful OneStream …

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Your Results Are What Matters

With dedicated one-on-one guidance, your Customer Success team helps you define solution goals and achieve them. As an extension of your team, we partner with you to continually evolve and optimize your OneStream investment. We target the key results that matter to your business and leverage Quarterly Business Reviews (QBR’s) to ensure alignment and focus.

User Adoption

Employee Engagement

Recognition

Leader Performance

Vision & Values

Retention

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We leverage the leading customer success organization to partner with Black Diamond on every engagement to ensure we achieve ongoing customer success with OneStream Software. We apply state of the art Customer Success technology to understand user adoption and proactively manage solution growth and satisfaction. From voice of the customer scoring to adoption playbooks we know how to continue to drive incremental value improvement.

Locations

Black Diamond operates out of Denver, New York, Chicago, Omaha, Kansas City, Pittsburgh, Atlanta, Charleston, Orlando, Toronto, Montreal, Calgary and London with immediate plans for California. Wherever you are, we're never far away!