Meet the team

Where Does Work Happen at Slack? A Look Into the Popular Communication Tool’s Org Chart

By Bessie Liu

Last updated: Feb 15, 2023

Slack is known as one of the fastest-growing startups, reaching $1B in valuation in just nine months of launching -- and without spending any money on traditional marketing. Now, the company is being acquired by Salesforce in a megadeal worth $27.7B. The Org has taken a look into the executive team of the startup unicorn that has changed workplace communication.

Slack's leadership team outside the New York Stock Exchange after the company went public in 2019. Image courtesy of Slack.
Slack's leadership team outside the New York Stock Exchange after the company went public in 2019. Image courtesy of Slack.

A graduate of the University of Pennsylvania, Yehoshua has previously served as VP of Advertising Technology at a former Amazon subsidiary -- A9. She later left to join Google, where she was the VP of Product and Engineering. She currently sits on the board of Yext, an AI Search Company.

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Slack CPO, Tamar Yehoshua. Image courtesy of Slack.

Overseeing the company’s finances is CFO Allen Shim. Another graduate from the University of Pennsylvania, Shim started his career as a Research Associate at Citi. He later joined research and brokerage firm AB Bernstein before joining Yahoo’s business operations team. Before joining Slack in 2014, Shim was the VP of Finance and Treasurer of YuMe, a marketing and advertising firm.

Allen Shim

Slack CFO, Allen Shim. Image courtesy of Slack.

As data privacy becomes a more significant concern, Slack onboarded its first CSO Sean Catlett in 2020. Catlett, an industry veteran, has previously served as Reddit’s CISO and was the CEO of Pharos Security, a computer and network security company headquartered in Toronto. The University of Texas graduate has also worked as SVP at the Bank of America and was the Global Head of Threat and Vulnerability Management at Barclays.

“With the global shift to remote work, the threat landscape is evolving faster than ever before,” Henderson said in a press release. “Our customers have complex and rigorous security needs, particularly those in the financial services, health care and government sectors. Sean’s leadership experience at financial services, consumer and enterprise companies, as well as his deep technical expertise, will make him an invaluable partner to our executive team and our customers.”

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Slack CSO, Sean Catlett. Image courtesy of Slack.

As Slack prepares for the post-pandemic world, the company is confident that remote work will not come to a halt and will continue to design its product to cater to the changing landscape of physical and virtual offices.

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