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Ex-Facebook engineers launch Slashwork from stealth

Published: February 4, 2026 at 7:15 am

A trio of former Facebook engineers have launched a new startup from stealth to reimagine workplace communication.

Former Meta COO Sheryl Sandberg is among a series of high-profile investors backing Slashwork as part of a round of more than £2.5 million.

Founded by Jackson Gabbard (CEO), David Miller (CTO) and Josh Watzman (CEngO), engineers who all helped build and scale some of Facebook’s key products, Slashwork is now beta-testing with a small group of design partners. 

Julien Codorniou, who led Workplace before becoming an early-stage investor at 20VC, has overseen the incubation of the business and driven its investment and global go-to-market strategy to date. 

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