Brian Joseff
Founder/CEOFounder at River (YC F26). Previously founder at Bedrock (2020-2023). Neuroscience researcher at Stanford School of Medicine. Founding team at Progressly (acquired by Box). BA Economics from Dartmouth. Semi-pro soccer stint.
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AI made software engineers 100x more productive. We're doing the same thing for knowledge work with the AI computer.
Founder at River (YC F26). Previously founder at Bedrock (2020-2023). Neuroscience researcher at Stanford School of Medicine. Founding team at Progressly (acquired by Box). BA Economics from Dartmouth. Semi-pro soccer stint.
Co-founder @ River (YC F26). Prev. SWE @ Roboflow (YC S20), Z Fellows, co-founder @ Outwork, UC Berkeley CS dropout
Founded 2026 · Source
Source-based assessment · automated evidence rules
The company website offers product access through a trial, free start, app download, purchase, or onboarding with existing-account login. Customer adoption is not established by this evidence.
Company website: home Checked 2026-09-20
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Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.