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Salsa provides payroll infrastructure and APIs that businesses can integrate into their software.
Salsa Software is a payroll infrastructure company based in San Francisco, US, founded in 2021 by John Kramer and Juan Barroso. Its platform provides payroll APIs and configurable tools that let businesses embed payroll workflows and manage employee payments and compliance. In April 2025, it raised USD 20 million in Series A funding led by Altos Ventures and SemperVirens Venture Capital, with Greycroft Partners, Definition Capital, and Better Tomorrow Ventures participating.
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