EQT Ventures, a provider of support and capital to founders on their journeys to global success, led a €12m Series A round in Sifflet, a data stack observability platform that delivers actionable insights to data engineers and data consumers. Paris-based Sifflet, which has raised €15m to date, plans to ramp up its go-to-market efforts in Europe, the Middle East, Asia and the US, and continue to invest in product and engineering. It currently has 28 employees and aims to more than double that number by the end of the year.