Oskari Niemi is Manager of Process Excellence at Vaisala, where he leads the global implementation of Celonis and drives data-driven operational excellence initiatives. With over a decade of experience in business transformation, Oskari blends deep expertise in Lean Six Sigma, process mining, and predictive analytics. His background spans hands-on operational roles to advanced AI and data analytics, equipping him to bridge the gap between people, processes, and data. Passionate about turning insights into action, he believes real impact starts with understanding the story behind the data.