Niels Zeilemaker is Global CTO of Data & AI at Xebia, where he leads the company's data platform and GenAI strategy across international teams. He works at the intersection of architecture, applied AI, and client engagement — shaping offerings, guiding technical direction on complex data platforms, and translating emerging AI capabilities into things organizations can actually run in production. He's a hands-on technologist at heart, as comfortable in a Databricks notebook or an Azure architecture review as in a presales conversation.