Open call: 15 PhD positions in ML and OR. The CoRDS Doctoral Network (Confident Data-Driven Decision Support) is recruiting 15 talented doctoral candidates across 9 European institutions to advance trustworthy, data-driven decision-making. Research topics span optimization (logistics networks, production scheduling, blood donation distribution) and machine learning (large language models, neural network verification), with a focus on fairness, explainability, and robustness. Learn more and view open positions at https://www.cords-dn.at/. Applications accepted through January 6, 2026.