Worked on the powsybl-open-rao repository to deliver targeted branch-level filtering within the contingency creation workflow for the CRAC module. This feature enables users to define criteria for selecting network branches, allowing for more focused and efficient contingency simulations by excluding irrelevant branches from analysis. The implementation, written in Java and leveraging core software development and testing skills, improves modeling fidelity and accelerates scenario analysis. All changes were consolidated into a single, traceable commit to enhance reproducibility and auditability. The work demonstrates a methodical approach to technical delivery, emphasizing maintainability and business value through precise, user-driven simulation capabilities.