Worked on enhancing the SCEPCal calorimeter geometry within the key4hep/k4geo repository, focusing on modular and scalable detector construction. Developed partial geometry construction and advanced visualization controls, enabling selective assembly of calorimeter staves and towers based on phi, theta, and gamma ranges. Refactored placement logic to improve maintainability and support future extensions, while introducing XML configuration files for detailed barrel segmentation. Leveraged C++ for both detector simulation and geometry construction, ensuring accurate modeling and faster iteration in simulation pipelines. The work established a robust foundation for precise geometry verification and streamlined analysis, addressing core requirements for detector development workflows.