Worked on the cbioportal-frontend repository, focusing on enhancing clinical data table usability and data clarity. Delivered a missing values visualization feature that introduced visual indicators for absent data, improving interpretability and user trust. Addressed data rendering issues by co-authoring a fix for missing-value display, ensuring accuracy and stability in clinical datasets. Later, implemented a sticky header for the Clinical Data tab, resolving header disappearance during scrolling and refactoring the code for maintainability and extensibility. All features were developed using React, JavaScript, and TypeScript, with attention to code quality, collaboration, and alignment with review feedback to support long-term project health.