Worked on the koyeb/control-panel repository to refactor the Billing page, focusing on delivering an accurate and user-friendly display of database storage usage and associated costs. The approach involved introducing new React components and TypeScript enums to standardize units for usage and pricing, ensuring clarity and consistency across both desktop and mobile platforms. By differentiating database storage metrics from other usage types and adopting immutable variables for isDatabaseDataUsage, the changes improved billing accuracy and reduced user confusion. The work emphasized maintainability and code quality, leveraging front end development skills with JavaScript and TypeScript to enhance the overall billing experience.