With a project like yours in need of a GUI or a website for Coinbase's Wallet API, my skills in Website Design would prove to be indispensable. I have a strong understanding of HTML, CSS, JavaScript and general web development principles. Moreover, my experience with WordPress and its customization, including WooCommerce, would be an added advantage as it aligns with your CMS requirement.
In addition to my web design skills, my understanding of graphic design can breathe life into the interface you seek. With tools like Adobe Creative Suite (Photoshop, Illustrator, InDesign), Figma, Sketch and Canva at my fingertips, I can create appealing visual elements essential for effective user interaction. I can ensure that users find your solution easy to navigate while optimizing their overall experience by wireframing and designing intuitive user flows.
Furthermore, my ability to collaborate effectively with cross-functional teams such as developers and product managers would enable me to seamlessly integrate Coinbase's Wallet API into the interface. My sound knowledge of APIs integration from previous projects will be an asset in successfully implementing vital features for buying/selling Bitcoin transactions.