I have spent the past 9 years honing my skills as a Senior AI & ML Engineer and Blockchain Development Expert, and from what you've described about your project, I genuinely believe I'm the right freelancer for you. Not only am I proficient in Python, which is essential for implementing a crypto payment processor, but my knowledge of HTML, CSS, and JavaScript ensures I have no issue creating the landing page and integrating the system.
Furthermore, in addition to being a web developer, I am also experienced in designing mobile apps across platforms including through Bubble.io. This could be beneficial if you're considering expanding into an accompanying mobile app.
Lastly, with my knowledge of cloud solutions such as AWS, Azure, and Google Cloud, integrating this crypto payment processor to your existing website should be a seamless process. Thanks for considering me for your project; I look forward to potentially working together on this exciting venture!