As an experienced web developer, proficient in React.js and with a deep understanding of Python and Django, I am confident that I have the skills to deliver an exceptional custom form builder. Not only will I be able to implement the action buttons to add various elements, including both input boxes and select/dropdown, but I will also ensure that the order of addition is maintained.
Additionally, my skills in API development will allow me to create a smooth saving process where key-value pairs can be easily added as cards while ensuring the form gets cleared for a fresh start. My AWS and Azure experience will further guarantee a scalable, presentable, and user-friendly application, which addresses another critical aspect of your project.
Finally, noting your mention of 'form validations' as a plus point, you'll be pleased to know that my background in web app development encompasses strong expertise in this area too. I understand the importance of thorough validation processes to delivery suoerior data quality and would commit to integrating these standards seamlessly into the project. Trusting me with this project means relying on constant communication paired with top-notch technical skills, so let's take your custom form builder idea and bring it to life together!