JS Widget Development for API Integration

I'm looking for a JavaScript expert to build a self-contained widget that connects to our APIs.

Key Requirements:
- Form Generation: Build a form based on API information.
- Field Validation: Dynamically determine required fields for validation and submission.
- Easy Installation: The widget should be easy to integrate into any web app, regardless of the framework (WordPress, jQuery, etc.).
- Compatibility: Should not alter any existing JS libraries from the calling site.
- Deployment Options: Must support both modal and inline display based on user config.
- Basic Styling: Should support basic styling and existing classes from the embedding page.

Ideal Skills and Experience:
- Proficient in JavaScript and API integration.
- Experience with building self-contained widgets.
- Strong understanding of front-end frameworks and compatibility issues.
- Good knowledge of form validation and dynamic field handling.
- Familiarity with WordPress and jQuery is a plus.

Please provide examples of similar work done.