Lightweight Browser-Based MVP Tool Development

I'm seeking an experienced developer to build a lightweight, browser-based MVP tool tailored for structured logic building, file upload and analysis, and data labeling.

The platform consists of three core modules:

- A drag-and-drop editor that exports structured data in JSON, YAML, or CSV formats.
- Must include customizable components, pre-built templates, and a live preview feature during editing.

- A file analysis tool that checks for issues and generates a report in PDF or JSON format.

- A data viewer equipped with a timeline-based labeling UI.

This tool will be utilized by technical teams within a niche industry and is not consumer-facing. Therefore, while AI, live control, and real-time execution are not necessary for the MVP, a clean design, high usability, and export accuracy are paramount.

You'll receive a clear feature list, and I will provide structure samples upon selection.

Ideal Skills and Experience:
- Proficient in React (or a similar frontend framework)
- Experienced in Python (for backend file processing)
- Background in developing visual editors or logic-building tools

Budget: $600 fixed
Bonus: Option for 3% equity for long-term collaboration