Bubble Developer Needed to Build PDF Markup MVP / Prototype

Project Description
I’m looking for an experienced Bubble developer (or no-code expert with frontend and JavaScript experience) to create a rapid prototype (MVP) of a web app that allows users to upload, view, annotate, and measure scaled PDF drawings.

This tool will be used to test and validate a concept within the construction and design industry. It does not require final polish—just a functional prototype that allows for early user testing.

Key Features Needed in the MVP
Upload and display PDF drawings

Annotation tools: pen/freehand, arrows, highlighter, eraser, text, shapes

Add comment pins with threaded replies

Calibrate measurement scale: user selects two points and inputs real-world distance

Input drawing scale and measure off the PDF accurately

Save and/or export marked-up version of the drawing

Clean, simple UI with intuitive layout

Deliverables
Working prototype built in Bubble (or similar no-code platform)

Basic responsive interface with functional measurement tool

Ability for users to test key features as described above

Timeline
Looking for delivery within 3–5 weeks from project start

Ideal start: as soon as possible

Budget
Please submit a proposal with your quote (fixed price or hourly) and your estimated delivery timeline. The minimum budget will be honoured and adjusted appropriately based on your experience and the complexity involved.

What I Can Provide
Example interface layout (mockups provided)

Sample PDFs for testing

Clear feedback and direction throughout the project