Build a Simple Web App with Nano Banana Pro API (Gemini 3 Pro Image) - 4K Export

Hello! I’m looking for a developer to build a simple web application for personal use, capable of connecting to Google’s Nano Banana PRO API (gemini-3-pro-image-preview model) and allowing me to generate images using artificial intelligence, which I can then export in 4K resolution.

This is an application for EXCLUSIVE USE. No multi-user system, no payments, no complex authentication. Just a simple, functional tool for me.

WHAT THE APP NEEDS TO DO:

1. A simple web interface where I can:
- Enter a text prompt
- Optionally upload 1–5 reference images
- Select the aspect ratio (1:1, 16:9, 9:16, 3:4)
- Click the ‘Generate’ button
- Make edits to the image (optional)

2. The backend calls the Nano Banana Pro API (gemini-3-pro-image-preview) using my API key

3. Display the generated image in the browser

4. Export/download the image in 4K resolution

5. Save a simple history of generated images (the last 50 will do)

TECHNOLOGY STACK (open to suggestions, but I prefer):
- Next.js + deployment on Vercel (free tier) or any other free hosting solution
- API key stored as an environment variable (NEVER exposed to the frontend)
- Vercel Blob or Supabase for image storage, or any other ideas you may have
- Clean and minimalist user interface (no need for an elaborate design, just make sure it’s functional)


TIMELINE: 1–2 weeks maximum

MANDATORY SELECTION TEST — APPLICATIONS WITHOUT THIS WILL BE IGNORED:

To apply, answer these 3 questions in your application:

1. What is the official name of the API model for Nano Banana Pro? (Hint: it starts with "gemini-")

2. Have you worked with the Google AI Studio API before?

Please also include:
- 2–3 examples of similar projects you have completed (preferably active links or GitHub repositories)
- How many days you will need to complete it

Applications without answers to the selection test will be automatically rejected.

Thank you, I look forward to working with the right person!