Ai Developer for Multilingual Ad Copy Generator Web Application

We are seeking an experienced AI and web developer to create a prototype for a multilingual ad copy generator. This web application will leverage AI to produce various advertising copy variations, including headlines, descriptions, and calls to action, in multiple languages.

Key features required:
- AI Ad Copy Generation: Users will input a product description or existing ad text to generate alternative ad content.
- Multilingual Support: The application must support English, Spanish, Portuguese, French, and potentially other languages, ensuring natural-sounding, localized content.
- Customization Options: Users should be able to select the target language, advertising tone (professional, friendly, persuasive, or creative), and the number of variations.
- Simple User Interface: The interface will include a text input field, dropdown menus for selections, a 'Generate' button, a clear results section, and copy-to-clipboard functionality.

Technical requirements include integrating an existing ai api (such as openai), using a lightweight technology stack, implementing basic error handling, and maintaining clean, maintainable code.

Deliverables include a fully working prototype with all specified features, complete source code delivered via GitHub, an organized project structure, and a comprehensive README file with setup and running instructions. The ideal candidate will have proven experience with AI APIs, web development, and GitHub.