Senior Full-Stack Developer to Complete Existing eBay Listing SaaS (Next.js / AWS)

Deploy and Continue Development of Existing AI-Powered eBay Auto-Listing Website — $500 Fixed Price Project Overview We have an existing AI-powered automotive parts listing application that was developed by a previous programmer but never fully completed or deployed. We already have the source code. We are NOT looking to build a new application from scratch. The existing codebase includes: Next.js, React, TypeScript frontend and backend PostgreSQL database AWS infrastructure configuration User authentication Photo uploads AI/OCR part-number recognition eBay API integration Listing draft generation Separate AI photo editing code A detailed technical audit is available. We are looking for an experienced developer who can take the existing code and turn it into a working, hosted website that we can access, test, and continue developing. First Milestone — $500 Fixed Price Our goal is a functional online development version of the application, not just a technical report or a local demonstration. Required Work Review the existing source code and identify the correct application to deploy. Set up the application on a suitable cloud hosting environment, preferably using the existing architecture without unnecessary rewriting. Deploy it to a real HTTPS URL, accessible from any computer with authorized login credentials. Configure the database, authentication, image storage, and essential environment variables in a secure staging environment. Make the existing user dashboard accessible and functional. Enable real photo uploads, persistent storage, and display of uploaded images. Connect and demonstrate the existing AI/OCR and listing draft functionality where technically possible. Identify any additional work required to complete these workflows. Fix the essential issues that prevent initial deployment and basic use of the website. Provide access to the deployed website, source code, hosting configuration, and clear instructions for future development. Acceptance Criteria We will consider the first milestone completed when: The website is accessible through a real HTTPS URL. We can sign in using an authorized test account. We can upload sample automotive parts photographs and see them saved after refreshing the page. The existing listing workflow is accessible, and any functional AI/OCR or draft-generation features are demonstrated. The deployment is reproducible and documented. The application and infrastructure are under our control. All completed changes are committed to our private GitHub repository. The site must use a real backend and persistent storage, not just a static design prototype. Before accepting the contract, please confirm exactly which features you can deliver within the $500 budget. Any functionality that cannot be completed within this milestone must be identified and agreed upon in advance. Important Requirements No production eBay listing creation, modification, or deletion without explicit approval. Do not deploy known unsafe functionality publicly. Use password-protected or otherwise restricted staging access. Hosting, domain, database, and third-party service accounts must belong to us. Any ongoing hosting or API costs must be disclosed and approved in advance. Project-specific code and deliverables must be assigned to the agreed project owner under the contract. Do not rebuild the existing application unnecessarily. Future Work After the website is deployed, we intend to continue development through separate paid milestones: Improve AI/OCR accuracy and photo processing. Complete eBay listing creation and publishing. Fix existing bugs and improve reliability. Integrate AI photo editing. Develop the commercial website and subscription system. Add administrative functionality and user management. We are looking for a developer who can complete this initial deployment and potentially continue working on the project long-term. Budget: $500 fixed price for the initial deployment milestone. Please begin your proposal with "AUTO LIST" and explain your experience deploying existing Next.js applications with databases and AWS.