Senior Full Stack Developer Needed to Audit and Modernize Existing React Native Startup App

Hello, I am the founder of a startup with an existing mobile application and full source code. The application was originally developed several years ago and now needs an experienced engineer to evaluate its current state. This is NOT a request to immediately rebuild the application. The first phase is a technical audit of the existing codebase to determine whether the application should be: * Refactored * Partially rebuilt * Completely rebuilt The selected developer should have experience working with legacy codebases, startup applications, mobile development, and scalable software architecture. Initial Deliverables * Review the existing codebase * Successfully set up and run the project * Evaluate code quality and maintainability * Identify technical debt * Review security and performance * Determine what components can be reused * Recommend Refactor vs. Rebuild (with reasoning) * Provide a phased development roadmap * Estimate cost and timeline for future development Required Skills * Full Stack Development * React Native (or similar mobile frameworks) * Node.js * JavaScript / TypeScript * REST APIs * Database Architecture * Git / GitHub * Code Refactoring * Mobile App Architecture Bonus Experience * Startup products * AI integrations * Marketplace platforms * Subscription applications * AWS or cloud infrastructure * Experience modernizing older applications **Important** The initial engagement is intended to be a paid technical audit (approximately 8–10 hours). If the audit goes well, I intend to continue working with the selected developer on a long-term basis to modernize and expand the platform. Please begin your proposal by answering these four questions: 1. How many existing applications have you audited and modernized? 2. Have you ever recommended rebuilding instead of refactoring? Why? 3. What would your process be for evaluating an existing codebase? 4. Please share examples of similar projects you’ve completed. I value honesty, communication, and long-term collaboration more than simply finding the lowest hourly rate. To confirm you’ve read this entire posting, please include the phrase “Blue Horizon” at the beginning of your proposal. Thank you.