I’m building a new product on AWS using PHP 8, React for web, and React Native for mobile. The front-end foundations are in place; where I need your expertise is the backend. Here’s what I need you to dive into: • API creation and integration – design RESTful (and, where it makes sense, GraphQL) endpoints, document them clearly, and make sure front-end clients can consume them with minimal friction. • User authentication and management – implement secure signup/login, token refresh, and role-based access control, ideally with best-practice libraries such as Laravel Sanctum or AWS Cognito if we decide to offload. • Data processing and storage – wire up efficient flows that read and write to MySQL, PostgreSQL, and the pg-vector extension for semantic search features. Proper indexing, migrations, and automated tests are expected. Tech context – PHP 8.x (Laravel preferred, open to Symphony) – React & React Native front-ends already consuming a small set of endpoints – AWS stack: EC2, RDS, S3, CloudWatch, with room for Lambda where serverless fits Deliverables & acceptance 1. Fully documented API endpoints pushed to our private Git repo and visible in Swagger/OpenAPI. 2. Auth module integrated, passing unit and integration tests, and deployed to staging via our GitHub Actions pipeline. 3. Data layer code with migrations, seeders, and pg-vector search prototype returning relevant results within agreed latency thresholds. 4. A concise hand-off note describing deployment steps and environment variables. If you’ve shipped production systems that combine PHP, React, MySQL/PostgreSQL, and AWS—and understand vector search basics—let’s talk timelines and milestones.