Nader Chargui

Refactored and optimized MySQL / MariaDB queries and stored procedures to improve performance and reliability. Built and maintained REST APIs using Node.js, TypeScript, and AWS Lambda within a serverless architecture. Applied OOP principles to improve code structure and maintainability. Improved application scalability and state management using Redux.

Trade Project — Online Sales Optimization • Refactored MySQL/MariaDB queries and stored procedures, improving query performance and system reliability • Built and maintained REST APIs using Node.js, TypeScript, and AWS Lambda within a serverless architecture • Improved scalability and state management using Redux HBS Project — Home Buying Services • Integrated and refactored REST APIs using AWS Lambda and DynamoDB • Designed reusable backend logic with TypeScript and OOP principles • Managed in-memory mock data to support dynamic forms and testing Market Project — Vehicle Pricing Estimation • Migrated frontend from React v16 to React v18, improving performance • Enhanced merchant-side business logic and pricing features • Documented migration process; worked with Redux, SCSS, Bootstrap, Axios

upgrade Project from version 16 to 18 Refactoring code and use creation procedure with Maria Db and implement view for select data For each usecase implement jest testing recover 70% with mock data in Memory implement service talk with Dynamodb Implement Card on project react display one week on year (schedule time) implement api and using the validation for each request and using Mapper for filter data Minimize number for request work with api private Send mail dynamique with service Aws SNS with traduction implement for each Api work with Monk data Make a document for the project and coverage all use cases parameter if api needed Figure of request for client Figure of response for Server