1. Mekkari Zakarya2. Drahmoun Wahid3. Bounabi Ilyes4. Rehahela Oussam2025-05-262024MM/859https://dspace.univ-bba.dz/handle/123456789/275In this dissertation, we focus on designing and implementing a platform that offers a unique experience for service providers, freelance contractors, and customers. Our platform, named "Khedemni," has been created to streamline service operations be tween providers and clients. Customers can search for the right professional for their required services, while service providers can showcase their offerings and interact directly with clients. Our platform features a secure payment system, acting as a financial intermediary between the two parties. Once a service is selected and requirements are set, the client pays an amount that is held until the service is completed. Our platform contributes to developing a safe and reliable environment for both parties. As a startup in the Algerian market, it brings mutual benefits to both service providers and customerfrMobile applicationsServiceUMLMoney transferStartupFlutterFirebaseFi nancial intermediaryDartPlatformSelf-employed contractorsCustomersKhademniService operationsClientsSecure environmentAlgerian marketDirect interactionDevelopmentFinancial securityThesis