Custom OpenAI Expert Needed for Next.js App(Needed Serbian developer)

I'm looking for a [login to view URL] specialist with deep expertise in OpenAI to enhance a currently running application. The project primarily focuses on performance optimization, particularly in backend functionalities such as API integration and authentication/authorization systems. Key Responsibilities: - Optimizing the overall performance of the application - Enhancing API integration for seamless connectivity - Improving the authentication and authorization processes for better security and user experience Ideal Skills: - Proficiency in [login to view URL] - Extensive experience with OpenAI - Strong knowledge in API integration - Expertise in authentication and authorization processes The goal is to uplift the current application performance and make it more robust and efficient. Please provide prior examples of similar projects you have worked on.