As the Technical Lead, I am responsible for selecting the most optimal tech stack for each project. My key contributions include:AI-Based Quiz Engine: Developed a quiz engine leveraging user input data. Evaluated various technologies including GCP, Azure, OpenAI, and Watson X. Implemented a REST API integrated with OpenAI, used by a cross-platform application built in Flutter.Image Processing Neural Network: Created a neural network for real-time image enhancement and alteration, designed for an e-commerce environment. Integrated the solution into a Ktor-based backend, supporting both web and mobile applications.Work Management System: Developed a system for processing image/video editing orders with automatic job distribution via a load balancer based on worker capacity. The system includes workforce management features for managers and integrates with third-party payment systems.Project Estimation and Client Engagement: Provided project estimates and engaged with customers to clarify requirements and define project scope.Code Reviews and Best Practices: Conducted code reviews and established best practice standards to optimize code development.