David Kreston

Contributed to developing a next-generation ML tool with a visual modeler GUI for TensorFlow using React, Next.js, and Material UI. Incorporated Auth0 and AWS Cognito for secure user authentication and authorization. Implemented data visualization with D3.js and enhanced customer efficiency via drag and drop functionality. Integrated REST APIs from PyPi and TensorFlow using Redux and Redux Toolkit. Gamified user experience with UI animations. Ensured 70% test coverage using Jest and Cypress, improving code quality and reliability.

Developed and maintained cross-platform mobile applications using React Native and Expo for CaryRx, enabling seamless prescription management, same-day delivery scheduling, and real-time pharmacist communication. Engineered modern, scalable front-end interfaces in React for CaryConnect and OneDash, improving medication adherence tracking and health plan clinical gap management. Collaborated on Clair, an AI-powered clinical assistant, integrating Python-based backend services and Node.js APIs to deliver real-time clinical references and decision-support tools for healthcare professionals. Delivered high-performance, accessible, and responsive UI experiences aligned with WCAG standards and optimized for Core Web Vitals. Architected and consumed RESTful and GraphQL APIs, enabling efficient data exchange between mobile apps, front-end platforms, and backend services. Led end-to-end feature development in Agile/Scrum, actively participating in sprint planning, code reviews, and CI/CD pipeli

Built a real estate and property management web app using React.js, engineered core functionality leveraging Mapbox for dynamic property listings and pricing. Developed over 20 pixel-perfect, reusable UI components using React and Bootstrap. Contributed to front-end API client development with GraphQL and Apollo. Integrated Storyblok CMS for enhanced content management. Configured CI/CD pipelines using AWS CodePipeline and GitHub Actions for automated deployments.