Atsuo Koizumi

- Built AI-powered dApps using React.js, Nest.js, TypeScript, and blockchain integrations - Engineered decentralized features with Solidity, integrating smart contract data into frontend UIs - Developed microservices in Python for AI processing and Redis-based task queues - Streamlined Shopify and Bubble.io integrations for dynamic e-commerce functionality - Led frontend architecture using MUI and implemented advanced data handling with GraphQL

- Architected and developed full-stack web apps using Remix, Svelte, Shadcn UI, and Spring Boot - Delivered Web3 functionality through Solidity smart contracts and Rust-based modules - Integrated Redis for caching and real-time notifications across multiple systems - Led migration to serverless deployment with AWS Lambda and Vercel, improving scalability - Optimized GraphQL schema and API performance, reducing client query latency by 45%

- Led development of e-commerce frontends using React.js, Next.js, TypeScript, and Chakra UI - Designed scalable backend systems with Nest.js and PostgreSQL for subscription models - Increased test reliability by 50% through adoption of Jest and Cypress in CI workflows - Managed deployments via Docker and GitHub Actions, reducing release cycles by 30% - Mentored two junior developers, fostering a knowledge-sharing development culture

- Delivered customer-facing features using Vue.js, Nuxt.js, Tailwind CSS, and REST APIs - Implemented backend functionality in Node.js, Express.js, and MongoDB - Developed mobile-first solutions with Flutter and React Native for logistics and CRM platforms - Introduced Docker-based development workflows, reducing local environment issues by 40% - Built internal dashboards using Python and Django for real-time operational reporting

- Contributed to internal business tools using Java, Spring Boot, PHP, and MySQL - Assisted in developing and maintaining responsive UIs with Angular, JavaScript, and SCSS - Supported RESTful API integration and testing for internal service layers - Participated in Agile sprints and used Git and JIRA for source control and task tracking - Collaborated with QA to identify and resolve UI/logic bugs in cross-functional environments