Led a 6-member cross-functional team and launched a Betting App and Web Platform using React, React Native, Next.js, NestJS, Tailwind CSS, and PostgreSQL. Built and deployed Android and iOS apps with React Native; integrated push notifications, biometric authentication, deep linking, and camera access to improve engagement. Developed and optimized interactive front-end components and scalable back-end systems via REST APIs and GraphQL. Applied AI-powered automation to improve product intelligence, user experience, and operational efficiency, including smart workflows, recommendation logic, data analysis, and AI-assisted development practices. Used Agile methodology with daily standups; implemented automated payments with Stripe; deployed to AWS (EC2, Route 53, Load Balancer); used Git and Jira to manage project workflows.

Staff Software Engineer at Ministry of National Guard - Health Affairs

July 1, 2016 - Present

Developed a booking platform using HTML, CSS, JavaScript, and Bootstrap; achieved a 20% rise in user engagement. Implemented responsive design with Bootstrap and dynamic UI interactions with jQuery across devices. Managed five simultaneous projects across various tech stacks, leading to a 40% reduction in user-reported bugs post-launch and improved user satisfaction. Ensured 100% on-time delivery. Worked with Sitefinity CMS, migrated content, and designed customized websites. Wrote high-quality code with 90% test coverage using React, Python, TypeScript, and jQuery; applied OOP principles to improve maintainability and scalability by 35%.

Junior Web Developer at Nakayama Technology Corporation

April 1, 2012 - Present

Built a Warehouse Management System with CRUD functionality, increasing data retrieval efficiency by 30%. Developed a responsive UI with HTML5, CSS3, Bootstrap, and JavaScript, accelerating navigation speed by 25%. Reduced server response time by 40% using AJAX and JSON API for precise reporting, enhancing accuracy by 20%. Implemented OOP principles, improving maintainability and scalability by 35%.