• Led the development team of the Meetruck logistic from SoftBank Corp, utilizing ReactJS, ExpressJS, Spring Boot, AWS, MySQL, Kubernetes and CI/CD pipelines to achieving a 99.9% uptime and support over 10 million users.• Utilized CI/CD pipeline for project deployment using Jenkins, CircleCI, AWS CodeDeploy, continuity of integration and deployment, enhancing development efficiency, and reducing deployment time by 50%.• Automated infrastructure provisioning and management for Tabist infrastructure setup using Terraform, achieving a significant reduction in configuration errors and reducing setup time from days to hours.• Implemented a robust search engine and full-text search functionality for the Meetruck logistic using Elasticsearch, resulting in a 30% reduction in retrieval time and increased the number of booking orders to over 100K/day.• Created detailed monitoring dashboards for system monitoring using Datadog APM, significantly reducing the time to identify and resolve performance issues dramatically.• Leveraged Kubernetes for the system deployment and management, ensuring scalable and reliable infrastructure for all the applications, which led to a 60% reduction in deployment times and a 70% improvement in system uptime.• Designed and deployed an auto-scaling infrastructure for Wework landing page using AWS Elastic Load Balancer (ELB) and Auto Scaling Group (ASG), high availability and handle high traffic loads with over 500K visits per day.• Developed a structured version control system for code management using Git, improving code collaboration and reducing integration conflicts.• Configured a content delivery network for the Wework landing page using AWS CloudFront to cache static data, reducing latency and improving load times for global users by over 5 times improvement.• Implemented an event-driven architecture for microservices using Java Spring Boot, AWS SNS and SQS, ensuring reliable message delivery and supporting a 15% boost in revenue.

• Designed, Developed and deployed Sapo Express application using Spring Boot, ReactJS and MySQL, contributing to a revenue increase of over $30K per month.• Implemented caching strategies for the API services using Redis, drop retrieval response times to 1-2 milliseconds. • Optimized database performance for the application by adding appropriate MySQL indexing, reducing SQL queries response times to a few milliseconds and improving overall database efficiency.• Engineered a RESTful API with NodeJS, and ExpressJS to optimizing endpoints and reducing response times. Developed a SPA with ReactJS, improving load speed and user engagement.