Designed & expanded high-performance SEO applications (Elixir/Ruby on Rails/ReactJS) for cross-device compatibility (30% improvement), enhanced user experience (20% boost).Led team in building microservices architecture with AWS Lambda & API Gateway, reducing infrastructure costs by 45%, improving performance by 55%.Streamlined deployment & reduced errors by 50% & 90% respectively through troubleshooting & stability initiatives.Implemented RESTful APIs, microservices architecture, caching strategies, and agile methodology for efficiency.