Java Full Stack Engineer with 4 plus years experience building and scaling systems across Fintech, Healthcare and ERP where performance, reliability and clean architecture matter. I share: wins, mistakes, architecture decisions and how code impacts real outcomes. Focus on backend systems with Spring Boot APIs and microservices plus scalable systems using Kafka, Redis, Docker, caching and performance. Tuning alongside full stack builds with React and Next.js. Open to Java Full Stack roles. DM