I am Mahmudul Hasan Sazzad, a skilled Spring Boot and Flutter developer specializing in scalable backend systems and cross-platform applications. My expertise includes Core Java, Advanced Java, Spring Boot, Microservices, JWT, REST API, and Eureka. I develop Flutter apps for Android, Windows, and Web with seamless UI/UX. I have strong database skills in Oracle, PostgreSQL, MySQL, and MS SQL Server, along with experience in SonarQube, Redis, Jenkins, Git, Prometheus, Grafana, and Jasper Reports.