The Java Backend Lead/Architect will lead backend development using modern Java and Spring Boot, designing scalable, high-performance microservices following DDD and SOLID principles. This role involves optimizing concurrent and multi-threaded applications, ensuring clean code practices, and implementing robust API design with OpenAPI and REST. Responsibilities include working with Spring Cloud, Kubernetes, Docker, and CI/CD pipelines for cloud-native deployments. The Lead will also be responsible for implementing observability, monitoring, and logging solutions, managing RDBMS, NoSQL, caching, and messaging systems, and mentoring developers.