Backend Services And Distributed Systems Architect Design and build backend services with JDK 21, Spring Boot, and microservices; implement RESTful APIs, messaging, and inter-service communication. Architect and implement distributed systems on AWS (e.g., EC2/Lambda, API Gateway, S3, RDS/DynamoDB, SNS/SQS, CloudWatch); drive scalability, reliability, and cost efficiency. Develop web applications using Java, J2EE, JSP, Servlets, JSF, HTML5, and more.