ON SITE 3-4 DAYS A WEEK (NON-NEGOTIABLE AND MANDATORY) 10+ years backend engineering experience building enterprise distributed systems in Java environments Strong hands-on development with Java, Spring Boot, REST APIs, and Microservices architecture Deep experience with Apache Kafka including event streaming concepts, producers/consumers, and message architecture Experience with stream processing technologies such as Apache Flink, Apache Beam, or similar Proven ability designing event-driven ar