Java Developer (NCS/Job/ 2935)

We are seeking an experienced Java Developer with strong Kafka streaming skills to design, develop, and optimize real-time data processing systems. The ideal candidate will work closely with cross-functional teams to build scalable, resilient, and high-performance applications leveraging Java, Apache Kafka, and distributed system patterns.

Key Responsibilities

Core Development

• Design and develop Java-based microservices and backend components.
• Build, maintain, and optimize real-time streaming applications using Apache Kafka, Kafka Streams, or ksqlDB.
• Develop high‑performance, scalable, and fault-tolerant distributed applications.

Kafka Ecosystem

• Architect and manage Kafka clusters, topics, partitions, consumer groups, and stream processing pipelines.
• Implement Kafka producers/consumers, message schemas (Avro/JSON/Protobuf), error handling, and retries.
• Monitor and tune Kafka performance, throughput, and data retention strategies.

System Architecture

• Contribute to system design discussions focusing on event-driven and streaming architectures.
• Implement CI/CD pipelines, automated testing, and DevOps practices.
• Integrate Kafka with other systems like databases, cloud platforms, and internal microservices.

Collaboration

• Work closely with Product, Data Engineering, and DevOps teams to deliver end‑to‑end streaming solutions.
• Participate in code reviews, technical design sessions, and architecture discussions.

Required Skills & Qualifications

• Strong proficiency in Java (Java 8/11/17) and frameworks like Spring Boot.
• Hands-on experience with:
  • Apache Kafka
  • Kafka Streams / ksqlDB
  • Schema Registry (Confluent or equivalent)
  • Kafka Connect (optional but preferred)
• Experience in microservices architecture and RESTful services.
• Solid understanding of multithreading, collections, and JVM performance tuning.
• Familiarity with distributed systems concepts: partitioning, consistency, replication, failover.
• Experience with relational (MySQL/Postgres) or NoSQL databases.
• Knowledge of CI/CD pipelines, Docker, Kubernetes (nice to have).