We are seeking an experienced Java Backend Developer with strong Kafka expertise to join our team in Charlotte, NC. The ideal candidate will be responsible for building a robust and scalable integration framework that facilitates seamless communication between internal applications and external systems using REST APIs and Kafka-based messaging.

Key Responsibilities

• Design and develop integration frameworks using Java, Kafka, and REST APIs.

• Implement synchronous and asynchronous interactions with external systems.

• Build and enforce a centralized Validation Framework to ensure data integrity and compliance with business rules.

• Ensure scalability, resiliency, and performance of the system under varying load conditions.

• Apply best practices for handling:

  • Retry, Timeout, and Circuit Breaker patterns.

  • Duplicate or repeated messages/responses safely.

  • Graceful degradation during delays, outages, or external dependency failures.

• Monitor and log:

  • External API/Kafka response times

  • Error rates

  • Availability metrics

• Design support for API versioning and monitor deprecation of external services.

• Implement authentication, authorization, data validation, and encryption mechanisms to secure all external communications.

• Collaborate closely with architects, QA engineers, DevOps, and product teams to deliver high-quality solutions.

Technical Requirements

• 10+ years of professional software development experience.
• Expert in Java (8+) and Spring Boot frameworks.
• Strong experience with Apache Kafka and related streaming technologies.
• Solid understanding of RESTful API development and integration patterns.
• Experience implementing resilient and fault-tolerant microservices.
• Knowledge of data validation frameworks and exception handling strategies.
• Familiarity with OAuth2, JWT, and other modern authentication protocols.
• Proficiency in logging, monitoring, and observability tools (e.g., ELK, Prometheus, Grafana).
• Comfortable working in Agile/Scrum environments.
• Excellent problem-solving and communication skills.

Nice to Have

• Experience with cloud platforms (e.g., AWS, Azure, or GCP).
• Exposure to CI/CD pipelines and DevOps practices.
• Prior experience with versioning APIs and managing backward compatibility.
• Knowledge of data encryption and secure data transmission protocols.

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