Java Migration (NCS/Job/ 2165)

We are undertaking a strategic migration of our legacy application from Java 8 to Java 18, along with a Spring Boot upgrade. This initiative aims to modernize our tech stack, improve performance, security, and maintainability. We are looking for a skilled Java Developer who understands the nuances of Java version upgrades and has hands-on experience with modern enterprise application development.

Key Responsibilities:

• Lead and contribute to the migration of applications from Java 8 to Java 18.
• Upgrade and refactor Spring Boot components to align with the latest standards.
• Design and develop microservices using Spring Boot and RESTful APIs.
• Implement authentication and authorization mechanisms using OAuth2, JWT, and HTTPS/SSL.
• Integrate with messaging systems like Apache Kafka.
• Work with Oracle DB and ORM tools (e.g., Hibernate, JPA) for data persistence.
• Containerize applications using Docker and deploy to AWS (basic knowledge required).
• Collaborate with DevOps teams to ensure CI/CD pipelines and basic infrastructure automation.
• Write unit and integration tests using JUnit and Mocha.
• Apply JavaScript for frontend or integration tasks as needed.
• Ensure code quality, security, and performance throughout the migration process.

Required Skills & Experience:

• Core Java (Java 8 to Java 18): Deep understanding of language features, performance improvements, and deprecated APIs.
• Spring Boot: Experience with upgrading and building microservices.
• ORM Tools: Hibernate, JPA or similar.
• DevOps (Basic): Familiarity with CI/CD, Docker, and basic AWS services.
• Kafka: Experience with event-driven architecture and messaging.
• AWS (Basic): EC2, S3, IAM, and deployment basics.
• Oracle DB: SQL, PL/SQL, and performance tuning.
• Security: OAuth2, JWT, HTTPS/SSL.
• JavaScript: Basic scripting and integration.
• Unit Testing: JUnit, Mocha.
• REST API & Microservices: Design, development, and documentation.