Java Developer (Kotlin / Vert.X / RxJava)

Overview: Position: Java Developer (Kotlin / Vert.X / RxJava) Location: Phoenix, AZ (Onsite) Employment Type: Contract Role Summary: We are seeking an experienced Java Developer with strong expertise in Kotlin, Vert.X, and RxJava frameworks to design and develop scalable, high-performance applications. The ideal candidate will have deep technical proficiency in Java/J2EE and Spring Boot, along with a willingness to explore Large Language Models (LLMs) and Generative AI technologies. Key Responsibilities:Design and develop high-performing, distributed applications using Java/J2EE, Kotlin, Vert.X, and RxJava.Build and optimize RESTful APIs and microservices architecture.Collaborate with cross-functional teams to develop, test, and deploy robust backend solutions.Work with JSON, Web Services, and complex data structures for integration and interoperability.Participate in the full SDLC-design, development, testing, deployment, and support.Apply best practices in code quality, version control (GIT), and CI/CD automation.Work with SQL and NoSQL databases such as Oracle, DB2, Cassandra, and Couchbase.Implement automated testing using Selenium, REST Assured, and Cucumber.Leverage JIRA/Rally and Agile methodologies for sprint planning and progress tracking.Stay updated with emerging technologies like Generative AI and integrate them into business solutions. Required Skills & Experience:6-10 years of software development experience.Strong proficiency in Java/J2EE, Spring Boot, Vert.X, RxJava, and Kotlin.Hands-on experience in REST API development and integration.Deep understanding of JSON, Web Services, and multi-tier distributed systems.Knowledge of object-oriented design principles and code optimization techniques.Experience with SQL and NoSQL databases (Oracle, DB2, Cassandra, Couchbase).Proficient in CI/CD tools such as Jenkins, Maven, Nexus, and GIT.Strong understanding of test automation frameworks and tools.Familiarity with Agile development methodologies and lifecycle management tools (JIRA, Rally). Nice to Have:Exposure to LLMs (Large Language Models) and Generative AI projects.Experience with containerization technologies such as Docker and Kubernetes.Familiarity with cloud platforms (AWS, GCP, or Azure).