Senior Java Developer

+1 571-556-1002 |naresh@sapphiresoftwaresolutions.comHiring Sr Java Developer-Only W2 || Hybrid NYC NYHi FolksPlease check the JD and share your updated resumeJDSr Java Developer1 year contract-Only W2Hybrid NYC NYCandidates who can do their 1st interview onsite will get preference. local candidates to NY/NJ areaRequired skills: Strong core Java expertise, Kafka, Java, SQL/PL-SQL and AWS. Hybrid role - NYCWe are seeking a Java Developer to design, build, and support enterprise-grade applications and services. The role requires strong core Java expertise, experience with EJB and Spring, Kafka and hands-on work with Oracle DB and MongoDB. You will also contribute to modern AI-enabled capabilities (Agentic AI) and performance optimization using Redis caching.Key Responsibilities: Design, develop, test, and maintain Java-based applications and APIs.Build and support components using EJB and Spring/Spring Boot (as applicable).Develop data access layers and optimize queries for Oracle DB; implement document models and queries for MongoDB.Implement and tune Redis caching strategies (e.g., read-through/write-through, TTL policies, cache invalidation).Integrate Agentic AI capabilities into applications (e.g., orchestrating agent workflows, tool/function calling, guardrails, observability).Required Skills & ExperienceStrong experience in Java (Core Java, OOP, Collections, Concurrency), KafkaHands-on experience with EJB (stateless/stateful beans, transactions, JPA integration where relevant).Strong experience with Spring Framework (preferably Spring Boot, Spring MVC, Spring Data).Solid experience with Oracle DB (SQL, PL/SQL basics, performance tuning, indexing).Experience with MongoDB (schema design, aggregation pipeline, indexing, performance considerations).Experience implementing Redis as a cache (data structures, eviction policies, clustering/sentinel awareness is a plus).Working knowledge of Agentic AI concepts and implementation patterns (agents, tools, orchestration, prompt/workflow design, evaluation).Familiarity with RESTful APIs, JSON, and integration patterns