Java Engineer

Position: Java Engineer Location: Onsite - 5 Days/Week (O'Fallon, Missouri or NYC, NY) Type: Full-Time Employee (FTE) Openings: 5 urgent positions Interview Mode: Local candidates must be available for in-person interviews We're seeking experienced Java Engineers for multiple full-time openings onsite at Client. The ideal candidate is an expert in backend development with deep experience in Java, microservices, and cloud-native technologies. This is a highly technical role ideal for senior developers or leads passionate about solving complex problems in a fast-paced environment. Key Responsibilities: Design, develop, and maintain scalable Java-based applications and services. Create and manage RESTful APIs and microservices architectures. Collaborate with DevOps teams to deploy and manage cloud-native applications (AWS, Azure, or PCF). Write complex SQL queries and optimize performance for Oracle databases. Integrate with various tools including Kafka , Redis , Cassandra , Zookeeper , and Splunk . Apply software engineering principles such as SOLID , DRY , and design patterns . Drive end-to-end development life cycle, including code reviews , unit testing , and deployment . Work closely with cross-functional teams and lead initiatives for platform improvement. Must-Have Skills: 8+ years of Java development experience (J2EE) Strong in REST API and Microservices development Advanced knowledge of Oracle and SQL Cloud platform experience (AWS / Azure / PCF) Strong understanding of design principles (SOLID, DRY) Experience with tools: Kafka , NiFi , Redis , Cassandra , Zookeeper , NATS , Splunk Excellent debugging and performance optimization skills Strong verbal and written communication skills Nice-to-Have: Experience simplifying and creating common libraries/interfaces Background in financial services or enterprise-scale platforms Previous experience working in Client or similar enterprise environments