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Job DescriptionJob Description Overview CTG is seeking to fill a Senior Java Backend Engineer opening for our client in Whippany, NJ. Location: Whippany, NJ Duration: 12 months Overview: We're looking for a Senior Java Backend Engineer to join our team and build high-performance, scalable backend systems. The ideal candidate has deep experience with Java 11+, multithreading, and performance optimization, and is comfortable working in event-driven and microservices-based environments. You'll work with a modern stack including Spring Boot, Kafka, JPA/Hibernate, and CI/CD tools, and be responsible for designing and developing REST APIs, integrating with databases (SQL and MongoDB), and monitoring application health using tools like AppDynamics and Kubernetes. Duties: Design, develop, and optimize high-performance Java applications using Java 11+ and Spring Boot Identify and resolve performance bottlenecks in large-scale distributed systems Conduct memory, CPU, and thread profiling using tools such as JProfiler or VisualVM Collaborate with cross-functional teams to define and refine performance requirements Analyze and optimize multithreading and concurrency implementations Develop and maintain RESTful APIs and integrate with back-end systems using SQL, JDBC, and ORM tools like Hibernate/JPA Create performance test plans using JMeter or LoadRunner to validate system scalability Monitor applications using tools like AppDynamics to ensure system reliability in production Support CI/CD pipelines with tools such as Maven, Git, and Jenkins Deploy and manage Java-based applications in cloud- environments (OpenShift/Kubernetes ) Skills: Java 11+ Multithreading and Concurrency Performance Optimization and Profiling (JProfiler, VisualVM) Spring Boot / Spring Framework RESTful API Development SQL / JDBC / Oracle / MS SQL Hibernate / JPA JUnit / Mockito Kafka / Event-driven Architecture XML / JSON Processing Application Monitoring (AppDynamics) CI/CD tools: Maven, Git, Jenkins Pipelines MongoDB Performance Testing: JMeter, LoadRunner OpenShift / Kubernetes (nice to have) Experience: 8+ years of hands-on experience as a Java developer with a focus on performance optimization and scalable system design Proven ability to troubleshoot complex performance issues in enterprise-grade applications Demonstrated expertise working in Agile software development environments Experience deploying applications in containerized/cloud - infrastructure is a plus Education: Bachelor's or Master's degree in Computer Science, Engineering, or a related field Excellent verbal and written English communication skills and the ability to interact professionally with a diverse group are required. CTG does not accept unsolicited resumes from headhunters, recruitment agencies, or -based recruitment services for this role. To Apply: To be considered, please apply directly to this requisition using the link provided. For additional information, please contact Laura Dominguez at Laura.Dominguez@ . Kindly forward this to any other interested parties. Thank you! The expected base salary for this position ranges from $ 92,000 to $ 103,000 annually. Salary offers are based on a wide range of factors including relevant skills, training, experience, education, market factors, and where applicable, licensure or certifications obtained. In addition to salary, a competitive benefit package is also offered. #J-18808-Ljbffr