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-native environments (OpenShift/Kubernetes preferred)

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-native 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 fee-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@ctg.com. 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.