Position Summary Contractor Onsite : New York Or New Jersey Work you'll do We are looking for an experienced Java Developer Contractor to build and maintain secure, scalable backend applications for financial services clients. You’ll develop enterprise-grade services, integrate complex systems, and work with architects, QA engineers, DevOps teams, and client stakeholders to deliver reliable solutions. What you’ll do Design, develop, and maintain backend applications using Java 11+ and Spring Boot. Build RESTful APIs and event-driven microservices with secure, documented service contracts. Integrate applications with internal and third-party systems. Develop and optimize data-access layers, supporting performance, data integrity, and transaction consistency. Write unit and integration tests, participate in code reviews, and promote high-quality engineering practices. Collaborate on CI/CD pipelines, Agile delivery, defect resolution, and production releases. Tune application performance and apply secure-coding practices aligned with client requirements. Required Skills Advanced Java development experience, including Java 11 or later. Advanced Spring Boot and microservices experience. Experience developing backend applications and RESTful APIs. Strong collaboration and communication skills. Preferred Skills Swagger/OpenAPI and event-driven architecture. Apache Kafka and Apache Spark. Hibernate/JPA, SQL, Oracle, or PostgreSQL. JUnit and Mockito. Maven or Gradle, Jenkins, Git, Docker, Jira, and Agile delivery practices. The expected pay range for this contract assignment is $70-$75 per hour. The exact pay rate will vary based on skills, experience, and location and will be determined by the third-party whose employees provide services to Deloitte. Candidates interested in applying for this opportunity must be geographically based in the United States and must be legally authorized to work in the United States without the need for employer sponsorship. We do not accept agency resumes and are not responsible for any fees related to unsolicited resumes. Deloitte is not the employer for this role. This work is contracted through a third-party whose employees provide services to Deloitte. #Hybrid Expected Work Schedule Approximate hours per week About Deloitte Our inclusive culture empowers our people to be who they are, contribute their unique perspectives, and make a difference individually and collectively. It makes Deloitte one of the most rewarding places to work. As used in this posting, “Deloitte” means , a subsidiary of Deloitte LLP. Please see www.deloitte.com/us/about for a detailed description of the legal structure of Deloitte LLP and its subsidiaries. Requisition code: 372362