job summary: Short Description We are seeking a strong and forward-thinking Java/J2EE Developer with experience in modernizing enterprise applications from on-prem environments to cloud-native architectures. The ideal candidate will have deep expertise in Java, SpringFramework, microservices, and experience working with AWS services including Beanstalk, RDS, DynamoDB, ECS/EKS, and Lambda. Familiarity with containerization (Docker, Kubernetes) is expected as part of a transitional strategy, with the long-term goal of moving to a serverless, event-drivenarchitecture. Knowledge of Node.js is a plus. Position Summary The successful candidate will playa key role in a strategic application modernization initiative to migrate legacy Java applications from an on-prem to the cloud (AWS), leveraging modern technologies such as Spring Boot, containerization, AWS managed services, and eventually serverless architectures. This position requires strong full-stack development capabilities, with emphasis on cloud readiness, microservices, and integration with AWS services. Candidates should also be comfortable supporting legacy systems in the short term, while driving long-term modernization efforts. location: Trenton, New Jersey job type: Contract salary: $55 - 60 per hour work hours: 8am to 5pm education: Bachelors responsibilities: Key Responsibilities Modernize and migrate legacy WebSphere Java applications to AWS using Spring Boot and cloud-native best practicesDesign, develop, and maintain scalable, modular Java microservices leveraging Java and Spring BootBuild and integrate RESTful APIs using Spring, API Gateway, and AWS LambdaMaintain and enhance existing SOAP services, supporting a phased deprecation strategySupport and optimize legacy data access using JPA, Hibernate, MyBatis while transitioning to AWS RDS (Aurora) and DynamoDBUtilize AWS services such as Beanstalk, Lambda, RDS, S3, DynamoDB, CloudWatchApply containerization using Docker, with short-term orchestration using Kubernetes or ECSCollaborate on infrastructure-as-code (IaC) with tools such as CloudFormation or TerraformWork closely with DevOps to ensure seamless CI/CD pipelines using GitHub, Maven/Gradle, Jenkins, etc.Collaborate with UI developers on React-based front endsWrite unit and integration tests using JUnit, Mockito, TestNGMaintain and troubleshoot existing applications with JSF front endsProvide documentation and architecture diagrams for modernization roadmap qualifications: Preferred Certifications (Nice to Have): AWS Certified Developer - Associate or AWS Certified Solutions Architect Education: Bachelor's degree in computer science or a related field, or equivalent technical experience skills: 7+ years of experience in Java/J2EE development, with emphasis on Java 17+, Spring Boot, REST APIsExperience modernizing Java apps from legacy environments (e.g., WebSphere)Proficiency in Spring Framework (Spring Boot, Spring Cloud, Spring Security, etc.)Experience building scalable microservices and integrating with AWS RDS, Aurora, DynamoDBHands-on experience with AWS services: Beanstalk, Lambda, EC2, S3, API GatewayFamiliarity with containerization using Docker, short-term Kubernetes supportExperience developing and consuming SOAP and REST web servicesStrong SQL and NoSQL data modeling experienceProficient in Git, Maven/Gradle, CI/CD workflowsFamiliarity with Node.js and server-side JavaScript (optional but a plus)Experience with Agile development methodologies Ideal Candidate Will Be Able To Lead modernization efforts and translate architectural direction into scalable, maintainable codeSupport legacy systems while contributing to new serverless and microservices-based solutionsWrite clean, testable, and well-documented codeMentor junior developers and work collaboratively in cross-functional teamsStay up to date with trends in cloud-native development, serverless architectures, and DevOpsCommunicate clearly with both technical and non-technical stakeholders Equal Opportunity Employer: Race, Color, Religion, Sex, Sexual Orientation, Gender Identity, National Origin, Age, Genetic Information, Disability, Protected Veteran Status, or any other legally protected group status.At Randstad Digital, we welcome people of all abilities and want to ensure that our hiring and interview process meets the needs of all applicants. If you require a reasonable accommodation to make your application or interview experience a great one, please contact HRsupport@randstadusa.com. Pay offered to a successful candidate will be based on several factors including the candidate's education, work experience, work location, specific job duties, certifications, etc. In addition, Randstad Digital offers a comprehensive benefits package, including: medical, prescription, dental, vision, AD&D, and life insurance offerings, short-term disability, and a 401K plan (all benefits are based on eligibility). This posting is open for thirty (30) days.