Hybrid Locations: Milwaukee, Mayfield Heights, or Houston We are seeking a highly skilled Senior Java Developer to support a large-scale application modernization initiative for an enterprise automotive client based in New Jersey. This role involves deep hands-on development work, including rewriting legacy Java applications into modern, cloud-native solutions on AWS. The ideal candidate has a strong foundation in core Java, experience working with microservices architectures, and a track record of migrating enterprise applications from on-prem to AWS. This is a client-facing role with high visibility, where you’ll work closely with internal and client-side development teams to assess existing applications, design scalable solutions, and build them using modern Java stacks and AWS services. You’ll be joining a global delivery team with an extensive backlog of work and a long-term roadmap. Job Responsibilities • Lead the design, development, and migration of custom-built Java web applications from on-prem to AWS • Rewrite and modernize legacy Java applications into cloud-native microservices • Work closely with client teams to understand the current application landscape, provide design input, and troubleshoot issues • Participate in Agile ceremonies, sprint planning, and backlog grooming sessions • Conduct code reviews, ensure code quality (Sonar) and maintain code coverage standards • Implement and optimize CI/CD pipelines • Collaborate with DevOps and Cloud teams to deploy applications on AWS ECS, RDS, and CDK • Provide regular status updates to stakeholders and escalate blockers proactively Required Qualifications • 6–10+ years of experience with Java/J2EE application development • Strong hands-on experience with microservices architecture • Deep knowledge of Core Java, object-oriented principles, and modern Java frameworks • Proven experience with cloud migration and rewriting on-prem applications into AWS-native solutions • Strong understanding of AWS services, especially ECS, CDK, RDS • Familiarity with CI/CD tools, code quality practices (e.g., Sonar), unit testing frameworks (e.g., JUnit) • Experience working in Agile/Scrum environments • Excellent problem-solving aptitude and ability to troubleshoot complex systems • Strong communication skills with the ability to interface directly with client-side developers and stakeholders Nice-to-Have • Experience in the automotive or manufacturing sectors • Familiarity with older Java frameworks or legacy systems • Exposure to distributed, global team environments About Brooksource: Brooksource provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, national origin, age, sex, citizenship, disability, genetic information, gender, sexual orientation, gender identity, marital status, amnesty, or status as a covered veteran in accordance with applicable federal, state, and local laws.