Job Title: Full Stack Java Developer with AWS Location: Reston, VA - Hybrid 1X per week onsite, otherwise Remote Type: 12 + months contract – likely extensions Overview: We’re seeking a seasoned Senior Java Developer with strong AWS cloud migration experience and a backend-focused full stack skill set. This role will support development, enhancement, and cloud migration of enterprise applications, primarily leveraging Java 21, Angular, AWS (EC2, EKS), and microservices. The ideal candidate is hands-on with Java/J2EE, experienced in large-scale systems, and capable of supporting legacy-to-cloud transitions in a DevOps environment. Key Responsibilities: + Design, develop, and maintain enterprise-grade Java applications with a focus on backend services. + Lead or contribute to cloud migration efforts, specifically to AWS (EC2, EKS) environments. + Develop and maintain APIs, integrations, and backend services (REST, microservices). + Analyze, modernize, and migrate legacy applications to cloud-native architectures. + Participate in the full software development lifecycle: requirements gathering, design, development, testing, deployment, and support. + Create and execute unit and integration test cases using JUnit/TestNG. + Collaborate with cross-functional teams in an Agile/Scrum environment. + Monitor, troubleshoot, and support high-availability applications in production. + Participate in code reviews and mentor junior developers. + Evaluate emerging technologies and contribute to architecture decisions. Required Qualifications: + 10+ years of hands-on Java/J2EE development experience. + Strong recent experience with Java 17 or 21. + Solid experience in cloud migration projects, especially to AWS (EC2, EKS). + Strong understanding of cloud-native development, containerization, and orchestration. + Experience with Angular (2+ or AngularJS) and Bootstrap for frontend needs. + Experience working with DevOps/CI-CD pipelines. + Strong experience using GIT/Bitbucket, Jenkins, or similar tools. + Experience with API Management tools and RESTful service development. + Understanding of message queues (MQ) and relational databases (DB2 preferred). + Excellent verbal and written communication skills. + Agile/Scrum experience in a fast-paced environment. Preferred Qualifications: + Experience with microservices architecture. + Familiarity with containerization and orchestration tools (e.g., Docker, Kubernetes/EKS). + Knowledge of enterprise cloud security and best practices. + Experience in large-scale application modernization projects. #M2 #LI-CB5 #DI2 Ref: #850-Rockville (ALTA IT) System One, and its subsidiaries including Joulé, ALTA IT Services, CM Access, TPGS, and MOUNTAIN, LTD., are leaders in delivering workforce solutions and integrated services across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible full-time employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan. System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.