> Markdown version of [/jobs/ext/2028409-java-full-stack-developer](https://www.wearedevelopers.com/jobs/ext/2028409-java-full-stack-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Java Full Stack Developer - **Company:** Applied Information Sciences, Inc. - **Location:** Washington, DC, United States - **Experience:** Expert - **Contract:** Contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Spring Security, Application Programming Interfaces (APIs), Agile Methodology, Amazon Web Services, Amazon Elastic Compute Cloud, Amazon S3, Cascading Style Sheets (CSS), Continuous Delivery, Continuous Integration, Data Migration, Data Security, Database Design, Software Design Patterns, Document-Oriented Databases, Hibernate (Java), Human-Computer Interaction, Spring Framework, PostgreSQL, Apache Maven, Software Engineering, PL-SQL, SQL Databases, TypeScript, Enterprise Software Applications, Okta, ReactJS, Spring-boot, Gitlab, Git, SC Clearance, Build Management, Kubernetes, Information Technology, Atlassian Tools, Build Tools, Cloudwatch, Restful APIs, Software Version Control, Docker - **Published:** August 11, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9086657/java-full-stack-developer ## About the Role The Full Stack Developer will be a part of an agile software development team and integral in performing software development, O&M support, and adhere to agile methodology and scrum ceremonies. This role will design and implement backed APIs using Java and Spring Boot, design and build secure and responsive UIs using React, and develop optimized PostgreSQL schemas and queries. The ideal candidate will have demonstrated strong verbal and written skills, experiences with the technology and business tools listed below, and will have proven experience delivering large-scale enterprise applications from concept through deployment., Active Top-Secret Clearance and a minimum of 7+ years of experience is required. (Interim Top Secret will not be accepter) Computer Science background w/ degree (Bachelor's or Master's) in field. Must have strong User Interface (UI) design and developing skills using React, JavaScript, and CSS. Must have strong development experience required in the following technologies/areas: Java, Spring Framework/Security 6+, Spring Boot 3+, Hibernate 6+, SQL/PLSQL, PostgreSQL, RESTful APIs, Maven build tool, and Git/GitLab. Must have experience with database design and data migration Additional experience required in the following technologies/areas: AWS (S3, EC2, ECS, Aurora, CloudWatch), Keycloak, Kubernetes, Maven, and Docker Experience with Agile and Scrum and Kanban frameworks/methodologies. Experience with Atlassian tools to include Jira and Confluence. Experience with Continuous Integration/Continuous Delivery (CI/CD) tools and automation. Nice to Have Skills: Exceptional analytical and conceptual thinking skills. Excellent documentation skills. Excellent planning, organizational, and time management skills. Self-motivated with strong initiative to help team grow. ## Description Provide full-stack design and development support using Java, Spring Model View Controller (MVC) Framework/Spring Security/Spring Boot, React, and PostgreSQL. Design and implement modern UI components using React, Typescript/JavaScript, and reusable design patterns. Implement normalized PostgreSQL schemas and entity relationships supporting system scalability. Develop and maintain secure RESTful APIs for data access and integration. Support and document data migration efforts, ensuring integrity and consistency between legacy and new systems. Plan and execute application deployments, version control, and CI/CD pipelines. Assist in supporting all aspects of the project to include all phases of life cycle development. 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