Senior Full Stack Java Developer
Confirmed on the employer's own hiring board on Oct 16, 2026. First seen by Alion on Jun 23, 2026. Synergy ECP scores D on the Alion truth index.
The Senior Java 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.
Position 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.
Ensure compliance with 508 accessibility, enterprise security practices, and other practices as needed.
Skills and Experience to Support NGE Team:
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.
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.
Minimum of 7+ years of experience.
Computer Science background w/ degree (Bachelor’s or Master's) in field.
Security Clearance requirement:
Must possess active TS/SCI clearance to be considered for this role.
Other Requirements:
U.S. Citizenship
Compensation Spotlight:
For this role, our typical salary range starts at $125,000 and stretches up to $155,000. But here's the deal - we're not about capping your potential. We're committed to snapping up the best and brightest, and we're ready to put our money where our mouth is. So, if you're one of the rare exceptions to the status quo with the education, experience, and that extra something special, we're not afraid to go above and beyond to secure your talent. Because for us, it's not just about a salary. It's about the complete rewards package, the culture, and the opportunity to make a real impact.