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Alluvial Concepts Linkedin 路 Posted 1mo ago

Sr. Full Stack Java Developer (Hybrid)

Vatican City State (Holy See)

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Sr. Full Stack Developer - Java

馃搷 Ashburn, VA (Hybrid - 1 day onsite / 4 days remote)

馃嚭馃嚫 Must be a U.S. Citizen and currently reside in the Metro Washington, D.C. area

We have an immediate full-time opening for an experienced Sr. Full Stack Java Developer to join an Agile Scrum team supporting a federal program. This role focuses on delivering releasable software in short sprint cycles while collaborating closely with developers, stakeholders, and end users.

Key Responsibilities

  • Design, develop, and implement custom software and database applications across legacy and modernized systems
  • Collaborate within an Agile Scrum team to deliver high-quality software in short sprint cycles
  • Participate in sprint planning, backlog refinement, testing, demos, retrospectives, and releases
  • Contribute to architectural and engineering standards refinement
  • Analyze complex technical challenges and develop innovative, scalable solutions
  • Ensure product quality, timeliness, and performance standards
  • Mentor junior developers and support team growth
  • Support release planning and conceptual system design

Required Qualifications

  • U.S. Citizen able to pass a CBP background investigation:
    • 3-year felony conviction check
    • 1-year illegal drug use check
    • 1-year misconduct check (e.g., theft or fraud)
  • Bachelor鈥檚 degree in Computer Science, Software Engineering, Information Systems, or related field (or equivalent experience)
  • 7+ years of hands-on software design, development, and implementation experience in a Windows environment
Technical Expertise

  • Java 8+ (strong OOP, data structures, algorithms)
  • Spring Boot, Spring MVC, Spring Security (DI & AOP experience)
  • RESTful API design (versioning, standards, documentation)
  • Angular (deep expertise), TypeScript, JavaScript, HTML, CSS
  • State management and UI performance optimization
  • Testing frameworks (JUnit, TestNG, Mockito)
  • ORM frameworks (Hibernate or similar)
  • SQL / PL-SQL (Oracle, MySQL, SQL Server)
  • Object-Oriented Design & Development (OODD)
  • Service-Oriented Architecture (SOA)
  • Git-based source control and concurrent workflows
  • SDLC best practices (CM, QA, release management)

Desired / Nice to Have

  • Technical certifications (OCAJP, OCPJP, OCE/OCM, CSM)
  • DoD 8570 certification
  • Experience with React, VMware, ETL tools, ESB, message queuing
  • Application security and automated testing experience
  • UML and enterprise modeling tools (e.g., Sparx EA)
  • Jira, VersionOne
  • Postgres or Aurora
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