Sr Java Fullstack Developer

About Visionsoft International

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Job Title

Sr Java Fullstack Developer

Location

McLean VA - Hybrid

Requirements

• Strong proficiency in Java (8+) and/or Python.
• Solid understanding of core language concepts such as I/O collections/data structures, and, concurrency/multithreading/asynchronous patterns
• Strong experience building and consuming RESTful APIs.
• Experience with backend frameworks such as:
  • Java: Spring Core, Spring MVC, Spring Boot, Spring Security, Spring Data.
  • Python: Flask/FastAPI/Django (or equivalent), ORM usage, authentication/security patterns.
• Experience with streaming/event technologies such as Kafka preferable.
• Proficiency with build and test tooling (as applicable): Maven/Gradle, JUnit/Mockito, pytest/unittest; CI-friendly testing practices.

Database & Data Skills

• Strong database skills with RDBMS (e.g., MS SQL) and data modeling.
• Ability to write advanced SQL for reporting, troubleshooting, and data analysis.
• Experience working with structured and semi-structured data formats: XML/XSD and JSON.

DevOps / SDLC / Tooling

• Working knowledge of Docker in the development process.
• Understanding of application lifecycle management and SDLC best practices.
• Experience using CI/CD pipelines and tools such as JIRA and Jenkins to build and deploy applications.

Front-End (Working Knowledge)

• Basic working knowledge of HTML, JavaScript, and CSS to support integration and troubleshooting.

Preferred / Nice-to-Have (AI / ML)

• Python exposure for automation and/or AI/ML integration is a plus.
• Familiarity with AI/ML integration patterns (e.g., calling model endpoints, evaluation, deployment).
• Exposure to MCP (Model Context Protocol) for AI-enabled integrations/tools is a plus.