Data Scientist (Expert) - Active TS/SCI with Full Scope Polygraph (FSP)

Location: McLean, VAClearance Required: TS/SCI with Full Scope Polygraph (FSP)

Position Type: Full-Time, On-Site

Salary Range: $155,000 – $185,000We are seeking a Data Scientist (Expert) to support mission-focused work. The Data Scientist (Expert) is a specialized, Java-focused technical expert responsible for modernizing, refactoring, and maintaining mission-critical backend Java data processing systems and microservices for the customer. Unlike traditional Python/R data science roles, this position directly addresses a backlog of legacy Java data pipelines and requires an expert software engineer who can contribute meaningfully on Day One to system performance, object-oriented design, and enterprise web service integrations. The position requires an active TS/SCI with Full Scope Polygraph (FSP).

Primary Responsibilities: Legacy Java System Modernization: Analyze, maintain, and rewrite legacy Java backend processes to align with updated operational requirements and performance standards. Microservices & Web Service Development: Build, maintain, and secure robust Spring Boot microservices, REST APIs, and database integrations supporting web application architectures. Performance Tuning & Memory Management: Optimize multithreading, object-oriented design (OOP), and JVM memory management for high-throughput enterprise data flows. Cloud & Database Integration: Deploy and maintain Java-based applications across AWS cloud infrastructure, Linux OS, Apache Tomcat, and Oracle databases. Build Pipeline Management: Utilize build and version control tools (Maven, Gradle, Git, Jenkins, Eclipse) to support continuous integration and deployment in a secure environment.