JOBSEARCHER

Java Data Scientist

HaystackBaltimore, MDL5 SeniorSeptember 29th, 2026
We are working with a leading technology integrator that provides comprehensive life-cycle services and solutions across the technical, engineering, intelligence, and enterprise information technology markets for the U.S. federal government. This organization is known for its deep customer and domain knowledge, enabling the delivery of complex systems engineering and integration projects.The Role Assess, maintain, and rewrite legacy Java applications Refactor and extend existing backend systems Write clean, scalable, and efficient code for business applications Leverage dominant frameworks to build backend applications and REST APIs Write and optimize queries across relational and non-relational databases Utilize test libraries like JUnit and Mockito to ensure application stabilityWhat You'll Need Bachelor's degree with 9+ years of experience, or Master's with 7+ years, or PhD with 4+ years of experience Demonstrated expertise in Core Java, including OOP, multithreading, and JVM memory management Proven experience with Spring and Spring Data JPA Familiarity with development tools and build systems such as Eclipse, Maven, Gradle, Git, and Jenkins Experience with Oracle, Apache Tomcat, AWS Cloud Framework, and Linux Active TS/SCI with polygraph clearanceWhat's On Offer Opportunity to work on critical federal government projects Collaborative and innovative work environment Chance to impact large-scale systems engineering and integration Competitive salary packageApply via Haystack today!