Job Description - Role: Java DeveloperLocation: onsite in Manassas, VADuration: 6+ month contract MOI: In-Person Interview For GPI Engineering Cluster on ongoing initiatives GPI payments, swiftGO and PREVAL services evolutionWe require an individual with excellent JAVA programming experience with following usageJAVA 8 and above, Restful API implementation using Tomcat, JSON and XML data formats and Cryptography implementation in JAVAPython Scripting and JUnit Testing experienceLambda Expressions & Parallel Streams is added advantageCandidate should have advanced understanding of object-oriented programming using (link removed)ndidate should be able to code review for best practices, security, and coding standards.Linux operating system experience is must.Working knowledge of Python programming is a plus for this position Also following database skills are not mandatory but desiredNOSQLCASSANDRA ,Kafka/Kafka streamSpecific Skills:Core JAVA - 5+ years of experience needed RHEL Linux Environment - 4+ years of experience neededPython - Yes or NoJAVA bases Web Services Testing - 3+ years of experience neededNO SQL Databases - Yes or No