Senior Java Backend Developer

Senior Java Backend DeveloperLocation: McLean, VA (Onsite – In-Person Interview Required) Duration: Contract (July 20, 2026 – December 31, 2026) Position Type: Contract (C2C) Work Authorization: Open to sponsored candidates through one-layer-deep sub-vendors only. Candidates must be W2 employees of the sub-vendor.Job Summary: We are seeking a highly experienced Senior Java Backend Developer to join the Loan Portfolio Management and Structuring (LPMS) team supporting Freddie Mac's Investments & Capital Markets (I&CM) division. The ideal candidate will have extensive experience in Java backend development, SQL, database migration, and cloud-based data platforms. This role involves modernizing legacy applications, migrating data to new platforms, and collaborating with multiple technology teams to support critical business initiatives. Candidates with prior experience supporting Freddie Mac or Fannie Mae environments are highly preferred.Required Skills10+ years of hands-on experience in Java development (Java 11+)Strong expertise in Spring Boot and backend application developmentExtensive experience writing and optimizing complex SQL queriesStrong experience with relational databases such as MSSQL, DB2, and SybaseExperience with PostgreSQLExperience working with GraphQLHands-on experience with SnowflakeExperience supporting database migration and data modernization initiativesKnowledge of Angular-based applicationsExperience with FitNesse testing frameworkFamiliarity with PING AuthenticationExperience with GitHub, Bitbucket, Gradle, Docker, Jira, and SeleniumExcellent analytical, troubleshooting, and communication skillsPreferred QualificationsPrevious experience working with Freddie Mac or Fannie MaeExperience in financial services, mortgage, or capital markets domainBachelor's degree in Computer Science, Information Technology, or equivalent experience (Master's degree preferred)Key ResponsibilitiesAnalyze and convert complex SQL queries from MSSQL and DB2 to modern data platforms.Enhance and maintain Java Spring Boot and Angular applications supporting business-critical systems.Support migration of applications and data to Snowflake and other modern data sources.Develop, update, and execute FitNesse test suites to validate application functionality.Collaborate with business and technology teams to ensure successful implementation of migration initiatives.Optimize SQL performance and improve backend application efficiency.Participate in deployment, testing, and production support activities.Work independently to design, develop, troubleshoot, and deliver high-quality technical solutions.Interview ProcessOne round (60 minutes)In-Person InterviewInterviews targeted for the week of July 6, 2026Additional InformationCandidates submitted with technical assessments will be given preference.Strong communication skills and the ability to collaborate with cross-functional teams are essential. Argyle Infotech