Bachelor's degree in Computer Science, Information Systems, or related field (equivalent experience may be considered)
4+ years of professional Java/J2EE (Java EE) development experience
Expertise in Java/J2EE technologies including MVC Model 2, DAOs, Servlets, JSP, EJB, JDBC, JNDI, and JMS
Experience with Oracle application and database logic development using PL/SQL
Familiarity with Oracle Data Integrator (ODI) and Oracle Cloud Infrastructure (OCI) Data Integration
Ability to reverse-engineer undocumented legacy enterprise code
Working knowledge of ETL/batch processing concepts
Active Secret security clearance required
Responsibilities
Bridge legacy system codebase with the Palantir Foundry migration team by analyzing and documenting existing application logic
Reverse-engineer and document business rules in the legacy application
Support static analysis of legacy ETL jobs
Act as SME liaison to Foundry pipeline engineers, translating legacy logic for re-implementation
Document application dependencies to inform cutover and decommission plans
Support reconciliation testing by explaining discrepancies between legacy and new outputs
Benefits
Remote work flexibility
Opportunity to work on legacy modernization projects
Engagement with cutting-edge technologies like Palantir Foundry
Collaboration with a specialized team of engineers
Potential for professional growth in a niche area of software development
Full Job Description
J2EE Developer (Legacy Modernization)
Remote
Responsibilities:
Bridges the legacy system codebase and the Palantir Foundry migration team, reading, analyzing, and documenting existing application and data-integration logic so it can be mapped into the target data integration architecture's ETL pipelines
Reverse-engineers and documents business rules embedded in the legacy application and data layers
Supports static analysis of legacy ETL jobs
Acts as SME liaison to the Foundry pipeline engineers, translating legacy transformation logic into terms they can re-implement correctly
Documents application dependencies, including the database schema, integrations, and the NIPRNet/SIPRNet Data Guard replication path, to inform the eventual cutover and decommission plan
Supports reconciliation testing by explaining why legacy output looks the way it does when it does not match the new Army Vantage (Foundry) output
Requirements:
Bachelor's degree in Computer Science, Information Systems, or a related field (equivalent experience may be considered)
4+ years of professional Java/J2EE (Java EE) development experience
Java/J2EE (Java EE) expertise: MVC Model 2 design patterns, DAOs, Servlets, JSP, EJB (session and message-driven beans), JDBC, JNDI, and JMS
Oracle application and database logic development using PL/SQL (ideally Oracle Application Server and Oracle Database 19c)
Oracle Data Integrator (ODI) and Oracle Cloud Infrastructure (OCI) Data Integration, including Oracle SQL and PL/SQL, ELT/ETL concepts, Oracle Data Transforms, and E-LT architectures
Comfortable reverse-engineering undocumented legacy enterprise code with no SME available to explain it
Working knowledge of ETL/batch processing concepts, such as daily/weekly sync jobs and materialized-view refresh patterns
Create, modify, and test the code, forms, and script that allow computer applications to run. Work from specifications drawn up by software developers or other individuals
Possesses and applies expertise on multiple complex work assignments. Assignments may be broad in nature, requiring originality and innovation in determining how to accomplish tasks
Operates with appreciable latitude in developing methodology and presenting solutions to problems
Contributes to deliverables and performance metrics where applicable
An active Secret security clearance is required (role supports NIPRNet/SIPRNet work)
Preferred Qualifications:
Prior exposure to Army force management or personnel systems (e.g., GFM DI, IPPS-A, TAADS); the domain-specific business rules are dense, and prior context shortens ramp-up considerably
Experience on legacy-to-modern migration or decommission efforts, not just steady-state J2EE development
Ability to collaborate closely with a Palantir Foundry team, communicating legacy logic in terms a Foundry engineer can act on (Foundry coding not required)
Basic scripting (Python/shell) to build validation or bridge tooling between the two systems
CompTIA Security+ or equivalent DoD 8570/8140 baseline certification
