Senior Java Developer

Job Summary: The Senior Java Developer/Programmer will provide advanced Java development and operational support for the EPA's Safe Drinking Water Information System (SDWIS) and lead efforts in migrating to the Drinking Water State-Federal-Tribal Information Exchange System (DW-SFITES). This role involves maintaining enterprise-level Java applications, optimizing Oracle databases, integrating APIs, and collaborating with stakeholders to ensure successful system transition and continuous operation.

Responsibilities

• Support the technical migration from SDWIS to DW-SFITES, involving data conversion, redevelopment, and system integration.
• Design, develop, modify, and maintain Java application code according to EPA standards.
• Develop, consume, and modify APIs to facilitate integration between systems.
• Write, optimize, and troubleshoot advanced Oracle database queries and procedures.
• Collaborate with project stakeholders and technical leads to ensure continuity and milestone delivery.
• Document technical processes, system changes, and development activities.
• Resolve complex technical issues across the application stack using analytical and problem-solving skills.

Required Skills &

Certifications:

• Advanced Java development experience with enterprise-level applications (5+ years).
• Expertise in Oracle database query development, optimization, and data management (5+ years).
• Proven experience in creating, consuming, and modifying APIs for system integration (5+ years).
• Experience migrating legacy applications including data conversion and cutover planning (5+ years).
• Ability to support live systems operationally, including defect diagnosis and resolution under time constraints (5+ years).
• Strong troubleshooting, analytical, and problem-solving skills.

Preferred Skills &

Certifications:

• Experience with AI-assisted development tools such as GitHub Copilot, ChatGPT, or Claude.
• Familiarity with dashboard development tools like Power BI or Tableau.
• Excellent written and oral communication skills.

Special Considerations:

• Must be able to work independently on operational support and active development tasks.
• Close coordination with the project team is required to maintain system continuity.
• Absences longer than two weeks require management approval and must provide reachable contact information.
• Compliance with all contractual and compensation policies, including overtime laws, is mandatory.

Scheduling:

• Remote work arrangement.
• Assignment duration from October 12, 2026, to October 8, 2027.
• Work schedule to support continuous operational and migration activities, with flexibility as needed.