Senior Java Developer

Essential Job Functions

• Design, develop, maintain, and modernize enterprise Java applications supporting mission-critical government systems.
• Plan and execute application and technology stack upgrades while minimizing operational impact.
• Develop and maintain Java and Python applications running on Windows-based VMware infrastructure.
• Refactor and modernize legacy application code using current development standards and best practices.
• Implement secure coding practices in accordance with federal cybersecurity and compliance requirements.
• Participate in code reviews and promote software development best practices.
• Upgrade, configure, and maintain Apache Solr clusters using ZooKeeper.
• Plan and execute Solr version upgrades, including index migration and optimization.
• Configure, deploy, and maintain Apache Tomcat application servers.
• Integrate enterprise applications with Oracle 19c databases.
• Support directory services integration using Apache Directory Studio.
• Develop and maintain integrations with SAP Business Intelligence reporting environments.
• Troubleshoot application, middleware, and integration issues across the technology stack.
• Collaborate with software developers, database administrators, infrastructure engineers, cybersecurity personnel, and business stakeholders.
• Support system testing, validation, and deployment activities during modernization efforts.
• Create and maintain technical documentation, including system architecture, upgrade procedures, deployment guides, and operational documentation.
• Identify opportunities to improve application performance, scalability, reliability, and maintainability.

Required Skills

• Due to the sensitivity of customer related requirements, U.S. Citizenship is required.
• Ability to obtain and maintain a Top Secret/Sensitive Compartmented Information (TS/SCI) security clearance.
• 13+ years of experience in software engineering, systems engineering, information technology, or a closely related field.
• A Bachelor's degree may substitute for 4 years of experience.
• A Master's degree may substitute for 6 years of experience.
• Extensive experience developing enterprise Java applications.
• Strong experience developing applications in Python.
• Experience supporting applications deployed on Windows-based VMware infrastructure.
• Expertise with Apache Solr and ZooKeeper, including Solr upgrades, index migration, replication, and optimization.
• Experience administering and deploying applications on Apache Tomcat.
• Experience with Apache Directory Studio and LDAP directory integration.
• Experience integrating applications with Oracle 19c and other relational database management systems.
• Experience supporting SAP Business Intelligence reporting environments.
• Strong understanding of secure software development practices and secure coding standards.
• Experience modernizing and upgrading enterprise software applications in production environments.
• Excellent analytical, troubleshooting, and problem-solving skills.
• Strong written and verbal communication skills.

Desired Skills

• Experience developing applications using the PrimeFaces UI framework.
• Active TS/SCI clearance with an in-scope polygraph.
• Experience supporting federal government or Department of Defense (DoD) information systems.
• Experience working in Agile software development environments.
• Familiarity with DevSecOps practices, CI/CD pipelines, and automated deployment tools.