Hybrid Remote - Sr. Java Developer; TS​/SCI Security Clearance

Position: Hybrid Remote - Sr. Java Developer (TS/SCI) with Security Clearance
Zachary Piper Solutions is seeking an experienced Senior Java Developer to support the modernization of a mission-critical government information system. This role focuses on upgrading and maintaining enterprise applications, modernizing legacy software, integrating complex technology stacks, and supporting secure application deployments within highly regulated environments. The ideal candidate brings extensive Java development expertise, strong systems integration experience, and a background supporting large-scale modernization efforts.

Work Environment:
* Hybrid role supporting a mission-critical federal modernization program.
* 3 days on two days remote.
* Candidates may work from Reston, VA;
Joint Base Anacostia-Bolling (Washington, DC); or Annapolis Junction, MD , while collaborating with engineering, infrastructure, security, and business stakeholders to modernize and sustain enterprise government systems. Responsibilities:
* Lead modernization and upgrade efforts for enterprise Java applications supporting government mission systems.
* Develop, maintain, and enhance Java and Python applications across complex enterprise environments.
* Refactor and modernize legacy codebases to improve scalability, performance, maintainability, and security.
* Implement secure coding practices in accordance with government cybersecurity requirements.
* Upgrade, optimize, and maintain Apache Solr environments utilizing Zookeeper services.
* Perform Solr index migrations, version upgrades, and platform performance tuning.
* Deploy and maintain applications within Apache Tomcat environments.
* Integrate applications with Oracle 19c and other enterprise database platforms.
* Support directory service integrations using Apache Directory Studio.
* Design and maintain integrations with SAP Business Intelligence reporting frameworks.
* Troubleshoot application, infrastructure, and database issues across multiple environments.
* Collaborate with security, infrastructure, database, and business stakeholders to support successful deployments and upgrades.
* Develop technical documentation, architecture diagrams, deployment procedures, and system configuration guides.
* Participate in testing, code reviews, validation efforts, and production deployments.

Qualifications:

* 13+ years of software development, systems engineering, or related experience.
* Expert-level experience with Java enterprise application development .
* Strong Python development experience.
* Experience supporting applications within Windows-based VMware environments .
* Extensive experience with Apache Solr and Zookeeper , including administration, upgrades, index migration, and optimization.
* Experience administering and deploying applications using Apache Tomcat .
* Experience integrating applications with Oracle 19c and other relational database systems.
* Experience supporting SAP Business Intelligence environments and reporting frameworks. Clearance Requirement:
* Ability to obtain and maintain a TS/SCI security clearance with the willingness and ability to obtain or maintain a CI Polygraph . Preferred:
* Active TS/SCI clearance with current Polygraph .
* Experience with Prime Faces UI framework.
* Familiarity with Dev Sec Ops  practices , CI/CD pipelines, and automated deployments. Compensation:
* Pay Band: $170,000 - $200,000 Benefits:
* Comprehensive benefits package including medical, dental, vision, 401k, 20 days of paid time off, 11 federal holidays, and sick leave. Application Period:
Opens on 07/21/2026 and will be accepted for at least 30 days from the posting date. #LI-NJ1 #LI-Hybrid