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# Senior Java Developer

- **Company:** T-Rex Solutions, LLC
- **Location:** Washington, DC, United States (Remote available)
- **Experience:** Expert
- **Salary:** $100,000.0 - $185,000.0
- **Contract:** Permanent contract
- **Skills:** Testing (Software), Clean Code Principles, Java (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Cloud Computing, System Configuration, Software Debugging, Java Architectures, PostgreSQL, Service-Oriented Architecture, Software Systems, Spring-boot, Integration Tests, Apache Kafka, Microservices
- **Published:** August 4, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=2c565a1957d3e962

## About the Role

T-Rex Solutions is looking to select a Senior Java Developer to support our Internal Revenue Service (IRS) EDOS program. The overall mission of this program is to modernize the IRS legacy Tax processing systems and is critical to the overall modernization of the IRS to improve taxpayer experience, increase voluntary compliance, and reduce the IRS's reliance on costly and unsustainable legacy technology. We are looking for a Java Developer with experience in building high-performing, scalable, enterprise-grade applications. They should have a strong understanding of Java language and Java design patterns as well as a strong understanding of configuring Spring Boot applications and extensive experience with writing microservices in a cloud environment., * Bachelor's Degree and 12+ years of overall experience

 * US Citizenship required
 * Must possess an active IRS MBI Clearance and have current GFE
 * Java Full Stack Development
 * Service Oriented Architecture (SOA)
 * PostgreSQL
 * Microservices Architecture
 * Spring Boot
 * Excellent oral and written communication skills with client stakeholders at all organizational and technical levels
 * Prior experience working on Agile teams

Desired Skills:

 * Experience working with Spring Boot integration with Kafka is a plus.
 * Experience with modernizing existing legacy is a plus

## Description

* Work with development teams and product managers to ideate software solutions.
 * Design, develop and test custom software solutions across multiple system components or applications.
 * Contribute to all phases of the development lifecycle.
 * Ensure designs are in compliance with requirements.
 * Write effective APIs and technical documentation.
 * Write well designed, testable, efficient code in line with programming standards and interface specifications.
 * Test software to ensure responsiveness and efficiency.
 * Troubleshoot, debug and upgrade software.
 * Prepare and produce releases of software components.
 * Support continuous improvement by investigating alternatives and technologies and presenting these for architectural review.
 * Debug build, integration test, and deployment issues.
 * Complete all tasks within timelines for each sprint.
 * Identify roadblocks and issues during daily scrum call.
 * Participates in scrum activities.


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