Sr. Full Stack Java Developer

District Partners is supporting a long-standing government integrator in the search for a seasoned Full Stack Java Developer. This individual must be technically hands-on, with the ability to step into a lead developer role once up to speed. You’ll be instrumental in building and scaling applications used by U.S. Customs and Border Protection—mission-critical systems supporting national operations.

Title: Full Stack Java Developer (Lead-Capable)

Location: Hybrid Ashburn, Va.

Clearance: Must be a U.S. Citizen and able to obtain/maintain a CBP Background Investigation

Compensation: Commensurate with experience

Engagement Type: Long-term Contract (C2C or W2)

What You’ll Do:

Develop and maintain scalable full-stack applications

Build and manage RESTful APIs and microservices

Design and optimize SQL/NoSQL database schemas

Lead and mentor developers in an agile environment

Participate in architecture decisions and code reviews

Implement and manage CI/CD pipelines and cloud deployments

Champion application security, performance, and scalability

Must-Have Technical Experience:

Backend: Java 8+, Spring Boot, Spring Framework, Hibernate, JPA, Spring Security

Frontend: React, Angular, or Vue.js; JavaScript (ES6+), HTML5, CSS3

Databases: PostgreSQL, MySQL, MongoDB, Redis

Tools & Infrastructure: Docker, Kubernetes, Maven/Gradle, Git

Web Technologies: REST, JSON, XML, HTTP/HTTPS

Testing: JUnit, Mockito, integration testing suites

Preferred Qualifications:

10+ years of full-stack development experience

Experience with CI/CD (Jenkins, GitLab CI) and cloud platforms (AWS, Azure, GCP)

Familiarity with message queues (RabbitMQ, Kafka)

Agile/Scrum methodology experience

Strong understanding of software architecture and design patterns

Soft Skills:

Strong communication and team collaboration

Problem-solver who thrives in fast-paced environments

Detail-oriented with a drive for clean, efficient code

Comfortable wearing multiple hats and leading when needed

Clearance Requirement:

Candidates must be U.S. Citizens and eligible to obtain a CBP Background Investigation.

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