Hybrid Java Developer — Federal DHS/CBP, Tech Ownership

Sienna Systems Corporation; Falls Church (VA); Hybrid; USD 125,000 - 135,000; Full time

Benefits offered by this job

401(k) with 4% matching

3 weeks PTO + 11 federal holidays

Hybrid schedule in Northern Virginia

Job summary

Sienna Systems Corporation in Virginia is seeking a Java Developer to join a collaborative software team supporting the DHS CBP TASPO/TASPD program. Hybrid role based in Northern Virginia.

You will design, develop, test, and support Java applications and services with a small, influential team. You will contribute to architectural decisions, collaborate with QA, product, DevOps, and other developers, and help set team standards while delivering high-quality software within an enterprise

Qualifications

• 4+ years of professional Java development with aBachelor's degree, or 7+ years without a degree.
• Strong knowledge of Java tooling, design patterns, and best practices.
• Proficiency with SQL and relational databases.
• Experience with Git, pull requests, branching strategies, and code reviews.
• Experience with typical testing frameworks — unit testing and mocks.
• Experience with build pipelines and dependency management.
• Ability to diagnose issues using debugging, logging, and performance-analysis tools.
• Ability to work independently on assigned projects and contribute to technical decisions.

Responsibilities

• Design, develop, test, and maintain Java applications and services.
• Develop and maintain RESTful APIs and system integrations.
• Translate business and technical requirements into reliable software.
• Participate in code reviews and architectural discussions.
• Write unit and integration tests and maintain automated testing.
• Troubleshoot defects, performance issues, and production problems.
• Work with SQL databases to develop queries and data-access components.
• Participate in Agile/Scrum planning and stand-ups.

Skills

Java

REST APIs

SQL

Design patterns

Git

Debugging & performance

Education

Bachelor's degree in Computer Science or related field

Tools

Git

CI/CD tooling

REST API testing tools

Job description

Sienna Systems Corporation in Virginia is seeking a Java Developer to join a collaborative software team supporting the DHS CBP TASPO/TASPD program. Hybrid role based in Northern Virginia.

You will design, develop, test, and support Java applications and services with a small, influential team. You will contribute to architectural decisions, collaborate with QA, product, DevOps, and other developers, and help set team standards while delivering high-quality software within an enterprise