Senior Java Developer - Architecture Ownership (DHS/CBP)

Siennasystems; Falls Church (VA); Hybrid; USD 125,000 - 135,000; Full time

Benefits offered by this job

Health insurance

Retirement plan

PTO

Federal Holidays

Disability coverage

Life Insurance

Referral bonus

Job summary

Sienna Systems is seeking a Java Developer to join a collaborative software development team supporting DHS CBP TASPO/TASPD. This hybrid role is based in Northern Virginia and involves designing, developing, testing, and supporting Java applications and services.

You will contribute to architectural decisions, work with QA, product, and DevOps, and participate in Agile/Scrum ceremonies. The role offers strong technical ownership and a stable, long-running program.

Qualifications

• US citizenship and the ability to obtain and maintain a DHS/CBP background investigation.
• 4+ years of professional Java development with a Bachelor's degree, or 7 years without a degree.
• Strong knowledge of current Java-centric tooling and design patterns.
• Proficiency with SQL and relational databases.
• Experience with Git, pull requests, branching, and code reviews.
• Experience with unit testing and mock objects.
• Experience with build pipelines and dependency management.
• Ability to diagnose issues using debugging, logging, and performance tools.
• Ability to work independently 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, technical discussions, and architectural decisions.
• 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, estimation, stand-ups, and retrospectives.
• Collaborate with QA, product, DevOps, and other developers throughout the lifecycle.
• Contribute to continuous improvement of application quality and team standards.

Skills

Java Development

SQL proficiency

Code Reviews

Independent Work

Agile team work

Education

Bachelor's degree in Computer Science or related field

Tools

Git

REST APIs

Testing frameworks

Build pipeline

Job description

Sienna Systems is seeking a Java Developer to join a collaborative software development team supporting DHS CBP TASPO/TASPD. This hybrid role is based in Northern Virginia and involves designing, developing, testing, and supporting Java applications and services.

You will contribute to architectural decisions, work with QA, product, and DevOps, and participate in Agile/Scrum ceremonies. The role offers strong technical ownership and a stable, long-running program.