Senior Java Developer

Benefits:

• 401(k)
• 401(k) matching
• Health insurance
• Paid time off
• Vision insurance

S2Alliance Inc. is seeking an experienced Java Software Engineer to support a suite of software applications for U.S. Customs and Border Protection (CBP). This role is primarily focused on Java backend development, Spring/Spring Boot, microservices, REST APIs, and database technologies. Experience with React or Angular is a plus but is not required.

At S2Alliance Inc., our people are at the center of everything we do. We provide a collaborative and transparent work environment, competitive benefits, and opportunities for professional development and career growth.

Responsibilities

• Design, develop, test, and maintain enterprise applications using Java/J2EE technologies.
• Develop backend services and applications using Spring Framework, Spring Boot, Spring Cloud, and microservices architecture.
• Design, develop, and integrate RESTful APIs and web services.
• Develop scalable and reliable solutions for enterprise applications.
• Work with relational and NoSQL databases, including Oracle, PostgreSQL, MySQL, and MongoDB.
• Write clean, maintainable, and well-tested code following established software engineering standards.
• Participate in code reviews, unit testing, application releases, troubleshooting, and technical documentation.
• Collaborate with developers, architects, business analysts, and other stakeholders in an Agile development environment.
• Support application enhancements, modernization initiatives, and ongoing maintenance activities.

Required Skills & Experience

• 8+ years of professional Java development experience, including enterprise Java applications.
• Strong experience with Java/J2EE and Java 8 or higher.
• Hands‑on experience with Spring Framework, Spring Boot, Spring Cloud, Spring Security, and Spring Data.
• Experience designing and developing microservices and RESTful APIs.
• Experience with unit testing frameworks and software development best practices.Experience with Gradle, Git, JSON, and related development tools.
• Experience working with application/web servers and web services.
• Working knowledge of database technologies such as Oracle, PostgreSQL, MySQL, or MongoDB.
• Familiarity with Unix/Linux environments and scripting.
• Experience working within Agile software development methodologies.
• Understanding of software release procedures, coding standards, design documentation, configuration management, and change management processes.
• Strong communication, collaboration, and problem‑solving skills.
• Must be eligible to obtain and maintain a DHS Public Trust clearance.

Preferred / Nice‑to‑Have Skills

• Front‑end development experience with React or Angular is a plus.
• Familiarity with JavaScript or TypeScript is a plus.
• Experience supporting large‑scale federal government applications is desirable.
• Previous experience supporting DHS or CBP programs is a plus.

Benefits:

• 401(k)
• Dental insurance
• Health insurance
• Paid time off
• Vision insurance

Education:

• Bachelor's (Required)

Experience:

• Front‑end development: 2 years (Preferred)
• Angular/React: 2 years (Preferred)
• Java/Spring Framework: 7 years (Required)

Work Location: Hybrid remote in Ashburn, VA 20147 Salary: Competitive and commensurate with the candidate’s qualifications and years of relevant experience. Job Type: Full‑time Clearance: Must be eligible to obtain a DHS Public Trust. An active DHS Public Trust or Top Secret (TS) clearance is a plus, but not required. Relocation: Candidates should be local to the Ashburn, VA area or willing to relocate.

Flexible work from home options available.