Senior Java Engineer – APIs, Spring Boot & Cloud

OST INC

McLean (VA)

On-site

USD 110,000 - 160,000

Full time

4 days ago

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Job summary

OST INC seeks a Java Developer in McLean, VA to build enterprise Java applications, RESTful services, and front-end interfaces using React or Angular. The role supports modernization and cloud-based development with CI/CD and DevSecOps practices.

The ideal candidate has 5+ years of software development experience, a CS/IT degree, and strong Java/Spring expertise, plus SQL, automated testing, and Agile practices; U.S. citizenship and USCIS suitability are required.

Qualifications

Bachelor's degree in Computer Science, Information Technology, or a related field.
Five or more years of software development experience.
Strong experience with Java, Spring, or Spring Boot.
Experience developing RESTful APIs and microservices.
Experience with React, Angular, or another modern front-end framework.
Experience with SQL and relational databases.
Familiarity with automated testing, Git, Agile, and CI/CD practices.
Strong communication and problem-solving skills.
S. citizenship and ability to meet USCIS suitability requirements.

Responsibilities

Develop and maintain Java-based enterprise applications.
Build backend services and RESTful APIs using Java and Spring Boot.
Develop user interfaces using JavaScript or TypeScript frameworks such as React or Angular.
Support legacy-system modernization and cloud-based application development.
Write and maintain automated unit and integration tests.
Participate in Agile development activities, code reviews, and technical-design discussions.
Support CI/CD pipelines and DevSecOps practices.
Troubleshoot application and production issues.
Collaborate with government personnel and other technical teams.