Sr Java Developer

OST INC; McLean (VA); On-site; USD 110,000 - 160,000; Full time

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.

Skills

5+ years software development

Communication skills

Problem solving

Education

Bachelor's degree in CS/IT or related field

Tools

Git

AWS

Docker

Kubernetes

OpenShift

Job description

Optimal Solutions & Technologies (OST, Inc.) is focused on excellence. We specialize in providing Management Consulting, Information Technology, and Research Development and Engineering services.

The fundamental distinction of the OST team is its business knowledge in both the public and private sectors. We serve the aerospace & transportation, association & nonprofit, defense, education, energy, financial, healthcare, and technology & telecommunications industries. OST is successful because we listen to our clients, we learn from our clients, and we know our clients.

Java Developer

Description of specific duties in a typical workday for this position:

• 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.

Requirements (Years of experience, Education, Certifications):

• 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.

Nice to Have (skills that are not required, but nice to have):

• Previous USCIS, DHS, or federal government experience.
• Experience with AWS, Docker, Kubernetes, or OpenShift.
• Experience modernizing legacy enterprise applications.
• Familiarity with USCIS systems such as ELIS, Global, CLAIMS3, or Benefits Hub.

This is a full-time position paying a base salary, full benefits, and has possible bonus potential based on merit and performance.

OST is an equal opportunity employer. Applicants are considered for positions without regard to race, religion, gender, native origin, age, disability, or any other category protected by applicable federal, state, or local laws.

Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities

This employer is required to notify all applicants of their rights pursuant to federal employment laws.

For further information, please review the Know Your Rights notice from the Department of Labor.