Sr. Developer

Senior Developer

Concept Plus is a mission-focused technology solutions provider that transforms IT concepts into impactful solutions for federal agencies. Headquartered in Fairfax, VA, we bring the agility, responsiveness, and customer intimacy of a small business combined with the quality and infrastructure of a larger firm.

Recognized as an award-winning Oracle partner, we have delivered innovative solutions across Defense, Intelligence, Civilian, Health IT, and Tribal sectors. Our highly certified experts build systems that drive efficiency, accelerate modernization, and ensure mission outcomes with certainty.

We offer competitive pay, comprehensive health, dental, and vision insurance, paid life insurance, paid time off, 11 paid holidays, performance bonuses, tuition reimbursement, unlimited training, and the opportunity to thrive in a collaborative, flexible, and innovative environment.

Concept Plus is seeking an experienced Senior Developer to join our team supporting a critical Air Force system modernization project. The successful candidate will be a key contributor to the design, development, and maintenance of a complex enterprise application built on a Java/J2EE platform.

You will work within a dynamic, team-based Agile environment, leveraging your technical expertise to deliver robust, secure, and high-quality software solutions. The ideal candidate will have experience with modern cloud and AI-powered technologies, as this role will be instrumental in our planned migration to a cloud-native architecture in AWS GovCloud.

What you'll do

• Design, develop, test, and maintain full-stack enterprise applications, including front-end components and back-end Java/J2EE services.
• Analyze, maintain, and enhance complex Java code, including code automatically converted from legacy COBOL programs.
• Write and maintain complex Oracle PL/SQL procedures, functions, and triggers to support business logic.
• Utilize static code analysis and security scanning tools to proactively identify and remediate security vulnerabilities and code quality issues.
• Develop and maintain a suite of automated tests (unit, integration, functional) to ensure quality and regression-free deployments.
• Develop and manage system interfaces with multiple legacy systems using messaging queues (JBoss AMQ).
• Create and maintain sophisticated reports using JasperReports.
• Work as a key member of an Agile development team, collaborating with government stakeholders to develop and estimate user stories.
• Contributes to the creation and maintenance of the system architecture and product roadmap.
• Leverage modern development practices, including AI-assisted tools, to accelerate the software development lifecycle.
• Provide technical guidance and mentorship to junior developers.
• Liaise with systems engineers, database administrators, and other technical teams to ensure seamless integration and deployment.

Required Qualifications

• US Citizenship Required
• Ability to obtain and/or maintain a Secret Clearance
• DoD 8140 intermediate certification or DoD 8570 IAM Level II certifications or higher
• Bachelor's degree in computer science, Engineering, or a related technical field.
• 6-8 years of professional experience in full-stack Java/J2EE software development.
• Strong proficiency with Oracle databases, including complex SQL and PL/SQL development.
• Strong experience with front-end technologies including HTML, CSS, and JavaScript.
• Proficiency in developing RESTful APIs and working with data formats like XML and JSON.
• Strong experience with J2EE application servers such as JBoss or Tomcat.
• Proficiency with modern version control systems (e.g., GitLab, GitHub).
• Demonstrated experience working within an Agile development methodology.

Preferred Qualifications

• Experience developing and deploying applications in an AWS GovCloud environment.
• Hands-on experience with containerization technologies (e.g., Docker, Kubernetes) and microservices architecture.
• Experience with DevSecOps principles and CI/CD pipeline automation.
• Experience building applications with Oracle APEX.
• Experience using AI-powered development tools (e.g., GitHub Copilot) to accelerate development.
• Familiarity with security and quality scanning tools (e.g., SonarQube, Fortify).
• Experience with automated testing frameworks (e.g., JUnit, Selenium).
• Experience with enterprise messaging systems like JBoss AMQ.
• Hands-on experience with JasperReports.
• Possess functional experience within a USAF or other DoD program environment.

Concept Plus is an Equal Opportunity Employer. As such, we will give your application full consideration without regard to your race, color, religion, sex, age, national origin, disability, veteran status, sexual orientation, gender identity, or any other classification protected by federal, state, or local law.