Senior Full Stack Developer

General information

Requisition # R66791 Locations USA-VA-Ashburn Posting Date 03/24/2026 Security Clearance Required Public Trust/Suitability Remote Type Onsite Time Type Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

MANTECH seeks a motivated, career and customer oriented Senior Full Stack Developer SME to join our team in Ashburn, Virginia.  This position is onsite two days a week.

Each day U.S. Customs and Border Protection (CBP) oversees the massive flow of people, capital, and products that enter and depart the United States via air, land, sea, and cyberspace.  The volume and complexity of both physical and virtual border crossings require the application of solutions to promote efficient trade and travel. 

Responsibilities include but are not limited to:

• Lead and perform development and maintenance of end-user focused, object-oriented, data-driven analytic applications to support CBP threat analysis and targeting in an agile environment.
• Design, develop, and implement scalable, high-performance and reliable applications and microservices using Java (including frameworks like Spring Boot, Jakarta etc.) for the backend and modern JavaScript frameworks (e.g. React, Angular, Vue.js) for the frontend.
• Contribute to all phases of the software engineering lifecycle (SELC), including requirements gathering, architecture design, coding, testing, deployment, and maintenance.
• Develop and consume RESTful APIs and ensure seamless integration between front-end and backend systems.
• ·Develop new code, modify existing application code, conduct unit and system testing, and engage in rigorous documentation of developed and delivered application use cases, data flows, and functional operations.
• Develop, manage, and optimize CI/CD pipelines (e.g. using Jenkins, Gitlab CI, Harness) for automated builds, testing, and deployments.
• Demonstrate a strong practical understanding to integrate rapid deployment process of AI/ML services into application delivery framework for targeting.

Minimum Qualifications

• HS Diploma/GED and 15-20 years or AS/AA and 13-18 years or BS/BA and 7-12 years or MS/MA/MBA and 5-9 years or PhD/Doctorate and 3-7 years
• Proven expertise in Java development, including core Java concepts, object-oriented design principles/patterns and modern frameworks (e.g. Spring Boot, Spring Framework)
• Hands on experience developing Micro Services architecture patterns including building and deploying containerized applications (Docker, Kubernetes).
• Experience with messa