**MANTECH** seeks a motivated, career- and customer-oriented **Full Stack Developer** to join our innovative team in **Ashburn, VA** . This is a hybrid position with 2 days onsite and 3 days remote. 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 “big data” solutions to promote efficient trade and travel. **Responsibilities include but are not limited to:** + 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 6-15 years or AS/AA and 4-13 years or BS/BA and 2-7 years or MS/MA/MBA and 0-5 years or PhD/Doctorate and 0-3 years. + Knowledge in Java development, including core Java concepts, object-oriented design principles/patterns and modern frameworks (e.g. Spring Boot, Spring Framework). + Experience developing Micro Services architecture patterns including building and deploying containerized applications (Docker, Kubernetes). + Experience with messaging queues such as gRPC, RabbitMQ, Kafka. + Experience setting up, configuring, and maintaining CI/CD pipelines for automated application delivery using Harness or Jenkins. + Experience with RESTful API design and development. + Solid communication and interpersonal skills, with the ability to collaborate effectively within a team. **Preferred Qualifications:** + Experience with cloud platforms such as AWS and related cloud services (e.g. EC2, S3, Lambda, RDS, EKS). + Experience working with relational databases (e.g. Oracle, PostgreSQL) and/or NoSQL databases (e.g. MongoDB). + Hands on experience leveraging distributed data/computing tools including Hadoop, Spark, Impala, MySQL, Elasticsearch, Solr, etc. + Experience working in Agile/Scrum development methodology. + Solid understanding of software development lifecycle. **Clearance Requirements:** + Must be a U.S. citizen with the ability to obtain and maintain DHS CBP suitability prior to starting this position. **Physical Requirements:** + The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers, which may involve delivering presentations. ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. If you are a qualified individual with a disability and require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please email us at careers@mantech.com and provide your name and contact information.