SME Full Stack Developer - Java​/Python , Clearance Required

SME Full Stack Developer - Java/Python , Clearance Required

At Source Fly, we pair mission-driven innovation with a people-first culture.

Headquartered in Columbia, MD, we provide cloud engineering, data and application services, cybersecurity, automation, workforce development, and strategic communications support to agencies and enterprises nationwide. Our team is at the heart of our success — we prioritize trust, collaboration, and career growth by ensuring every team member is aligned with work that fits their strengths and advances their professional goals. When you join Source Fly, you become part of a supportive community dedicated to delivering exceptional results and building the next generation of mission-ready talent.

Source Fly seeks a motivated, career and customer oriented SME Full Stack Developer - Python to join our team in Ashburn, VA. This is currently a hybrid position with 1-2 days onsite/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 aid officers in detecting threats while promoting efficient trade and travel. The strongest applicant will have a proven track record of delivering production ready enterprise applications employed in the field and by mission-support entities.

In this critical role, you will be responsible for designing, developing, testing, deploying, and maintaining complex applications and services.

You will leverage your expertise across the entire technology stack, with a strong focus on robust backend development using Java, while also contributing significantly to front-end implementation. In addition, you will leverage your expertise in modern software development practices, including comprehensive unit testing, efficient version control, and implementing and maintaining CI/CD pipelines to ensure high-quality, automated software delivery. As an SME member, you will also play a key role in architectural decisions, mentoring junior developers, and driving best practices within the team Applicants should note that while some formal training exists to support building knowledge of missions and the implementation of data-driven solutions, much of the knowledge must be gained through on-the-job training and individual initiative.

Technical knowledge is insufficient to establish credibility in this operating environment; expertise must be enhanced with rapid acquisition of mission knowledge and demonstrated commitment positive mission outcomes; therefore, we seek self-starters who are capable of independent exploration and knowledge acquisition, willing to develop informal support networks, and with an appreciation for the immense challenge of safeguarding the Nation’s borders.

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.
• 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.

Work Location: 1-2 days - Hybrid remote in Ashburn, VA 20147

Minimum Qualifications:

• HS Diploma/GED and 20+ years or AS/AA and 18+ years or BS/BA and 12+ years or MS/MA/MBA and 9+ years or PhD/Doctorate and 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 messaging queues such as gRPC, Rabbit
  
  MQ, Kafka
• Hands‑on 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.
• Python

Preferred Qualifications:

• Experience with cloud platforms such as AWS and related cloud services (e.g. EC2, S3, Lambda, RDS, EKS)
• Experience working with relational…