Mobile Application Developer

MANTECH is hiring a Mobile Application Developer for a hybrid role in Ashburn, VA. This position supports CBP personnel by designing, building, and maintaining secure, high-performance mobile applications for mission-critical field use, with an emphasis on DHS and FISMA-aligned cybersecurity practices.

You will help deliver iOS and Android tools that enable actionable information for operational teams, including integration with enterprise backends and real-time data feeds, while maintaining reliability in demanding environments.

Responsibilities

• Design, code, test, and deploy native or cross-platform mobile applications for iOS/Android supporting CBP field operations.
• Build mobile tools that support the processing of aliens, border security data management, and interdiction of illegal immigration.
• Maintain compliance with DHS and federal cybersecurity standards, including data encryption, secure authentication, and FISMA compliance.
• Integrate mobile applications with backend enterprise systems, databases, and real-time data feeds to deliver actionable intelligence to personnel in the field.
• Create intuitive user interfaces optimized for field conditions and usability under varying operational constraints.
• Monitor application performance, troubleshoot issues, and implement updates to support continuous availability and reliability.

Requirements

• Education in Computer Science, Engineering, or a related technical field, with an acceptable combination of degree and experience: PhD/Doctorate with 3+ years (BS/BA with 7+ years; MS/MA/MBA with 5+ years).
• Hands-on experience in mobile application development using Swift, Kotlin, React Native, or Flutter.
• Proficiency with RESTful APIs, mobile security protocols, and cloud backend services such as AWS GovCloud or Azure Government.
• Knowledge of mobile data storage and testing frameworks.
• Demonstrated ability to develop software solutions for complex, high-stakes operational environments.
• Must be a U.S. citizen with a current/active Top-Secret clearance and the ability to obtain and maintain DHS CBP suitability prior to starting.

Technology & Tools

• Mobile: iOS, Android, Swift, Kotlin, React Native, Flutter
• Backend & Security: RESTful APIs, AWS GovCloud, Azure Government, FISMA
• Process: Agile/DevSecOps
• Collaboration: Jira, Confluence

Preferred Qualifications

• Experience developing applications for federal law enforcement or defense agencies.
• Knowledge of mobile device management (MDM) solutions and secure containerization.
• Experience with offline-first application architecture for remote or low-connectivity areas.
• Familiarity with Agile/DevSecOps methodologies.
• Experience with Atlassian tools such as Jira and Confluence.

Physical Requirements

• 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.