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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Mobile Developer (Cross-Platform) - **Company:** CATAPULT STAFFING LLC - **Location:** Joint Base Andrews, MD, United States - **Experience:** Expert - **Salary:** $170,000.0 - $216,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Agile Methodology, Android Software Development, IOS Applications, Apple IOS, User Authentication, Software Debugging, Identity and Access Management, Mobile Application Software, Airwatch, Systems Integration, Backend, Restful APIs, Multiplatform, Web Api, Vmware - **Published:** August 31, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9130832/sr-mobile-developer-cross-platform ## About the Role Clearance: Active Secret security clearance with eligibility to upgrade to TS/SCI *Active Top Secret security clearance preferred but will take candidates who have a Secret and get them processed, Active Secret security clearance with eligibility to upgrade to TS/SCI. Bachelor's degree in a technical field is preferred; relevant experience may be substituted. Certification meeting DoD 8140 (e.g., Security+, or higher). 5+ years of professional development of cross-platform mobile applications for both iOS and Android. Experience maintaining, integrating, optimizing, and debugging existing mobile applications in operational environments. Experience implementing secure mobile application architectures, including authentication, authorization, and data protection mechanisms. Experience integrating mobile applications with enterprise services and APIs, including REST-based interfaces. Experience supporting mobile device management and secure enterprise mobile deployments, including Samsung Knox SDK and Knox REST APIs. Ability to contribute immediately with minimal ramp-up in a mission-critical operational environment. This position is designated as essential personnel supporting continuity of operations and may require work during government shutdowns, emergencies, or other critical situations. SALARY RANGE: $170,000 - $216,000 The salary range for this position is determined based on qualifications, skills, and relevant experience. The final salary offered will be determined based on several factors including: * The candidate's professional background and relevant work experience * The specific responsibilities of the role and organizational needs * Internal equity and alignment with current team compensation * This role is also eligible for additional compensation, subject to the terms and policies, which may include ## Description As a Sr. Mobile Developer (Cross-Platform), you'll design, build, and sustain secure iOS and Android applications with the goal of delivering mission-critical mobile capabilities across the federal government. Our engineering team is responsible for building and operating high-security mobile solutions for a highly visible government customer, and you'll play a key role in delivering reliable, secure, and scalable applications by contributing immediately within an Agile delivery model, collaborating closely with security and backend teams, and driving disciplined execution in a classified environment. What you'll do: Use cross-platform mobile frameworks and native iOS/Android technologies to design, develop, test, and maintain secure mobile applications. Apply secure coding practices aligned with RMF, STIGs, and secure SDLC standards. Integrate mobile applications with backend APIs, enterprise services, and identity and access management solutions.. Support Mobile Device Management (MDM) integrations, including Samsung Knox and VMware AirWatch. Participate actively in Agile ceremonies and sprint execution to deliver mission-critical capabilities. Communicate progress, risks, and technical decisions clearly to teammates and leadership. Troubleshoot and resolve issues rapidly in high-security environments. 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