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ECS Corporate Services

Mobile Application Developer

Career Insights for Application Developer / Engineer

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What they do

An Application Developer or Engineer designs or improves applications software. Oversees the entire applications development process. Analyzes customer or user needs, designs programs, writes code or instructs computer programmers, tests design, and documents programs. May assist with upgrades or maintenance.

$111,735 / year median in the U.S.

-3% projected decline

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Job Description

Mobile Application Developer at ECS Corporate Services Mobile Application Developer at ECS Corporate Services in Fairfax, Virginia Posted in 3 days ago. $130,000.00 - $140,000.00 per year

Please Note:

This position is contingent upon contract award. Everforth ECS is seeking a M obile Application Develope r to work remotely . Everforth ECS is seeking a talent ed Mobile Application Developer t o join our dynamic data team supporting the Department of Homeland Security (DHS) Office of the Chief Information Officer (OCIO). Our team supports public facing websites across DHS, in support of the mission essential Web Content Management program. The Mobile Application Developer will design, develop, and maintain secure, high-performance mobile applications.

Responsibilities Include:
Application Development:

Design, code, test, and deploy native or cross-platform mobile applications (iOS/Android) that support DHS field operations.

Security & Compliance:

Ensure all mobile applications adhere to strict DHS and federal cybersecurity standards, including data encryption, secure authentication, and FISMA compliance.

System Integration:

Integrate mobile applications with backend enterprise systems, databases, and real-time data feeds to provide actionable intelligence

UI/UX Design:

Create intuitive user interfaces optimized for field use, ensuring high usability under varying operational conditions.

Maintenance & Optimization:

Monitor application performance, troubleshoot issues, and implement updates to ensure continuous availability and reliability.

Salary:

$130,000 - $140,000 General Description of Benefits Degree in Computer Science, Engineering, or a related technical field. BS/BA and 7+ years Must be a U.S. citizen Hands on experience in mobile application development (Swift, Kotlin, React Native, or Flutter). Proficiency in RESTful APIs, mobile security protocols, and cloud-based backend services (e.g., AWS GovCloud, Azure Government). Knowledge of mobile data storage and testing frameworks. Demonstrated ability to develop software solutions for complex, high- stakes operational environments.