Mobile Application Developer

Zip Zap IT Solutions, LLC; United States; Remote; USD 110,000 - 140,000; Full time

Job summary

Zip Zap IT Solutions, LLC is seeking a Mobile Application Developer to support the USDA APHIS Wildlife Services OARS mobile apps for iOS and Android, with remote work flexibility. The role focuses on enhancing a .NET MAUI app, offline data synchronization via SQLite, and meeting the 60-second mobile sync target within an Azure-based backend.

You'll work in an Agile environment to implement and test mobile features, ensure data consistency, and coordinate with API, backend, QA, and security

Qualifications

• Professional experience developing mobile applications for iOS and Android.
• Hands-on experience with NET MAUI or transferable cross-platform mobile frameworks.
• Experience with C# and integrating mobile apps with REST APIs/backends.
• Experience implementing offline data storage with SQLite or similar.
• Experience implementing or supporting synchronization between mobile apps and backend systems.
• Experience testing/troubleshooting mobile apps on iOS/Android devices or simulators.
• Ability to collaborate with backend/API teams, QA, and stakeholders in Agile environments.

Responsibilities

• Develop, enhance, test, and maintain the OARS mobile app for iOS and Android using NET MAUI.
• Implement and maintain offline data synchronization with SQLite.
• Ensure mobile sync operations complete within the 60-second requirement.
• Support reliable synchronization, including handling interruptions and retries.
• Integrate mobile functionality with OARS APIs, Azure microservices, and external services.
• Support Esri integration and mobile mapping as needed.
• Participate in Agile planning, development, testing, and reviews.
• Create and maintain tests and assist with performance testing and issue remediation.
• Validate Section 508 accessibility requirements and participate in accessibility testing.
• Support security requirements including MFA and FedRAMP Moderate controls.
• Assist with mobile releases, production deployments, and cross-team coordination.
• Maintain mobile architecture docs, guides, and release packages.

Skills

Mobile apps (iOS/Android)

NET MAUI

C#

REST APIs integration

SQLite offline storage

Synchronization

Agile collaboration

Job description

Zip Zap IT Solutions, LLC Mobile Application Developer Remote Full time Company website

Zip Zap IT Solutions is seeking a Mobile Application Developer to support the continued enhancement and maintenance of the USDA APHIS Wildlife Services Operations and Reporting System (OARS) mobile applications for iOS and Android. OARS supports field operations and reporting and relies on mobile data synchronization with the Azure-hosted application and services. The developer will enhance the .NET MAUI mobile application, implement and maintain offline data synchronization using SQLite, and help ensure mobile synchronization operations complete within the PWS requirement of 60 seconds.

About Zip Zap IT Solutions, LLC

Zip Zap IT, a national leader in digital transformation, offers one of the most comprehensive portfolios on the market, spanning consulting, systems integration, industry-specific solutions, infrastructure management, and business process services. It provides end-to-end solutions to address the core business needs of federal agencies and other organizations, helping them remain competitive and grow. By combining added value with innovative, high-performance services, Zip Zap IT excels at guiding its clients through their transformation projects to help them make the most of information technology.

Key Responsibilities

• Develop, enhance, test, and maintain OARS mobile application functionality for iOS and Android using .NET MAUI.
• Implement and maintain offline data synchronization using SQLite so mobile users can work with application data when connectivity is limited or unavailable.
• Develop and maintain synchronization between the mobile applications and OARS APIs, meeting the requirement that mobile sync operations complete within 60 seconds.
• Support reliable synchronization behavior, including handling connectivity interruptions, failed or retried exchanges, data consistency, and synchronization errors.
• Integrate mobile application functionality with OARS APIs, Azure-hosted microservices, and applicable external services.
• Support Esri integration and mobile mapping capabilities where required by prioritized OARS requirements.
• Implement new functional and non-functional requirements and participate in Agile sprint planning, development, testing, and review activities.
• Create and maintain unit, integration, automated, regression, and smoke tests as applicable; support performance testing and issue remediation.
• Validate and document Section 508 accessibility requirements for mobile functionality and participate in quarterly accessibility testing.
• Support application security requirements, including mandatory MFA for authentication and FedRAMP Moderate security controls, in coordination with the broader OARS team.
• Support mobile releases and production deployments, troubleshoot mobile application issues, and coordinate with API, backend, QA, and infrastructure personnel.
• Maintain mobile-related architecture documents, user guides, training materials, security documentation, and final release package materials.

Required Qualifications

• Professional experience developing mobile applications for iOS and Android.
• Hands-on experience with .NET MAUI; experience with closely related .NET cross-platform mobile frameworks may be considered where the candidate can demonstrate directly transferable skills.
• Experience with C# and integrating mobile applications with REST APIs or backend services.
• Experience implementing local mobile data storage and offline application functionality using SQLite or a comparable embedded database.
• Experience implementing or supporting synchronization between mobile applications and backend systems.
• Experience testing and troubleshooting mobile applications on iOS and Android devices or platform simulators.
• Ability to collaborate with backend/API developers, QA personnel, and business stakeholders in an Agile development environment.

Preferred / Differentiating Experience

• Production experience delivering .NET MAUI applications for both iOS and Android.
• Demonstrated experience meeting a defined mobile synchronization performance target, particularly a 60-second completion requirement.
• Experience with offline-first mobile design, synchronization reliability, conflict handling, and data consistency.
• Experience with Esri/ArcGIS mobile mapping or geospatial data integration.
• Experience implementing and testing Section 508 accessibility in mobile applications, including assistive technology and platform accessibility features.
• Experience supporting applications subject to FedRAMP Moderate or comparable federal security requirements and mandatory MFA.
• Experience with mobile CI/CD, automated mobile testing, release packaging, signing, and production support.