Senior Mobile App Developer

Location: Middletown, PA
Position Type: Hybrid, Mostly Remote
Hybrid Schedule: Onsite week per month if needed
Contract Length: 12 months + extension

We're seeking a Mobile Application Developer to design, develop, and maintain mobile applications for a large tolling and retail organization. The ideal candidate will have experience building secure, scalable, and user-friendly mobile solutions that integrate with enterprise backend systems such as SAP and Microsoft Dynamics.

Required Skillset

• Bachelor’s degree in Computer Science, Software Engineering, or related field.
• 7+ years of experience in mobile app development and capable of building applications for both Android and Apple
• Experience integrating with SAP and MS Dynamics 365
• Proficiency in Flutter, React Native, or native development (Swift, Kotlin) and JavaScript/TypeScript.
• Experience with building front end applications and building integration connections to various middle tier technologies – C#, .net and or other connection gateways, and should have experience with various testing technologies/tools
• Strong understanding of mobile app architecture, state management (Redux, MobX), and navigation libraries.
• Experience with iOS and Android development and platform-specific guidelines.
• Strong understanding of RESTful APIs and integration with enterprise systems.
• Experience with NodeJS and familiarity with Dataverse
• Experience with testing frameworks (such as Jest and Detox) for mobile applications.
• Knowledge of secure payment processing and PCI compliance.
• Familiarity with cloud platforms (Azure, AWS), CI/CD pipelines, and version control.
• Excellent problem-solving skills and ability to work in a fast-paced environment.

Desired Skillset

• Experience in tolling or retail industry applications.
• Knowledge of SAP Fiori or OData services.
• Understanding of mobile analytics and push notifications.

Description of Duties

• Design and develop mobile applications for iOS and Android platforms using modern frameworks (e.g., Flutter, React Native, or native development).
• Integrate mobile apps with backend systems including SAP ERP and Microsoft Dynamics 365 for real-time data synchronization.
• Collaborate with UX/UI designers to deliver intuitive and engaging user experiences.
• Implement secure payment gateways and transactional functionalities within the app.
• Optimize app performance, troubleshoot issues, and ensure high reliability across devices.
• Work closely with backend developers and enterprise architects to ensure seamless API integration.
• Maintain code quality, perform unit testing, and adhere to best practices in mobile development.
• Stay updated on emerging mobile technologies and recommend improvements.
• Fully document all created work associated with this position, including technical and functional designs and diagrams, test plans, test scripts, impact analysis reports, lessons learned, best practices for others to follow, plus any other documentation as required by the organization. This documentation shall follow the format and/or templates as instructed.
• Develop and maintain a productive working relationship with technology staff, business owners, project sponsors, vendors, and key stakeholders.
• Lead and participate in project team activities for system work efforts related to enterprise systems.
• Work independently to accomplish the tasks and duties assigned.
• Adhere to established organizational standards, policies, and procedures.
• Utilize various software and/or technology tools to perform job duties.
• Perform tasks and other duties related to this position and role as assigned.