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Senior Mobile UI Developer
Job in
Birmingham, Jefferson County, Alabama, 35275, USA
Listed on 2026-05-10
Listing for:
Seneca Resources Company, LLC
Full Time
position Listed on 2026-05-10
Job specializations:
-
Software Development
App Developer - Mobile/Web, Full Stack Developer
Job Description & How to Apply Below
Overview
Location:
Hybrid in Birmingham, AL
Position Status:
Contract to Hire
We are seeking a Senior Mobile UI Engineer to play a key role in modernizing a large-scale, internal mobile application used daily by approximately 5,000 employees. This is a hands-on, senior-level role focused on building secure, high-performance mobile applications (iOS/Android)—not web sites or responsive web pages.
You will work on a mobile application with third-party system integrations, including Microsoft Dynamics 365, Power BI, and other enterprise platforms, while helping evolve the app’s architecture, UI patterns, and security model.
Responsibilities- Design, develop, and maintain production-grade mobile application features using React Native and Type Script
- Contribute to the modernization of an existing enterprise mobile app, improving performance, usability, and scalability
- Build robust, reusable UI components and help shape long-term mobile architecture and design patterns
- Integrate mobile UI with complex backend systems and third-party APIs, including Microsoft platforms (Dynamics 365, Power BI)
- Implement and maintain secure authentication flows, including multi-factor and two-factor authentication
- Optimize mobile app performance across devices, OS versions, and network conditions
- Write clean, testable, well-documented code with strong test coverage (unit and integration testing)
- Collaborate closely with UX/UI designers, backend engineers, product owners, and platform teams
- Participate in code reviews, architectural discussions, and Agile ceremonies
- Mentor and support other developers, promoting best practices and high engineering standards
- Stay current with mobile development trends, tools, and frameworks to continuously improve the app and team
- 10+ years of professional software development experience, with significant hands-on mobile application experience
- Strong React Native experience building real-world mobile apps (iOS and Android)
- Experience building and maintaining mobile apps used at scale (internal or external)
- Deep understanding of mobile UI/UX principles, performance optimization, and device constraints
- Hands-on experience with unit and integration testing (Jest, React Testing Library or similar)
- Solid knowledge of mobile application state management (Redux, Zustand, Recoil, etc.)
- Experience integrating with RESTful APIs and/or GraphQL
- Familiarity with CI/CD pipelines, Git-based version control, and automated testing
- Strong problem-solving skills, attention to detail, and the ability to work effectively in a collaborative team
- Experience with Ionic / Capacitor or hybrid mobile platforms
- Exposure to Java-based backends and enterprise APIs
- Experience integrating with Microsoft enterprise tools (Dynamics 365, Power BI, Azure services)
- Knowledge of mobile security best practices, authentication, and authorization
- Previous experience modernizing or refactoring legacy mobile applications
Position Requirements
10+ Years
work experience
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