Ajah Suleiman

Results-oriented Mobile Development Engineer with 3+ years of experience designing, developing, and maintaining high-performance, user-friendly mobile applications for the fintech and payments sector. Expert in React Native with a proven track record of delivering cross-platform (iOS & Android) solutions that facilitate secure digital payments, seamless onboarding, and robust financial workflows. Adept at collaborating with cross-functional teams—including product managers, designers, and backend engineers—to translate business objectives into innovative mobile features.

Passionate about writing clean, maintainable code, implementing mobile security protocols, and optimizing application performance for maximum scalability and user engagement.

Mobile Development Engineer at Squareme (Fintech Platform) (2024-04 – Present)

Developing and maintaining a high-traffic fintech application for social payments, virtual dollar cards, and savings, serving thousands of users across Nigeria with React Native.

• Full-Cycle Development: Lead the end-to-end development of new features for the Squareme mobile app and FundR mobile App using React Native, from initial concept and technical design to deployment on both the Google Play Store and Apple App Store.
• Cross-Functional Collaboration: Partner closely with product managers, UI/UX designers, and backend engineers to define requirements and deliver innovative payment solutions that align with strategic business objectives.
• Designed a context-based mobile architecture (Auth, User, RemoteConfig) that centralizes session state, business data, and runtime configuration.
• Implemented a unified API integration layer with Axios interceptors for secure bearer-token injection and Firebase Performance instrumentation on network calls.
• Engineered push notification infrastructure using FCM + local notifications, including background handling and duplicate-notification suppression.

Mobile Developer at Softcode Innovations (2023-06 – 2024-03)

Developed and maintained cross-platform mobile applications using React Native and Expo, contributing to all phases of the development lifecycle.

• Built and maintained responsive, reusable UI components using NativeWind CSS, ensuring a consistent and user-friendly experience that adhered to mobile UI/UX best practices.
• Implemented robust state management solutions (Redux) to handle complex data flows, enhancing application efficiency and scalability.
• Worked with backend teams to integrate RESTful APIs and implement secure user authentication, directly impacting the functionality of client projects.

Mobile Developer (Internship) at Info Tech (2023-01 – 2023-05)

Assisted in the design and implementation of responsive user interfaces using Material UI based on Figma designs.

• Supported senior developers in integrating backend services and implementing user authentication features, gaining foundational experience in API integration and collaborative development.