Sikander Khan

Developed cross-platform mobile applications using React Native, delivering pixel-perfect, responsive UIs for iOS and Android. Implemented deep-linking functionality for App to enable seamless event sharing across platforms. Integrated Stripe Payment API, supporting secure subscriptions and one-time payments. Built NFC payment features for iOS by writing native modules in Swift and Objective-C, integrating them with React Native. Designed frontend components with React.js, Next.js, and Redux, ensuring scalability and high performance. Managed end-to-end deployment of apps to the Apple App Store and Google Play Store, including release management and beta testing. Integrated Firebase services (push notifications, authentication, analytics, crashlytics) for real-time communication and monitoring. Optimized full-stack performance by coordinating frontend (React.js, React Native) with backend systems (Node.js, Express.js, MongoDB, Laravel, SQL). Collaborated using Git/GitHub, Jira, Postman, VS Code, Android Studio, and Xcode for CI/CD and efficient delivery.

Built and maintained RESTful APIs using Node.js, Express.js, and Laravel (PHP) for scalable backend services. Designed and optimized MongoDB and SQL schemas, ensuring efficient data retrieval and storage. Implemented complex business logic for HP-Appen, dynamically selecting MCQs based on difficulty and user learning progress. Developed event scheduling logic (daily/weekly/monthly/custom) for App, improving user engagement and personalization. Integrated user tracking APIs to capture IP addresses and extract geo-coordinates, enhancing analytics and reporting. Utilized Postman for API testing/debugging and collaborated with frontend developers for smooth integration. Worked in an Agile/Scrum environment with version control using Git/GitHub.