Kareem Al-khaldi

• Designed, built, and launched a full-scale social media search engine app on both iOS (Swift/SwiftUI) and Android (Kotlin), using Firebase, Firestore, Cloud Functions, and FCM. Prioritised scalability, security, and seamless cross-platform experience.
• Developed a real-time chat system with group & direct messaging, message pagination, unread tracking, media uploads (images, video, voice notes), and automatic message expiry (24h/7d).
• Built custom Cloud Functions for automated cleanup and storage optimisation.
• Created an advanced content system including story and post sharing inside chat, public/private story visibility settings, reviews with replies, and user profile reporting.
• Implemented dynamic in-app subscription models ( with Firestore-based validation, promo code unlocks, subscription upgrade paths, and permanent Pro/Gold tiers.
• Designed unique ad placements (“Classic” and “Billboard” layouts) plus affiliate-link integration, enabling both businesses and users to monetise content.
• Added location-based discovery and filtering, with hierarchical recognition of nearby cities/countries and category-driven search, ensuring accurate business and product visibility.
• Built multi-device push notification management (FCM), allowing seamless login across devices while keeping tokens synced and notifications reliable.
• Architected Firestore data models with batch commits, structured triggers, and bulk deletion processes, significantly boosting app efficiency and reducing costs.
• Integrated media handling pipeline: image, video, and voice uploads with caching, compression, and type-specific enumerations for extensible code.
• Implemented real-time tracking for reviews, stories, and group chats using listeners and SwiftUI state management, ensuring instant updates across the app.
• Oversaw the entire system architecture, backend integrations, and UI/UX design, delivering a responsive, modern, and ad-free social marketplace platform.
• Ensured regular maintenance checks on applications for smooth functioning.

This application is currently on the App Store ( mobile only ), https://apps.apple.com/gb/app/bowss/id6502288752

• Designed and built a range of small applications from scratch, including a Lifestyle app, Currency Converter, and Fitness Tracker, gaining hands-on experience across the full software development lifecycle.
• Learned to apply SwiftUI to create responsive, cross-platform interfaces for iOS, macOS, and watchOS, providing a consistent experience across Apple devices.
• Practiced state management, data binding, and declarative syntax, building a strong foundation for scalable and maintainable code.
• Experimented with core iOS frameworks such as CoreData, Combine, and AVFoundation, applying them to real-world use cases.
• Carried out debugging, testing, and optimisation on multiple devices, learning how to improve app stability and performance.
• Gained early exposure to Git for version control and working with APIs, preparing for collaborative and production-level development.
• Developed dynamic and scalable web applications using PHP with robust functionality.