Abdalrahim Abdullah Al Ayubi
Verified Expert in Engineering
iOS and Flutter Developer
Riyadh, Riyadh Province, Saudi Arabia
Toptal member since November 21, 2025
Abdalrahim is a senior iOS and Flutter developer with 9+ years of experience building scalable, high-performance mobile applications using Swift, SwiftUI, and Flutter. He has a proven track record leading teams, optimizing app performance, and delivering enterprise-grade apps. Abdalrahim is adept at integrating REST APIs, managing CI/CD workflows, and elevating UX through clean code architecture and collaboration.
Portfolio
Experience
- iOS - 8 years
- iOS App Design - 8 years
- Xcode - 8 years
- Swift - 8 years
- UIKit - 8 years
- SwiftUI - 8 years
- Flutter - 2 years
- Cursor AI - 1 year
Preferred Environment
Xcode, Cursor AI, Android Studio, Figma, Discord, Microsoft Teams, Slack, Adobe Experience Design (XD), Mobile App Development, Swift, iOS, Flutter
The most amazing...
...development I've led is an iOS app for six ministries, delivered within three months using VIPER, RxSwift, and REST APIs, and deployed at the enterprise level.
Work Experience
Senior Mobile Developer
Sahab
- Headed the development of the Inspection iOS App and delivered it from concept and design to completion within three months. Oversaw the integration of customer demands, ensuring the product met multiple user requirements in time for the demo.
- Employed VIPER architecture, UIKit, Rx, Swift, Keychain, RealmDB, and REST API to develop a scalable and maintainable codebase. Utilized Agile methodology and Jira.
- Deployed the app for each client using the Apple Enterprise Program instead of the App Store.
- Optimized the app performance through threading, data management, and advanced performance tuning techniques.
Lead iOS Developer
Esar
- Served as lead iOS developer on Ahel Al Ebel and directed a team of four iOS developers to create a large-scale social platform for camel enthusiasts, auctions, and contests across Saudi Arabia.
- Coordinated with project managers and stakeholders to ensure the timely delivery of features aligned with public events and broadcast schedules.
- Optimized real-time content feeds and media uploads, enabling smooth user interactions even under peak season conditions.
Lead iOS Developer
Terra Communications and Information Technology
- Built the customer-facing iOS application entirely in SwiftUI as lead iOS developer, marking it as one of the company's first large-scale SwiftUI projects.
- Developed Sayyar and collaborated with designers and back-end engineers to shape the user experience, implementing features such as real-time GPS tracking, dynamic pricing, and instant driver–rider matching.
- Handled enrollment in the Apple Program, enabling Teracit to distribute apps securely through enterprise channels. Utilized modern SwiftUI architecture, asynchronous networking, and location services to enhance app reliability and responsiveness.
Experience
Inspection iOS App
Built using Swift, UIKit, RxSwift, RealmDB, and RESTful APIs, the application follows a VIPER architecture for maintainability and scalability. It was engineered for enterprise deployment through the Apple Developer Enterprise Program, ensuring each ministry received a customized and secure version outside the App Store.
The app's design emphasizes offline capability, data integrity, and performance optimization, enabling inspectors to capture data, attach photos, and synchronize results seamlessly once online. I led the entire development cycle, delivering the full production version within three months, while integrating diverse client requirements under tight deadlines.
The Inspection iOS App now serves as a critical digital tool in the government's inspection operations, improving accuracy, speed, and interdepartmental coordination.
Ahel Al Ebel
Sayyar
Balleh.com
Education
Diploma in Software Engineering
Al Khaleej Institute - Riyadh, Saudi Arabia
Certifications
Professional Scrum Master
Alkhobraa
MakeSchool Summer Academy Certificate for iOS Development
MakeSchool
Skills
Libraries/APIs
RxSwift
Tools
Xcode, Adobe Experience Design (XD), Figma, Microsoft Teams, Android Studio, Slack, Sketch
Languages
Swift
Frameworks
UIKit, SwiftUI, Flutter, Combine, RealmSwift
Paradigms
VIPER Architecture, Mobile Development, Model View ViewModel (MVVM), Unit Testing
Platforms
iOS
Storage
Realm
Other
iOS App Design, Mobile App Development, Design Systems, Cursor AI, Discord, iOS App Development, Computer Science, System Design, Software Development, Android App Development, Senior Users, Accessibility, Team Leadership, Unique Business Ideas, RESTFul APIs, User Interface (UI), User Experience (UX), Processing & Threading, Scrum Master, App Design, eCommerce UI
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