Available to hire
Hi, I’m Mais Assaf, a senior iOS developer and mobile engineer based in Dubai, UAE. I’ve spent 6+ years building native iOS apps and leading cross-functional teams from concept to shipping. My strengths include clean architecture, UI polish, robust REST API integration, and delivering reliable mobile experiences across platforms such as iOS and Flutter. I enjoy turning ideas into beautiful, performant apps that users love.
In my recent role, I delivered a production iOS app serving over 1.5 million users, led the migration from native iOS to Flutter to reduce platform-specific duplication by about 35%, and enabled secure payment gateways and push notifications to boost engagement. I’m passionate about code quality, collaboration with product and design, and continuing to learn new technologies to craft delightful user experiences.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Language
English
Fluent
Arabic
Fluent
Work Experience
iOS Developer at AlphaApps
July 1, 2022 - PresentLed full ownership of Muvi iOS app (1.5M+ users), driving architecture design, performance optimization, and App Store delivery. Achieved 80% crash rate reduction through rigorous debugging and tuning. Built modular REST API architecture with token-based authentication and session handling to support large-scale financial operations. Implemented multi-threaded programming and optimized UI components (Dynamic Island, Live Activities) for smooth, high-performance user experience. Collaborated cross-functionally to align architecture with product vision.
iOS Developer at Tukatech
June 1, 2022 - September 9, 2025Independently developed and released 5+ enterprise-grade iOS apps from concept to App Store; focused on security, modular architecture, and user-centric design. Delivered in Agile sprints; owned feature delivery and participated in architecture reviews and sprint planning. Applied security best practices and unit testing, reducing production bugs by 50%. Delivered features in Agile sprints and contributed to design discussions.
iOS Developer at CodersDC
November 1, 2020 - September 9, 2025Contributed to enterprise app development with secure REST APIs, data persistence, and UI flows; collaborated with senior engineers. Contributed to system performance improvements via debugging and optimization tasks.
iOS Developer at AlphaApps
July 1, 2022 - PresentLed the Muvi iOS app architecture, performance optimization, and App Store delivery for a 1.5M+ user product. Achieved an 80% reduction in crash rate through rigorous debugging and tuning. Designed a modular REST API architecture with secure token-based authentication and session handling to support large-scale financial operations. Implemented in-app purchase workflows with Apple Pay, Checkout, HyperPay, and PayFort, increasing transaction success rates. Collaborated cross-functionally to define scalable architecture and align product vision across design, backend, and business stakeholders. Optimized UI components (Dynamic Island, Live Activities) to deliver a smooth, high-performance user experience.
iOS Developer at Tukatech
June 1, 2022 - September 9, 2025Independently developed and released 5+ enterprise-grade iOS apps from concept to App Store; focused on security, modular architecture, and user-centric design. Delivered features in Agile sprints; owned feature delivery and participated in architecture reviews and sprint planning. Applied security best practices and unit testing, reducing production bugs by 50%.
iOS Developer at CodersDC
November 1, 2020 - September 9, 2025Contributed to enterprise app development with secure REST APIs, data persistence, and UI flows; collaborated with senior engineers. Contributed to system performance improvements through debugging and optimization tasks.
iOS Developer at AlphaApps
July 1, 2022 - PresentLed greenfield development of the Muvi Cinemas app (1.5M+ users) using Swift, SwiftUI and MVVM; designed secure token-based authentication with CryptoKit; implemented Apple Pay, Checkout, HyperPay and PayFort integrations; defined reusable components, debugged memory leaks with Xcode Instruments, and owned CI/CD pipelines (Fastlane, GitLab CI) while ensuring App Store compliance. Collaborated with product, design, backend and QA to deliver features aligned with the roadmap.
iOS Developer at Tukatech
June 1, 2022 - September 13, 2025Developed and maintained 5+ enterprise iOS apps with a focus on offline storage, performance tuning and secure data handling. Applied TDD and best practices to reduce production bugs and improve maintainability. Delivered modular UI components and integrated RESTful APIs with real-time capabilities. Maintained dependencies and frameworks, resolved conflicts, and ensured cross-team compatibility.
iOS Developer at CodersDC
November 1, 2020 - September 13, 2025Supported modular iOS app development focusing on user flows, API integration and performance optimization. Refactored code to reduce technical debt and improve system scalability. Delivered regular UI components and integrated RESTful APIs, while maintaining project dependencies and fixing conflicts.
iOS Developer at AlphaApps
July 1, 2022 - PresentBuilt and scaled Muvi Cinemas iOS app (1.5M+ users) from scratch using Swift, SwiftUI, and MVVM. Implemented in-app purchase flows and scalable Apple Pay integrations. Integrated real-time notifications and chat modules via Firebase and custom sockets. Debugged memory leaks with Instruments and maintained app performance post-release. Wrote unit tests and ensured coverage for mission-critical modules. Led reusable component design and release automation (Fastlane + GitLab CI). Collaborated across design, QA, and backend teams to deliver high-quality features in agile sprints.
iOS Developer at Tukatech
June 1, 2022 - October 10, 2025Developed and maintained 5+ enterprise iOS apps with focus on offline storage, performance tuning, and secure data handling. Applied TDD and best practices to reduce production bugs and improve maintainability. Delivered modular UI components and integrated RESTful APIs with real-time capabilities. Maintained and updated project dependencies and frameworks, resolving conflicts and ensuring compatibility.
iOS Developer at CodersDC
November 1, 2020 - October 10, 2025Supported modular iOS app development, focusing on user flows, API integration, and performance optimization. Refactored code to reduce technical debt and improve system scalability. Delivered regular UI components and integrated RESTful APIs with real-time capabilities.
iOS Developer at AlphaApps
July 1, 2022 - PresentBuilt and scaled Muvi Cinemas iOS app (1.5M+ users) using Swift, SwiftUI, MVVM. Implemented in-app purchase flows and secure token workflows. Integrated real-time notifications and chat modules using Firebase. Debugged memory leaks with Instruments; maintained app performance post-release. Wrote unit tests and ensured coverage for mission-critical modules. Led reusable component design and release automation (Fastlane + GitLab CI). Collaborated across design, QA, and backend to deliver high-quality features under Agile sprints.
iOS Developer at Tukatech
June 1, 2022 - October 10, 2025Developed and maintained 5+ enterprise iOS apps with a focus on offline storage, performance tuning, and secure data handling. Applied TDD and best practices to reduce production bugs and improve maintainability. Delivered modular UI components and integrated RESTful APIs with real-time capabilities. Maintained and updated project dependencies and frameworks, resolving conflicts and ensuring compatibility.
iOS Developer at CodersDC
November 1, 2020 - October 10, 2025Supported modular iOS app development, focusing on user flows, API integration, and performance optimization. Refactored code to reduce tech debt and improve system scalability. Delivered regular UI components and integrated APIs; supported project knowledge transfer.
Senior Mobile Engineer at AlphaApps
July 1, 2022 - PresentDelivered a production iOS app serving 1.5M+ users, improving stability and scalability by ~80% post-launch. Led migration from native iOS to Flutter, reducing platform-specific code duplication by ~35%. Enabled secure payment gateways (Apple Pay, Checkout, HyperPay, PayFort) and reduced checkout failures by ~25%. Implemented and optimized push notifications via Firebase, boosting delivery reliability and user engagement by ~40%. Built complex UI components with SwiftUI and UIKit, decreasing UI defects and rework by ~30%. Created UI/integration tests with Appium to cut regression issues by ~45%.
iOS Developer at Tukatech
November 1, 2020 - June 1, 2022Built and maintained enterprise iOS apps with modular architecture, improving feature reuse and maintainability by ~40%. Improved app quality through performance tuning and test-driven workflows, reducing reported bugs by 50%. Integrated secure REST APIs for real-time features, improving data reliability and error handling by ~35%.
iOS Developer at CodersDC
May 1, 2019 - November 1, 2020Produced modular iOS features for SME applications, accelerating development time by ~25%. Assisted with API integrations and performance improvements, enhancing responsive UX by ~20%. Enhanced UI and animations, increasing visual consistency by ~15%.
Education
Bachelor’s Degree in Information Technology Engineering – Artificial Intelligence at Damascus University
September 1, 2014 - September 1, 2021Bachelor's Degree in Information Technology Engineering - Artificial Intelligence at Damascus University
September 1, 2014 - September 1, 2021Bachelor’s Degree in Information Technology Engineering - Artificial Intelligence at Damascus University
September 1, 2014 - September 1, 2021Bachelor's Degree in Information Technology Engineering - Artificial Intelligence at Damascus University
September 1, 2014 - September 1, 2021Bachelor's Degree in Information Technology Engineering - Artificial Intelligence at Damascus University
September 1, 2014 - September 1, 2021Bachelor's Degree in Information Technology Engineering (Artificial Intelligence) at Damascus University
September 1, 2014 - September 1, 2021Qualifications
iOS & Swift – The Complete iOS App Development Bootcamp
January 11, 2030 - September 9, 2025Swift UI Masterclass 2025 – iOS App Development & Swift Data
January 11, 2030 - September 9, 2025Flutter & Dart – The Complete Guide
January 11, 2030 - September 9, 2025iOS & Swift – The Complete iOS App Development Bootcamp
January 11, 2030 - September 9, 2025SwiftUI Masterclass 2025 – iOS App Development & Swift Data
January 11, 2030 - September 9, 2025Flutter & Dart – The Complete Guide
January 11, 2030 - September 9, 2025iOS & Swift – The Complete iOS App Development Bootcamp (Udemy)
January 11, 2030 - September 13, 2025Swift UI Masterclass 2025 – iOS App Development & Swift Data (Udemy)
January 11, 2030 - September 13, 2025Flutter & Dart – The Complete Guide (Udemy)
January 11, 2030 - September 13, 2025iOS & Swift – The Complete iOS App Development Bootcamp (Udemy)
January 11, 2030 - October 10, 2025SwiftUI Masterclass 2025 – iOS App Development & Swift Data (Udemy)
January 11, 2030 - October 10, 2025Flutter & Dart – The Complete Guide (Udemy)
January 11, 2030 - October 10, 2025iOS & Swift – The Complete iOS App Development Bootcamp (Udemy)
January 11, 2030 - October 10, 2025SwiftUI Masterclass 2025 – iOS App Development & Swift Data (Udemy)
January 11, 2030 - October 10, 2025Flutter & Dart – The Complete Guide (Udemy)
January 11, 2030 - October 10, 2025iOS & Swift – The Complete iOS App Development Bootcamp
January 11, 2030 - February 4, 2026Swift UI Masterclass 2025 – iOS App Development & Swift Data
January 11, 2030 - February 4, 2026Flutter & Dart – The Complete Guide
January 11, 2030 - February 4, 2026Industry Experience
Software & Internet, Media & Entertainment, Professional Services, Other
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Hire a App Developer
We have the best app developer experts on Twine. Hire a app developer in Dubai today.