I am a Staff Software Engineer with over 7 years of iOS experience and more than 3 years in Flutter development. I've led teams for over 2 years, delivered more than 35 mobile applications, and created enterprise frameworks widely used across multiple products. I have a proven track record in healthcare, fintech, and consumer apps, specializing in team leadership, scalable architectures, performance optimization, and creating reusable UI components and shared business logic frameworks. Throughout my career, I've worked with diverse international clients remotely and onsite, leading technical transformations and innovation. I am passionate about mentoring junior engineers, establishing development standards, and driving impactful projects to success through optimized workflows and agile methodologies.

Mohamed Salah Zidan

I am a Staff Software Engineer with over 7 years of iOS experience and more than 3 years in Flutter development. I've led teams for over 2 years, delivered more than 35 mobile applications, and created enterprise frameworks widely used across multiple products. I have a proven track record in healthcare, fintech, and consumer apps, specializing in team leadership, scalable architectures, performance optimization, and creating reusable UI components and shared business logic frameworks. Throughout my career, I've worked with diverse international clients remotely and onsite, leading technical transformations and innovation. I am passionate about mentoring junior engineers, establishing development standards, and driving impactful projects to success through optimized workflows and agile methodologies.

Available to hire

I am a Staff Software Engineer with over 7 years of iOS experience and more than 3 years in Flutter development. I’ve led teams for over 2 years, delivered more than 35 mobile applications, and created enterprise frameworks widely used across multiple products. I have a proven track record in healthcare, fintech, and consumer apps, specializing in team leadership, scalable architectures, performance optimization, and creating reusable UI components and shared business logic frameworks.

Throughout my career, I’ve worked with diverse international clients remotely and onsite, leading technical transformations and innovation. I am passionate about mentoring junior engineers, establishing development standards, and driving impactful projects to success through optimized workflows and agile methodologies.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
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Language

Arabic
Fluent
English
Fluent

Work Experience

Staff Software Engineer (iOS & Flutter) - Freelance at Quiet
March 1, 2025 - August 27, 2025
Developed QuietOpsToolkit, an enterprise iOS integration suite enabling subscription management, analytics, push notifications, and feature flags, reducing development time across applications. Collaborated with UI/UX and user acquisition teams to improve subscription conversions. Led development of AI-powered apps such as Mentor AI Chatbot and wellness tools, standardizing UI components and shared business logic frameworks for multiple consumer apps. Established coding standards and review processes to maintain scalable codebases.
Staff Software Engineer (iOS & Flutter) at Quiet
March 1, 2025 - August 27, 2025
Created QuietOpsToolkit, an enterprise iOS integration suite supporting subscription management, analytics, push notifications, and feature flags, reducing development time across company apps. Collaborated with user acquisition and UI/UX teams to analyze user journey data and implement subscription conversion improvements. Developed a reusable UI component library and shared business logic frameworks for multiple consumer apps, enhancing consistency and accelerating development. Led development of AI-powered applications including Mentor AI Chatbot (OpenAI integration), wellness apps, productivity tools, and habit tracking platforms. Established development standards, code review processes, and architectural patterns for maintainable, scalable iOS and Flutter codebases.
Staff Software Engineer (iOS & Flutter) (Freelance) at Quiet
March 1, 2025 - August 27, 2025
Created an enterprise iOS integration suite (QuietOpsToolkit) using SOLID principles, including subscription management, analytics, push notifications, and feature flags, reducing development time across company applications. Collaborated cross-team with user acquisition and UI/UX teams to analyze user journey data and implement strategic feature improvements to optimize subscription conversions. Developed a standardized UI component library and shared business logic across multiple consumer apps ensuring consistent user experiences and accelerated development cycles. Led AI-powered app development projects including Mentor AI Chatbot with OpenAI integration and wellness apps. Established development standards, code review processes, and architectural patterns for scalable, maintainable codebases shared across iOS and Flutter apps.
Staff Software Engineer (iOS & Flutter) Freelance at Quiet
March 1, 2025 - August 27, 2025
Created QuietOpsToolkit, an enterprise iOS integration suite featuring subscription management, analytics, push notifications, and feature flags, which reduced development time across all company apps. Worked cross-functionally with user acquisition and UI/UX teams to analyze user journey data, enhancing features to optimize subscription conversion. Developed reusable UI component system and shared business logic frameworks used across consumer applications to ensure consistency and accelerated development. Led AI-powered application development including Mentor AI Chatbot, wellness apps, productivity tools, and habit tracking platforms. Established development standards, code review processes, and architectural patterns resulting in maintainable, scalable codebases across iOS and Flutter apps.
Staff Software Engineer (iOS & Flutter) (Freelance) at Quiet
March 1, 2025 - August 27, 2025
Created QuietOpsToolkit enterprise iOS integration suite with subscription management, analytics, push notifications, and feature flags reducing development time. Enhanced business model by optimizing user flows to increase app subscriptions and revenues. Collaborated cross-team analyzing user journey data to implement strategic features boosting subscription conversion. Developed standardized UI component library and shared business logic frameworks across multiple consumer apps ensuring consistent user experience and faster development. Led development of AI-powered applications including Mentor AI Chatbot with OpenAI integration, wellness, productivity tools, and habit tracking platforms. Established development standards, code review processes, and architectural patterns resulting in maintainable, scalable codebases shared across iOS and Flutter apps.
iOS Team Lead for The Crypto App at TrustSwap
December 1, 2022 - August 27, 2025
Recruited and mentored a high-performing iOS team, transforming an unorganized environment into an agile setting. Led redesign of TheCryptoApp, a cryptocurrency portfolio tracking app with over 4 million downloads, significantly boosting daily active users and engagement. Implemented RSA encryption, OAuth 2.0 authentication, and subscription features enhancing revenue and platform security. Established Scrum methodologies, refined Git strategies, and improved product quality via code reviews.
iOS Team Lead for TheCrypto App at TrustSwap
December 1, 2022 - August 27, 2025
Recruited and mentored a high-performing iOS team, transforming a disorganized environment into a fully agile setting and improving project delivery speed and collaboration. Led comprehensive redesign of TheCrypto App, a cryptocurrency portfolio tracker with 4 million downloads, to increase daily active users and engagement. Implemented RSA encryption, OAuth 2.0 authentication, and pro-subscription features that significantly enhanced platform security and revenue. Established Scrum methodologies, refined Git strategies, and enforced code review processes to improve workflow and product quality. Designed and implemented portfolio tracking, wallet integration, exchange connectivity, and real-time price monitoring features.
iOS Team Lead for TheCrypto App at TrustSwap
December 1, 2022 - August 27, 2025
Recruited and mentored a high-performing iOS team transforming a disorganized setup into a fully agile environment improving delivery speed and collaboration. Led comprehensive redesign of TheCrypto App, a cryptocurrency portfolio tracking app with over 4 million downloads, significantly increasing daily active users and engagement. Implemented RSA encryption, OAuth 2.0 authentication, and pro subscription features enhancing user revenue and platform security. Established Scrum methodologies, refined Git strategies, and implemented code review processes improving workflow and product quality. Designed and implemented portfolio tracking, wallet integration, exchange connectivity, and real-time price monitoring features.
iOS Team Lead for TheCryptoApp at TrustSwap
December 1, 2022 - August 27, 2025
Recruited and mentored high-performing iOS team, transforming a disorganized environment into a fully agile setup with improved project delivery speed and collaboration. Led comprehensive redesign of TheCryptoApp, a cryptocurrency portfolio tracking app with over 4 million downloads, significantly increasing daily active users and engagement. Implemented RSA encryption, OAuth 2.0 authentication, and pro subscription features, considerably boosting user revenue and platform security. Established Scrum methodologies, refined Git strategies, and enforced code review processes, improving development workflow and product quality. Designed and implemented portfolio tracking, wallet integration, exchange connectivity, and real-time price monitoring features.
iOS Team Lead for TheCryptoApp at TrustSwap
December 1, 2022 - August 27, 2025
Recruited and mentored a high-performing iOS team, transforming a disorganized environment into a fully agile setting improving project delivery speed and collaboration. Led comprehensive redesign of TheCryptoApp cryptocurrency portfolio tracking app with over 4 million downloads, significantly increasing daily active users and engagement. Implemented RSA encryption, OAuth 2.0 authentication, and pro subscription features substantially increasing user revenue and platform security. Established Scrum methodologies, refined Git strategies, and implemented code review processes improving development workflow and product quality. Designed and implemented portfolio tracking, wallet integration, exchange connectivity, and real-time price monitoring features.
Staff Software Engineer (iOS & Flutter) at Square1
October 1, 2022 - Present
Led iOS teams delivering high-impact applications such as Riide, MyHome.ie, and Coosto across major clients. Contributed to cross-platform Flutter development for TheBusinessPost, optimizing CI/CD pipelines through Bitrise integration, and driving performance improvements via advanced caching and memory management. Launched new features like Saytv-Chat-SDK and mentored junior engineers on best practices, architecture, and workflows.
Staff Software Engineer (iOS & Flutter) at Square1
October 1, 2022 - Present
Led iOS teams delivering high-impact applications for major clients such as Riide, MyHome.ie, and Coosto. Contributed to cross-platform Flutter development for TheBusinessPost iOS and Android apps, serving a large user base. Optimized CI/CD pipelines by integrating Bitrise with automated testing and deployment processes, significantly reducing deployment times and improving team efficiency. Boosted MyHome.ie app performance via advanced caching and memory management strategies. Launched new user-engagement features for Saytv-Chat-SDK and mentored junior engineers on best practices, code architecture, and workflows.
Staff Software Engineer (iOS & Flutter) at Square1
October 1, 2022 - Present
Led iOS teams delivering high-impact apps for major clients such as Riide, MyHome.ie, and Coosto. Contributed to Flutter development for TheBusinessPost on iOS and Android. Optimized CI/CD pipelines integrating Bitrise with automated testing and deployment, significantly reducing deployment times and increasing team efficiency. Enhanced MyHome.ie app performance through advanced caching and memory management. Launched new features for Saytv-Chat-SDK boosting user engagement. Mentored junior engineers on best practices, code architecture, and workflows.
Staff Software Engineer (iOS & Flutter) at Square1
October 1, 2022 - Present
Led iOS teams delivering high-impact apps for major clients including Riide, MyHome.ie, and Coosto. Contributed to Flutter development for TheBusinessPost across iOS and Android platforms. Optimized CI/CD pipelines with Bitrise, significantly reducing deployment times and increasing team efficiency. Achieved performance improvements in MyHome.ie iOS app through advanced caching and memory management. Launched new features for Saytv-Chat-SDK, enhancing user engagement. Mentored junior engineers in iOS and Flutter best practices, code architecture, and development workflows.
Staff Software Engineer (iOS & Flutter) at Square1
October 1, 2022 - Present
Led iOS teams delivering high-impact apps including Riide, MyHome.ie, and Coosto. Contributed to Flutter development for TheBusinessPost serving a large user base. Optimized CI/CD pipelines integrating Bitrise with automated testing and deployment, significantly reducing deployment times and increasing team efficiency. Achieved significant performance improvements in MyHome.ie app through advanced caching and memory management strategies. Launched new features for Saytv-Chat-SDK increasing user engagement. Mentored junior engineers in best practices, code architecture, and workflows.
Senior iOS Engineer at TrustSwap
March 1, 2022 - August 27, 2025
Modernized legacy codebase of TheCryptoApp into modular Clean Architecture, reducing technical debt and improving maintainability. Developed key features including cryptocurrency portfolio management, exchange integration, and wallet tracking improving user interaction and retention. Enhanced app stability and responsiveness supporting a robust user base with minimal crash rates.
Senior iOS Engineer at TrustSwap
March 1, 2022 - August 27, 2025
Modernized the legacy TheCrypto App iOS codebase using modular Clean Architecture, significantly reducing technical debt and improving maintainability. Developed core features including cryptocurrency portfolio management, exchange integration, and wallet tracking to boost user interaction and retention. Enhanced app stability and responsiveness to support a large and robust user base with minimal crash rates.
Senior iOS Engineer at TrustSwap
March 1, 2022 - August 27, 2025
Modernized legacy TheCrypto App iOS codebase into modular Clean Architecture reducing technical debt and improving maintainability. Developed key features including cryptocurrency portfolio management, exchange integration, and wallet tracking boosting user interaction and retention. Enhanced app stability and responsiveness supporting a robust user base with minimal crash rates.
Senior iOS Engineer at TrustSwap
March 1, 2022 - August 27, 2025
Modernized legacy iOS codebase for TheCryptoApp to modular clean architecture, reducing technical debt and improving maintainability. Developed key features including cryptocurrency portfolio management, exchange integration, and wallet tracking, boosting user interaction and retention. Enhanced app stability and responsiveness supporting a robust user base with minimal crash rates.
Senior iOS Engineer at TrustSwap
March 1, 2022 - August 27, 2025
Transformed outdated TheCryptoApp iOS codebase into modular Clean Architecture significantly reducing technical debt and improving maintainability. Developed key features including cryptocurrency portfolio management, exchange integration, and wallet tracking boosting user interaction and retention. Enhanced app stability and responsiveness supporting a robust user base with minimal crash rates.
Senior iOS Engineer (Part-Time) at PayTabs
December 1, 2021 - August 27, 2025
Expanded the PayTabs iOS SDK with new payment features, significantly increasing adoption among integration partners. Leveraged cross-platform development expertise to refine Flutter, React-Native, and Cordova plugins. Developed the Ionic Native Plugin enabling seamless PayTabs SDK integration with the Ionic platform.
Senior iOS Engineer (Part-Time) at PayTabs
December 1, 2021 - August 27, 2025
Enhanced the PayTabs iOS SDK by adding new payment features, increasing adoption among integration partners. Contributed expertise in cross-platform development by refining Flutter, React Native, and Cordova plugins. Developed the Ionic Native Plugin for seamless PayTabs SDK integration, enabling cross-platform payments.
Senior iOS Engineer (Part-Time) at PayTabs
December 1, 2021 - August 27, 2025
Enhanced PayTabs iOS SDK by adding new payment features significantly increasing adoption among integration partners. Leveraged expertise in cross-platform development to refine Flutter, React Native, and Cordova plugins. Developed Ionic Native Plugin enabling seamless PayTabs SDK integration with Ionic platform for cross-platform payment processing.
Senior iOS Engineer at PayTabs
December 1, 2021 - August 27, 2025
Enhanced the PayTabs iOS SDK with new payment features, significantly increasing adoption among integration partners. Led cross-platform development refinements for Flutter, React-Native, and Cordova plugins. Developed Ionic Native Plugin from ground up for seamless PayTabs SDK integration enabling cross-platform payment processing.
Senior iOS Engineer (Part-Time) at PayTabs
December 1, 2021 - August 27, 2025
Expanded PayTabs iOS SDK with new payment features significantly increasing adoption among integration partners. Led cross-platform development refinement for Flutter, React-Native, and Cordova plugins. Developed Ionic Native Plugin from ground up enabling seamless PayTabs SDK integration with Ionic platform facilitating cross-platform payment processing.
Senior Software Engineer (iOS & Flutter) at Roaa Technology
June 1, 2021 - August 27, 2025
Stabilized Freejna iOS app with a significant crash rate reduction supporting a 500K strong user base. Improved performance and memory efficiency, launched revamped Freejna apps on iOS and Android using Flutter. Led architecture refactoring to reduce technical debt and enhance code quality.
Senior Software Engineer (iOS & Flutter) at Roaa Technology
June 1, 2021 - August 27, 2025
Stabilized the Freejna iOS app by significantly reducing crash rates while supporting a robust 500k user base. Improved app performance and memory efficiency, enhancing responsiveness. Launched revamped Freejna apps for iOS and Android using Flutter, maintaining consistent user experience. Led project-wide architecture refactoring to reduce technical debt and improve code quality.
Senior Software Engineer (iOS & Flutter) at Roaa Technology
June 1, 2021 - August 27, 2025
Achieved exceptional application stability for Freejna iOS app decreasing crash rates and supporting a robust 500k user base. Improved app performance and memory efficiency, resulting in a more responsive user experience. Launched revamped Freejna apps on iOS and Android using Flutter maintaining consistent user experience. Led project-wide refactoring reducing technical debt and improving code quality.
Senior Software Engineer (iOS & Flutter) at Roaa Technology
June 1, 2021 - August 27, 2025
Stabilized Freejna iOS app, significantly decreasing crash rates supporting a robust 500k user base. Improved app performance and memory efficiency for more responsive user experience. Launched revamped Freejna iOS and Android apps using Flutter, maintaining consistent user experience. Led project-wide refactoring effort to reduce technical debt and improve code quality.
Senior Software Engineer (iOS & Flutter) at Roaa Technology
June 1, 2021 - August 27, 2025
Attained exceptional stability for Freejna iOS app significantly reducing crash rates and effectively supporting a robust 500k user base. Improved app performance and memory efficiency resulting in a more responsive user experience. Launched revamped Freejna iOS and Android apps on both platforms using Flutter maintaining consistent user experience. Led project-wide architecture refactoring reducing technical debt and improving code quality.
iOS Engineer at Alamat Tech
June 1, 2020 - August 27, 2025
Designed and developed multiple iOS apps including AladArby (ride-hailing) and Rakeb (transportation), resulting in significant increases in user downloads. Resolved critical bugs and optimized app performance across deployed applications. Implemented intuitive user interfaces and seamless navigation improving overall app usability.
iOS Engineer at Alamat Tech
June 1, 2020 - August 27, 2025
Designed and developed multiple iOS applications including AladarbY (ride-hailing platform) and Rakeb (transportation service), leading to substantial increases in user downloads. Resolved critical bugs and optimized application performance, resulting in significant app stability improvements. Implemented intuitive user interfaces and seamless navigation patterns enhancing overall app usability.
iOS Engineer at Alamat Tech
June 1, 2020 - August 27, 2025
Designed and developed multiple iOS applications including AladArby ride-hailing and Rakeb transportation services leading to significant user download increases. Fixed critical bugs and optimized app performance resulting in substantial stability improvements across deployed apps. Implemented intuitive UI and seamless navigation enhancing overall app usability.
iOS Engineer at Alamat Tech
June 1, 2020 - August 27, 2025
Designed and developed multiple iOS applications including AladArby ride-hailing platform and Rakeb transportation service leading to significant increase in user downloads. Resolved critical bugs and optimized application performance, substantially improving stability across deployed apps. Implemented intuitive user interfaces and seamless navigation patterns enhancing overall application usability.
iOS Engineer at Alamat Tech
June 1, 2020 - August 27, 2025
Designed and developed multiple iOS applications including Aladarby (ride-hailing platform) and Rakeb (transportation service) leading to significant increase in user downloads. Resolved critical bugs and optimized app performance resulting in substantial stability improvements across deployed applications. Implemented intuitive user interfaces and seamless navigation patterns enhancing overall application usability.
iOS Engineer at Development Possibilities
June 1, 2019 - August 27, 2025
Pioneered design and development of advanced iOS applications. Addressed bugs and enhanced performance of established apps. Notable projects include Meshini Guide (iOS).
iOS Engineer at Development Possibilities
June 1, 2019 - August 27, 2025
Pioneered the design and development of advanced iOS applications. Addressed bugs and enhanced performance of established apps to improve user experience.
iOS Engineer at Development Possibilities
June 1, 2019 - August 27, 2025
Pioneered design and development of advanced iOS applications. Addressed bugs while enhancing performance of established apps.
iOS Engineer at Development Possibilities
June 1, 2019 - August 27, 2025
Pioneered the design and development of advanced iOS applications. Addressed bugs while enhancing the performance of established apps.
iOS Engineer at Development Possibilities
June 1, 2019 - August 27, 2025
Pioneered design and development of advanced iOS applications. Addressed bugs while enhancing the performance of established apps.
Mobile Developer at IMC Egypt
January 1, 2019 - August 27, 2025
Developed key iOS and Android apps streamlining internal processes (IMC iOS and IMC Android apps).
Mobile Developer at IMC Egypt (Military Service)
January 1, 2019 - August 27, 2025
Developed key iOS and Android apps streamlining internal processes, including IMC iOS and IMC Android applications.
Mobile Developer (Military Service) at IMC Egypt
January 1, 2019 - August 27, 2025
Developed key iOS and Android apps streamlining internal processes (IMC iOS and IMC Android).
Mobile Developer at IMC Egypt
January 1, 2019 - August 27, 2025
Designed and built key iOS and Android apps streamlining internal processes including IMC iOS and IMC Android while in military service.
Mobile Developer at IMC Egypt
January 1, 2019 - August 27, 2025
Designed and built apps for iOS and Android streamlining internal processes, including IMC iOS and IMC Android.

Education

Bachelor of Computer Science at Assiut University
January 1, 2014 - January 1, 2018
Bachelor of Computer Science at Assiut University
January 1, 2014 - January 1, 2018
Bachelor of Computer Science at Assiut University
January 1, 2014 - January 1, 2018
Bachelor of Computer Science at Assiut University
January 1, 2014 - January 1, 2018
Bachelor of Computer Science at Assiut University, Egypt
January 1, 2014 - January 1, 2018

Qualifications

Add your qualifications or awards here.

Industry Experience

Financial Services, Healthcare, Consumer Goods, Software & Internet, Transportation & Logistics, Media & Entertainment, Real Estate & Construction

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
See more