Karim E.
Mid-Level Flutter Developer
Open to offersNew to PlatformAbout
Karim A. is a seasoned Senior Flutter Developer and Mobile Architect, focusing on delivering comprehensive mobile solutions with over three years of experience. Based in Cairo, Egypt, with openness to relocate to Warsaw, he has spearheaded the development of numerous applications across industries such as e-commerce, fintech, healthcare, and social platforms. An expert in Dart, including Streams and reactive programming, Karim excels in Clean Architecture and BLoC/Cubit state management, having contributed to over ten production applications that demonstrate measurable performance improvements and sophisticated UI/UX integrations. His proficiency extends to payment gateway integrations, real-time WebSocket communication, and using tools like Firebase for backend operations. Karim's leadership is evident as he mentors junior developers and contributes to code reviews to uphold high coding standards. Presently, he seeks to apply his engineering excellence and innovative approach to BrainRocket's high-velocity product team.
Experience
Mobile Developer
Start-up Defenders · 2025 — PresentArchitected and released 3 Flutter applications from the ground up, utilizing Clean Architecture and SOLID principles to promote maintainability and scalability. Designed reactive data layers with Dart Streams and Cubit for effective state management across complex widget structures. Integrated Firebase services including Auth, Firestore, Cloud Messaging, and REST APIs using Dio, enhancing request caching and error-handling. Established coding standards and led code reviews to elevate code quality. Provided mentorship to junior developers on best practices in Flutter and debugging workflows. Collaborated with UI/UX designers using Figma to create pixel-perfect accessible interfaces with custom animations.Mobile Developer
Nofal Seo · 2024 — 2025Directed the development of 5 Flutter applications across various sectors, including service marketplaces and healthcare, which decreased development time through the use of shared component libraries. Integrated the Paymob payment gateway to facilitate secure transaction flows. Enhanced UI/UX with improved animations and layouts, which raised app store ratings. Implemented real-time features using WebSockets for notifications and messaging, elevating user engagement. Expanded Flutter applications to desktop platforms using bitsdojo_window, showcasing cross-platform decision-making. Participated in creating technical documentation and engaged in sprint planning with cross-functional teams.Mobile Developer
Perfect Solution · 2023 — 2024Delivered 3 Flutter applications, including those focused on SEO and family activity sharing, while adhering to deadlines and client specifications. Optimized Firestore queries and integrated Firebase-based real-time features, which reduced server response time. Operated as part of a 4-person Agile team, consistently completing sprints ahead of schedule. Employed OOP and SOLID principles to maintain decoupled and testable codebases. Integrated Google Maps SDK and REST services for location-aware features, managing complex data flows with Dart Streams.Freelance Flutter Developer
MUFIX Community & Independent Clients · 2023 — PresentIndependently developed and launched full-stack mobile solutions, overseeing all aspects from architectural design to publication on the Play Store. Created a lab/medical management desktop application using Flutter and Windows, implementing complex state handling with real-time WebSocket updates.
Skills & Expertise
Education
- Bachelor of Science in Computers and InformationMenoufia University · — — 2023
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