Hafsa Sajjad
Mobile App Developer specializing in cross-platform application development using Flutter
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About
Creative and results-driven Mobile App Developer specializing in cross-platform application development using Flutter with expertise in modern backend integration, real-time systems, and scalable mobile architectures. Skilled in building high-performance applications with clean UI/UX, REST APIs, WebSocket integration, Firebase services, and AI-powered features. Experienced in delivering remote and project-based solutions across multiple domains including service platforms, AI applications, productivity tools, and social apps.
Passionate about creating seamless user experiences and currently open to freelance, remote, part-time, and contract opportunities.
Experience
Remote Flutter Developer at Filter (2026-02 – Present)
- Successfully delivered multiple Flutter-based mobile applications for international clients across diverse industries.
- Developed cross-platform apps with clean UI, real-time databases, and custom API integrations.
- Implemented AI-powered features and third-party API integrations to enhance app performance and user experience.
Freelance Developer at Remote Work (Fiverr, Upwork, Linkedin) (2023-11 – Present)
- Successfully delivered multiple Flutter-based mobile applications for international clients across diverse industries.
- Developed cross-platform apps with clean UI, real-time databases, and custom API integrations.
- Implemented AI-powered features and third-party API integrations to enhance app performance and user experience.
Junior Flutter Developer at Haachi Technologies (2025-01 – 2025-09)
- Developed and maintained mobile apps for iOS & Android.
- Integrated Firebase Authentication, Google Maps, and Local Notifications.
- Contributed to app performance improvements and UI responsiveness.
Flutter Intern at Haachi Technologies (2024-11 – 2025-01)
- Built and optimized multiple front-end components.
- Implemented key modules such as Google Maps, Notifications using Flutter plugins.
Flutter Intern at AICP (2024-06 – 2024-09)
- Participated in live project development with separate admin and user modules.
- Worked on dynamic event management and multi-role user systems.
AR Intern at AURLAB | SUPERIOR UNIVERSITY (2023-06 – 2023-09)
Internship focused on Flutter mobile app development with AR
- Hands-on experience in building Flutter apps with AR
- Acquired practical insights into delivering high-quality mobile apps
Education
Bachelor in Computer Science in Computer Science – SUPERIOR UNIVERSITY, LAHORE (2020 – 2024)
ADP in Computer Science in Computer Science – SUPERIOR UNIVERSITY, LAHORE (2020 – 2022)
