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I’m Saif ur Rehman, a full-stack mobile app developer with 7+ years of experience building and shipping cross-platform products end to end—from UI and clean architecture to backend integration and store releases. I work across Flutter/Dart and modern backend stacks like Firebase, Supabase, and Node.js, and I’m comfortable owning features through design, implementation, testing, and deployment.…I’m Saif ur Rehman, a full-stack mobile app developer with 7+ years of experience building and shipping cross-platform products end to end—from UI and clean architecture to backend integration and store releases. I work across Flutter/Dart and modern backend stacks like Firebase, Supabase, and Node.js, and I’m comfortable owning features through design, implementation, testing, and deployment.

SAIF UR REHMAN

App Developer, Back-End Developer, Developer, +4

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I’m Saif ur Rehman, a full-stack mobile app developer with 7+ years of experience building and shipping cross-platform products end to end—from UI and clean architecture to backend integration and store releases. I work across Flutter/Dart and modern backend stacks like Firebase, Supabase, and Node.js, and I’m comfortable owning features through design, implementation, testing, and deployment.…I’m Saif ur Rehman, a full-stack mobile app developer with 7+ years of experience building and shipping cross-platform products end to end—from UI and clean architecture to backend integration and store releases. I work across Flutter/Dart and modern backend stacks like Firebase, Supabase, and Node.js, and I’m comfortable owning features through design, implementation, testing, and deployment.

Available to hire

I’m Saif ur Rehman, a full-stack mobile app developer with 7+ years of experience building and shipping cross-platform products end to end—from UI and clean architecture to backend integration and store releases. I work across Flutter/Dart and modern backend stacks like Firebase, Supabase, and Node.js, and I’m comfortable owning features through design, implementation, testing, and deployment.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Language

Urdu

Fluent

English

Advanced

Work Experience

Flutter App Developer at ZTABs LLC

April 1, 2025 - October 1, 2025

Led Flutter app development across multiple projects, implemented clean architecture, state management (Provider, Bloc, GetIt), and ensured responsive UI for web and mobile.

Flutter App Developer at Graviton Ventures LLC

August 1, 2024 - October 1, 2025

Developed cross-platform mobile apps using Flutter and Dart, integrated with native Android components, and collaborated with product and backend teams to deliver features.

Flutter Developer (Contract) at Graviton Ventures LLC

March 1, 2024 - September 1, 2024

Developed FlickIt, a digital contact card app featuring NFC chip reading/writing, payments, real-time contact sharing, and push notifications. Optimized UI performance and responsiveness across iOS and Android, integrating core mobile capabilities and user-facing features for a smooth experience.

Mobile App Developer (Contract) at DIDS

April 1, 2023 - October 1, 2025

Contract mobile app developer delivering Flutter and native Android features; collaborated with stakeholders to deliver MVPs.

Senior Flutter Developer at ZTABS LLC

January 1, 2021 - January 1, 2025

Led development of multiple cross-platform mobile and web applications, owning features from design to release. Built and scaled Billed, an invoicing and business management SaaS platform across mobile, web, and Chrome extension. Designed and implemented REST APIs and Firebase backend systems (Cloud Functions, Firestore, Auth), and built Zapier integrations for workflow automation. Set up CI/CD with GitHub Actions and managed releases on Google Play and the App Store. Improved application performance and API efficiency while working in remote teams.

Flutter App Developer at Zap Digital Agency, Sargodha

January 1, 2021 - October 1, 2025

Built Flutter apps on Android, iOS, and web, integrated with Firestore, REST APIs, and Firebase services; contributed to architecture decisions.

Flutter App Developer at IT Hub Technologies, Sargodha

February 1, 2019 - October 1, 2025

Flutter app development; integrated with Firebase and REST APIs; participated in full software life cycle.

Flutter Developer at Zap Digital Agency

January 1, 2019 - January 1, 2021

Built multiple client mobile apps, including the HD Mart grocery delivery app using Flutter, Firebase, and Node.js, which launched on Google Play. Developed a media downloader app and integrated Firebase real-time features and web scraping to deliver responsive, data-driven functionality for users.

Flutter Developer at IT Hub Technologies

January 1, 2018 - January 1, 2019

Developed mobile app features and UI, and assisted with backend integrations for product work. Supported end-to-end implementation by collaborating on UI development and connecting front-end functionality with backend services.

Freelance Mobile App Developer / Product Builder

January 1, 2017 - Present

Designed, built, and published apps on Google Play and the App Store across SaaS, AI tools, marketplace, and utility domains. Managed full lifecycle independently—UI, backend, deployment, and store listing—often working with international clients and remote teams. Delivered multiple notable projects including a ride and parcel delivery marketplace (with phone/OTP auth, location-based driver matching, bilingual UI, and release on both stores) plus emergency support, store locator, and various utility apps.

Freelance Android & Flutter Developer at Freelancing

January 1, 2017 - Present

Freelance work delivering Android native and Flutter cross-platform apps for diverse clients, with commitment to quality and timely delivery.