Sana Ullah
Crafting smooth, high-performance experiences
I build Flutter apps that feel calm, fast, and production-ready — the kind people keep on their home screen.
Over 3.8+ years I've shipped 36+ apps to the Play Store and App Store, published 11+ open-source packages on pub.dev, and landed 23+ open source contributions to the Flutter framework itself and others. Recent work spans across healthcare, consumer AI, medical-device integration and many other domains.
I care most about the details users feel: startup time, frame pacing, and interfaces that stay calm under load.
- 3.8+
- Years shipping
- 36+
- Apps published
- 11+
- Packages
- 23+
- OSS contributions
Experience
Flutter Developer
Jul 2026 — Present
Afex Digitals· Lahore, Punjab, PakistanFull-timeCurrent
- Working as a senior Flutter Developer and developing cross platform applications for Android and iOS.
- Own end-to-end Flutter delivery across Android and iOS, with 25+ apps shipped to date, covering architecture decisions, release engineering, and store submission.
- Ship AI-assisted consumer applications spanning health tracking, document tooling, and creative utilities to the Google Play Store and Apple App Store, collaborating within a team of 4 Flutter developers.
- Flutter
- Dart
- Kotlin
- Swift
- Firebase
- REST APIs
- AdMob
Flutter Developer
Aug 2024 — Present
Mega Minds Studio· RemotePart-timeCurrent
- Working on diverse range of android applications in different categories
- Brought back for a second engagement, delivering Flutter feature work remotely alongside concurrent client commitments
- Flutter
- Dart
- Java
- Kotlin
- AdMob
- Firebase
- REST APIs
- Ad Networks
Flutter Developer
Jul 2024 — Jun 2026
Cross Sonic Pvt LTD· Lahore, Punjab, PakistanFull-time
- Leading mobile development initiatives for healthcare applications, focusing on medical device integration and real-time device data workflows.
- Directed mobile development for healthcare applications through 5+ production releases, owning full-cycle architecture, feature delivery, and deployment for 3 international clients across separate domains.
- Architected a custom domain-specific scripting language and execution engine in Java for medical hardware integration, eliminating code changes whenever command configurations change.
- Engineered a native Android serial communication layer for specialized medical devices, covering command transmission, response parsing, and protocol execution for real-time hardware workflows.
- Developed native Android applications in Java and Kotlin integrating Google Health Connect, third-party APIs, and client-specific business logic.
- Delivered AI-powered Flutter applications featuring intermittent fasting workflows, calorie tracking, and cloud-backed architectures built on the OpenAI and Gemini APIs.
- Flutter
- Dart
- Java
- Kotlin
- Firebase
- REST APIs
- AdMob
- Hardware Integration
Flutter Developer
Dec 2023 — Apr 2024
ITZone Technology· RemotePart-time
- Brought back for a second engagement, delivering Flutter feature work remotely alongside concurrent client commitments.
- Worked on multiple projects including a car rental system
- Flutter
- Dart
- Firebase
- Stripe
- Wompie
- Figma
- REST APIs
Flutter Developer
Jun 2023 — Jul 2024
Mega Minds Studio· Multan, Punjab, PakistanFull-time
- Developed and published multiple consumer applications on Google Play Store, working with international clients on diverse mobile app projects.
- Sole Flutter developer for a large-scale wallpaper platform serving 3M+ users, owning architecture, feature development, third-party integrations, and Play Store deployment.
- Cut app crash rate by 70% and improved load times by 40% through Firebase Crashlytics monitoring and targeted performance optimization.
- Deliver 15+ consumer Android applications across the wallpaper, utility, and lifestyle categories, from feature build through Play Store release.
- Integrated Firebase Authentication, Firestore, Cloud Messaging, Analytics, and REST APIs across multiple production applications.
- Flutter
- Dart
- Firebase
- Ad Networks
- REST APIs
Flutter Developer
Mar 2023 — May 2023
ITZone Technology· Multan, Punjab, PakistanFull-time
- Developed a comprehensive restaurant ordering application with offline-first architecture, payment integration, and intuitive Material Design UI.
- Built Flutter applications powered by Google ML Kit, implementing 9+ on-device ML features including barcode scanning, face detection, object detection, pose detection, text recognition, and smart reply.
- Flutter
- Dart
- Firebase
- Stripe
Flutter Developer
Nov 2022 — Feb 2023
Tech Storm Software House· Multan, Punjab, PakistanFull-time
- Built e-commerce marketplace application with comprehensive vendor management, real-time chat functionality, and secure payment integration.
- Headed frontend development for a production multi-vendor e-commerce marketplace launched on both the Apple App Store and Google Play Store, shipping every customer-facing module: product catalog and variations, cart and checkout, order tracking, vendor storefronts, wallet and loyalty points, coupons and flash deals, and real-time chat.
- Supported onboarding of 15+ vendors onto the marketplace, validating seller registration, storefront setup, and order flows end to end.
- Implemented real-time data synchronization, push notifications, secure payment gateway integration, and responsive multi-language Flutter interfaces backed by REST APIs.
- Flutter
- Dart
- Firebase
- REST APIs
Toolkit
- Languages
- Dart
- Java
- JavaScript
- Kotlin
- Python
- Swift
- TypeScript
- Frameworks
- Android SDK
- Flutter
- Keras
- PyTorch
- React Native
- Scikit-learn
- TensorFlow
- iOS SDK
- Mobile
- Android
- App Store
- Deep Linking
- In-App Purchases
- Play Store
- Push Notifications
- iOS
- Backend & data
- Firebase
- Hive
- Isar
- JSON
- Local Storage
- REST APIs
- SQLite
- Tooling & DevOps
- Android Studio
- CI/CD
- CocoaPods
- Fastlane
- Git & GitHub
- GitHub Actions
- Gradle
- Microsoft Azure
- Postman
- Xcode
- Design
- Adobe XD
- Figma
- Material Design
- Responsive UI
- UI/UX Design
Education
2018 — 2022
Bachelor of Science in Information Technology
University of Edcuation, Lahore
2016 — 2018
Intermediate in Computer Science
BISE Multan
2014 — 2016
Matriculation
BISE Multan