I ship mobile products — and they scale.
Six production Flutter apps across six categories: real-time chat, video editing, finance, notes, weather, and AI utilities.
Architecture-first. Performance-aware. Built to ship.

name:        Mohamed Hamid
role:        Flutter & Mobile Applications Engineer
experience:  3+ years building cross-platform mobile applications
focus:       Production apps · Clean Architecture · Performance engineering
education:   B.Sc. Mobile Applications Design & Programming (in progress)
             Diploma in Software & Databases (Graduated 2023)

I build production-grade mobile applications with a strong focus on architecture, performance, and user experience. My portfolio spans six different product categories — finance, notes, weather, bill-splitting, real-time chat, and video editing — all bound by a consistent engineering practice: Clean Architecture, offline-first data flow, real-time Firebase systems, and AI integrated where it genuinely adds value.

What I care about:

• Writing code that scales — clear layer boundaries, testable services, no hidden coupling
• Shipping fast apps — measuring frame times, profiling startups, optimizing rendering
• Localization done right — bidirectional (Arabic RTL / English LTR) with locale-aware fonts and number systems
• AI as a feature, not a gimmick — debounced calls, provider fallbacks, cached summaries, graceful failure
• Treating mobile engineering as a craft, not a checklist

📱 Mobile
🏗️ Architecture & State
☁️ Backend & Cloud
🌐 Networking & APIs
🗄️ Databases & Storage
🤖 AI
🔌 3rd-Party Integrations
🧰 Dev Tools

Six production-style applications, each targeting a different product category — bound by a consistent engineering practice.

Core idea Mobile video editing system with multi-track timeline and real video export capabilities. Built from scratch in Flutter with FFmpeg — comparable in capability to CapCut.

• Multi-layer timeline editor
• Video cutting, trimming, and merging
• Text overlays and animations
• Audio recording and synchronization
• Real-time preview system
• FFmpeg export pipeline
• Thumbnail generation for timeline navigation

• Clean MVVM architecture
• Provider state management
• FFmpeg-kit integration
• VideoPlayer for preview handling
• Firebase for authentication and storage

Import media → timeline editing → preview → FFmpeg export → save or share

• Synchronizing multiple media streams on the timeline
• Maintaining smooth preview performance across multi-clip sequences
• Building dynamic FFmpeg filter_complex pipelines
• Handling large media files efficiently
• Generating thumbnails for fast scrubbing

🔗 Repository  ·  🎥 Demo on LinkedIn

Core idea A modern Arabic-friendly chat system with real-time messaging and social features — similar to WhatsApp and Telegram.

• Real-time chat using Firestore streams
• Online presence system with onDisconnect handling
• Typing indicators and read receipts
• Group chats and private messaging
• Stories system
• QR-based friend adding
• Push notifications using Firebase and OneSignal
• Full RTL and LTR support in the same chat system

• MVVM with Provider / Riverpod pattern
• Firebase backend for real-time data
• Repository pattern for data abstraction

User action → Firestore update → stream listener → UI update

🔗 Repository

Core idea Most currency apps only show numbers — Sarfli turns currency conversion into context and understanding. It combines real-time FX rates, offline caching, AI insights, alerts, and charts in one structured product.

• Real-time conversion for 160+ currencies using ExchangeRate API
• AI insights per currency pair using Gemini with fallback to OpenAI
• Favorites system to track key currency pairs
• Price alerts with push notifications based on percentage change
• Interactive charts for 24h / 7d / 30d trends
• Offline mode with Hive caching and stale-data indicator
• Full Arabic-first RTL interface with proper typography and number handling
• Firebase authentication with multi-login options
• Cloud sync for favorites and alerts across devices
• AdMob monetization with banner, native, and interstitial ads

• Clean Architecture with feature-based modules
• Riverpod for state management
• Repository pattern separating API, cache, and Firebase layers
• Dio for networking with retry and timeout control

UI → ViewModel → Repository → API or Cache → Firebase sync

• Parallel initialization on app startup
• Cached-first rendering for instant UI response
• Debounced AI calls with fallback summaries
• Offline-first architecture with graceful degradation

🔗 Repository

Core idea A structured notes system designed for Arabic users — with offline-first storage, rich media support, and AI-powered productivity tools.

• Block-based note editor with a structured content system
• Media support including images, audio, video, and files
• AI tools for summarization, OCR, and task extraction
• Real-time collaboration and sharing via Firebase
• Calendar integration for note scheduling
• Biometric lock for secure notes
• Offline-first storage using Hive with sync system
• Multi-language support with full RTL design
• Export notes as PDF with branded formatting
• Cloud sync and user management via Firebase

• MVVM with Clean Architecture
• Domain-driven separation between entities and data sources
• Riverpod for state management
• Repository pattern with local and remote layers

Create note → store locally → sync cloud → optional AI processing → export or share

• Arabic-first UI design system
• Offline-first behavior
• Modular feature structure
• Scalable note data modeling

🔗 Repository

Core idea Convert restaurant receipts into structured data using AI — and split costs automatically between people.

• Receipt scanning using the camera
• AI extraction of items and prices using Gemini
• Automatic structuring of bill data
• Flexible split modes — equal, per-item, or custom per-person
• Tax and tip handling
• Shareable bill-summary images
• Offline local storage with Hive
• Arabic-first UI with a simple user flow

Capture image → AI extraction → structured bill → assign people → calculate split → share result

• Extracting structured data from noisy receipt images
• Handling mixed-language receipts
• Building flexible splitting logic
• Generating shareable bill outputs

🔗 Repository

Core idea Weather is not just data — it is daily experience and decision-making input. Skyly transforms weather into mood-based interaction and lifestyle guidance.

• Real-time weather using WeatherAPI
• Dynamic character system that reflects weather conditions
• Smart local summaries without external AI
• Outfit recommendations based on weather conditions
• 24-hour timeline and 7-day forecast
• Activity scoring system for outdoor, walking, and exercise
• Full Arabic and English localization with RTL support
• Offline caching for fast startup
• Lightweight AdMob integration

• Single-screen-focused architecture
• Riverpod for state management
• Service layer for weather logic and caching
• Local rule-based intelligence instead of AI APIs

• Weather-to-mood mapping engine
• Outfit decision-tree system
• Activity scoring algorithm based on weather factors
• Smart message generator for daily summaries

🔗 Repository

A full-stack workspace reservation system. Flutter handles the mobile client; Laravel powers the REST API.

Responsibilities & engineering

• Designed and implemented the entire Flutter client — auth flows, workspace browsing, dynamic booking screens
• Integrated Laravel REST APIs with typed response handling and unified error validation
• Implemented authentication, session persistence, and full reservation lifecycle (create → confirm → cancel)
• Performance: lazy-loaded lists, cached network images, debounced search

🔗 Repository

A full-stack e-commerce mobile app with Stripe payments and Firestore-managed catalog.

Responsibilities & engineering

• Implemented product catalog, product details, cart, and full checkout flow
• Integrated Stripe for secure payment processing
• Managed product/order state via Provider, with reactive Firestore streams
• Bilingual (Arabic / English) UI with light & dark themes

🔗 Repository

A reading application engineered around typography and rendering performance — responsive surface, jank-free scrolling across long surahs, dynamic content loading with local storage.

🔗 Repository

Interactive educational Flutter application — quiz logic, real-time scoring, responsive UI.

🔗 Repository

Across all 6 flagship projects — you are not building isolated apps. You are building a consistent product-engineering portfolio.

Six production-grade applications across six different product categories — finance, notes, weather, utilities, chat, and media editing — bound together by a shared engineering practice:

This is a complete system-level portfolio. Each project targets a different product category — finance, notes, weather, utilities, chat, and media editing.

Architecture        →   Clean Architecture · MVVM · clear data/domain/presentation boundaries
State Management    →   Riverpod (AsyncNotifier, Notifier) · Provider for legacy stacks
Backend Integration →   Firebase (Auth, Firestore, RTDB, FCM) · Laravel REST · Stripe · Gemini · OpenAI
Persistence         →   Hive · SQLite · SharedPreferences · cache-first patterns with TTL
Localization        →   Arabic (RTL) + English (LTR) · locale-aware fonts + numeral systems
Performance         →   Frame profiling · RepaintBoundary isolation · ABI splits · R8 minification
Testing             →   Unit tests for business logic · widget tests for theme/locale toggles

B.Sc. — Mobile Applications Design & Programming  ·  Expected 2026 University College of Applied Sciences

Diploma — Software & Databases  ·  Graduated 2023 University College of Applied Sciences

Open to remote work, freelance contracts, and collaborations on serious mobile products.