Mobile App Developer · Cairo, Egypt

Mohannad
El-Sayeh

I design and ship native Android and Flutter apps — Kotlin, Jetpack Compose, Dart and clean architecture, from first client meeting to store release.

5.0 · Upwork reviews Top SWE Intern · VOIS / Vodafone
Portrait of Mohannad El-Sayeh, mobile app developer
Android · Flutter
01 — Work

Featured projects

Five shipped apps across Android and Flutter — each with the business goal and the stack that delivered it.

ANDROID →

Breeze

A Jetpack Compose weather app with scheduled alerts and full English / Arabic localization.

KotlinComposeMVVMHiltWorkManager
ANDROID →

PrepPal

An offline-first meal planner with cloud backup and fast multi-filter recipe search.

JavaRxJava3RoomFirebaseMVP
ANDROID TEAM LEAD

CardiAi

An AI heart-diagnostic app I led end-to-end with a cross-functional team — Jetpack Compose UI built straight from Figma, with Paging 3 for large result sets.

KotlinComposePaging 3Figma → Compose
FLUTTER →

HoH+

An AI chatbot and trip planner for RV travelers, with custom routing that avoids low-clearance bridges.

On Google Play & App Store
FlutterDartCustom routingSubscriptions
FLUTTER →

Food Ninja

A food-delivery app with clean architecture and integrated Paymob & Firebase payments.

FlutterBLoCGoRouterPaymob
02 — Experience

Where I've worked

  1. Dec 2024 — Jul 2025
    Remote · US team

    Mobile App Developer · Persist Ventures

    Built a reusable Flutter clean-architecture base used across client apps, led requirement-gathering meetings with clients, and shipped GPS navigation, in-app subscriptions and AI chatbot integration.

  2. Aug — Sep 2024
    Cairo, Egypt

    Mobile App Development Intern · VOIS / Vodafone

    Worked on the My Vodafone UK Android app. Named Top Software Engineering Intern among 25+ colleagues.

  3. Nov 2023 — Mar 2024
    Egypt

    Coding Instructor · iSchool

    Taught computer-science fundamentals to Grade 4 students — breaking down core concepts for young learners.

  4. Sep 2025 — present
    Remote

    Freelance Mobile Developer · Upwork

    Delivering Android and Flutter builds for international clients on a project basis.

03 — Skills

What I work with

Android

KotlinJavaJetpack ComposeCoroutinesFlow / StateFlowHiltWorkManagerRoomRetrofit

Flutter

DartBLoCRiverpodDioGetItFlavors

Architecture & tooling

Clean ArchitectureMVVMMVIMVPFirebaseFastlaneGitHub ActionsClaude CodeCursor
Mohannad El-Sayeh smiling, wearing a lanyard
04 — About

Engineer first, mobile by craft

I'm a mobile app developer based in Cairo, Egypt, focused on building production Android and Flutter apps that are clean under the hood and considered on the surface. I care about architecture that scales, code that reads well, and shipping things people actually use.

My background spans native Android with Kotlin and Jetpack Compose, cross-platform work in Flutter, and leading projects end-to-end — from gathering client requirements to release and CI/CD.

Diploma · 2025–26
Mobile Application Development
ITI — Information Technology Institute
BEng · 91.9%
Computer & Control Engineering
Mansoura University — Excellent with Honors
● Arabic — native ● English — fluent
05 — Contact

Let's build something.

Have a role, a project, or an app idea? Send a message — I read every one and reply quickly.

Accent color