YSH

Hello, I'm

Youssef Salem Hassan

Flutter & Next.js Developer

I deliver production-ready mobile apps—and the web dashboards and landing pages teams need beside them—with APIs, bilingual UX, and pragmatic architecture.

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At a glance

20+

Delivered milestones

2+

Years focused builds

16+

Core technologies

Open-source workUpwork · 5★

Figures summarize portfolio milestones and tooling focus—they are not a substitute for referencing specific engagements.

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Portrait photo of Youssef Salem Hassan

About

Mobile-first delivery, pragmatic web tooling, bilingual products

I build Flutter clients that survive real backends—large REST catalogs, Laravel hand-offs, Firebase and Supabase, notifications, bilingual ARB pipelines, RTL, and timelines that resemble agency or in-house engagements rather than demos.

When teams also need parity on the web, I ship complementary Next.js marketing pages or admin dashboards (Tailwind + App Router patterns) aligned with mobile releases so stakeholders get one coherent narrative.

CS undergrad at Nile University (graduation thesis: multimodal sentiment / EmoSense trajectory). Comfortable collaborating with founders, recruiters, designers, or backend leads on scope cuts, rollout order, and what “done” ought to prove in production telemetry.

Stack snapshot

DartPythonJavaScriptSQLFlutterNative UI/UX DesignResponsive Web AppsGetXBLoC PatternRESTful APIFirebaseSupabaseCustom BackendGitHubVercelFirebase Messaging

20+

Projects Completed

2+

Years Experience

16+

Technologies

5★

Upwork rating

Egypt

Education

Nile University

B.Sc. Computer Science (in progress)

Graduation project

EmoSense — Enterprise Emotion Recognition Platform (graduate-level research)

Relevant coursework & programs

  • DEPI Microsoft ML Engineer track: Capstone; Statistics & Linear Algebra; Data Science with Python; ML; Azure AI Fundamentals & Engineer Associate; MLOps (MLflow/HF); GANs; NLP; Prompt Engineering (Oct 2024 – May 2025).
  • Route IT — Flutter Development Diploma covering mobile development, state management, and UI/UX (Feb 2025 – Jun 2025).

My Unique Expertise

How I practice—scaled delivery, disciplined architecture, bilingual products, and pragmatic ML where it belongs in the roadmap.

Cross-platform product delivery

End-to-end Flutter builds for Android, iOS, web, and desktop with Material 3, responsive layouts, and release-ready structure informed by production client work.

Clean Architecture & BLoC at scale

Feature-first layering (domain, data, presentation), BLoC/Cubit, routing with go_router, and DI patterns that stay maintainable across large API surfaces.

Production APIs & bilingual UX

Dio-backed REST integration, auth flows including social sign-in, notifications and background work, plus Arabic/English UX with intl/ARB and full RTL support.

ML integration in mobile apps

Bridging computer vision and NLP prototypes with Flutter clients—emotion analysis, facial recognition patterns, and research-driven features aligned with coursework and graduate project direction.

My Tech Stack

A collection of technologies I am proficient in and enjoy working with

Languages

#languages
  • Dart
  • Python
  • JavaScript
  • SQL

Frameworks & Libraries

#mobile-development
  • Flutter
  • Native UI/UX Design
  • Responsive Web Apps
  • GetX
  • BLoC Pattern

Miscellaneous

#backend-cloud
  • RESTful API
  • Firebase
  • Supabase
  • Custom Backend
  • GitHub
  • Vercel
  • Firebase Messaging

Experience

Roles and engagements from my journey so far

  • Technology 92

    Flutter Engineer — Job Marketplace Client

    Feb 2026 — PresentRemote / Egypt

    • Built a cross-platform Flutter client with Clean Architecture (per-feature domain, data, presentation), BLoC, go_router, GetIt, and Dio integration against a Laravel API with 50+ endpoints (auth including Google Sign-In, profiles, KPIs, attendance with background timers and notifications, jobs, marketplace, and settings).
    • Delivered bilingual Arabic/English UX with RTL support using intl/ARB workflows (~343 keys per language) and Material 3 UI across Android, iOS, web, and desktop targets.

  • Digital Egypt Pioneers Initiative (DEPI)

    Software Development — Cross-Platform Mobile App Developer (Internship)

    Nov 2025 — PresentGiza, Egypt · Hybrid

    • Internship track on designing, developing, and maintaining cross-platform mobile apps with Flutter, responsive layouts, and user-centered UI.
    • Worked through intensive mobile-development content aligned with what professional mobile engineers use in practice.

  • Mostaql.com · Freelance

    Mobile App Developer

    Apr 2025 — Sep 2025Remote

    • Delivered Flutter/Dart freelance work end to end—from scoping client needs to polished releases on the Mostaql platform.
    • Integrated REST APIs, state management patterns, and production-minded structure for maintainable mobile code.

  • Early Flutter Internships — CodeAlpha & Uneeq Interns · Mar 2025 · Remote

    Flutter Developer · Internship

    Mar 2025 — Mar 2025Remote

    • Two short remote internships (CodeAlpha and Uneeq Interns) focused on Flutter fundamentals: Dart, widgets, navigation, API consumption, debugging, and delivering small features on tight March 2025 timelines.
    • Hands-on practice across both cohorts—mobile-first habits, async collaboration, and incremental UI flows ready for critique in remote settings.

  • Route

    Route Flutter Diploma (Internship)

    Feb 2025 — Jun 2025Egypt · Hybrid

    • Structured diploma on Flutter development: Dart fundamentals, widgets, routing, APIs, state management, and UI/UX skills.
    • Hands-on coursework and projects reinforcing production-ready Flutter practices.

  • Digital Egypt Pioneers Initiative (DEPI)

    Microsoft Machine Learning Engineer (Internship)

    Oct 2024 — May 2025Cairo, Egypt · Remote

    • Microsoft ML Engineer cohort: statistics, supervised learning, ML engineering on Azure (AI Fundamentals & engineer-level topics), Python, MLOps (e.g., MLflow, Hugging Face), and capstone work.
    • Explored NLP, prompt engineering, and advanced topics including GANs, with emphasis on reproducible pipelines and cloud tooling.
    • Hands-on labs and projects blending data modeling, algorithm design, and real-world ML workflows.

  • Telecom Egypt

    Flutter Mobile Application Development Internship

    Jul 2024 — Sep 2024Cairo, Egypt · On-site

    • Two-month Flutter internship progressing from Dart and UI basics through navigation, HTTP/JSON, SQLite, Firebase, maps, multimedia, state management with BLoC and Provider.
    • Applied software engineering fundamentals (SOLID, Agile) with tools including Trello and Adobe XD; built ecommerce, social, todo, and chat exercises.
    • Graduation showcase: Electric Vehicle Finder app integrating Flutter, Google Maps, Firebase, and BLoC — awarded Telecom Egypt “We” internship certification.

Services

How I collaborate with founders, SMEs, hiring teams, and partner agencies—narrow scope lists, clearer delivery.

  • Cross-platform mobile apps (Flutter)

    Android, iOS, web, and desktop shipped from one codebase with Clean Architecture and BLoC or GetX as the product demands.

  • Marketing sites & admin dashboards (Next.js)

    Bilingual SSR/SSG layouts, Tailwind-first UI, forms and SEO—when clients need credibility and tooling around the native app.

  • REST, Firebase & Supabase integration

    Auth—including social providers—notifications, caches, typed errors across large Laravel or Node surfaces.

  • UI implementation & bilingual UX

    Material 3, RTL parity, spacing and typography tuned for skim-first stakeholders and Arabic-first audiences.

  • Performance and maintainability

    Structure that survives scope growth: feature modules, codegen where it saves time, pragmatic refactors ahead of milestones.

  • ML-aware product features

    Pairing Flutter clients with CV/NLP workloads when inference belongs in-product—not slide-deck only.

Featured work

Six production-shaped case studies (mobile + web) with measurable context. Open the brief for narratives, screenshots, and extended outcomes.

EmoSense - Enterprise Emotion Recognition Platform — Enterprise-grade emotion recognition platform for customer service optimization and sentiment analytics
Featured

EmoSense - Enterprise Emotion Recognition Platform

Flutter + TensorFlow · Graduate research project

Context

Organizations struggle to operationalize emotion signals from text, voice, and video at enterprise scale while keeping latency acceptable and access tightly governed.

Contribution

Graduate capstone engineer: Flutter client architecture (Clean Architecture/BLoC/20+ flows) aligned with multimodal ML research direction.

Outcome

Multimodal analysis roadmap spanning text, voice, and video with production-minded UX scaffolding.

+2 more documented in the brief

Tech stack

Flutter 3.32.1Dart 3.0+Clean ArchitectureBLoC/CubitPython+11 more
Technology 92 — Job Marketplace App — Flutter job marketplace with Clean Architecture, BLoC, Dio, and full Arabic / English localization against a Laravel API
Featured

Technology 92 — Job Marketplace App

50+ API endpoints · 343 translation keys · Android, iOS, Web, Desktop

Context

Employees needed one reliable mobile surface for authentication, attendance with timers and notifications, KPIs, jobs and marketplace flows, and profile settings—all synchronized with a large Laravel backend across many endpoints.

Contribution

Implemented the cross-platform Flutter client: feature-wise Clean Architecture, BLoC, go_router/GetIt/Dio across 50+ endpoints, bilingual ARB/intl parity on Android/iOS/web/desktop.

Outcome

Unified client covering auth (including Google Sign‑In), profiles, KPIs, attendance, jobs/marketplace, and settings on one codebase.

+2 more documented in the brief

Tech stack

FlutterDartflutter_blocBLoC/CubitClean Architecture+8 more
VOXA — Admin Dashboard — Next.js admin console for VOXA — analytics, moderation, users/posts/chats/places, bilingual RTL, Supabase + JWT auth

VOXA — Admin Dashboard

Full analytics + moderation console · Bilingual RTL

Context

Operating a voice-first social graph requires trusted admins to moderate posts, chats, places, analytics, and inbound web feedback without exposing service-role secrets client-side.

Contribution

Built Supabase-backed admin dashboards: TanStack tables, KPI charts, guarded API routes/JWT flows, bilingual RTL parity with the Flutter product.

Outcome

Full moderation surface spanning users, voice posts, threaded comments, chats, places, reports, and broadcasts.

+2 more documented in the brief

Tech stack

Next.jsReactTypeScriptTailwind CSSnext-intl+9 more

Certificates

Selected courses, diplomas, and professional programs.

View all certificates

Flutter Development Diploma

Route IT Training Center

Issued: February 2025

View PDF

DEPI Microsoft ML Engineer

Digital Egypt Pioneers Initiative (DEPI)

Issued: October 2024

View PDF

Mobile Application Developer by Flutter

Telecom Egypt

Issued: July 2024

View PDF

Sprints x Microsoft Summer Camp - Mobile Development

Sprints x Microsoft

Issued: November 2025

View PDF

Recommendations

Teammates, mentors, and peers — from graduation work, Nile University, and shipped projects.

  • “Youssef was the driving force behind our graduation project as our Team Leader. He managed the team dynamics and timelines exceptionally well while actively developing core features of the mobile app using Flutter. Working alongside him was a great experience. While I focused on the Machine Learning aspect, Youssef ensured the mobile ecosystem was robust and well-structured. I highly recommend him to any team looking for a proactive developer with solid leadership capabilities.”

    Abdulhady Ibrahim

    Frontend Developer (React.js) · Computer Science Graduate · Responsive web interfaces

  • “I have known Youssef for 4 years, and I can confidently say he is one of the most dedicated and trustworthy individuals I know. He approaches every challenge with a positive attitude and strong commitment. His reliability and strong sense of ethics make him a pleasure to work with and a valuable asset to any professional environment. I highly recommend him.”

    Ahmed Bahgt

    Frontend Developer · Data Analyst

  • “I strongly recommend Youssef as an outstanding mobile developer and team member. Throughout our collaboration, he has consistently demonstrated exceptional technical skills combined with a positive attitude and excellent communication abilities. These qualities make him a natural team player who fosters collaboration and keeps everyone aligned, even during challenging projects. Any team would be fortunate to have Youssef. He not only delivers high-quality work but also elevates those around him. I give him my highest recommendation without reservation.”

    Ahmed Elnazer

    Machine Learning Engineer · Data Scientist · Data analyst trainee @ UGDC

  • “Youssef is an exceptional engineer with whom I have collaborated on several projects. His technical knowledge is outstanding, and his work in mobile development is consistently impressive and of the highest quality. He demonstrates professionalism, creativity, and a strong commitment to delivering excellent results.”

    Yassin Saad

    Co-Founder · Vionex Digital Solutions

  • “Youssef is a dedicated and reliable professional who always brings a positive attitude to the team. He consistently delivers high-quality work and is great at solving problems. I truly enjoyed studying with him and highly recommend him for any future opportunities.”

    Elhossain Emad

    Bachelor's degree in Computer Engineering

  • “I had the opportunity to work with Youssef on a Flutter application, and his professionalism and technical skills stood out from day one. He has a strong command of Flutter, quickly understands requirements, and consistently delivers clean and efficient code. Youssef is also a reliable team member who communicates well and actively contributes to solving challenges. He would be a valuable asset to any development team.”

    Belal Mohamed

    Flutter Developer · Computer Engineering Student

  • “I enthusiastically recommend Youssef Hassan, whom I know from Nile University, where we both studied Software Engineering. He is a reliable and collaborative peer who demonstrates a strong drive to master complex technical concepts.”

    Nour Eldin Saad

    Student · Nile University

Let’s ship the next milestone

Whether you already have backlog tickets or still shaping the idea—send specifics and timelines. Expect a pragmatic reply.

Compose email

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Project brief

Share goals, timelines, stacks, languages, platforms, constraints—I'll respond with next steps.

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Prefer email or offline?

youssef.salem.hassan582@gmail.com

Location

Egypt

If your roadmap needs a disciplined Flutter teammate—or a bilingual web surface wrapped around shipping apps—pitch me via email anytime.