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Mohamed Salem Younes

ABOUT

The engineer behind the code

Backend-focused software engineer with 3+ years of professional experience designing, building, and maintaining production systems. Core stack is Python/Django and Node.js/NestJS, with PostgreSQL as primary database — comfortable across the full stack with React/Next.js when a project needs it. Also works with containerized deployments, cloud infrastructure on AWS and GCP, and CI/CD pipelines.

Day to day that means Django/DRF or NestJS on the backend, PostgreSQL as the default database, and Docker for anything that needs to run the same way in production as it does locally. When a project needs a frontend too, it's React or Next.js on top of the same backend — one person owning the whole vertical slice rather than a handoff between specialists.

Outside client and employer work, Mohamed Salem Younes builds and ships his own products end to end — see the projects page — which is where a lot of the AI-integration and PWA/offline experience below comes from.

B.Sc. Computer Science, Ain Shams University (2017–2021). Native Arabic speaker, full professional proficiency in English — comfortable working async with clients across timezones, Cairo, Egypt (GMT+2, GMT+3 in summer).

Download CV (PDF)Freelance profile (PDF)

The CV is the full employment history. The freelance profile is a one-page summary of what I build and what I've shipped — better if you're hiring for a project.

EXPERIENCE — CHANGELOG

Where the work happened

  1. a1c7f92Presentsince Dec 2025

    Software Engineer · SaySoft

    Currently working here.

    • Build multi-tenant SaaS platforms — property/union management, live-class tutoring, fleet management, and dental clinics — with NestJS, Prisma, PostgreSQL, and React, deployed on AWS with Terraform-managed infrastructure.
    • Built Opal, a multi-branch dental clinic SaaS: 132 permission-guarded endpoints, tenant isolation enforced by Postgres row-level security, an animated SVG tooth chart, and 800+ automated tests.
    • Designed multi-tenant auth and RBAC (JWT, WhatsApp OTP, magic links), a double-entry accounting engine, and Paymob subscription billing with verified webhooks.
    • Shipped Ittihad, Fleet Management, Nuqta, Mawid, and Opal, plus client and company websites — including a photographer's portfolio with 100/100 Lighthouse accessibility and SEO.
    case studies:OpalIttihadFleet ManagementOmar AbolabanNuqtaMawidSaySoft website
    NestJSPrismaPostgreSQLReactAWSTerraformNext.js
  2. e48b310Presentsince Jun 2025

    Backend & Cloud Engineer (Part-time) · Tameni

    Currently working here.

    • Own the Django REST backend of a Flutter health app — Firebase auth, role-based access control, family profiles, and FCM push notifications.
    • Built the lab-report pipeline: PaddleOCR plus Gemini extraction in Celery, feeding a five-stage matching engine (exact, alias, fuzzy, batched Gemini, human review queue).
    • Protect patient PII with field-level encryption and hashed lookups, a two-step GDPR-style deletion flow, and audit logging on every endpoint.
    • Deploy and run production on Google Cloud (Docker, Gunicorn, Nginx); 1,000+ commits and 845 test cases.
    case studies:Tameni
    DjangoDRFCeleryGCPFirebaseGemini LLMPaddleOCR
  3. 9d2a147Mar 2025 – Dec 2025

    Software Engineer · Oasis for Advanced Technology Systems

    • Built and maintained DRF backends across medical education, real estate, clinics, and gyms.
    • Contributed to a Udemy-style medical education platform — Zoom sessions, VideoCipher streaming, Paymob subscriptions.
    • Rapidly prototyped client-facing UI/UX demos with AI-assisted coding to accelerate decisions.
    • Containerized applications with Docker and managed Linux production servers.
    Django REST FrameworkDockerLinuxPaymob
  4. 6f0c885Oct 2024 – Jan 2025

    Backend & Cloud Developer (Internship) · Coformatique

    • Developed backend services with NestJS and Prisma ORM against PostgreSQL.
    • Deployed Dockerized apps on AWS (ECS/Fargate), automated CI/CD with Bitbucket Pipelines.
    • Contributed to Scrum ceremonies and code reviews.
    NestJSPrismaAWS ECSBitbucket Pipelines
  5. 3b7e421Aug 2024 – Oct 2024

    Python Developer (Internship) · NeuronetiX

    • Implemented Python/Django backend components and refactored legacy modules for maintainability.
    • Collaborated with product and ML teams on scalable feature design.
    PythonDjango
  6. 0a49d1cOct 2022 – Apr 2024

    Software Engineer · Research & Development Center (Air Defense Commands)

    • Developed computer vision and AI-driven systems with Python, OpenCV, and C#.
    • Led facial recognition and object-tracking modules, improving accuracy and robustness.
    • Delivered secure, on-premise production solutions with cross-functional teams.
    PythonOpenCVC#Computer Vision