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Internalizable/README.md

👋 Hi, I’m Elie Sfeir

Senior Software Engineer & Tech Lead building large-scale, production-grade systems used by millions.

🔹 10+ years of experience
🔹 Scaled startups to multi-million-dollar platforms
🔹 Led engineering teams & designed distributed architectures
🔹 Based in Beirut, Lebanon

🌐 https://internalizable.dev
📧 elie@simly.io


🚀 What I Do

I specialize in designing, building, and scaling backend-heavy platforms with a strong focus on:

  • Distributed & event-driven systems
  • High-traffic, high-availability architectures
  • Clean, strongly-typed codebases
  • Engineering leadership & technical direction

I’ve worked across telecom, fintech, education, food delivery, and infrastructure, collaborating with global partners and government entities.


🏗️ Current Roles

Lead Software Engineer — Simly Ltd (2022–Present)

  • Scaled Simly into the largest eSIM marketplace in MENA
  • ~$20M annual sales, 3M+ users
  • Led a team of 10 engineers (frontend & backend)
  • Designed event-driven architectures using RabbitMQ & Kubernetes
  • Built Nx / Turborepo TypeScript systems
  • Integrated with partners like Apple, Booking.com, Shahid, Almosafer
  • Worked with regional telecom providers via custom APIs

Full Stack Software Engineer — Egyptian Ministry of Education (2023–Present)

  • Maintained and scaled ESTest, a national SAT-style platform
  • Built multi-tenant deployments across MENA
  • Integrated Stripe, PayPal, Paymob
  • Supported tens of thousands of concurrent users during exams
  • Built ESAbroad, serving Egyptian students worldwide

🧠 Previous Experience

  • Project Coordinator / Tech Lead — Lyxa
    Designed and led a fully-typed microservices ecosystem using:

    • tRPC
    • RabbitMQ
    • BullMQ
    • Kubernetes CronJobs
  • Backend Software Engineer — Murex Ltd

    • Netty + PostgreSQL backend modules
    • Performance-oriented architecture work
  • Freelance Developer — Spigot (Minecraft) (2014–Present)

    • Early contributor post-Bukkit DMCA
    • Maintained compatibility across Minecraft releases

🧪 Notable Projects & Recognition

  • Quakely — Earthquake detection & early-warning platform
    • Studied and integrated by the Lebanese Ministry of Environment
  • Featured in L’Orient-Le Jour

🛠️ Tech Stack

Languages

TypeScript Java Kotlin Python JavaScript

Frameworks & Libraries

  • Node.js, Express
  • Spring Boot, Ktor, Netty
  • React, Angular, Tailwind CSS
  • tRPC

Infrastructure & Tooling

  • Docker, Kubernetes
  • RabbitMQ, Redis, BullMQ
  • PostgreSQL, MongoDB
  • Nx, Turborepo
  • CI/CD, Git, Cloud APIs

🎓 Education

  • MSc in Quantum TechnologiesOxford University (Upcoming, 2026–2027)
  • BSc in Computer Engineering (Software Engineering)
    Antonine University (2019–2024)

📊 GitHub Stats


🌍 Languages

  • Arabic — Native
  • English — Fluent
  • French — Professional
  • Spanish — Conversational

📌 Notes

Most of my production work lives in private repositories or enterprise environments.
Public repos are typically experiments, tooling, or stripped-down references.

If you’re here for:

  • architecture discussions
  • system design
  • consulting
  • collaboration

Feel free to reach out.


⭐ If you like clean systems, strong typing, and scalable design — you’ll feel at home here.

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