👋 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
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 Technologies — Oxford 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.