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Internalizable/README.md

Elie Sfeir. Senior software engineer and technical lead in Beirut. Currently at Knowi and Simly. Worked with clients and partners including Paramount, Verizon, Apple, Booking.com, Lockheed Martin, and Telstra. Subtle Minecraft-inspired background.

Website   ·   Email   ·   Work   ·   Code

I'm Elie, a senior software engineer and technical lead in Beirut, Lebanon. I've been writing software since 2014 and leading engineering since 2022, before the AI coding boom.

My work spans telecom infrastructure, national education platforms, and enterprise analytics software.

Knowi

Knowi. Senior Full Stack Engineer, February 2026 to present. Customers include Lockheed Martin, Verizon, Telstra, and Paramount.

I build Knowi's enterprise analytics platform, used by Lockheed Martin, Verizon, Telstra, and Paramount. My work covers the product itself, embedded analytics, and customer integrations.

  • Built the theming and white-labelling system for embedded analytics, from the CSS engine to the visual editor.
  • Delivered Shopify and Recharge integrations, including OAuth, billing, and webhooks.
  • Built AgenticBI's orchestration layer, integrated four LLM providers, and shipped the MCP server and Slack / Teams integrations.

Simly

Simly. Technical Lead, June 2022 to present. 3M+ users, approximately $20M in annual sales, and a team of 10 engineers led. Partner integrations: Apple, Booking.com, Shahid, and Almosafer.

I helped grow Simly into the largest eSIM marketplace in MENA.

  • Led 10 frontend and backend engineers, owning architecture, code review, and technical direction.
  • Built event-driven TypeScript / Node.js services with RabbitMQ and Kubernetes.

Partner integrations I delivered: Apple, Booking.com, Shahid, and Almosafer, alongside regional telecom providers.

Selected code

My first GitHub account was ElieTGM, opened in 2014. It still has my MaintenanceMode plugin from 2016. Here are a few more projects from both accounts and my organizations, with dates linked to their commit history.

Project What's in the repo
ChestGUI
2017 · ElieTGM
A reusable Java API for Minecraft inventory menus, with click callbacks, item builders, and example usage.
OctopusCore
2017 · ElieTGM
A Java server core covering ranks, commands, localization, and game-server state backed by MySQL.
Atlas
2021 · MothMC
A server core with Redis pub/sub messaging, MongoDB persistence, and player ranks. Shared modules for BungeeCord and Paper.
TMJ
2022 · Java
A client/server messaging project built with Netty, MongoDB, and a shared protocol, including server-side authentication.
A* Search
2022 · Java
An interactive maze solver using A* and a Fibonacci heap, with a visual editor and a write-up of the algorithm.
IoT Hub
2022 · iothubsensor
Sensor management and data collection with a C# / .NET backend and a React / TypeScript frontend.

Most of my commercial work is in private repositories. These public projects show where I started and how I approached the code.

Stack

Languages

Java TypeScript JavaScript Kotlin Python

Backend   Node.js Spring Boot Ktor Netty tRPC
Data & infrastructure   PostgreSQL MongoDB Redis RabbitMQ Docker Kubernetes
Frontend   React Angular Tailwind CSS

GitHub stats

Internalizable's public GitHub activity: stars, commits, pull requests, issues, and contributions. Language breakdown across Internalizable's public, non-forked repositories.

Public activity on this account. The language chart covers my own public repos; private work and organization contributions aren't included. Earlier projects are on ElieTGM.

Earlier work, education, and a bit more about me
  • Egyptian Ministry of Education · Full Stack Software Engineer (May 2023 - Feb 2026). Built and scaled ESTest and ESAbroad, integrated exam payments, and supported tens of thousands of concurrent users during peak exam seasons.
  • Lyxa · Project Coordinator / Tech Lead (Sep 2024 - Nov 2025). Led the architecture and engineering workflows for a food-delivery platform using tRPC, RabbitMQ, BullMQ, and Kubernetes.
  • Murex · Backend Software Engineer (Jun - Dec 2023). Built backend modules with Netty and PostgreSQL and worked on application performance.
  • Minecraft / Spigot · Freelance Developer (since 2014). Building plugins and maintaining compatibility across Minecraft releases.

I also co-developed Quakely, an earthquake detection and early-warning project. My work on Quakely and Simly was featured in L'Orient Today / L'Orient-Le Jour.

Education: BSc in Computer Engineering, Software Engineering, Antonine University (2019 - 2024).
Languages: Arabic · English · French · Spanish


For engineering work, architecture discussions, or a chat: elie@simly.io.

Popular repositories Loading

  1. Hive-Bedwars Hive-Bedwars Public

    A recreation of HiveMC's bedwars minigame

    Java 10 2

  2. Maintenance-Mode Maintenance-Mode Public

    A maintenance mode plugin for minecraft

    Java 1

  3. Mpire Mpire Public

    A music recognization desktop application based on Java.

    Java 1 1

  4. A-Star-Search-Algorithm A-Star-Search-Algorithm Public

    A maze solving algorithm using A* algorithm with the help of Fibonacci Heap Trees

    Java 1

  5. Baal Baal Public

    A twitter bot that helps me around twitter.

    1

  6. todo-app todo-app Public

    A to-do app is a simple and intuitive application designed to help users manage their daily tasks and responsibilities.

    TypeScript 1 1