Omar Elnaggar, backend software engineer building robust, dynamic and efficient backend systems.

I specialize in building high-performance backend services, DNS infrastructure, and real-time systems. Focused on crafting scalable, well-architected solutions that are both reliable and efficient.

experience

Tap row for details
Mafazaa · Remote

Contributed to AinaaDNS, a privacy-focused DNS server that filters adult and harmful content. Built a high-performance DNS resolver in Go with custom CoreDNS plugins, Redis caching, and DynamoDB persistence, supporting multiple protection tiers and DNS-over-HTTPS. Integrated backend services with a .NET admin dashboard and collaborated with DevOps to ensure scalable, monitored production deployments.

projects

Selected Works

Byto

2025

Lightweight desktop GUI for yt-dlp

Byto is a lightweight desktop application that provides a clean and intuitive GUI for yt-dlp. It simplifies media downloading by offering an easy-to-use interface, smart defaults, and direct link handling without the need for command-line knowledge. Byto focuses on speed, clarity, and user convenience, making advanced downloading accessible to everyone while keeping the experience smooth, modern, and reliable. The project has reached 1,000+ downloads and has attracted multiple contributors, making it an actively evolving open-source project.

GoVueReactASP.NET Core Web APIyt-dlp

AinaaDNS

2025

Privacy-focused DNS filtering service

AinaaDNS is a privacy-focused DNS service that filters harmful and adult content at the domain level. Built on CoreDNS with custom Go plugins, it delivers fast, adaptive resolution, multi-tier protection and seamless integration with admin tools, providing safe, reliable internet access at scale.

GoDynamoDBRedisDNS

Aggar

2024

Vehicle rental platform

Aggar is a vehicle rental platform that connects customers with vehicle owners securely and efficiently. It offers easy vehicle search, booking, and payment, while enabling renters to list and manage vehicles. With real-time chat, escrow payments, and review systems, Aggar ensures a smooth and trustworthy rental experience.

ASP.NET Core Web APIEF CoreSQL ServerSignalRDapperWorker ServicesStripe APIIMemoryCacheHangfireGitHub ActionsRazor Pages

Byteless

2026

Precise video compression desktop app

Byteless is a lightweight desktop application that simplifies video compression by letting users specify exactly how large they want the output file to be. It uses FFmpeg two-pass encoding to calculate the required bitrate and produce a video that closely matches the target size while preserving as much quality as possible. It supports H.264 and H.265 encoding, real-time progress tracking, drag-and-drop input, automatic FFmpeg/FFprobe discovery, and clean cancellation. The project focuses on making precise video compression accessible without requiring users to understand bitrate calculations or command-line tools.

GoReactTypeScriptWailsFFmpeg

Yaqra

2024

Social media for book enthusiasts

Yaqra is a social media website tailored for book enthusiasts. It provides a rich set of features allowing users to review books, create playlists, engage in discussions, and stay updated with articles and news. Yaqra facilitates a comprehensive social media experience for book geeks.

ASP.NET Core Web APIEF CoreSQL ServerSignalRDapperWorker Services

ELearning

2025

Real-time language learning platform

ELearning is a real-time language learning platform that connects users for collaborative practice through structured sessions and instant messaging. It features interest-based matching, WebSocket and WebRTC communication, and feedback systems to ensure an engaging and effective learning experience.

ASP.NET Core Web APIEF CoreSQL ServerSignalRWebRTC

writing

Essays & Notes