const khaled = {
  role: "Senior Full-Stack Engineer",
  experience: "5+ years",
  stack: "TS/JS",
  focus: "Backend-oriented with product mindset",
  passions: ["Open Source", "Tech Blogging", "System Design"],
  currentlyAt: "Sakneen",
  funFact: "Padel enthusiast 🎾"
};

Senior full-stack engineer by day, Tech blogger and open source enthusiast by night 🌙

Dec 2020 - Jun 2022, Sep 2024 - Present

Real estate SaaS platform providing end-to-end solutions for developers

• 🏗️ Architected the backend technical interview process with advanced scenarios (lost-update handling, reservation overlaps)
• 🔍 Managed Algolia search engine, building and synchronizing searchable indexes
• 📐 Designed scalable REST APIs using NestJS with MongoDB NoSQL patterns

Aug 2022 - Aug 2024

Fintech company automating expense management for businesses

• 📈 Increased customer base by 1,500 users in 3 months via employee self-signup flow
• 🚀 Boosted vendor card adoption by 4.5% in 2 weeks
• 🎯 Owned the "features gateway" microservice, handling cross-team feature requests
• 🛠️ Designed REST APIs using Kotlin Dropwizard and Node.js Express

Jun 2021 - Present

"I can't say enough things about Khaled. If you hire him, you will be very happy with his service as a freelancer. I've hired a lot of people on Upwork over the years, and no one comes close to the complete package that Khaled is. 10/10." ⭐⭐⭐⭐⭐

"He is essential to our business, we absolutely need him. When anything goes wrong on our website, he is there for us: responsive, intelligent, and able to fix all our problems. If you hire Khaled, regardless of your task, you will not be disappointed." ⭐⭐⭐⭐⭐

"Khaled is amazing! Communicates better than anyone I've ever hired on Upwork. Is skilled and smart enough to produce exactly what I wanted, how I wanted it. I recommend him to anyone who wants a top quality developer with top tier communication skills." ⭐⭐⭐⭐⭐

Dec 2019 - Oct 2020

Learning management system for schools

• 🔧 REST API design and maintenance using Express.js
• 📚 Conducted technical sessions on TypeScript and SSH

🏆 Contributions to Major Projects

Project	Contribution	Link
🍃 Mongoose	MongoDB ODM Enhancement
⚡ Fig Autocomplete	Terminal Completion Specs

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📦 NPM Packages

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🔧 My Open Source Projects

Repository	Description	Link
🔍 Algolia Filter Query Builder	A utility library for building Algolia search filter queries

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🔗 Quick Links

• 📝 Concurrency problem with MongoDB - Nov 2025
• 📝 Exposing a local API to the internet - Apr 2025
• 📝 Data consistency in the NoSQL world - Feb 2025
• 📝 Rust vs Node.js - Apr 2024 - 57 👏
• 📝 API Requests Mastery - Apr 2024
• 📝 MongoDB Job Queue Crisis - Jun 2024

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